package org.h2.expression.function;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import org.h2.api.ErrorCode;
import org.h2.command.Command;
import org.h2.command.Parser;
import org.h2.engine.Constants;
import org.h2.engine.Database;
import org.h2.engine.Mode;
import org.h2.engine.Mode.ModeEnum;
import org.h2.engine.Session;
import org.h2.expression.Expression;
import org.h2.expression.ExpressionColumn;
import org.h2.expression.ExpressionVisitor;
import org.h2.expression.SequenceValue;
import org.h2.expression.ValueExpression;
import org.h2.expression.Variable;
import org.h2.index.Index;
import org.h2.message.DbException;
import org.h2.mode.FunctionsMSSQLServer;
import org.h2.mode.FunctionsMySQL;
import org.h2.mvstore.db.MVSpatialIndex;
import org.h2.schema.Schema;
import org.h2.schema.Sequence;
import org.h2.security.BlockCipher;
import org.h2.security.CipherFactory;
import org.h2.store.fs.FileUtils;
import org.h2.table.Column;
import org.h2.table.ColumnResolver;
import org.h2.table.LinkSchema;
import org.h2.table.Table;
import org.h2.table.TableFilter;
import org.h2.tools.CompressTool;
import org.h2.tools.Csv;
import org.h2.util.Bits;
import org.h2.util.DateTimeUtils;
import org.h2.util.IOUtils;
import org.h2.util.JdbcUtils;
import org.h2.util.MathUtils;
import org.h2.util.StringUtils;
import org.h2.util.Utils;
import org.h2.value.DataType;
import org.h2.value.TypeInfo;
import org.h2.value.Value;
import org.h2.value.ValueArray;
import org.h2.value.ValueBoolean;
import org.h2.value.ValueBytes;
import org.h2.value.ValueCollectionBase;
import org.h2.value.ValueDate;
import org.h2.value.ValueDouble;
import org.h2.value.ValueInt;
import org.h2.value.ValueLong;
import org.h2.value.ValueNull;
import org.h2.value.ValueResultSet;
import org.h2.value.ValueString;
import org.h2.value.ValueTime;
import org.h2.value.ValueTimestamp;
import org.h2.value.ValueTimestampTimeZone;
import org.h2.value.ValueUuid;
public class Function extends Expression implements FunctionCall {
public static final int ABS = 0, ACOS = 1, ASIN = 2, ATAN = 3, ATAN2 = 4,
BITAND = 5, BITOR = 6, BITXOR = 7, CEILING = 8, COS = 9, COT = 10,
DEGREES = 11, EXP = 12, FLOOR = 13, LOG = 14, LOG10 = 15, MOD = 16,
PI = 17, POWER = 18, RADIANS = 19, RAND = 20, ROUND = 21,
ROUNDMAGIC = 22, SIGN = 23, SIN = 24, SQRT = 25, TAN = 26,
TRUNCATE = 27, SECURE_RAND = 28, HASH = 29, ENCRYPT = 30,
DECRYPT = 31, COMPRESS = 32, EXPAND = 33, ZERO = 34,
RANDOM_UUID = 35, COSH = 36, SINH = 37, TANH = 38, LN = 39,
BITGET = 40, ORA_HASH = 41;
public static final int ASCII = 50, BIT_LENGTH = 51, CHAR = 52,
CHAR_LENGTH = 53, CONCAT = 54, DIFFERENCE = 55, HEXTORAW = 56,
INSERT = 57, INSTR = 58, LCASE = 59, LEFT = 60, LENGTH = 61,
LOCATE = 62, LTRIM = 63, OCTET_LENGTH = 64, RAWTOHEX = 65,
REPEAT = 66, REPLACE = 67, RIGHT = 68, RTRIM = 69, SOUNDEX = 70,
SPACE = 71, SUBSTR = 72, SUBSTRING = 73, UCASE = 74, LOWER = 75,
UPPER = 76, POSITION = 77, TRIM = 78, STRINGENCODE = 79,
STRINGDECODE = 80, STRINGTOUTF8 = 81, UTF8TOSTRING = 82,
XMLATTR = 83, XMLNODE = 84, = 85, XMLCDATA = 86,
XMLSTARTDOC = 87, XMLTEXT = 88, REGEXP_REPLACE = 89, RPAD = 90,
LPAD = 91, CONCAT_WS = 92, TO_CHAR = 93, TRANSLATE = 94,
TO_DATE = 96, TO_TIMESTAMP = 97, ADD_MONTHS = 98, TO_TIMESTAMP_TZ = 99;
public static final int CURRENT_DATE = 100, CURRENT_TIME = 101, LOCALTIME = 102,
CURRENT_TIMESTAMP = 103, LOCALTIMESTAMP = 104,
DATE_ADD = 105, DATE_DIFF = 106, DAY_NAME = 107, DAY_OF_MONTH = 108,
DAY_OF_WEEK = 109, DAY_OF_YEAR = 110, HOUR = 111, MINUTE = 112,
MONTH = 113, MONTH_NAME = 114, QUARTER = 115,
SECOND = 116, WEEK = 117, YEAR = 118, = 119,
FORMATDATETIME = 120, PARSEDATETIME = 121, ISO_YEAR = 122,
ISO_WEEK = 123, ISO_DAY_OF_WEEK = 124, DATE_TRUNC = 125;
public static final int MILLISECOND = 126, EPOCH = 127, MICROSECOND = 128, NANOSECOND = 129,
TIMEZONE_HOUR = 130, TIMEZONE_MINUTE = 131, DECADE = 132, CENTURY = 133,
MILLENNIUM = 134, DOW = 135;
public static final int DATABASE = 150, USER = 151, CURRENT_USER = 152,
IDENTITY = 153, SCOPE_IDENTITY = 154, AUTOCOMMIT = 155,
READONLY = 156, DATABASE_PATH = 157, LOCK_TIMEOUT = 158,
DISK_SPACE_USED = 159, SIGNAL = 160, ESTIMATED_ENVELOPE = 161;
private static final Pattern SIGNAL_PATTERN = Pattern.compile("[0-9A-Z]{5}");
public static final int IFNULL = 200, CASEWHEN = 201, CONVERT = 202,
CAST = 203, COALESCE = 204, NULLIF = 205, CASE = 206,
NEXTVAL = 207, CURRVAL = 208, ARRAY_GET = 209, CSVREAD = 210,
CSVWRITE = 211, MEMORY_FREE = 212, MEMORY_USED = 213,
LOCK_MODE = 214, SCHEMA = 215, SESSION_ID = 216,
ARRAY_LENGTH = 217, LINK_SCHEMA = 218, GREATEST = 219, LEAST = 220,
CANCEL_SESSION = 221, SET = 222, TABLE = 223, TABLE_DISTINCT = 224,
FILE_READ = 225, TRANSACTION_ID = 226, TRUNCATE_VALUE = 227,
NVL2 = 228, DECODE = 229, ARRAY_CONTAINS = 230, FILE_WRITE = 232,
UNNEST = 233, ARRAY_CONCAT = 234, ARRAY_APPEND = 235, ARRAY_SLICE = 236;
public static final int REGEXP_LIKE = 240;
public static final int VALUES = 250;
public static final int H2VERSION = 231;
public static final int TRIM_LEADING = 1;
public static final int TRIM_TRAILING = 2;
protected static final int VAR_ARGS = -1;
private static final HashMap<String, FunctionInfo> FUNCTIONS = new HashMap<>(256);
private static final char[] SOUNDEX_INDEX = new char[128];
protected Expression[] args;
protected final FunctionInfo info;
private ArrayList<Expression> varArgs;
private int flags;
protected TypeInfo type;
private final Database database;
static {
String index = "7AEIOUY8HW1BFPV2CGJKQSXZ3DT4L5MN6R";
char number = 0;
for (int i = 0, length = index.length(); i < length; i++) {
char c = index.charAt(i);
if (c < '9') {
number = c;
} else {
SOUNDEX_INDEX[c] = number;
SOUNDEX_INDEX[Character.toLowerCase(c)] = number;
}
}
addFunction("ABS", ABS, 1, Value.NULL);
addFunction("ACOS", ACOS, 1, Value.DOUBLE);
addFunction("ASIN", ASIN, 1, Value.DOUBLE);
addFunction("ATAN", ATAN, 1, Value.DOUBLE);
addFunction("ATAN2", ATAN2, 2, Value.DOUBLE);
addFunction("BITAND", BITAND, 2, Value.LONG);
addFunction("BITGET", BITGET, 2, Value.BOOLEAN);
addFunction("BITOR", BITOR, 2, Value.LONG);
addFunction("BITXOR", BITXOR, 2, Value.LONG);
addFunction("CEILING", CEILING, 1, Value.DOUBLE);
addFunction("CEIL", CEILING, 1, Value.DOUBLE);
addFunction("COS", COS, 1, Value.DOUBLE);
addFunction("COSH", COSH, 1, Value.DOUBLE);
addFunction("COT", COT, 1, Value.DOUBLE);
addFunction("DEGREES", DEGREES, 1, Value.DOUBLE);
addFunction("EXP", EXP, 1, Value.DOUBLE);
addFunction("FLOOR", FLOOR, 1, Value.DOUBLE);
addFunction("LOG", LOG, 1, Value.DOUBLE);
addFunction("LN", LN, 1, Value.DOUBLE);
addFunction("LOG10", LOG10, 1, Value.DOUBLE);
addFunction("MOD", MOD, 2, Value.LONG);
addFunction("PI", PI, 0, Value.DOUBLE);
addFunction("POWER", POWER, 2, Value.DOUBLE);
addFunction("RADIANS", RADIANS, 1, Value.DOUBLE);
addFunctionNotDeterministic("RAND", RAND, VAR_ARGS, Value.DOUBLE);
addFunctionNotDeterministic("RANDOM", RAND, VAR_ARGS, Value.DOUBLE);
addFunction("ROUND", ROUND, VAR_ARGS, Value.DOUBLE);
addFunction("ROUNDMAGIC", ROUNDMAGIC, 1, Value.DOUBLE);
addFunction("SIGN", SIGN, 1, Value.INT);
addFunction("SIN", SIN, 1, Value.DOUBLE);
addFunction("SINH", SINH, 1, Value.DOUBLE);
addFunction("SQRT", SQRT, 1, Value.DOUBLE);
addFunction("TAN", TAN, 1, Value.DOUBLE);
addFunction("TANH", TANH, 1, Value.DOUBLE);
addFunction("TRUNCATE", TRUNCATE, VAR_ARGS, Value.NULL);
addFunction("TRUNC", TRUNCATE, VAR_ARGS, Value.NULL);
addFunction("HASH", HASH, VAR_ARGS, Value.BYTES);
addFunction("ENCRYPT", ENCRYPT, 3, Value.BYTES);
addFunction("DECRYPT", DECRYPT, 3, Value.BYTES);
addFunctionNotDeterministic("SECURE_RAND", SECURE_RAND, 1, Value.BYTES);
addFunction("COMPRESS", COMPRESS, VAR_ARGS, Value.BYTES);
addFunction("EXPAND", EXPAND, 1, Value.BYTES);
addFunction("ZERO", ZERO, 0, Value.INT);
addFunctionNotDeterministic("RANDOM_UUID", RANDOM_UUID, 0, Value.UUID);
addFunctionNotDeterministic("SYS_GUID", RANDOM_UUID, 0, Value.UUID);
addFunctionNotDeterministic("UUID", RANDOM_UUID, 0, Value.UUID);
addFunction("ORA_HASH", ORA_HASH, VAR_ARGS, Value.LONG);
addFunction("ASCII", ASCII, 1, Value.INT);
addFunction("BIT_LENGTH", BIT_LENGTH, 1, Value.LONG);
