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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
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 */
package org.hibernate.dialect;

import java.sql.Types;

import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.type.StandardBasicTypes;


An Hibernate 3 SQL dialect for Mimer SQL. This dialect requires Mimer SQL 9.2.1 or later
because of the mappings to NCLOB, BINARY, and BINARY VARYING.

Author:Fredrik lund 
/**
 * An Hibernate 3 SQL dialect for Mimer SQL. This dialect requires Mimer SQL 9.2.1 or later
 * because of the mappings to NCLOB, BINARY, and BINARY VARYING.
 *
 * @author Fredrik lund <fredrik.alund@mimer.se>
 */
@SuppressWarnings("deprecation")
public class MimerSQLDialect extends Dialect {

	private static final int NATIONAL_CHAR_LENGTH = 2000;
	private static final int BINARY_MAX_LENGTH = 2000;

	
Even thoug Mimer SQL supports character and binary columns up to 15 000 in lenght,
this is also the maximum width of the table (exluding LOBs). To avoid breaking the limit all the
time we limit the length of the character columns to CHAR_MAX_LENTH, NATIONAL_CHAR_LENGTH for national
characters, and BINARY_MAX_LENGTH for binary types.

/**
	 * Even thoug Mimer SQL supports character and binary columns up to 15 000 in lenght,
	 * this is also the maximum width of the table (exluding LOBs). To avoid breaking the limit all the
	 * time we limit the length of the character columns to CHAR_MAX_LENTH, NATIONAL_CHAR_LENGTH for national
	 * characters, and BINARY_MAX_LENGTH for binary types.
	 */
	public MimerSQLDialect() {
		super();
		registerColumnType( Types.BIT, "ODBC.BIT" );
		registerColumnType( Types.BIGINT, "BIGINT" );
		registerColumnType( Types.SMALLINT, "SMALLINT" );
		registerColumnType( Types.TINYINT, "ODBC.TINYINT" );
		registerColumnType( Types.INTEGER, "INTEGER" );
		registerColumnType( Types.CHAR, "NCHAR(1)" );
		registerColumnType( Types.VARCHAR, NATIONAL_CHAR_LENGTH, "NATIONAL CHARACTER VARYING($l)" );
		registerColumnType( Types.VARCHAR, "NCLOB($l)" );
		registerColumnType( Types.LONGVARCHAR, "CLOB($1)" );
		registerColumnType( Types.FLOAT, "FLOAT" );
		registerColumnType( Types.DOUBLE, "DOUBLE PRECISION" );
		registerColumnType( Types.DATE, "DATE" );
		registerColumnType( Types.TIME, "TIME" );
		registerColumnType( Types.TIMESTAMP, "TIMESTAMP" );
		registerColumnType( Types.VARBINARY, BINARY_MAX_LENGTH, "BINARY VARYING($l)" );
		registerColumnType( Types.VARBINARY, "BLOB($1)" );
		registerColumnType( Types.LONGVARBINARY, "BLOB($1)" );
		registerColumnType( Types.BINARY, BINARY_MAX_LENGTH, "BINARY" );
		registerColumnType( Types.BINARY, "BLOB($1)" );
		registerColumnType( Types.NUMERIC, "NUMERIC(19, $l)" );
		registerColumnType( Types.BLOB, "BLOB($l)" );
		registerColumnType( Types.CLOB, "NCLOB($l)" );

		registerFunction( "abs", new StandardSQLFunction( "abs" ) );
		registerFunction( "sign", new StandardSQLFunction( "sign", StandardBasicTypes.INTEGER ) );
		registerFunction( "ceiling", new StandardSQLFunction( "ceiling" ) );
		registerFunction( "floor", new StandardSQLFunction( "floor" ) );
		registerFunction( "round", new StandardSQLFunction( "round" ) );

