org.apache.tiles.ognl.ScopePropertyAccessor 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 org.apache.tiles.ognl;
import ognl.OgnlContext;
import ognl.PropertyAccessor;
import org.apache.tiles.request.Request;
import java.util.Map;
/**
* Accesses a scope.
*/
public class ScopePropertyAccessor implements PropertyAccessor {
/**
* The length of the scope suffix: "Scope".
*/
static final int SCOPE_SUFFIX_LENGTH = 5;
@Override
public Object getProperty(Map context, Object target, Object name) {
Request request = (Request) target;
String scope = (String) name;
if (scope.endsWith("Scope")) {
String scopeName = scope.substring(0, scope.length() - SCOPE_SUFFIX_LENGTH);
return request.getContext(scopeName);
}
return null;
}
@Override
public String getSourceAccessor(OgnlContext context, Object target, Object index) {
String scope = (String) index;
if (scope.endsWith("Scope")) {
String scopeName = scope.substring(0, scope.length() - SCOPE_SUFFIX_LENGTH);
return ".getContext(\"" + scopeName + "\")";
}
return null;
}
@Override
public String getSourceSetter(OgnlContext context, Object target, Object index) {
return null;
}
@Override
public void setProperty(Map context, Object target, Object name, Object value) {
// Does nothing.
}
}