addFunction("CHAR", CHAR, 1, Value.STRING);
addFunction("CHR", CHAR, 1, Value.STRING);
addFunction("CHAR_LENGTH", CHAR_LENGTH, 1, Value.INT);
addFunction("CHARACTER_LENGTH", CHAR_LENGTH, 1, Value.INT);
addFunctionWithNull("CONCAT", CONCAT, VAR_ARGS, Value.STRING);
addFunctionWithNull("CONCAT_WS", CONCAT_WS, VAR_ARGS, Value.STRING);
addFunction("DIFFERENCE", DIFFERENCE, 2, Value.INT);
addFunction("HEXTORAW", HEXTORAW, 1, Value.STRING);
addFunctionWithNull("INSERT", INSERT, 4, Value.STRING);
addFunction("LCASE", LCASE, 1, Value.STRING);
addFunction("LEFT", LEFT, 2, Value.STRING);
addFunction("LENGTH", LENGTH, 1, Value.LONG);
addFunction("LOCATE", LOCATE, VAR_ARGS, Value.INT);
addFunction("POSITION", LOCATE, 2, Value.INT);
addFunction("INSTR", INSTR, VAR_ARGS, Value.INT);
addFunction("LTRIM", LTRIM, VAR_ARGS, Value.STRING);
addFunction("OCTET_LENGTH", OCTET_LENGTH, 1, Value.LONG);
addFunction("RAWTOHEX", RAWTOHEX, 1, Value.STRING);
addFunction("REPEAT", REPEAT, 2, Value.STRING);
addFunctionWithNull("REPLACE", REPLACE, VAR_ARGS, Value.STRING);
addFunction("RIGHT", RIGHT, 2, Value.STRING);
addFunction("RTRIM", RTRIM, VAR_ARGS, Value.STRING);
addFunction("SOUNDEX", SOUNDEX, 1, Value.STRING);
addFunction("SPACE", SPACE, 1, Value.STRING);
addFunction("SUBSTR", SUBSTR, VAR_ARGS, Value.STRING);
addFunction("SUBSTRING", SUBSTRING, VAR_ARGS, Value.STRING);
addFunction("UCASE", UCASE, 1, Value.STRING);
addFunction("LOWER", LOWER, 1, Value.STRING);
addFunction("UPPER", UPPER, 1, Value.STRING);
addFunction("POSITION", POSITION, 2, Value.INT);
addFunction("TRIM", TRIM, VAR_ARGS, Value.STRING);
addFunction("STRINGENCODE", STRINGENCODE, 1, Value.STRING);
addFunction("STRINGDECODE", STRINGDECODE, 1, Value.STRING);
addFunction("STRINGTOUTF8", STRINGTOUTF8, 1, Value.BYTES);
addFunction("UTF8TOSTRING", UTF8TOSTRING, 1, Value.STRING);
addFunction("XMLATTR", XMLATTR, 2, Value.STRING);
addFunctionWithNull("XMLNODE", XMLNODE, VAR_ARGS, Value.STRING);
addFunction("XMLCOMMENT", XMLCOMMENT, 1, Value.STRING);
addFunction("XMLCDATA", XMLCDATA, 1, Value.STRING);
addFunction("XMLSTARTDOC", XMLSTARTDOC, 0, Value.STRING);
addFunction("XMLTEXT", XMLTEXT, VAR_ARGS, Value.STRING);
addFunction("REGEXP_REPLACE", REGEXP_REPLACE, VAR_ARGS, Value.STRING);
addFunction("RPAD", RPAD, VAR_ARGS, Value.STRING);
addFunction("LPAD", LPAD, VAR_ARGS, Value.STRING);
addFunction("TO_CHAR", TO_CHAR, VAR_ARGS, Value.STRING);
addFunction("TRANSLATE", TRANSLATE, 3, Value.STRING);
addFunction("REGEXP_LIKE", REGEXP_LIKE, VAR_ARGS, Value.BOOLEAN);
addFunctionNotDeterministic("CURRENT_DATE", CURRENT_DATE, 0, Value.DATE, false);
addFunctionNotDeterministic("CURDATE", CURRENT_DATE, 0, Value.DATE);
addFunctionNotDeterministic("SYSDATE", CURRENT_DATE, 0, Value.DATE, false);
addFunctionNotDeterministic("TODAY", CURRENT_DATE, 0, Value.DATE, false);
addFunctionNotDeterministic("CURRENT_TIME", CURRENT_TIME, VAR_ARGS, Value.TIME);
addFunctionNotDeterministic("LOCALTIME", LOCALTIME, VAR_ARGS, Value.TIME, false);
addFunctionNotDeterministic("SYSTIME", LOCALTIME, 0, Value.TIME, false);
addFunctionNotDeterministic("CURTIME", LOCALTIME, VAR_ARGS, Value.TIME);
addFunctionNotDeterministic("CURRENT_TIMESTAMP", CURRENT_TIMESTAMP, VAR_ARGS, Value.TIMESTAMP_TZ, false);
addFunctionNotDeterministic("SYSTIMESTAMP", CURRENT_TIMESTAMP, VAR_ARGS, Value.TIMESTAMP_TZ, false);
addFunctionNotDeterministic("LOCALTIMESTAMP", LOCALTIMESTAMP, VAR_ARGS, Value.TIMESTAMP, false);
addFunctionNotDeterministic("NOW", LOCALTIMESTAMP, VAR_ARGS, Value.TIMESTAMP);
addFunction("TO_DATE", TO_DATE, VAR_ARGS, Value.TIMESTAMP);
addFunction("TO_TIMESTAMP", TO_TIMESTAMP, VAR_ARGS, Value.TIMESTAMP);
addFunction("ADD_MONTHS", ADD_MONTHS, 2, Value.TIMESTAMP);
addFunction("TO_TIMESTAMP_TZ", TO_TIMESTAMP_TZ, VAR_ARGS, Value.TIMESTAMP_TZ);
addFunction("DATEADD", DATE_ADD,
3, Value.TIMESTAMP);
addFunction("TIMESTAMPADD", DATE_ADD,
3, Value.TIMESTAMP);
addFunction("DATEDIFF", DATE_DIFF,
3, Value.LONG);
addFunction("TIMESTAMPDIFF", DATE_DIFF,
3, Value.LONG);
addFunction("DAYNAME", DAY_NAME,
1, Value.STRING);
addFunction("DAYNAME", DAY_NAME,
1, Value.STRING);
addFunction("DAY", DAY_OF_MONTH,
1, Value.INT);
addFunction("DAY_OF_MONTH", DAY_OF_MONTH,
1, Value.INT);
addFunction("DAY_OF_WEEK", DAY_OF_WEEK,
1, Value.INT);
addFunction("DAY_OF_YEAR", DAY_OF_YEAR,
1, Value.INT);
addFunction("DAYOFMONTH", DAY_OF_MONTH,
1, Value.INT);
addFunction("DAYOFWEEK", DAY_OF_WEEK,
1, Value.INT);
addFunction("DAYOFYEAR", DAY_OF_YEAR,
1, Value.INT);
addFunction("HOUR", HOUR,
1, Value.INT);
addFunction("MINUTE", MINUTE,
1, Value.INT);
addFunction("MONTH", MONTH,
1, Value.INT);
addFunction("MONTHNAME", MONTH_NAME,
1, Value.STRING);
addFunction("QUARTER", QUARTER,
1, Value.INT);
addFunction("SECOND", SECOND,
1, Value.INT);
addFunction("WEEK", WEEK,
1, Value.INT);
addFunction("YEAR", YEAR,
1, Value.INT);
addFunction("EXTRACT", EXTRACT,
2, Value.INT);
addFunctionWithNull("FORMATDATETIME", FORMATDATETIME,
VAR_ARGS, Value.STRING);
addFunctionWithNull("PARSEDATETIME", PARSEDATETIME,
VAR_ARGS, Value.TIMESTAMP);
addFunction("ISO_YEAR", ISO_YEAR,
1, Value.INT);
addFunction("ISO_WEEK", ISO_WEEK,
1, Value.INT);
addFunction("ISO_DAY_OF_WEEK", ISO_DAY_OF_WEEK,
1, Value.INT);
addFunction("DATE_TRUNC", DATE_TRUNC, 2, Value.NULL);
addFunctionNotDeterministic("DATABASE", DATABASE,
0, Value.STRING);
addFunctionNotDeterministic("USER", USER,
0, Value.STRING);
addFunctionNotDeterministic("CURRENT_USER", CURRENT_USER,
0, Value.STRING);
addFunctionNotDeterministic("IDENTITY", IDENTITY,
0, Value.LONG);
addFunctionNotDeterministic("SCOPE_IDENTITY", SCOPE_IDENTITY,
0, Value.LONG);
addFunctionNotDeterministic("IDENTITY_VAL_LOCAL", IDENTITY,
0, Value.LONG);
addFunctionNotDeterministic("LAST_INSERT_ID", IDENTITY,
0, Value.LONG);
addFunctionNotDeterministic("LASTVAL", IDENTITY,
0, Value.LONG);
addFunctionNotDeterministic("AUTOCOMMIT", AUTOCOMMIT,
0, Value.BOOLEAN);
addFunctionNotDeterministic("READONLY", READONLY,
0, Value.BOOLEAN);
addFunction("DATABASE_PATH", DATABASE_PATH,
0, Value.STRING);
addFunctionNotDeterministic("LOCK_TIMEOUT", LOCK_TIMEOUT,
0, Value.INT);
addFunctionWithNull("IFNULL", IFNULL,
2, Value.NULL);
addFunctionWithNull("ISNULL", IFNULL,
2, Value.NULL);
addFunctionWithNull("CASEWHEN", CASEWHEN,
3, Value.NULL);
addFunctionWithNull("CONVERT", CONVERT,
1, Value.NULL);
addFunctionWithNull("CAST", CAST,
1, Value.NULL);
addFunctionWithNull("TRUNCATE_VALUE", TRUNCATE_VALUE,
3, Value.NULL);
addFunctionWithNull("COALESCE", COALESCE,
VAR_ARGS, Value.NULL);
addFunctionWithNull("NVL", COALESCE,
VAR_ARGS, Value.NULL);
addFunctionWithNull("NVL2", NVL2,
3, Value.NULL);
addFunctionWithNull("NULLIF", NULLIF,
2, Value.NULL);
addFunctionWithNull("CASE", CASE,
VAR_ARGS, Value.NULL);
addFunctionNotDeterministic("NEXTVAL", NEXTVAL,
VAR_ARGS, Value.LONG);
addFunctionNotDeterministic("CURRVAL", CURRVAL,
VAR_ARGS, Value.LONG);
addFunction("ARRAY_GET", ARRAY_GET,
2, Value.NULL);
addFunctionWithNull("ARRAY_CONTAINS", ARRAY_CONTAINS, 2, Value.BOOLEAN);
addFunction("ARRAY_CAT", ARRAY_CONCAT, 2, Value.ARRAY);
addFunction("ARRAY_APPEND", ARRAY_APPEND, 2, Value.ARRAY);
addFunction("ARRAY_SLICE", ARRAY_SLICE, 3, Value.ARRAY);
addFunction("CSVREAD", CSVREAD,
VAR_ARGS, Value.RESULT_SET, false, false, false, true);
addFunction("CSVWRITE", CSVWRITE,
VAR_ARGS, Value.INT, false, false, true, true);
addFunctionNotDeterministic("MEMORY_FREE", MEMORY_FREE,
0, Value.INT);
addFunctionNotDeterministic("MEMORY_USED", MEMORY_USED,
0, Value.INT);
addFunctionNotDeterministic("LOCK_MODE", LOCK_MODE,
0, Value.INT);
addFunctionNotDeterministic("SCHEMA", SCHEMA,
0, Value.STRING);
addFunctionNotDeterministic("SESSION_ID", SESSION_ID,
0, Value.INT);
addFunction("ARRAY_LENGTH", ARRAY_LENGTH,
1, Value.INT);
addFunctionNotDeterministic("LINK_SCHEMA", LINK_SCHEMA,
6, Value.RESULT_SET);
addFunctionWithNull("LEAST", LEAST,
VAR_ARGS, Value.NULL);
addFunctionWithNull("GREATEST", GREATEST,
VAR_ARGS, Value.NULL);
addFunctionNotDeterministic("CANCEL_SESSION", CANCEL_SESSION,
1, Value.BOOLEAN);
addFunction("SET", SET,
2, Value.NULL, false, false, true, true);
addFunction("FILE_READ", FILE_READ,
VAR_ARGS, Value.NULL, false, false, true, true);
