oracle.toplink.essentials.internal.parsing.HavingNode Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*/
// Copyright (c) 1998, 2007, Oracle. All rights reserved.
/**
* INTERNAL
* Purpose: This node represents a HAVING
*
Responsibilities:
* - Generate the correct expression for HAVING
*
*/
package oracle.toplink.essentials.internal.parsing;
// TopLink Imports
import oracle.toplink.essentials.queryframework.ReportQuery;
import oracle.toplink.essentials.queryframework.ObjectLevelReadQuery;
import oracle.toplink.essentials.exceptions.EJBQLException;
import oracle.toplink.essentials.expressions.Expression;
public class HavingNode extends MajorNode {
private Node having = null;
/**
* INTERNAL
* Validate the current node.
*/
public void validate(ParseTreeContext context, GroupByNode groupbyNode) {
if (having != null) {
having.validate(context);
if ((groupbyNode != null) && !groupbyNode.isValidHavingExpr(having)) {
throw EJBQLException.invalidHavingExpression(
context.getQueryInfo(), having.getLine(), having.getColumn(),
having.getAsString(), groupbyNode.getAsString());
}
}
}
/**
* INTERNAL
* Add the having expression to the passed query
*/
public void addHavingToQuery(ObjectLevelReadQuery theQuery, GenerationContext context) {
if (theQuery.isReportQuery()) {
Expression havingExpression = getHaving().generateExpression(context);
((ReportQuery)theQuery).setHavingExpression(havingExpression);
}
}
/**
* INTERNAL
* Return the HAVING expression
*/
public Node getHaving() {
return having;
}
/**
* INTERNAL
* Set the HAVING expression
*/
public void setHaving(Node having) {
this.having = having;
}
}