125 lines
3.9 KiB
Java
125 lines
3.9 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package javax.el;
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import java.beans.FeatureDescriptor;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.Iterator;
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import java.util.List;
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import java.util.MissingResourceException;
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import java.util.Objects;
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import java.util.ResourceBundle;
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public class ResourceBundleELResolver extends ELResolver {
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public ResourceBundleELResolver() {
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super();
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}
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@Override
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public Object getValue(ELContext context, Object base, Object property) {
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Objects.requireNonNull(context);
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if (base instanceof ResourceBundle) {
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context.setPropertyResolved(base, property);
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if (property != null) {
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try {
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return ((ResourceBundle) base).getObject(property
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.toString());
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} catch (MissingResourceException mre) {
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return "???" + property.toString() + "???";
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}
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}
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}
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return null;
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}
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@Override
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public Class<?> getType(ELContext context, Object base, Object property) {
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Objects.requireNonNull(context);
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if (base instanceof ResourceBundle) {
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context.setPropertyResolved(base, property);
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}
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return null;
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}
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@Override
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public void setValue(ELContext context, Object base, Object property,
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Object value) {
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Objects.requireNonNull(context);
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if (base instanceof ResourceBundle) {
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context.setPropertyResolved(base, property);
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throw new PropertyNotWritableException(Util.message(context,
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"resolverNotWriteable", base.getClass().getName()));
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}
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}
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@Override
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public boolean isReadOnly(ELContext context, Object base, Object property) {
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Objects.requireNonNull(context);
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if (base instanceof ResourceBundle) {
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context.setPropertyResolved(base, property);
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return true;
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}
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return false;
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}
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@Override
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public Iterator<FeatureDescriptor> getFeatureDescriptors(
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ELContext context, Object base) {
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if (base instanceof ResourceBundle) {
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List<FeatureDescriptor> feats = new ArrayList<>();
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Enumeration<String> e = ((ResourceBundle) base).getKeys();
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FeatureDescriptor feat;
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String key;
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while (e.hasMoreElements()) {
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key = e.nextElement();
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feat = new FeatureDescriptor();
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feat.setDisplayName(key);
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feat.setShortDescription("");
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feat.setExpert(false);
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feat.setHidden(false);
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feat.setName(key);
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feat.setPreferred(true);
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feat.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
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feat.setValue(TYPE, String.class);
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feats.add(feat);
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}
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return feats.iterator();
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}
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return null;
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}
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@Override
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public Class<?> getCommonPropertyType(ELContext context, Object base) {
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if (base instanceof ResourceBundle) {
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return String.class;
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}
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return null;
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}
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}
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