addFunction("FILE_WRITE", FILE_WRITE,
2, Value.LONG, false, false, true, true);
addFunctionNotDeterministic("TRANSACTION_ID", TRANSACTION_ID,
0, Value.STRING);
addFunctionWithNull("DECODE", DECODE,
VAR_ARGS, Value.NULL);
addFunctionNotDeterministic("DISK_SPACE_USED", DISK_SPACE_USED,
1, Value.LONG);
addFunctionWithNull("SIGNAL", SIGNAL, 2, Value.NULL);
addFunctionNotDeterministic("ESTIMATED_ENVELOPE", ESTIMATED_ENVELOPE, 2, Value.LONG);
addFunction("H2VERSION", H2VERSION, 0, Value.STRING);
addFunctionWithNull("TABLE", TABLE, VAR_ARGS, Value.RESULT_SET);
addFunctionWithNull("TABLE_DISTINCT", TABLE_DISTINCT, VAR_ARGS, Value.RESULT_SET);
addFunctionWithNull("UNNEST", UNNEST, VAR_ARGS, Value.RESULT_SET);
addFunction("VALUES", VALUES, 1, Value.NULL, false, true, false, true);
}
public Function(Database database, FunctionInfo info) {
this.database = database;
this.info = info;
if (info.parameterCount == VAR_ARGS) {
varArgs = Utils.newSmallArrayList();
} else {
args = new Expression[info.parameterCount];
}
}
private static void addFunction(String name, int type, int parameterCount,
int returnDataType, boolean nullIfParameterIsNull, boolean deterministic,
boolean bufferResultSetToLocalTemp, boolean requireParentheses) {
FUNCTIONS.put(name, new FunctionInfo(name, type, parameterCount, returnDataType, nullIfParameterIsNull,
deterministic, bufferResultSetToLocalTemp, requireParentheses));
}
private static void addFunctionNotDeterministic(String name, int type,
int parameterCount, int returnDataType) {
addFunctionNotDeterministic(name, type, parameterCount, returnDataType, true);
}
private static void addFunctionNotDeterministic(String name, int type,
int parameterCount, int returnDataType, boolean requireParentheses) {
addFunction(name, type, parameterCount, returnDataType, true, false, true, requireParentheses);
}
private static void addFunction(String name, int type, int parameterCount,
int returnDataType) {
addFunction(name, type, parameterCount, returnDataType, true, true, true, true);
}
private static void addFunctionWithNull(String name, int type,
int parameterCount, int returnDataType) {
addFunction(name, type, parameterCount, returnDataType, false, true, true, true);
}
public static Function getFunction(Database database, String name) {
if (!database.getSettings().databaseToUpper) {
name = StringUtils.toUpperEnglish(name);
}
FunctionInfo info = FUNCTIONS.get(name);
if (info == null) {
switch (database.getMode().getEnum()) {
case MSSQLServer:
return FunctionsMSSQLServer.getFunction(database, name);
case MySQL:
return FunctionsMySQL.getFunction(database, name);
default:
return null;
}
}
switch (info.type) {
case TABLE:
case TABLE_DISTINCT:
case UNNEST:
return new TableFunction(database, info, Long.MAX_VALUE);
default:
return new Function(database, info);
}
}
public static FunctionInfo getFunctionInfo(String upperName) {
return FUNCTIONS.get(upperName);
}
public void setParameter(int index, Expression param) {
if (varArgs != null) {
varArgs.add(param);
} else {
if (index >= args.length) {
throw DbException.get(ErrorCode.INVALID_PARAMETER_COUNT_2,
info.name, Integer.toString(args.length));
}
args[index] = param;
}
}
public void setFlags(int flags) {
this.flags = flags;
}
public int getFlags() {
return flags;
}
@Override
public Value getValue(Session session) {
return getValueWithArgs(session, args);
}
private Value getSimpleValue(Session session, Value v0, Expression[] args,
Value[] values) {
Value result;
switch (info.type) {
case ABS:
result = v0.getSignum() >= 0 ? v0 : v0.negate();
break;
case ACOS:
result = ValueDouble.get(Math.acos(v0.getDouble()));
break;
case ASIN:
result = ValueDouble.get(Math.asin(v0.getDouble()));
break;
case ATAN:
result = ValueDouble.get(Math.atan(v0.getDouble()));
break;
case CEILING:
result = ValueDouble.get(Math.ceil(v0.getDouble()));
break;
case COS:
result = ValueDouble.get(Math.cos(v0.getDouble()));
break;
case COSH:
result = ValueDouble.get(Math.cosh(v0.getDouble()));
break;
case COT: {
double d = Math.tan(v0.getDouble());
if (d == 0.0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL(false));
}
result = ValueDouble.get(1. / d);
break;
}
case DEGREES:
result = ValueDouble.get(Math.toDegrees(v0.getDouble()));
break;
case EXP:
result = ValueDouble.get(Math.exp(v0.getDouble()));
break;
case FLOOR:
result = ValueDouble.get(Math.floor(v0.getDouble()));
break;
case LN:
result = ValueDouble.get(Math.log(v0.getDouble()));
break;
case LOG:
if (database.getMode().logIsLogBase10) {
result = ValueDouble.get(Math.log10(v0.getDouble()));
} else {
result = ValueDouble.get(Math.log(v0.getDouble()));
}
break;
case LOG10:
result = ValueDouble.get(Math.log10(v0.getDouble()));
break;
case PI:
result = ValueDouble.get(Math.PI);
break;
case RADIANS:
result = ValueDouble.get(Math.toRadians(v0.getDouble()));
break;
case RAND: {
if (v0 != null) {
session.getRandom().setSeed(v0.getInt());
}
result = ValueDouble.get(session.getRandom().nextDouble());
break;
}
case ROUNDMAGIC:
result = ValueDouble.get(roundMagic(v0.getDouble()));
break;
case SIGN:
result = ValueInt.get(v0.getSignum());
break;
case SIN:
result = ValueDouble.get(Math.sin(v0.getDouble()));
break;
case SINH:
result = ValueDouble.get(Math.sinh(v0.getDouble()));
break;
case SQRT:
result = ValueDouble.get(Math.sqrt(v0.getDouble()));
break;
case TAN:
result = ValueDouble.get(Math.tan(v0.getDouble()));
break;
case TANH:
result = ValueDouble.get(Math.tanh(v0.getDouble()));
break;
case SECURE_RAND:
result = ValueBytes.getNoCopy(
MathUtils.secureRandomBytes(v0.getInt()));
break;
case EXPAND:
result = ValueBytes.getNoCopy(
CompressTool.getInstance().expand(v0.getBytesNoCopy()));
break;
case ZERO:
result = ValueInt.get(0);
break;
case RANDOM_UUID:
result = ValueUuid.getNewRandom();
break;
case ASCII: {
String s = v0.getString();
if (s.isEmpty()) {
result = ValueNull.INSTANCE;
} else {
result = ValueInt.get(s.charAt(0));
}
break;
}
case BIT_LENGTH:
result = ValueLong.get(16 * length(v0));
break;
case CHAR:
result = ValueString.get(String.valueOf((char) v0.getInt()),
database.getMode().treatEmptyStringsAsNull);
break;
case CHAR_LENGTH:
case LENGTH:
result = ValueLong.get(length(v0));
break;
case OCTET_LENGTH:
result = ValueLong.get(2 * length(v0));
break;
case CONCAT_WS:
case CONCAT: {
result = ValueNull.INSTANCE;
int start = 0;
String separator = "";
if (info.type == CONCAT_WS) {
start = 1;
separator = getNullOrValue(session, args, values, 0).getString();
}
for (int i = start; i < args.length; i++) {
Value v = getNullOrValue(session, args, values, i);
if (v == ValueNull.INSTANCE) {
continue;
}
if (result == ValueNull.INSTANCE) {
result = v;
} else {
String tmp = v.getString();
if (!StringUtils.isNullOrEmpty(separator)
&& !StringUtils.isNullOrEmpty(tmp)) {
tmp = separator + tmp;
}
result = ValueString.get(result.getString() + tmp,
database.getMode().treatEmptyStringsAsNull);
}
}
if (info.type == CONCAT_WS) {
if (separator != null && result == ValueNull.INSTANCE) {
result = ValueString.get("",
database.getMode().treatEmptyStringsAsNull);
}
}
break;
}
case HEXTORAW:
result = ValueString.get(hexToRaw(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case LOWER:
case LCASE:
result = ValueString.get(v0.getString().toLowerCase(),
database.getMode().treatEmptyStringsAsNull);
break;
case RAWTOHEX:
result = ValueString.get(rawToHex(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case SOUNDEX:
result = ValueString.get(getSoundex(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case SPACE: {
int len = Math.max(0, v0.getInt());
char[] chars = new char[len];
for (int i = len - 1; i >= 0; i--) {
chars[i] = ' ';
}
result = ValueString.get(new String(chars),
database.getMode().treatEmptyStringsAsNull);
break;
}
case UPPER:
case UCASE:
result = ValueString.get(v0.getString().toUpperCase(),
database.getMode().treatEmptyStringsAsNull);
break;
case STRINGENCODE:
result = ValueString.get(StringUtils.javaEncode(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case STRINGDECODE:
result = ValueString.get(StringUtils.javaDecode(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case STRINGTOUTF8:
result = ValueBytes.getNoCopy(v0.getString().
