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This is the master POM file for Sun's Implementation of
the JSF 1.2 Specification.
/*
* $Id: MethodExpressionValidator.java,v 1.7 2007/04/27 22:00:11 ofung Exp $
*/
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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
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*/
package javax.faces.validator;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.MethodExpression;
import javax.faces.application.FacesMessage;
import javax.faces.component.StateHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
/**
* MethodExpressionValidator is a {@link Validator} that
* wraps a {@link MethodExpression}, and it performs validation by executing
* a method on an object identified by the {@link MethodExpression}.
*/
public class MethodExpressionValidator implements Validator, StateHolder {
// ------------------------------------------------------ Instance Variables
private MethodExpression methodExpression = null;
public MethodExpressionValidator() {
super();
}
/**
* Construct a {@link Validator} that contains a {@link MethodExpression}.
*/
public MethodExpressionValidator(MethodExpression methodExpression) {
super();
this.methodExpression = methodExpression;
}
// ------------------------------------------------------- Validator Methods
/**
* @throws NullPointerException {@inheritDoc}
* @throws ValidatorException {@inheritDoc}
*/
public void validate(FacesContext context,
UIComponent component,
Object value) throws ValidatorException {
if ((context == null) || (component == null)) {
throw new NullPointerException();
}
if (value != null) {
try {
ELContext elContext = context.getELContext();
methodExpression.invoke(elContext, new Object[]{context, component, value});
} catch (ELException ee) {
Throwable e = ee.getCause();
if (e instanceof ValidatorException) {
throw (ValidatorException) e;
}
String errInfo = ee.getMessage();
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
errInfo,
errInfo);
throw new ValidatorException(message, ee.getCause());
}
}
}
// ----------------------------------------------------- StateHolder Methods
public Object saveState(FacesContext context) {
Object values[] = new Object[1];
values[0] = methodExpression;
return (values);
}
public void restoreState(FacesContext context, Object state) {
Object values[] = (Object[]) state;
methodExpression = (MethodExpression) values[0];
}
private boolean transientValue = false;
public boolean isTransient() {
return (this.transientValue);
}
public void setTransient(boolean transientValue) {
this.transientValue = transientValue;
}
}