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EclipseLink build based upon Git transaction f2b9fc5
/*
* Copyright (c) 1998, 2018 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 v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.internal.jpa.parsing;
import java.util.Iterator;
import java.util.List;
import org.eclipse.persistence.expressions.*;
/**
* INTERNAL
* Purpose: Represent a CONCAT in EJBQL
*
Responsibilities:
* - Generate the correct expression for a CONCAT in EJBQL
*
* @author Jon Driscoll and Joel Lucuik
* @since TopLink 4.0
*/
public class ConcatNode extends StringFunctionNode {
protected List objects = null;
/**
* ConcatNode constructor comment.
*/
public ConcatNode() {
super();
}
/**
* INTERNAL
* Validate node and calculate its type.
*/
public void validate(ParseTreeContext context) {
super.validate(context);
TypeHelper typeHelper = context.getTypeHelper();
Iterator i = objects.iterator();
while (i.hasNext()){
Node node = (Node)i.next();
node.validate(context);
node.validateParameter(context, typeHelper.getStringType());
}
setType(typeHelper.getStringType());
}
/**
* INTERNAL
* Generate the EclipseLink expression for this node
*/
public Expression generateExpression(GenerationContext context) {
Expression whereClause = ((Node)objects.get(0)).generateExpression(context);
for (int i=1;i