getBytes(StandardCharsets.UTF_8));
break;
case UTF8TOSTRING:
result = ValueString.get(new String(v0.getBytesNoCopy(),
StandardCharsets.UTF_8),
database.getMode().treatEmptyStringsAsNull);
break;
case XMLCOMMENT:
result = ValueString.get(StringUtils.xmlComment(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case XMLCDATA:
result = ValueString.get(StringUtils.xmlCData(v0.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case XMLSTARTDOC:
result = ValueString.get(StringUtils.xmlStartDoc(),
database.getMode().treatEmptyStringsAsNull);
break;
case CURRENT_DATE: {
result = (database.getMode().dateTimeValueWithinTransaction ? session.getTransactionStart()
: session.getCurrentCommandStart()).convertTo(Value.DATE);
break;
}
case CURRENT_TIME:
case LOCALTIME: {
ValueTime vt = (ValueTime) (database.getMode().dateTimeValueWithinTransaction
? session.getTransactionStart()
: session.getCurrentCommandStart()).convertTo(Value.TIME);
result = vt.convertScale(false, v0 == null ? 0 : v0.getInt());
break;
}
case CURRENT_TIMESTAMP: {
ValueTimestampTimeZone vt = database.getMode().dateTimeValueWithinTransaction
? session.getTransactionStart()
: session.getCurrentCommandStart();
result = vt.convertScale(false, v0 == null ? 6 : v0.getInt());
break;
}
case LOCALTIMESTAMP: {
Value vt = (database.getMode().dateTimeValueWithinTransaction ? session.getTransactionStart()
: session.getCurrentCommandStart()).convertTo(Value.TIMESTAMP);
result = vt.convertScale(false, v0 == null ? 6 : v0.getInt());
break;
}
case DAY_NAME: {
int dayOfWeek = DateTimeUtils.getSundayDayOfWeek(DateTimeUtils.dateAndTimeFromValue(v0)[0]);
result = ValueString.get(DateTimeFunctions.getMonthsAndWeeks(1)[dayOfWeek],
database.getMode().treatEmptyStringsAsNull);
break;
}
case DAY_OF_MONTH:
case DAY_OF_WEEK:
case DAY_OF_YEAR:
case HOUR:
case MINUTE:
case MONTH:
case QUARTER:
case ISO_YEAR:
case ISO_WEEK:
case ISO_DAY_OF_WEEK:
case SECOND:
case WEEK:
case YEAR:
result = ValueInt.get(DateTimeFunctions.getIntDatePart(v0, info.type, database.getMode()));
break;
case MONTH_NAME: {
int month = DateTimeUtils.monthFromDateValue(DateTimeUtils.dateAndTimeFromValue(v0)[0]);
result = ValueString.get(DateTimeFunctions.getMonthsAndWeeks(0)[month - 1],
database.getMode().treatEmptyStringsAsNull);
break;
}
case DATABASE:
result = ValueString.get(database.getShortName(),
database.getMode().treatEmptyStringsAsNull);
break;
case USER:
case CURRENT_USER:
result = ValueString.get(session.getUser().getName(),
database.getMode().treatEmptyStringsAsNull);
break;
case IDENTITY:
result = session.getLastIdentity();
break;
case SCOPE_IDENTITY:
result = session.getLastScopeIdentity();
break;
case AUTOCOMMIT:
result = ValueBoolean.get(session.getAutoCommit());
break;
case READONLY:
result = ValueBoolean.get(database.isReadOnly());
break;
case DATABASE_PATH: {
String path = database.getDatabasePath();
result = path == null ?
(Value) ValueNull.INSTANCE : ValueString.get(path,
database.getMode().treatEmptyStringsAsNull);
break;
}
case LOCK_TIMEOUT:
result = ValueInt.get(session.getLockTimeout());
break;
case DISK_SPACE_USED:
result = ValueLong.get(getDiskSpaceUsed(session, v0));
break;
case ESTIMATED_ENVELOPE:
result = getEstimatedEnvelope(session, v0, values[1]);
break;
case CAST:
case CONVERT: {
Mode mode = database.getMode();
TypeInfo type = this.type;
v0 = v0.convertTo(type, mode, null);
v0 = v0.convertScale(mode.convertOnlyToSmallerScale, type.getScale());
v0 = v0.convertPrecision(type.getPrecision(), false);
result = v0;
break;
}
case MEMORY_FREE:
session.getUser().checkAdmin();
result = ValueInt.get(Utils.getMemoryFree());
break;
case MEMORY_USED:
session.getUser().checkAdmin();
result = ValueInt.get(Utils.getMemoryUsed());
break;
case LOCK_MODE:
result = ValueInt.get(database.getLockMode());
break;
case SCHEMA:
result = ValueString.get(session.getCurrentSchemaName(),
database.getMode().treatEmptyStringsAsNull);
break;
case SESSION_ID:
result = ValueInt.get(session.getId());
break;
case IFNULL: {
result = v0;
if (v0 == ValueNull.INSTANCE) {
result = getNullOrValue(session, args, values, 1);
}
result = result.convertTo(type, database.getMode(), null);
break;
}
case CASEWHEN: {
Value v;
if (!v0.getBoolean()) {
v = getNullOrValue(session, args, values, 2);
} else {
v = getNullOrValue(session, args, values, 1);
}
result = v.convertTo(type, database.getMode(), null);
break;
}
case DECODE: {
int index = -1;
for (int i = 1, len = args.length - 1; i < len; i += 2) {
if (database.areEqual(v0,
getNullOrValue(session, args, values, i))) {
index = i + 1;
break;
}
}
if (index < 0 && args.length % 2 == 0) {
index = args.length - 1;
}
Value v = index < 0 ? ValueNull.INSTANCE :
getNullOrValue(session, args, values, index);
result = v.convertTo(type, database.getMode(), null);
break;
}
case NVL2: {
Value v;
if (v0 == ValueNull.INSTANCE) {
v = getNullOrValue(session, args, values, 2);
} else {
v = getNullOrValue(session, args, values, 1);
}
result = v.convertTo(type, database.getMode(), null);
break;
}
case COALESCE: {
result = v0;
for (int i = 0; i < args.length; i++) {
Value v = getNullOrValue(session, args, values, i);
if (v != ValueNull.INSTANCE) {
result = v.convertTo(type, database.getMode(), null);
break;
}
}
break;
}
case GREATEST:
case LEAST: {
result = ValueNull.INSTANCE;
for (int i = 0; i < args.length; i++) {
Value v = getNullOrValue(session, args, values, i);
if (v != ValueNull.INSTANCE) {
v = v.convertTo(type, database.getMode(), null);
if (result == ValueNull.INSTANCE) {
result = v;
} else {
int comp = database.compareTypeSafe(result, v);
if (info.type == GREATEST && comp < 0) {
result = v;
} else if (info.type == LEAST && comp > 0) {
result = v;
}
}
}
}
break;
}
case CASE: {
Expression then = null;
if (v0 == null) {
for (int i = 1, len = args.length - 1; i < len; i += 2) {
Value when = args[i].getValue(session);
if (when.getBoolean()) {
then = args[i + 1];
break;
}
}
} else {
if (v0 != ValueNull.INSTANCE) {
for (int i = 1, len = args.length - 1; i < len; i += 2) {
Value when = args[i].getValue(session);
if (database.areEqual(v0, when)) {
then = args[i + 1];
break;
}
}
}
}
if (then == null && args.length % 2 == 0) {
then = args[args.length - 1];
}
Value v = then == null ? ValueNull.INSTANCE : then.getValue(session);
result = v.convertTo(type, database.getMode(), null);
break;
}
case ARRAY_GET: {
Value[] list = getArray(v0);
if (list != null) {
Value v1 = getNullOrValue(session, args, values, 1);
int element = v1.getInt();
if (element < 1 || element > list.length) {
result = ValueNull.INSTANCE;
} else {
result = list[element - 1];
}
} else {
result = ValueNull.INSTANCE;
}
break;
}
case ARRAY_LENGTH: {
Value[] list = getArray(v0);
if (list != null) {
result = ValueInt.get(list.length);
} else {
result = ValueNull.INSTANCE;
}
break;
}
case ARRAY_CONTAINS: {
result = ValueBoolean.FALSE;
Value[] list = getArray(v0);
if (list != null) {
Value v1 = getNullOrValue(session, args, values, 1);
for (Value v : list) {
if (database.areEqual(v, v1)) {
result = ValueBoolean.TRUE;
break;
}
}
} else {
result = ValueNull.INSTANCE;
}
break;
}
case CANCEL_SESSION: {
result = ValueBoolean.get(cancelStatement(session, v0.getInt()));
break;
}
case TRANSACTION_ID: {
result = session.getTransactionId();
break;
}
default:
result = null;
}
return result;
}
private static Value[] getArray(Value v0) {
int t = v0.getValueType();
Value[] list;
if (t == Value.ARRAY || t == Value.ROW) {
list = ((ValueCollectionBase) v0).getList();
} else {
list = null;
}
return list;
}
private static boolean cancelStatement(Session session, int targetSessionId) {
session.getUser().checkAdmin();
Session[] sessions = session.getDatabase().getSessions(false);
for (Session s : sessions) {
if (s.getId() == targetSessionId) {
Command c = s.getCurrentCommand();
if (c == null) {
return false;
}
c.cancel();
return true;
}
}
return false;
}
private static long getDiskSpaceUsed(Session session, Value tableName) {
return getTable(session, tableName).getDiskSpaceUsed();
}
private static Value getEstimatedEnvelope(Session session, Value tableName, Value columnName) {
Table table = getTable(session, tableName);
Column column = table.getColumn(columnName.getString());
ArrayList<Index> indexes = table.getIndexes();
if (indexes != null) {
for (int i = 1, size = indexes.size(); i < size; i++) {
Index index = indexes.get(i);
if (index instanceof MVSpatialIndex && index.isFirstColumn(column)) {
return ((MVSpatialIndex) index).getEstimatedBounds(session);
}
}
}
return ValueNull.INSTANCE;
}
private static Table getTable(Session session, Value tableName) {
return new Parser(session).parseTableName(tableName.getString());
}
protected static Value getNullOrValue(Session session, Expression[] args,
Value[] values, int i) {
if (i >= args.length) {
return null;
}
Value v = values[i];
if (v == null) {
Expression e = args[i];
if (e == null) {
return null;
}
v = values[i] = e.getValue(session);
}
return v;
}
protected Value getValueWithArgs(Session session, Expression[] args) {
Value[] values = new Value[args.length];
if (info.nullIfParameterIsNull) {
for (int i = 0; i < args.length; i++) {
Expression e = args[i];
Value v = e.getValue(session);
if (v == ValueNull.INSTANCE) {
return ValueNull.INSTANCE;
}
values[i] = v;
}
}
Value v0 = getNullOrValue(session, args, values, 0);
Value resultSimple = getSimpleValue(session, v0, args, values);
if (resultSimple != null) {
return resultSimple;
}
Value v1 = getNullOrValue(session, args, values, 1);
Value v2 = getNullOrValue(session, args, values, 2);
Value v3 = getNullOrValue(session, args, values, 3);
Value v4 = getNullOrValue(session, args, values, 4);
Value v5 = getNullOrValue(session, args, values, 5);
Value result;
switch (info.type) {
case ATAN2:
result = ValueDouble.get(
Math.atan2(v0.getDouble(), v1.getDouble()));
break;
case BITAND:
result = ValueLong.get(v0.getLong() & v1.getLong());
break;
case BITGET:
result = ValueBoolean.get((v0.getLong() & (1L << v1.getInt())) != 0);
break;
case BITOR:
result = ValueLong.get(v0.getLong() | v1.getLong());
break;
case BITXOR:
result = ValueLong.get(v0.getLong() ^ v1.getLong());
break;
case MOD: {
long x = v1.getLong();
if (x == 0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL(false));
}
result = ValueLong.get(v0.getLong() % x);
break;
}
case POWER:
result = ValueDouble.get(Math.pow(
v0.getDouble(), v1.getDouble()));
break;
case ROUND: {
double f = v1 == null ? 1. : Math.pow(10., v1.getDouble());
double middleResult = v0.getDouble() * f;
int oneWithSymbol = middleResult > 0 ? 1 : -1;
result = ValueDouble.get(Math.round(Math.abs(middleResult)) / f * oneWithSymbol);
break;
}
case TRUNCATE: {
if (v0.getValueType() == Value.TIMESTAMP) {
result = ValueTimestamp.fromDateValueAndNanos(((ValueTimestamp) v0).getDateValue(), 0);
} else if (v0.getValueType() == Value.DATE) {
result = ValueTimestamp.fromDateValueAndNanos(((ValueDate) v0).getDateValue(), 0);
} else if (v0.getValueType() == Value.TIMESTAMP_TZ) {
ValueTimestampTimeZone ts = (ValueTimestampTimeZone) v0;
result = ValueTimestampTimeZone.fromDateValueAndNanos(ts.getDateValue(), 0,
ts.getTimeZoneOffsetMins());
} else if (v0.getValueType() == Value.STRING) {
ValueTimestamp ts = ValueTimestamp.parse(v0.getString(), session.getDatabase().getMode());
result = ValueTimestamp.fromDateValueAndNanos(ts.getDateValue(), 0);
} else {
double d = v0.getDouble();
int p = v1 == null ? 0 : v1.getInt();
double f = Math.pow(10., p);
double g = d * f;
result = ValueDouble.get(((d < 0) ? Math.ceil(g) : Math.floor(g)) / f);
}
break;
}
case HASH:
result = getHash(v0.getString(), v1, v2 == null ? 1 : v2.getInt());
break;
case ENCRYPT:
result = ValueBytes.getNoCopy(encrypt(v0.getString(),
v1.getBytesNoCopy(), v2.getBytesNoCopy()));
break;
case DECRYPT:
result = ValueBytes.getNoCopy(decrypt(v0.getString(),
v1.getBytesNoCopy(), v2.getBytesNoCopy()));
break;
case COMPRESS: {
String algorithm = null;
if (v1 != null) {
algorithm = v1.getString();
}
result = ValueBytes.getNoCopy(CompressTool.getInstance().
