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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. 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.java.net/public/CDDL+GPL_1_1.html
* or packager/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 packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* If you wish your version of this file to be governed by only the CDDL or
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* elects to include this software in this distribution under the [CDDL or GPL
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* 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
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*/
package javax.faces.validator;
import java.beans.FeatureDescriptor;
import java.util.Iterator;
import java.util.Locale;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.ELResolver;
import javax.el.FunctionMapper;
import javax.el.ValueExpression;
import javax.el.VariableMapper;
import javax.faces.el.CompositeComponentExpressionHolder;
/**
* Analyzes a {@link ValueExpression} and provides access to the base object and property
* name to which the expression maps via the getReference() method.
*/
class ValueExpressionAnalyzer {
private ValueExpression expression;
public ValueExpressionAnalyzer(ValueExpression expression) {
this.expression = expression;
}
public ValueReference getReference(ELContext elContext) {
InterceptingResolver resolver = new InterceptingResolver(elContext.getELResolver());
try {
expression.setValue(decorateELContext(elContext, resolver), null);
} catch (ELException ele) {
return null;
}
ValueReference reference = resolver.getValueReference();
if (reference != null) {
Object base = reference.getBase();
if (base instanceof CompositeComponentExpressionHolder) {
ValueExpression ve = ((CompositeComponentExpressionHolder) base).getExpression(reference.getProperty());
if (ve != null) {
this.expression = ve;
reference = getReference(elContext);
}
}
}
return reference;
}
private ELContext decorateELContext(final ELContext context, final ELResolver resolver) {
return new ELContext() {
// punch in our new ELResolver
@Override
public ELResolver getELResolver() {
return resolver;
}
// The rest of the methods simply delegate to the existing context
@Override
public Object getContext(Class key) {
return context.getContext(key);
}
@Override
public Locale getLocale() {
return context.getLocale();
}
@Override
public boolean isPropertyResolved() {
return context.isPropertyResolved();
}
@Override
public void putContext(Class key, Object contextObject) {
context.putContext(key, contextObject);
}
@Override
public void setLocale(Locale locale) {
context.setLocale(locale);
}
@Override
public void setPropertyResolved(boolean resolved) {
context.setPropertyResolved(resolved);
}
@Override
public FunctionMapper getFunctionMapper() {
return context.getFunctionMapper();
}
@Override
public VariableMapper getVariableMapper() {
return context.getVariableMapper();
}
};
}
private static class InterceptingResolver extends ELResolver {
private ELResolver delegate;
private ValueReference valueReference;
public InterceptingResolver(ELResolver delegate) {
this.delegate = delegate;
}
public ValueReference getValueReference() {
return valueReference;
}
// Capture the base and property rather than write the value
@Override
public void setValue(ELContext context, Object base, Object property, Object value) {
if (base != null && property != null) {
context.setPropertyResolved(true);
valueReference = new ValueReference(base, property.toString());
}
}
// The rest of the methods simply delegate to the existing context
@Override
public Object getValue(ELContext context, Object base, Object property) {
return delegate.getValue(context, base, property);
}
@Override
public Class getType(ELContext context, Object base, Object property) {
return delegate.getType(context, base, property);
}
@Override
public boolean isReadOnly(ELContext context, Object base, Object property) {
return delegate.isReadOnly(context, base, property);
}
@Override
public Iterator getFeatureDescriptors(ELContext context, Object base) {
return delegate.getFeatureDescriptors(context, base);
}
@Override
public Class getCommonPropertyType(ELContext context, Object base) {
return delegate.getCommonPropertyType(context, base);
}
}
}