/*
 * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software;Designed and Developed mainly by many Chinese 
 * opensource volunteers. you can redistribute it and/or modify it under the 
 * terms of the GNU General Public License version 2 only, as published by the
 * Free Software Foundation.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Any questions about this component can be directed to it's project Web address 
 * https://code.google.com/p/opencloudb/.
 *
 */
package com.akiban.sql.parser;

import com.akiban.sql.StandardException;

/**
 * A TestConstraintNode is used to determine when a constraint
 * has been violated.
 *
 */

public class TestConstraintNode extends UnaryLogicalOperatorNode
{
    private String sqlState;
    private String tableName;
    private String constraintName;

    /**
     * Initializer for a TestConstraintNode
     *
     * @param booleanValue The operand of the constraint test
     * @param sqlState The SQLState of the exception to throw if the
     *                               constraint has failed
     * @param tableName The name of the table that the constraint is on
     * @param constraintName The name of the constraint being checked
     */

    public void init(Object booleanValue,
                     Object sqlState,
                     Object tableName,
                     Object constraintName) 
            throws StandardException {
        super.init(booleanValue, "throwExceptionIfFalse");
        this.sqlState = (String)sqlState;
        this.tableName = (String)tableName;
        this.constraintName = (String)constraintName;
    }

    /**
     * Fill this node with a deep copy of the given node.
     */
    public void copyFrom(QueryTreeNode node) throws StandardException {
        super.copyFrom(node);

        TestConstraintNode other = (TestConstraintNode)node;
        this.sqlState = other.sqlState;
        this.tableName = other.tableName;
        this.constraintName = other.constraintName;
    }

}