compress(v0.getBytesNoCopy(), algorithm));
break;
}
case ORA_HASH:
result = oraHash(v0,
v1 == null ? 0xffff_ffffL : v1.getLong(),
v2 == null ? 0L : v2.getLong());
break;
case DIFFERENCE:
result = ValueInt.get(getDifference(
v0.getString(), v1.getString()));
break;
case INSERT: {
if (v1 == ValueNull.INSTANCE || v2 == ValueNull.INSTANCE) {
result = v1;
} else {
result = ValueString.get(insert(v0.getString(),
v1.getInt(), v2.getInt(), v3.getString()),
database.getMode().treatEmptyStringsAsNull);
}
break;
}
case LEFT:
result = ValueString.get(left(v0.getString(), v1.getInt()),
database.getMode().treatEmptyStringsAsNull);
break;
case LOCATE: {
int start = v2 == null ? 0 : v2.getInt();
result = ValueInt.get(locate(v0.getString(), v1.getString(), start));
break;
}
case INSTR: {
int start = v2 == null ? 0 : v2.getInt();
result = ValueInt.get(locate(v1.getString(), v0.getString(), start));
break;
}
case REPEAT: {
int count = Math.max(0, v1.getInt());
result = ValueString.get(repeat(v0.getString(), count),
database.getMode().treatEmptyStringsAsNull);
break;
}
case REPLACE: {
if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE
|| v2 == ValueNull.INSTANCE && database.getMode().getEnum() != Mode.ModeEnum.Oracle) {
result = ValueNull.INSTANCE;
} else {
String s0 = v0.getString();
String s1 = v1.getString();
String s2 = (v2 == null) ? "" : v2.getString();
if (s2 == null) {
s2 = "";
}
result = ValueString.get(StringUtils.replaceAll(s0, s1, s2),
database.getMode().treatEmptyStringsAsNull);
}
break;
}
case RIGHT:
result = ValueString.get(right(v0.getString(), v1.getInt()),
database.getMode().treatEmptyStringsAsNull);
break;
case LTRIM:
result = ValueString.get(StringUtils.trim(v0.getString(),
true, false, v1 == null ? " " : v1.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case TRIM:
result = ValueString.get(StringUtils.trim(v0.getString(),
(flags & TRIM_LEADING) != 0, (flags & TRIM_TRAILING) != 0, v1 == null ? " " : v1.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case RTRIM:
result = ValueString.get(StringUtils.trim(v0.getString(),
false, true, v1 == null ? " " : v1.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case SUBSTR:
case SUBSTRING: {
String s = v0.getString();
int offset = v1.getInt();
if (offset < 0) {
offset = s.length() + offset + 1;
}
int length = v2 == null ? s.length() : v2.getInt();
result = ValueString.get(substring(s, offset, length),
database.getMode().treatEmptyStringsAsNull);
break;
}
case POSITION:
result = ValueInt.get(locate(v0.getString(), v1.getString(), 0));
break;
case XMLATTR:
result = ValueString.get(
StringUtils.xmlAttr(v0.getString(), v1.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case XMLNODE: {
String attr = v1 == null ?
null : v1 == ValueNull.INSTANCE ? null : v1.getString();
String content = v2 == null ?
null : v2 == ValueNull.INSTANCE ? null : v2.getString();
boolean indent = v3 == null ?
true : v3.getBoolean();
result = ValueString.get(StringUtils.xmlNode(
v0.getString(), attr, content, indent),
database.getMode().treatEmptyStringsAsNull);
break;
}
case REGEXP_REPLACE: {
String input = v0.getString();
String regexp = v1.getString();
String replacement = v2.getString();
String regexpMode = v3 != null ? v3.getString() : null;
result = regexpReplace(input, regexp, replacement, regexpMode);
break;
}
case RPAD:
result = ValueString.get(StringUtils.pad(v0.getString(),
v1.getInt(), v2 == null ? null : v2.getString(), true),
database.getMode().treatEmptyStringsAsNull);
break;
case LPAD:
result = ValueString.get(StringUtils.pad(v0.getString(),
v1.getInt(), v2 == null ? null : v2.getString(), false),
database.getMode().treatEmptyStringsAsNull);
break;
case TO_CHAR:
switch (v0.getValueType()){
case Value.TIME:
case Value.DATE:
case Value.TIMESTAMP:
case Value.TIMESTAMP_TZ:
result = ValueString.get(ToChar.toCharDateTime(v0,
v1 == null ? null : v1.getString(),
v2 == null ? null : v2.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
case Value.SHORT:
case Value.INT:
case Value.LONG:
case Value.DECIMAL:
case Value.DOUBLE:
case Value.FLOAT:
result = ValueString.get(ToChar.toChar(v0.getBigDecimal(),
v1 == null ? null : v1.getString(),
v2 == null ? null : v2.getString()),
database.getMode().treatEmptyStringsAsNull);
break;
default:
result = ValueString.get(v0.getString(),
database.getMode().treatEmptyStringsAsNull);
}
break;
case TO_DATE:
result = ToDateParser.toDate(session, v0.getString(), v1 == null ? null : v1.getString());
break;
case TO_TIMESTAMP:
result = ToDateParser.toTimestamp(session, v0.getString(), v1 == null ? null : v1.getString());
break;
case ADD_MONTHS:
result = DateTimeFunctions.dateadd("MONTH", v1.getInt(), v0);
break;
case TO_TIMESTAMP_TZ:
result = ToDateParser.toTimestampTz(session, v0.getString(), v1 == null ? null : v1.getString());
break;
case TRANSLATE: {
String matching = v1.getString();
String replacement = v2.getString();
result = ValueString.get(
translate(v0.getString(), matching, replacement),
database.getMode().treatEmptyStringsAsNull);
break;
}
case H2VERSION:
result = ValueString.get(Constants.getVersion(),
database.getMode().treatEmptyStringsAsNull);
break;
case DATE_ADD:
result = DateTimeFunctions.dateadd(v0.getString(), v1.getLong(), v2);
break;
case DATE_DIFF:
result = ValueLong.get(DateTimeFunctions.datediff(v0.getString(), v1, v2));
break;
case DATE_TRUNC:
result = DateTimeFunctions.truncateDate(v0.getString(), v1);
break;
case EXTRACT:
result = DateTimeFunctions.extract(v0.getString(), v1, database.getMode());
break;
case FORMATDATETIME: {
if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE) {
result = ValueNull.INSTANCE;
} else {
String locale = v2 == null ?
null : v2 == ValueNull.INSTANCE ? null : v2.getString();
String tz = v3 == null ?
null : v3 == ValueNull.INSTANCE ? null : v3.getString();
if (v0 instanceof ValueTimestampTimeZone) {
tz = DateTimeUtils.timeZoneNameFromOffsetMins(
((ValueTimestampTimeZone) v0).getTimeZoneOffsetMins());
}
result = ValueString.get(DateTimeFunctions.formatDateTime(
v0.getTimestamp(), v1.getString(), locale, tz),
database.getMode().treatEmptyStringsAsNull);
}
break;
}
case PARSEDATETIME: {
if (v0 == ValueNull.INSTANCE || v1 == ValueNull.INSTANCE) {
result = ValueNull.INSTANCE;
} else {
String locale = v2 == null ?
null : v2 == ValueNull.INSTANCE ? null : v2.getString();
String tz = v3 == null ?
