/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.sling.scripting.jsp.jasper.el; import java.util.Iterator; import javax.el.ArrayELResolver; import javax.el.BeanELResolver; import javax.el.CompositeELResolver; import javax.el.ELContext; import javax.el.ELException; import javax.el.ELResolver; import javax.el.ListELResolver; import javax.el.MapELResolver; import javax.el.PropertyNotFoundException; import javax.el.PropertyNotWritableException; import javax.el.ResourceBundleELResolver; import javax.servlet.jsp.el.VariableResolver; public final class ELResolverImpl extends ELResolver { public final static ELResolver DefaultResolver = new CompositeELResolver(); static { ((CompositeELResolver) DefaultResolver).add(new MapELResolver()); ((CompositeELResolver) DefaultResolver).add(new ResourceBundleELResolver()); ((CompositeELResolver) DefaultResolver).add(new ListELResolver()); ((CompositeELResolver) DefaultResolver).add(new ArrayELResolver()); ((CompositeELResolver) DefaultResolver).add(new BeanELResolver()); } private final VariableResolver variableResolver; public ELResolverImpl(VariableResolver variableResolver) { this.variableResolver = variableResolver; } public Object getValue(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException { if (context == null) { throw new NullPointerException(); } if (base == null) { context.setPropertyResolved(true); if (property != null) { try { return this.variableResolver.resolveVariable(property .toString()); } catch (javax.servlet.jsp.el.ELException e) { throw new ELException(e.getMessage(), e.getCause()); } } } if (!context.isPropertyResolved()) { return DefaultResolver.getValue(context, base, property); } return null; } public Class<?> getType(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException { if (context == null) { throw new NullPointerException(); } if (base == null) { context.setPropertyResolved(true); if (property != null) { try { Object obj = this.variableResolver.resolveVariable(property .toString()); return (obj != null) ? obj.getClass() : null; } catch (javax.servlet.jsp.el.ELException e) { throw new ELException(e.getMessage(), e.getCause()); } } } if (!context.isPropertyResolved()) { return DefaultResolver.getType(context, base, property); } return null; } public void setValue(ELContext context, Object base, Object property, Object value) throws NullPointerException, PropertyNotFoundException, PropertyNotWritableException, ELException { if (context == null) { throw new NullPointerException(); } if (base == null) { context.setPropertyResolved(true); throw new PropertyNotWritableException( "Legacy VariableResolver wrapped, not writable"); } if (!context.isPropertyResolved()) { DefaultResolver.setValue(context, base, property, value); } } public boolean isReadOnly(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException { if (context == null) { throw new NullPointerException(); } if (base == null) { context.setPropertyResolved(true); return true; } return DefaultResolver.isReadOnly(context, base, property); } public Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) { return DefaultResolver.getFeatureDescriptors(context, base); } public Class<?> getCommonPropertyType(ELContext context, Object base) { if (base == null) { return String.class; } return DefaultResolver.getCommonPropertyType(context, base); } }