/******************************************************************************* | |
* 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.Expression; | |
import org.eclipse.persistence.internal.expressions.DateConstantExpression; | |
/** | |
* INTERNAL | |
* <p><b>Purpose</b>: Represent a Date, Time or TimeStamp literal | |
* <p><b>Responsibilities</b>:<ul> | |
* <li> Generate the correct expression for the temporal expression | |
* </ul> | |
*/ | |
public class TemporalLiteralNode extends LiteralNode { | |
public enum TemporalType {DATE, TIME, TIMESTAMP} | |
private TemporalType type; | |
/** | |
* Return a new StringLiteralNode | |
*/ | |
public TemporalLiteralNode(TemporalType type) { | |
super(); | |
this.type = type; | |
} | |
/** | |
* Return a new StringLiteralNode with the internal string set to the | |
* passed value | |
*/ | |
public TemporalLiteralNode(String theString, TemporalType type) { | |
this(type); | |
setLiteral(theString); | |
} | |
/** | |
* INTERNAL | |
* Generate the a new EclipseLink ConstantExpression for this node. | |
*/ | |
public Expression generateExpression(GenerationContext context) { | |
DateConstantExpression whereClause = new DateConstantExpression(literal, context.getBaseExpression()); | |
return whereClause; | |
} | |
/** | |
* INTERNAL | |
* Validate node and calculate its type. | |
*/ | |
public void validate(ParseTreeContext context) { | |
TypeHelper typeHelper = context.getTypeHelper(); | |
if (type == TemporalType.DATE){ | |
setType(typeHelper.getSQLDateType()); | |
} else if (type == TemporalType.TIME) { | |
setType(typeHelper.getTimeType()); | |
} else if (type == TemporalType.TIMESTAMP){ | |
setType(typeHelper.getTimestampType()); | |
} | |
} | |
} |