oracle.toplink.essentials.internal.parsing.BetweenNode Maven / Gradle / Ivy
/*
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* (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
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// Copyright (c) 1998, 2007, Oracle. All rights reserved.
package oracle.toplink.essentials.internal.parsing;
import oracle.toplink.essentials.expressions.*;
/**
* INTERNAL
* Purpose: Represent a BETWEEN in EJBQL
*
Responsibilities:
* - Generate the correct expression for a BETWEEN in EJBQL
*
* @author Jon Driscoll and Joel Lucuik
* @since TopLink 4.0
*/
public class BetweenNode extends SimpleConditionalExpressionNode {
protected Node rightForBetween;
protected Node rightForAnd;
/**
* BetweenNode constructor comment.
*/
public BetweenNode() {
super();
}
/**
* INTERNAL
* Check the child nodes for an unqualified field access and if there are
* any, replace them by a qualified field access.
*/
public Node qualifyAttributeAccess(ParseTreeContext context) {
if (left != null) {
left = left.qualifyAttributeAccess(context);
}
if (rightForBetween != null) {
rightForBetween = rightForBetween.qualifyAttributeAccess(context);
}
if (rightForAnd != null) {
rightForAnd = rightForAnd.qualifyAttributeAccess(context);
}
return this;
}
/**
* INTERNAL
* Validate node and calcualte its type.
*/
public void validate(ParseTreeContext context) {
Object type = null;
if (left != null) {
left.validate(context);
type = left.getType();
}
if (rightForBetween != null) {
rightForBetween.validate(context);
rightForBetween.validateParameter(context, type);
}
if (rightForAnd != null) {
rightForAnd.validate(context);
rightForAnd.validateParameter(context, type);
}
TypeHelper typeHelper = context.getTypeHelper();
setType(typeHelper.getBooleanType());
}
/**
* INTERNAL
* Return a TopLink expression by 'BETWEEN' and 'AND'ing the expressions from the left,
* rightForBetween and rightForAnd nodes
*/
public Expression generateExpression(GenerationContext context) {
// Get the left expression
Expression whereClause = getLeft().generateExpression(context);
// Between it with whatever the rightForBetween expression and rightForAnd expressions are
whereClause = whereClause.between(getRightForBetween().generateExpression(context), getRightForAnd().generateExpression(context));
// and return the expression...
return whereClause;
}
public Node getRightForAnd() {
return rightForAnd;
}
public Node getRightForBetween() {
return rightForBetween;
}
public boolean hasRightForAnd() {
return rightForAnd != null;
}
public boolean hasRightForBetween() {
return rightForBetween != null;
}
public void setRightForAnd(Node newRightForAnd) {
rightForAnd = newRightForAnd;
}
public void setRightForBetween(Node newRightForBetween) {
rightForBetween = newRightForBetween;
}
}