/******************************************************************************* | |
* Copyright (c) 1998, 2013 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 v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.jpa.parsing; | |
import org.eclipse.persistence.expressions.*; | |
/** | |
* INTERNAL | |
* <p><b>Purpose</b>: Represent a BETWEEN in EJBQL | |
* <p><b>Responsibilities</b>:<ul> | |
* <li> Generate the correct expression for a BETWEEN in EJBQL | |
* </ul> | |
* @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 calculate 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 EclipseLink 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; | |
} | |
} |