WindowNode.java

/**
 * Copyright © 2012 Akiban Technologies, Inc.  All rights
 * reserved.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * This program may also be available under different license terms.
 * For more information, see www.akiban.com or contact
 * licensing@akiban.com.
 *
 * Contributors:
 * Akiban Technologies, Inc.
 */

/* The original from which this derives bore the following: */

/*

   Derby - Class org.apache.derby.impl.sql.compile.WindowNode

   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to you 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 com.akiban.sql.parser;

import com.akiban.sql.StandardException;

/**
 * Superclass of window definition and window reference.
 */
public abstract class WindowNode extends QueryTreeNode
{
    /**
     * The provided name of the window if explicitly defined in a window
     * clause. If the definition is inlined, currently the definition has
     * windowName "IN_LINE".    The standard 2003 sec. 4.14.9 calls for a
     * impl. defined one.
     */
    private String windowName;

    /**
     * Initializer
     *
     * @param arg1 The window name
     *
     * @exception StandardException
     */
    public void init(Object arg1) throws StandardException {
        windowName = (String)arg1;
    }

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

        WindowNode other = (WindowNode)node;
        this.windowName = other.windowName;
    }

    /**
     * @return the name of this window
     */
    public String getName() {
        return windowName;
    }

}