brokeredpreparedstatement30.java

来自「derby database source code.good for you.」· Java 代码 · 共 73 行

/*

   Derby - Class org.apache.derby.iapi.jdbc.BrokeredPreparedStatement30

   Copyright 2003, 2004 The Apache Software Foundation or its licensors, as applicable.

   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.apache.derby.iapi.jdbc;

import java.sql.*;
import java.net.URL;

/**
	JDBC 3 implementation of PreparedStatement.
*/
public class BrokeredPreparedStatement30 extends BrokeredPreparedStatement {

	private final Object generatedKeys;
	public BrokeredPreparedStatement30(BrokeredStatementControl control, int jdbcLevel, String sql, Object generatedKeys) throws SQLException {
		super(control, jdbcLevel, sql);
		this.generatedKeys = generatedKeys;
	}

	public final void setURL(int i, URL x)
        throws SQLException
    {
        getPreparedStatement().setURL( i, x);
    }
    public final ParameterMetaData getParameterMetaData()
        throws SQLException
    {
        return getPreparedStatement().getParameterMetaData();
    }
	/**
		Create a duplicate PreparedStatement to this, including state, from the passed in Connection.
	*/
	public PreparedStatement createDuplicateStatement(Connection conn, PreparedStatement oldStatement) throws SQLException {

		PreparedStatement newStatement;

		if (generatedKeys == null)
			newStatement = conn.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
		else {
			// The prepareStatement() calls that take a generated key value do not take resultSet* type
			// parameters, but since they don't return ResultSets that is OK. There are only for INSERT statements.
			if (generatedKeys instanceof Integer)
				newStatement = conn.prepareStatement(sql, ((Integer) generatedKeys).intValue());
			else if (generatedKeys instanceof int[])
				newStatement = conn.prepareStatement(sql, (int[]) generatedKeys);
			else
				newStatement = conn.prepareStatement(sql, (String[]) generatedKeys);
		}


		setStatementState(oldStatement, newStatement);

		return newStatement;
	}
}