oracle.toplink.essentials.internal.parsing.ModNode Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* // Copyright (c) 1998, 2007, Oracle. All rights reserved.
*
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package oracle.toplink.essentials.internal.parsing;
/**
* INTERNAL
* Purpose: Represent a MOD
*
Responsibilities:
* - Answer the correct expression for a MOD
*
- Maintain the parts of a MOD statement
*
* e.g.
* SELECT ... FROM ... WHERE MOD(emp.salary, 2) > 1000
*
* @author Jon Driscoll and Joel Lucuik
* @since TopLink 4.0
*/
import oracle.toplink.essentials.expressions.*;
import oracle.toplink.essentials.exceptions.EJBQLException;
public class ModNode extends ArithmeticFunctionNode {
private Node denominator = null;
/**
* INTERNAL
* Check the child nodes for an unqualified field access and if so,
* replace it by a qualified field access.
*/
public Node qualifyAttributeAccess(ParseTreeContext context) {
if (left != null) {
left = left.qualifyAttributeAccess(context);
}
if (denominator != null) {
denominator = denominator.qualifyAttributeAccess(context);
}
return this;
}
/**
* INTERNAL
* Validate node and calculate its type.
*/
public void validate(ParseTreeContext context) {
TypeHelper typeHelper = context.getTypeHelper();
if (left != null) {
left.validate(context);
left.validateParameter(context, typeHelper.getIntType());
Object type = left.getType();
if (!typeHelper.isIntegralType(type))
throw EJBQLException.invalidFunctionArgument(
context.getQueryInfo(), left.getLine(), left.getColumn(),
"MOD", left.getAsString(), "integral type");
}
if (denominator != null) {
denominator.validate(context);
denominator.validateParameter(context, typeHelper.getIntType());
Object denominatorType = denominator.getType();
if (!typeHelper.isIntegralType(denominatorType))
throw EJBQLException.invalidFunctionArgument(
context.getQueryInfo(), denominator.getLine(), denominator.getColumn(),
"MOD", denominator.getAsString(), "integral type");
}
setType(typeHelper.getIntType());
}
/** */
public Expression generateExpression(GenerationContext context) {
return ExpressionMath.mod(getLeft().generateExpression(context),
getDenominator().generateExpression(context));
}
// Accessors
public Node getDenominator() {
return denominator;
}
public void setDenominator(Node denominator) {
this.denominator = denominator;
}
}