/*
 * Copyright 2002-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.jdbc.core.simple;

import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Map;
import javax.sql.DataSource;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.core.namedparam.SqlParameterSource;

A SimpleJdbcCall is a multi-threaded, reusable object representing a call
to a stored procedure or a stored function. It provides meta-data processing
to simplify the code needed to access basic stored procedures/functions.
All you need to provide is the name of the procedure/function and a Map
containing the parameters when you execute the call. The names of the
supplied parameters will be matched up with in and out parameters declared
when the stored procedure was created.
The meta-data processing is based on the DatabaseMetaData provided by
the JDBC driver. Since we rely on the JDBC driver, this "auto-detection"
can only be used for databases that are known to provide accurate meta-data.
These currently include Derby, MySQL, Microsoft SQL Server, Oracle, DB2,
Sybase and PostgreSQL. For any other databases you are required to declare
all parameters explicitly. You can of course declare all parameters
explicitly even if the database provides the necessary meta-data. In that
case your declared parameters will take precedence. You can also turn off
any meta-data processing if you want to use parameter names that do not
match what is declared during the stored procedure compilation.
The actual insert is being handled using Spring's JdbcTemplate. 
Many of the configuration methods return the current instance of the
SimpleJdbcCall in order to provide the ability to chain multiple ones
together in a "fluent" interface style.
Author:
Thomas Risberg, Stephane Nicoll
See Also:
DatabaseMetaData
JdbcTemplate
Since:
2.5/**
 * A SimpleJdbcCall is a multi-threaded, reusable object representing a call
 * to a stored procedure or a stored function. It provides meta-data processing
 * to simplify the code needed to access basic stored procedures/functions.
 * All you need to provide is the name of the procedure/function and a Map
 * containing the parameters when you execute the call. The names of the
 * supplied parameters will be matched up with in and out parameters declared
 * when the stored procedure was created.
 *
 * <p>The meta-data processing is based on the DatabaseMetaData provided by
 * the JDBC driver. Since we rely on the JDBC driver, this "auto-detection"
 * can only be used for databases that are known to provide accurate meta-data.
 * These currently include Derby, MySQL, Microsoft SQL Server, Oracle, DB2,
 * Sybase and PostgreSQL. For any other databases you are required to declare
 * all parameters explicitly. You can of course declare all parameters
 * explicitly even if the database provides the necessary meta-data. In that
 * case your declared parameters will take precedence. You can also turn off
 * any meta-data processing if you want to use parameter names that do not
 * match what is declared during the stored procedure compilation.
 *
 * <p>The actual insert is being handled using Spring's {@link JdbcTemplate}.
 *
 * <p>Many of the configuration methods return the current instance of the
 * SimpleJdbcCall in order to provide the ability to chain multiple ones
 * together in a "fluent" interface style.
 *
 * @author Thomas Risberg
 * @author Stephane Nicoll
 * @since 2.5
 * @see java.sql.DatabaseMetaData
 * @see org.springframework.jdbc.core.JdbcTemplate
 */
public class SimpleJdbcCall extends AbstractJdbcCall implements SimpleJdbcCallOperations {

	
Constructor that takes one parameter with the JDBC DataSource to use when
creating the underlying JdbcTemplate.
Params:
dataSource – the DataSource to use
See Also:
JdbcAccessor.setDataSource/**
	 * Constructor that takes one parameter with the JDBC DataSource to use when
	 * creating the underlying JdbcTemplate.
	 * @param dataSource the {@code DataSource} to use
	 * @see org.springframework.jdbc.core.JdbcTemplate#setDataSource
	 */
	public SimpleJdbcCall(DataSource dataSource) {
		super(dataSource);
	}

	
Alternative Constructor that takes one parameter with the JdbcTemplate to be used.
Params:
jdbcTemplate – the JdbcTemplate to use
See Also:
JdbcAccessor.setDataSource/**
	 * Alternative Constructor that takes one parameter with the JdbcTemplate to be used.
	 * @param jdbcTemplate the {@code JdbcTemplate} to use
	 * @see org.springframework.jdbc.core.JdbcTemplate#setDataSource
	 */
	public SimpleJdbcCall(JdbcTemplate jdbcTemplate) {
		super(jdbcTemplate);
	}


	@Override
	public SimpleJdbcCall withProcedureName(String procedureName) {
		setProcedureName(procedureName);
		setFunction(false);
		return this;
	}

	@Override
	public SimpleJdbcCall withFunctionName(String functionName) {
		setProcedureName(functionName);
		setFunction(true);
		return this;
	}

	@Override
	public SimpleJdbcCall withSchemaName(String schemaName) {
		setSchemaName(schemaName);
		return this;
	}

	@Override
	public SimpleJdbcCall withCatalogName(String catalogName) {
		setCatalogName(catalogName);
		return this;
	}

	@Override
	public SimpleJdbcCall withReturnValue() {
		setReturnValueRequired(true);
		return this;
	}

	@Override
	public SimpleJdbcCall declareParameters(SqlParameter... sqlParameters) {
		for (SqlParameter sqlParameter : sqlParameters) {
			if (sqlParameter != null) {
				addDeclaredParameter(sqlParameter);
			}
		}
		return this;
	}

	@Override
	public SimpleJdbcCall useInParameterNames(String... inParameterNames) {
		setInParameterNames(new LinkedHashSet<>(Arrays.asList(inParameterNames)));
		return this;
	}

	@Override
	public SimpleJdbcCall returningResultSet(String parameterName, RowMapper<?> rowMapper) {
		addDeclaredRowMapper(parameterName, rowMapper);
		return this;
	}

	@Override
	public SimpleJdbcCall withoutProcedureColumnMetaDataAccess() {
		setAccessCallParameterMetaData(false);
		return this;
	}

	@Override
	public SimpleJdbcCall withNamedBinding() {
		setNamedBinding(true);
		return this;
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeFunction(Class<T> returnType, Object... args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeFunction(Class<T> returnType, Map<String, ?> args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeFunction(Class<T> returnType, SqlParameterSource args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeObject(Class<T> returnType, Object... args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeObject(Class<T> returnType, Map<String, ?> args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T executeObject(Class<T> returnType, SqlParameterSource args) {
		return (T) doExecute(args).get(getScalarOutParameterName());
	}

	@Override
	public Map<String, Object> execute(Object... args) {
		return doExecute(args);
	}

	@Override
	public Map<String, Object> execute(Map<String, ?> args) {
		return doExecute(args);
	}

	@Override
	public Map<String, Object> execute(SqlParameterSource parameterSource) {
		return doExecute(parameterSource);
	}

}