null : v3 == ValueNull.INSTANCE ? null : v3.getString();
java.util.Date d = DateTimeFunctions.parseDateTime(
v0.getString(), v1.getString(), locale, tz);
result = ValueTimestamp.fromMillis(d.getTime());
}
break;
}
case NULLIF:
result = database.areEqual(v0, v1) ? ValueNull.INSTANCE : v0;
break;
case NEXTVAL: {
Sequence sequence = getSequence(session, v0, v1);
SequenceValue value = new SequenceValue(sequence);
result = value.getValue(session);
break;
}
case CURRVAL: {
Sequence sequence = getSequence(session, v0, v1);
result = ValueLong.get(sequence.getCurrentValue());
break;
}
case CSVREAD: {
String fileName = v0.getString();
String columnList = v1 == null ? null : v1.getString();
Csv csv = new Csv();
String options = v2 == null ? null : v2.getString();
String charset = null;
if (options != null && options.indexOf('=') >= 0) {
charset = csv.setOptions(options);
} else {
charset = options;
String fieldSeparatorRead = v3 == null ? null : v3.getString();
String fieldDelimiter = v4 == null ? null : v4.getString();
String escapeCharacter = v5 == null ? null : v5.getString();
Value v6 = getNullOrValue(session, args, values, 6);
String nullString = v6 == null ? null : v6.getString();
setCsvDelimiterEscape(csv, fieldSeparatorRead, fieldDelimiter,
escapeCharacter);
csv.setNullString(nullString);
}
char fieldSeparator = csv.getFieldSeparatorRead();
String[] columns = StringUtils.arraySplit(columnList,
fieldSeparator, true);
try {
result = ValueResultSet.get(session, csv.read(fileName, columns, charset), Integer.MAX_VALUE);
} catch (SQLException e) {
throw DbException.convert(e);
}
break;
}
case ARRAY_CONCAT: {
final ValueArray array = (ValueArray) v0.convertTo(Value.ARRAY);
final ValueArray array2 = (ValueArray) v1.convertTo(Value.ARRAY);
if (!array.getComponentType().equals(array2.getComponentType()))
throw DbException.get(ErrorCode.GENERAL_ERROR_1, "Expected component type " + array.getComponentType()
+ " but got " + array2.getComponentType());
final Value[] res = Arrays.copyOf(array.getList(), array.getList().length + array2.getList().length);
System.arraycopy(array2.getList(), 0, res, array.getList().length, array2.getList().length);
result = ValueArray.get(array.getComponentType(), res);
break;
}
case ARRAY_APPEND: {
final ValueArray array = (ValueArray) v0.convertTo(Value.ARRAY);
if (v1 != ValueNull.INSTANCE && array.getComponentType() != Object.class
&& !array.getComponentType().isInstance(v1.getObject()))
throw DbException.get(ErrorCode.GENERAL_ERROR_1,
"Expected component type " + array.getComponentType() + " but got " + v1.getClass());
final Value[] res = Arrays.copyOf(array.getList(), array.getList().length + 1);
res[array.getList().length] = v1;
result = ValueArray.get(array.getComponentType(), res);
break;
}
case ARRAY_SLICE: {
result = null;
final ValueArray array = (ValueArray) v0.convertTo(Value.ARRAY);
int index1 = v1.getInt() - 1;
int index2 = v2.getInt();
final boolean isPG = database.getMode().getEnum() == ModeEnum.PostgreSQL;
if (index1 > index2) {
if (isPG)
result = ValueArray.get(array.getComponentType(), new Value[0]);
else
result = ValueNull.INSTANCE;
} else {
if (index1 < 0) {
if (isPG)
index1 = 0;
else
result = ValueNull.INSTANCE;
}
if (index2 > array.getList().length) {
if (isPG)
index2 = array.getList().length;
else
result = ValueNull.INSTANCE;
}
}
if (result == null)
result = ValueArray.get(array.getComponentType(), Arrays.copyOfRange(array.getList(), index1, index2));
break;
}
case LINK_SCHEMA: {
session.getUser().checkAdmin();
Connection conn = session.createConnection(false);
ResultSet rs = LinkSchema.linkSchema(conn, v0.getString(),
v1.getString(), v2.getString(), v3.getString(),
v4.getString(), v5.getString());
result = ValueResultSet.get(session, rs, Integer.MAX_VALUE);
break;
}
case CSVWRITE: {
session.getUser().checkAdmin();
Connection conn = session.createConnection(false);
Csv csv = new Csv();
String options = v2 == null ? null : v2.getString();
String charset = null;
if (options != null && options.indexOf('=') >= 0) {
charset = csv.setOptions(options);
} else {
charset = options;
String fieldSeparatorWrite = v3 == null ? null : v3.getString();
String fieldDelimiter = v4 == null ? null : v4.getString();
String escapeCharacter = v5 == null ? null : v5.getString();
Value v6 = getNullOrValue(session, args, values, 6);
String nullString = v6 == null ? null : v6.getString();
Value v7 = getNullOrValue(session, args, values, 7);
String lineSeparator = v7 == null ? null : v7.getString();
setCsvDelimiterEscape(csv, fieldSeparatorWrite, fieldDelimiter,
escapeCharacter);
csv.setNullString(nullString);
if (lineSeparator != null) {
csv.setLineSeparator(lineSeparator);
}
}
try {
int rows = csv.write(conn, v0.getString(), v1.getString(),
charset);
result = ValueInt.get(rows);
} catch (SQLException e) {
throw DbException.convert(e);
}
break;
}
case SET: {
Variable var = (Variable) args[0];
session.setVariable(var.getName(), v1);
result = v1;
break;
}
case FILE_READ: {
session.getUser().checkAdmin();
String fileName = v0.getString();
boolean blob = args.length == 1;
try {
long fileLength = FileUtils.size(fileName);
final InputStream in = FileUtils.newInputStream(fileName);
try {
if (blob) {
result = database.getLobStorage().createBlob(in, fileLength);
} else {
Reader reader;
if (v1 == ValueNull.INSTANCE) {
reader = new InputStreamReader(in);
} else {
reader = new InputStreamReader(in, v1.getString());
}
result = database.getLobStorage().createClob(reader, fileLength);
}
} finally {
IOUtils.closeSilently(in);
}
session.addTemporaryLob(result);
} catch (IOException e) {
throw DbException.convertIOException(e, fileName);
}
break;
}
case FILE_WRITE: {
session.getUser().checkAdmin();
result = ValueNull.INSTANCE;
String fileName = v1.getString();
try {
FileOutputStream fileOutputStream = new FileOutputStream(fileName);
try (InputStream in = v0.getInputStream()) {
result = ValueLong.get(IOUtils.copyAndClose(in,
fileOutputStream));
}
} catch (IOException e) {
throw DbException.convertIOException(e, fileName);
}
break;
}
case TRUNCATE_VALUE: {
result = v0.convertPrecision(v1.getLong(), v2.getBoolean());
break;
}
case XMLTEXT:
if (v1 == null) {
result = ValueString.get(StringUtils.xmlText(
v0.getString()),
database.getMode().treatEmptyStringsAsNull);
} else {
result = ValueString.get(StringUtils.xmlText(
v0.getString(), v1.getBoolean()),
database.getMode().treatEmptyStringsAsNull);
}
break;
case REGEXP_LIKE: {
String regexp = v1.getString();
String regexpMode = v2 != null ? v2.getString() : null;
int flags = makeRegexpFlags(regexpMode, false);
try {
result = ValueBoolean.get(Pattern.compile(regexp, flags)
.matcher(v0.getString()).find());
} catch (PatternSyntaxException e) {
throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, regexp);
}
break;
}
case VALUES: {
Expression a0 = args[0];
StringBuilder builder = new StringBuilder();
Parser.quoteIdentifier(builder, a0.getSchemaName(), true).append('.');
Parser.quoteIdentifier(builder, a0.getTableName(), true).append('.');
Parser.quoteIdentifier(builder, a0.getColumnName(), true);
result = session.getVariable(builder.toString());
break;
}
case SIGNAL: {
String sqlState = v0.getString();
if (sqlState.startsWith("00") || !SIGNAL_PATTERN.matcher(sqlState).matches()) {
throw DbException.getInvalidValueException("SQLSTATE", sqlState);
}
String msgText = v1.getString();
throw DbException.fromUser(sqlState, msgText);
}
default:
throw DbException.throwInternalError("type=" + info.type);
}
return result;
}
private Sequence getSequence(Session session, Value v0, Value v1) {
String schemaName, sequenceName;
if (v1 == null) {
Parser p = new Parser(session);
String sql = v0.getString();
Expression expr = p.parseExpression(sql);
if (expr instanceof ExpressionColumn) {
ExpressionColumn seq = (ExpressionColumn) expr;
schemaName = seq.getOriginalTableAliasName();
if (schemaName == null) {
schemaName = session.getCurrentSchemaName();
sequenceName = sql;
} else {
sequenceName = seq.getColumnName();
}
} else {
throw DbException.getSyntaxError(sql, 1);
}
} else {
schemaName = v0.getString();
sequenceName = v1.getString();
}
Schema s = database.findSchema(schemaName);
if (s == null) {
schemaName = StringUtils.toUpperEnglish(schemaName);
s = database.getSchema(schemaName);
}
Sequence seq = s.findSequence(sequenceName);
if (seq == null) {
sequenceName = StringUtils.toUpperEnglish(sequenceName);
seq = s.getSequence(sequenceName);
}
return seq;
}
private static long length(Value v) {
switch (v.getValueType()) {
case Value.BLOB:
case Value.CLOB:
case Value.BYTES:
case Value.JAVA_OBJECT:
return v.getType().getPrecision();
default:
return v.getString().length();
}
}
private static byte[] getPaddedArrayCopy(byte[] data, int blockSize) {
int size = MathUtils.roundUpInt(data.length, blockSize);
return Utils.copyBytes(data, size);
}
private static byte[] decrypt(String algorithm, byte[] key, byte[] data) {
BlockCipher cipher = CipherFactory.getBlockCipher(algorithm);
byte[] newKey = getPaddedArrayCopy(key, cipher.getKeyLength());
cipher.setKey(newKey);
byte[] newData = getPaddedArrayCopy(data, BlockCipher.ALIGN);
cipher.decrypt(newData, 0, newData.length);
return newData;
}
private static byte[] encrypt(String algorithm, byte[] key, byte[] data) {
BlockCipher cipher = CipherFactory.getBlockCipher(algorithm);
byte[] newKey = getPaddedArrayCopy(key, cipher.getKeyLength());
cipher.setKey(newKey);
byte[] newData = getPaddedArrayCopy(data, BlockCipher.ALIGN);
cipher.encrypt(newData, 0, newData.length);
return newData;
}
private static Value getHash(String algorithm, Value value, int iterations) {
if (!"SHA256".equalsIgnoreCase(algorithm)) {
throw DbException.getInvalidValueException("algorithm", algorithm);
}
if (iterations <= 0) {
throw DbException.getInvalidValueException("iterations", iterations);
}
MessageDigest md = hashImpl(value, "SHA-256");
if (md == null) {
return ValueNull.INSTANCE;
}
byte[] b = md.digest();
for (int i = 1; i < iterations; i++) {
b = md.digest(b);
}
return ValueBytes.getNoCopy(b);
}
private static String substring(String s, int start, int length) {
int len = s.length();
start--;
if (start < 0) {
start = 0;
}
if (length < 0) {
length = 0;
}
start = (start > len) ? len : start;
if (start + length > len) {
length = len - start;
}
return s.substring(start, start + length);
}
private static String repeat(String s, int count) {
StringBuilder buff = new StringBuilder(s.length() * count);
while (count-- > 0) {
buff.append(s);
}
return buff.toString();
}
private static String rawToHex(String s) {
int length = s.length();
StringBuilder buff = new StringBuilder(4 * length);
for (int i = 0; i < length; i++) {
String hex = Integer.toHexString(s.charAt(i) & 0xffff);
for (int j = hex.length(); j < 4; j++) {
buff.append('0');
}
buff.append(hex);
}
return buff.toString();
}
private static int locate(String search, String s, int start) {
if (start < 0) {
int i = s.length() + start;
return s.lastIndexOf(search, i) + 1;
}
int i = (start == 0) ? 0 : start - 1;
return s.indexOf(search, i) + 1;
}
private static String right(String s, int count) {
if (count < 0) {
count = 0;
} else if (count > s.length()) {
count = s.length();
}
return s.substring(s.length() - count);
}
private static String left(String s, int count) {
if (count < 0) {
count = 0;
} else if (count > s.length()) {
count = s.length();
}
return s.substring(0, count);
}
private static String insert(String s1, int start, int length, String s2) {
if (s1 == null) {
return s2;
}
if (s2 == null) {
return s1;
}
int len1 = s1.length();
int len2 = s2.length();
start--;
if (start < 0 || length <= 0 || len2 == 0 || start > len1) {
return s1;
}
if (start + length > len1) {
length = len1 - start;
}
return s1.substring(0, start) + s2 + s1.substring(start + length);
}
private static String hexToRaw(String s) {
int len = s.length();
if (len % 4 != 0) {
throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, s);
}
StringBuilder buff = new StringBuilder(len / 4);
for (int i = 0; i < len; i += 4) {
try {
char raw = (char) Integer.parseInt(s.substring(i, i + 4), 16);
buff.append(raw);
} catch (NumberFormatException e) {
throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, s);
}
}
return buff.toString();
}
private static int getDifference(String s1, String s2) {
s1 = getSoundex(s1);
s2 = getSoundex(s2);
int e = 0;
for (int i = 0; i < 4; i++) {
if (s1.charAt(i) == s2.charAt(i)) {
e++;
}
}
return e;
}
private static String translate(String original, String findChars,
String replaceChars) {
if (StringUtils.isNullOrEmpty(original) ||
StringUtils.isNullOrEmpty(findChars)) {
return original;
}
StringBuilder buff = null;
int replaceSize = replaceChars == null ? 0 : replaceChars.length();
for (int i = 0, size = original.length(); i < size; i++) {
char ch = original.charAt(i);
int index = findChars.indexOf(ch);
if (index >= 0) {
if (buff == null) {
buff = new StringBuilder(size);
if (i > 0) {
buff.append(original, 0, i);
}
}
if (index < replaceSize) {
ch = replaceChars.charAt(index);
}
}
if (buff != null) {
buff.append(ch);
}
}
return buff == null ? original : buff.toString();
}
private static double roundMagic(double d) {
if ((d < 0.000_000_000_000_1) && (d > -0.000_000_000_000_1)) {
return 0.0;
}
if ((d > 1_000_000_000_000d) || (d < -1_000_000_000_000d)) {
return d;
}
StringBuilder s = new StringBuilder();
s.append(d);
if (s.toString().indexOf('E') >= 0) {
return d;
}
int len = s.length();
if (len < 16) {
return d;
}
if (s.toString().indexOf('.') > len - 3) {
return d;
}
s.delete(len - 2, len);
len -= 2;
char c1 = s.charAt(len - 2);
char c2 = s.charAt(len - 3);
char c3 = s.charAt(len - 4);
if ((c1 == '0') && (c2 == '0') && (c3 == '0')) {
s.setCharAt(len - 1, '0');
} else if ((c1 == '9') && (c2 == '9') && (c3 == '9')) {
s.setCharAt(len - 1, '9');
s.append('9');
s.append('9');
s.append('9');
}
return Double.parseDouble(s.toString());
}
private static String getSoundex(String s) {
int len = s.length();
char[] chars = { '0', '0', '0', '0' };
char lastDigit = '0';
for (int i = 0, j = 0; i < len && j < 4; i++) {
char c = s.charAt(i);
char newDigit = c > SOUNDEX_INDEX.length ?
