javax.el.ELResolver Maven / Gradle / Ivy
/*
* 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 javax.el;
import java.text.MessageFormat;
import java.util.Iterator;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/**
* @author Jacob Hookom [jacob/hookom.net]
*
*/
public abstract class ELResolver {
static String message(ELContext context, String name, Object[] props) {
Locale locale = context.getLocale();
if (locale == null) {
locale = Locale.getDefault();
if (locale == null) {
return "";
}
}
ResourceBundle bundle = ResourceBundle.getBundle(
"javax.el.LocalStrings", locale);
try {
String template = bundle.getString(name);
if (props != null) {
template = MessageFormat.format(template, props);
}
return template;
} catch (MissingResourceException e) {
return "Missing Resource: '" + name + "' for Locale "
+ locale.getDisplayName();
}
}
public static final String RESOLVABLE_AT_DESIGN_TIME = "resolvableAtDesignTime";
public static final String TYPE = "type";
public abstract Object getValue(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException;
public abstract Class getType(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException;
public abstract void setValue(ELContext context, Object base, Object property, Object value) throws NullPointerException, PropertyNotFoundException, PropertyNotWritableException, ELException;
public abstract boolean isReadOnly(ELContext context, Object base, Object property) throws NullPointerException, PropertyNotFoundException, ELException;
public abstract Iterator getFeatureDescriptors(ELContext context, Object base);
public abstract Class getCommonPropertyType(ELContext context, Object base);
/**
* @since EL 2.2
*/
public Object invoke(@SuppressWarnings("unused") ELContext context,
@SuppressWarnings("unused") Object base,
@SuppressWarnings("unused") Object method,
@SuppressWarnings("unused") Class[] paramTypes,
@SuppressWarnings("unused") Object[] params) {
return null;
}
}