		registerFunction( "dacos", new StandardSQLFunction( "dacos", StandardBasicTypes.DOUBLE ) );
		registerFunction( "acos", new StandardSQLFunction( "dacos", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dasin", new StandardSQLFunction( "dasin", StandardBasicTypes.DOUBLE ) );
		registerFunction( "asin", new StandardSQLFunction( "dasin", StandardBasicTypes.DOUBLE ) );
		registerFunction( "datan", new StandardSQLFunction( "datan", StandardBasicTypes.DOUBLE ) );
		registerFunction( "atan", new StandardSQLFunction( "datan", StandardBasicTypes.DOUBLE ) );
		registerFunction( "datan2", new StandardSQLFunction( "datan2", StandardBasicTypes.DOUBLE ) );
		registerFunction( "atan2", new StandardSQLFunction( "datan2", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dcos", new StandardSQLFunction( "dcos", StandardBasicTypes.DOUBLE ) );
		registerFunction( "cos", new StandardSQLFunction( "dcos", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dcot", new StandardSQLFunction( "dcot", StandardBasicTypes.DOUBLE ) );
		registerFunction( "cot", new StandardSQLFunction( "dcot", StandardBasicTypes.DOUBLE ) );
		registerFunction( "ddegrees", new StandardSQLFunction( "ddegrees", StandardBasicTypes.DOUBLE ) );
		registerFunction( "degrees", new StandardSQLFunction( "ddegrees", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dexp", new StandardSQLFunction( "dexp", StandardBasicTypes.DOUBLE ) );
		registerFunction( "exp", new StandardSQLFunction( "dexp", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dlog", new StandardSQLFunction( "dlog", StandardBasicTypes.DOUBLE ) );
		registerFunction( "log", new StandardSQLFunction( "dlog", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dlog10", new StandardSQLFunction( "dlog10", StandardBasicTypes.DOUBLE ) );
		registerFunction( "log10", new StandardSQLFunction( "dlog10", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dradian", new StandardSQLFunction( "dradian", StandardBasicTypes.DOUBLE ) );
		registerFunction( "radian", new StandardSQLFunction( "dradian", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dsin", new StandardSQLFunction( "dsin", StandardBasicTypes.DOUBLE ) );
		registerFunction( "sin", new StandardSQLFunction( "dsin", StandardBasicTypes.DOUBLE ) );
		registerFunction( "soundex", new StandardSQLFunction( "soundex", StandardBasicTypes.STRING ) );
		registerFunction( "dsqrt", new StandardSQLFunction( "dsqrt", StandardBasicTypes.DOUBLE ) );
		registerFunction( "sqrt", new StandardSQLFunction( "dsqrt", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dtan", new StandardSQLFunction( "dtan", StandardBasicTypes.DOUBLE ) );
		registerFunction( "tan", new StandardSQLFunction( "dtan", StandardBasicTypes.DOUBLE ) );
		registerFunction( "dpower", new StandardSQLFunction( "dpower" ) );
		registerFunction( "power", new StandardSQLFunction( "dpower" ) );

		registerFunction( "date", new StandardSQLFunction( "date", StandardBasicTypes.DATE ) );
		registerFunction( "dayofweek", new StandardSQLFunction( "dayofweek", StandardBasicTypes.INTEGER ) );
		registerFunction( "dayofyear", new StandardSQLFunction( "dayofyear", StandardBasicTypes.INTEGER ) );
		registerFunction( "time", new StandardSQLFunction( "time", StandardBasicTypes.TIME ) );
		registerFunction( "timestamp", new StandardSQLFunction( "timestamp", StandardBasicTypes.TIMESTAMP ) );
		registerFunction( "week", new StandardSQLFunction( "week", StandardBasicTypes.INTEGER ) );


		registerFunction( "varchar", new StandardSQLFunction( "varchar", StandardBasicTypes.STRING ) );
		registerFunction( "real", new StandardSQLFunction( "real", StandardBasicTypes.FLOAT ) );
		registerFunction( "bigint", new StandardSQLFunction( "bigint", StandardBasicTypes.LONG ) );
		registerFunction( "char", new StandardSQLFunction( "char", StandardBasicTypes.CHARACTER ) );
		registerFunction( "integer", new StandardSQLFunction( "integer", StandardBasicTypes.INTEGER ) );
		registerFunction( "smallint", new StandardSQLFunction( "smallint", StandardBasicTypes.SHORT ) );

		registerFunction( "ascii_char", new StandardSQLFunction( "ascii_char", StandardBasicTypes.CHARACTER ) );
		registerFunction( "ascii_code", new StandardSQLFunction( "ascii_code", StandardBasicTypes.STRING ) );
		registerFunction( "unicode_char", new StandardSQLFunction( "unicode_char", StandardBasicTypes.LONG ) );
		registerFunction( "unicode_code", new StandardSQLFunction( "unicode_code", StandardBasicTypes.STRING ) );
		registerFunction( "upper", new StandardSQLFunction( "upper" ) );
		registerFunction( "lower", new StandardSQLFunction( "lower" ) );
		registerFunction( "char_length", new StandardSQLFunction( "char_length", StandardBasicTypes.LONG ) );
		registerFunction( "bit_length", new StandardSQLFunction( "bit_length", StandardBasicTypes.STRING ) );

		getDefaultProperties().setProperty( Environment.USE_STREAMS_FOR_BINARY, "true" );
		getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, "50" );
	}


	@Override
	public String getAddColumnString() {
		return "add column";
	}

	@Override
	public boolean dropConstraints() {
		return false;
	}

	@Override
	public boolean supportsIdentityColumns() {
		return false;
	}

	@Override
	public boolean supportsSequences() {
		return true;
	}

	@Override
	public String getSequenceNextValString(String sequenceName) {
		return "select next_value of " + sequenceName + " from system.onerow";
	}

	@Override
	public String getCreateSequenceString(String sequenceName) {
		return "create unique sequence " + sequenceName;
	}

	@Override
	public String getDropSequenceString(String sequenceName) {
		return "drop sequence " + sequenceName + " restrict";
	}

	@Override
	public boolean supportsLimit() {
		return false;
	}

	@Override
	public String getCascadeConstraintsString() {
		return " cascade";
	}

	@Override
	public String getQuerySequencesString() {
		return "select sequence_schema || '.' || sequence_name from information_schema.ext_sequences";
	}

	@Override
	public boolean forUpdateOfColumns() {
		return false;
	}

	@Override
	public boolean supportsOuterJoinForUpdate() {
		return false;
	}
}