0 : SOUNDEX_INDEX[c];
if (newDigit != 0) {
if (j == 0) {
chars[j++] = c;
lastDigit = newDigit;
} else if (newDigit <= '6') {
if (newDigit != lastDigit) {
chars[j++] = newDigit;
lastDigit = newDigit;
}
} else if (newDigit == '7') {
lastDigit = newDigit;
}
}
}
return new String(chars);
}
private static Value oraHash(Value value, long bucket, long seed) {
if ((bucket & 0xffff_ffff_0000_0000L) != 0L) {
throw DbException.getInvalidValueException("bucket", bucket);
}
if ((seed & 0xffff_ffff_0000_0000L) != 0L) {
throw DbException.getInvalidValueException("seed", seed);
}
MessageDigest md = hashImpl(value, "SHA-1");
if (md == null) {
return ValueNull.INSTANCE;
}
if (seed != 0L) {
byte[] b = new byte[4];
Bits.writeInt(b, 0, (int) seed);
md.update(b);
}
long hc = Bits.readLong(md.digest(), 0);
return ValueLong.get((hc & Long.MAX_VALUE) % (bucket + 1));
}
private static MessageDigest hashImpl(Value value, String algorithm) {
MessageDigest md;
switch (value.getValueType()) {
case Value.NULL:
return null;
case Value.STRING:
case Value.STRING_FIXED:
case Value.STRING_IGNORECASE:
try {
md = MessageDigest.getInstance(algorithm);
md.update(value.getString().getBytes(StandardCharsets.UTF_8));
} catch (Exception ex) {
throw DbException.convert(ex);
}
break;
case Value.BLOB:
case Value.CLOB:
try {
md = MessageDigest.getInstance(algorithm);
byte[] buf = new byte[4096];
try (InputStream is = value.getInputStream()) {
for (int r; (r = is.read(buf)) > 0; ) {
md.update(buf, 0, r);
}
}
} catch (Exception ex) {
throw DbException.convert(ex);
}
break;
default:
try {
md = MessageDigest.getInstance(algorithm);
md.update(value.getBytesNoCopy());
} catch (Exception ex) {
throw DbException.convert(ex);
}
}
return md;
}
private Value regexpReplace(String input, String regexp, String replacement, String regexpMode) {
Mode mode = database.getMode();
if (mode.regexpReplaceBackslashReferences) {
if ((replacement.indexOf('\\') >= 0) || (replacement.indexOf('$') >= 0)) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < replacement.length(); i++) {
char c = replacement.charAt(i);
if (c == '$') {
sb.append('\\');
} else if (c == '\\' && ++i < replacement.length()) {
c = replacement.charAt(i);
sb.append(c >= '0' && c <= '9' ? '$' : '\\');
}
sb.append(c);
}
replacement = sb.toString();
}
}
boolean isInPostgreSqlMode = Mode.ModeEnum.PostgreSQL.equals(mode.getEnum());
int flags = makeRegexpFlags(regexpMode, isInPostgreSqlMode);
try {
Matcher matcher = Pattern.compile(regexp, flags).matcher(input);
return ValueString.get(isInPostgreSqlMode && (regexpMode == null || regexpMode.indexOf('g') < 0) ?
matcher.replaceFirst(replacement) : matcher.replaceAll(replacement),
mode.treatEmptyStringsAsNull);
} catch (PatternSyntaxException e) {
throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, regexp);
} catch (StringIndexOutOfBoundsException | IllegalArgumentException e) {
throw DbException.get(ErrorCode.LIKE_ESCAPE_ERROR_1, e, replacement);
}
}
private static int makeRegexpFlags(String stringFlags, boolean ignoreGlobalFlag) {
int flags = Pattern.UNICODE_CASE;
if (stringFlags != null) {
for (int i = 0; i < stringFlags.length(); ++i) {
switch (stringFlags.charAt(i)) {
case 'i':
flags |= Pattern.CASE_INSENSITIVE;
break;
case 'c':
flags &= ~Pattern.CASE_INSENSITIVE;
break;
case 'n':
flags |= Pattern.DOTALL;
break;
case 'm':
flags |= Pattern.MULTILINE;
break;
case 'g':
if (ignoreGlobalFlag) {
break;
}
default:
throw DbException.get(ErrorCode.INVALID_VALUE_2, stringFlags);
}
}
}
return flags;
}
@Override
public TypeInfo getType() {
return type;
}
@Override
public int getValueType() {
return type.getValueType();
}
@Override
public void mapColumns(ColumnResolver resolver, int level, int state) {
for (Expression e : args) {
if (e != null) {
e.mapColumns(resolver, level, state);
}
}
}
protected void checkParameterCount(int len) {
int min = 0, max = Integer.MAX_VALUE;
switch (info.type) {
case COALESCE:
case CSVREAD:
case LEAST:
case GREATEST:
min = 1;
break;
case CURRENT_TIME:
case LOCALTIME:
case CURRENT_TIMESTAMP:
case LOCALTIMESTAMP:
case RAND:
max = 1;
break;
case COMPRESS:
case LTRIM:
case RTRIM:
case TRIM:
case FILE_READ:
case ROUND:
case XMLTEXT:
case TRUNCATE:
case TO_TIMESTAMP:
case TO_TIMESTAMP_TZ:
min = 1;
max = 2;
break;
case DATE_TRUNC:
min = 2;
max = 2;
break;
case TO_CHAR:
case TO_DATE:
min = 1;
max = 3;
break;
case ORA_HASH:
min = 1;
max = 3;
break;
case HASH:
case REPLACE:
case LOCATE:
case INSTR:
case SUBSTR:
case SUBSTRING:
case LPAD:
case RPAD:
min = 2;
max = 3;
break;
case CONCAT:
case CONCAT_WS:
case CSVWRITE:
min = 2;
break;
case XMLNODE:
min = 1;
max = 4;
break;
case FORMATDATETIME:
case PARSEDATETIME:
min = 2;
max = 4;
break;
case CURRVAL:
case NEXTVAL:
min = 1;
max = 2;
break;
case DECODE:
case CASE:
min = 3;
break;
case REGEXP_REPLACE:
min = 3;
max = 4;
break;
case REGEXP_LIKE:
min = 2;
max = 3;
break;
default:
DbException.throwInternalError("type=" + info.type);
}
boolean ok = (len >= min) && (len <= max);
if (!ok) {
throw DbException.get(
ErrorCode.INVALID_PARAMETER_COUNT_2,
info.name, min + ".." + max);
}
}
public void doneWithParameters() {
if (info.parameterCount == VAR_ARGS) {
checkParameterCount(varArgs.size());
args = varArgs.toArray(new Expression[0]);
varArgs = null;
} else {
int len = args.length;
if (len > 0 && args[len - 1] == null) {
throw DbException.get(
ErrorCode.INVALID_PARAMETER_COUNT_2,
info.name, Integer.toString(len));
}
}
}
public void setDataType(Column col) {
TypeInfo type = col.getType();
this.type = type;
}
@Override
public Expression optimize(Session session) {
boolean allConst = info.deterministic;
for (int i = 0; i < args.length; i++) {
Expression e = args[i];
if (e == null) {
continue;
}
e = e.optimize(session);
args[i] = e;
if (!e.isConstant()) {
allConst = false;
}
}
TypeInfo typeInfo;
Expression p0 = args.length < 1 ? null : args[0];
switch (info.type) {
case DATE_ADD: {
typeInfo = TypeInfo.TYPE_TIMESTAMP;
if (p0.isConstant()) {
Expression p2 = args[2];
switch (p2.getType().getValueType()) {
case Value.TIME:
typeInfo = TypeInfo.TYPE_TIME;
break;
case Value.DATE: {
int field = DateTimeFunctions.getDatePart(p0.getValue(session).getString());
switch (field) {
case HOUR:
case MINUTE:
case SECOND:
case EPOCH:
case MILLISECOND:
case MICROSECOND:
case NANOSECOND:
break;
default:
type = TypeInfo.TYPE_DATE;
}
break;
}
case Value.TIMESTAMP_TZ:
type = TypeInfo.TYPE_TIMESTAMP_TZ;
}
}
break;
}
case EXTRACT: {
if (p0.isConstant() && DateTimeFunctions.getDatePart(p0.getValue(session).getString()) == Function.EPOCH) {
typeInfo = TypeInfo.getTypeInfo(Value.DECIMAL, ValueLong.PRECISION + ValueTimestamp.MAXIMUM_SCALE,
ValueTimestamp.MAXIMUM_SCALE, null);
} else {
typeInfo = TypeInfo.TYPE_INT;
}
break;
}
case DATE_TRUNC:
typeInfo = args[1].getType();
if (typeInfo.getValueType() != Value.TIMESTAMP_TZ) {
typeInfo = TypeInfo.TYPE_TIMESTAMP;
}
break;
case IFNULL:
case NULLIF:
case COALESCE:
case LEAST:
case GREATEST: {
typeInfo = TypeInfo.TYPE_UNKNOWN;
for (Expression e : args) {
if (e != ValueExpression.getNull()) {
TypeInfo type = e.getType();
int valueType = type.getValueType();
if (valueType != Value.UNKNOWN && valueType != Value.NULL) {
typeInfo = Value.getHigherType(typeInfo, type);
}
}
}
if (typeInfo.getValueType() == Value.UNKNOWN) {
typeInfo = TypeInfo.TYPE_STRING;
}
break;
}
case CASE:
case DECODE: {
typeInfo = TypeInfo.TYPE_UNKNOWN;
for (int i = 2, len = args.length; i < len; i += 2) {
Expression then = args[i];
if (then != ValueExpression.getNull()) {
TypeInfo type = then.getType();
int valueType = type.getValueType();
if (valueType != Value.UNKNOWN && valueType != Value.NULL) {
typeInfo = Value.getHigherType(typeInfo, type);
}
}
}
if (args.length % 2 == 0) {
Expression elsePart = args[args.length - 1];
if (elsePart != ValueExpression.getNull()) {
TypeInfo type = elsePart.getType();
int valueType = type.getValueType();
if (valueType != Value.UNKNOWN && valueType != Value.NULL) {
typeInfo = Value.getHigherType(typeInfo, type);
}
}
}
if (typeInfo.getValueType() == Value.UNKNOWN) {
typeInfo = TypeInfo.TYPE_STRING;
}
break;
}
case CASEWHEN:
typeInfo = Value.getHigherType(args[1].getType(), args[2].getType());
break;
case NVL2: {
TypeInfo t1 = args[1].getType(), t2 = args[2].getType();
switch (t1.getValueType()) {
case Value.STRING:
case Value.CLOB:
case Value.STRING_FIXED:
case Value.STRING_IGNORECASE:
typeInfo = TypeInfo.getTypeInfo(t1.getValueType(), -1, 0, null);
break;
default:
typeInfo = Value.getHigherType(t1, t2);
break;
}
break;
}
case CAST:
case CONVERT:
case TRUNCATE_VALUE:
if (type != null) {
