org.eclipse.persistence.internal.expressions.SQLDeleteStatement Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction 346465e

There is a newer version: 5.0.0-B03

/*******************************************************************************
 * Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
 ******************************************************************************/  
package org.eclipse.persistence.internal.expressions;

import java.io.*;
import org.eclipse.persistence.exceptions.*;
import org.eclipse.persistence.queries.*;
import org.eclipse.persistence.internal.databaseaccess.DatabaseCall;
import org.eclipse.persistence.internal.sessions.AbstractSession;

/**
 * Purpose: Print DELETE statement.
 * 
Responsibilities:

 *  Print DELETE statement.
 * 
 * @author Dorin Sandu
 * @since TOPLink/Java 1.0
 */
public class SQLDeleteStatement extends SQLModifyStatement {

    /**
     * Append the string containing the SQL insert string for the given table.
     */
    public DatabaseCall buildCall(AbstractSession session) {
        SQLCall call = new SQLCall();
        call.returnNothing();

        Writer writer = new CharArrayWriter(100);
        try {
            writer.write("DELETE ");

            if (getHintString() != null) {
                writer.write(getHintString());
                writer.write(" ");
            }
            writer.write("FROM ");
            writer.write(getTable().getQualifiedNameDelimited(session.getPlatform()));

            if (getWhereClause() != null) {
                writer.write(" WHERE ");
                ExpressionSQLPrinter printer = new ExpressionSQLPrinter(session, getTranslationRow(), call, false, getBuilder());
                printer.setWriter(writer);
                printer.printExpression(getWhereClause());
            }

            call.setSQLString(writer.toString());
        } catch (IOException exception) {
            throw ValidationException.fileError(exception);
        }
        return call;
    }
}