typeInfo = type;
} else {
typeInfo = TypeInfo.TYPE_UNKNOWN;
}
break;
case TRUNCATE:
switch (p0.getType().getValueType()) {
case Value.STRING:
case Value.DATE:
case Value.TIMESTAMP:
typeInfo = TypeInfo.getTypeInfo(Value.TIMESTAMP, -1, 0, null);
break;
case Value.TIMESTAMP_TZ:
typeInfo = TypeInfo.getTypeInfo(Value.TIMESTAMP_TZ, -1, 0, null);
break;
default:
typeInfo = TypeInfo.TYPE_DOUBLE;
}
break;
case ABS:
case FLOOR:
case ROUND: {
TypeInfo type = p0.getType();
typeInfo = type;
if (typeInfo.getValueType() == Value.NULL) {
typeInfo = TypeInfo.TYPE_INT;
}
break;
}
case SET:
typeInfo = args[1].getType();
if (!(p0 instanceof Variable)) {
throw DbException.get(
ErrorCode.CAN_ONLY_ASSIGN_TO_VARIABLE_1, p0.getSQL(false));
}
break;
case FILE_READ: {
if (args.length == 1) {
typeInfo = TypeInfo.getTypeInfo(Value.BLOB, Integer.MAX_VALUE, 0, null);
} else {
typeInfo = TypeInfo.getTypeInfo(Value.CLOB, Integer.MAX_VALUE, 0, null);
}
break;
}
case SUBSTRING:
case SUBSTR: {
long p = args[0].getType().getPrecision();
if (args[1].isConstant()) {
p -= args[1].getValue(session).getLong() - 1;
}
if (args.length == 3 && args[2].isConstant()) {
p = Math.min(p, args[2].getValue(session).getLong());
}
p = Math.max(0, p);
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, p, 0, null);
break;
}
case ENCRYPT:
case DECRYPT:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, args[2].getType().getPrecision(), 0, null);
break;
case COMPRESS:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, args[0].getType().getPrecision(), 0, null);
break;
case CHAR:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, 1, 0, null);
break;
case CONCAT: {
long p = 0;
for (Expression e : args) {
TypeInfo type = e.getType();
p += type.getPrecision();
if (p < 0) {
p = Long.MAX_VALUE;
}
}
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, p, 0, null);
break;
}
case HEXTORAW:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, (args[0].getType().getPrecision() + 3) / 4, 0, null);
break;
case LCASE:
case LTRIM:
case RIGHT:
case RTRIM:
case UCASE:
case LOWER:
case UPPER:
case TRIM:
case STRINGDECODE:
case UTF8TOSTRING:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, args[0].getType().getPrecision(), 0, null);
break;
case RAWTOHEX:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, args[0].getType().getPrecision() * 4, 0, null);
break;
case SOUNDEX:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, 4, 0, null);
break;
case DAY_NAME:
case MONTH_NAME:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, 20, 0, null);
break;
default:
typeInfo = TypeInfo.getTypeInfo(info.returnDataType, -1, -1, null);
}
type = typeInfo;
if (allConst) {
Value v = getValue(session);
if (info.type == CAST || info.type == CONVERT) {
if (v == ValueNull.INSTANCE) {
return this;
}
DataType dt = DataType.getDataType(type.getValueType());
TypeInfo vt = v.getType();
if (dt.supportsPrecision && type.getPrecision() != vt.getPrecision()
|| dt.supportsScale && type.getScale() != vt.getScale()) {
return this;
}
}
return ValueExpression.get(v);
}
return this;
}
@Override
public void setEvaluatable(TableFilter tableFilter, boolean b) {
for (Expression e : args) {
if (e != null) {
e.setEvaluatable(tableFilter, b);
}
}
}
@Override
public StringBuilder getSQL(StringBuilder builder, boolean alwaysQuote) {
builder.append(info.name);
if (info.type == CASE) {
if (args[0] != null) {
builder.append(' ');
args[0].getSQL(builder, alwaysQuote);
}
for (int i = 1, len = args.length - 1; i < len; i += 2) {
builder.append(" WHEN ");
args[i].getSQL(builder, alwaysQuote);
builder.append(" THEN ");
args[i + 1].getSQL(builder, alwaysQuote);
}
if (args.length % 2 == 0) {
builder.append(" ELSE ");
args[args.length - 1].getSQL(builder, alwaysQuote);
}
return builder.append(" END");
}
boolean addParentheses = args.length > 0 || info.requireParentheses;
if (addParentheses) {
builder.append('(');
}
switch (info.type) {
case TRIM: {
switch (flags) {
case TRIM_LEADING:
builder.append("LEADING ");
break;
case TRIM_TRAILING:
builder.append("TRAILING ");
break;
}
if (args.length > 1) {
args[1].getSQL(builder, alwaysQuote).append(" FROM ");
}
args[0].getSQL(builder, alwaysQuote);
break;
}
case CAST: {
args[0].getSQL(builder, alwaysQuote).append(" AS ").append(new Column(null, type).getCreateSQL());
break;
}
case CONVERT: {
if (database.getMode().swapConvertFunctionParameters) {
builder.append(new Column(null, type).getCreateSQL()).append(',');
args[0].getSQL(builder, alwaysQuote);
} else {
args[0].getSQL(builder, alwaysQuote).append(',').append(new Column(null, type).getCreateSQL());
}
break;
}
case EXTRACT: {
ValueString v = (ValueString) ((ValueExpression) args[0]).getValue(null);
builder.append(v.getString()).append(" FROM ");
args[1].getSQL(builder, alwaysQuote);
break;
}
default:
writeExpressions(builder, args, alwaysQuote);
}
if (addParentheses) {
builder.append(')');
}
return builder;
}
@Override
public void updateAggregate(Session session, int stage) {
for (Expression e : args) {
if (e != null) {
e.updateAggregate(session, stage);
}
}
}
public int getFunctionType() {
return info.type;
}
@Override
public String getName() {
return info.name;
}
@Override
public ValueResultSet getValueForColumnList(Session session,
Expression[] argList) {
switch (info.type) {
case CSVREAD: {
String fileName = argList[0].getValue(session).getString();
if (fileName == null) {
throw DbException.get(ErrorCode.PARAMETER_NOT_SET_1, "fileName");
}
String columnList = argList.length < 2 ?
null : argList[1].getValue(session).getString();
Csv csv = new Csv();
String options = argList.length < 3 ?
null : argList[2].getValue(session).getString();
String charset = null;
if (options != null && options.indexOf('=') >= 0) {
charset = csv.setOptions(options);
} else {
charset = options;
String fieldSeparatorRead = argList.length < 4 ?
null : argList[3].getValue(session).getString();
String fieldDelimiter = argList.length < 5 ?
null : argList[4].getValue(session).getString();
String escapeCharacter = argList.length < 6 ?
null : argList[5].getValue(session).getString();
setCsvDelimiterEscape(csv, fieldSeparatorRead, fieldDelimiter,
escapeCharacter);
}
char fieldSeparator = csv.getFieldSeparatorRead();
String[] columns = StringUtils.arraySplit(columnList, fieldSeparator, true);
ResultSet rs = null;
ValueResultSet x;
try {
rs = csv.read(fileName, columns, charset);
x = ValueResultSet.get(session, rs, 0);
} catch (SQLException e) {
throw DbException.convert(e);
} finally {
csv.close();
JdbcUtils.closeSilently(rs);
}
return x;
}
default:
break;
}
return (ValueResultSet) getValueWithArgs(session, argList);
}
private static void setCsvDelimiterEscape(Csv csv, String fieldSeparator,
String fieldDelimiter, String escapeCharacter) {
if (fieldSeparator != null) {
csv.setFieldSeparatorWrite(fieldSeparator);
if (!fieldSeparator.isEmpty()) {
char fs = fieldSeparator.charAt(0);
csv.setFieldSeparatorRead(fs);
}
}
if (fieldDelimiter != null) {
char fd = fieldDelimiter.isEmpty() ? 0 : fieldDelimiter.charAt(0);
csv.setFieldDelimiter(fd);
}
if (escapeCharacter != null) {
char ec = escapeCharacter.isEmpty() ? 0 : escapeCharacter.charAt(0);
csv.setEscapeCharacter(ec);
}
}
@Override
public Expression[] getArgs() {
return args;
}
@Override
public boolean isEverything(ExpressionVisitor visitor) {
for (Expression e : args) {
if (e != null && !e.isEverything(visitor)) {
return false;
}
}
switch (visitor.getType()) {
case ExpressionVisitor.DETERMINISTIC:
case ExpressionVisitor.QUERY_COMPARABLE:
case ExpressionVisitor.READONLY:
return info.deterministic;
case ExpressionVisitor.EVALUATABLE:
case ExpressionVisitor.GET_DEPENDENCIES:
case ExpressionVisitor.INDEPENDENT:
case ExpressionVisitor.NOT_FROM_RESOLVER:
case ExpressionVisitor.OPTIMIZABLE_AGGREGATE:
case ExpressionVisitor.SET_MAX_DATA_MODIFICATION_ID:
case ExpressionVisitor.GET_COLUMNS1:
case ExpressionVisitor.GET_COLUMNS2:
return true;
default:
throw DbException.throwInternalError("type=" + visitor.getType());
}
}
@Override
public int getCost() {
int cost = 3;
for (Expression e : args) {
if (e != null) {
cost += e.getCost();
}
}
return cost;
}
@Override
public boolean isDeterministic() {
return info.deterministic;
}
@Override
public boolean isBufferResultSetToLocalTemp() {
return info.bufferResultSetToLocalTemp;
}
@Override
public boolean isGeneratedKey() {
return info.type == NEXTVAL;
}
@Override
public int getSubexpressionCount() {
return args.length;
}
@Override
public Expression getSubexpression(int index) {
return args[index];
}
}
Function
SIGNAL_PATTERN: Pattern
VAR_ARGS: int
static class initializer
