/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* Licensed 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.seasar.framework.container.external.servlet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletRequest;
import org.seasar.framework.container.external.AbstractUnmodifiableExternalContextMap;
/**
* ServletRequestParameterに {@link Map}としてアクセスするためのクラスです。
*
* @author shot
* @author higa
*/
public class ServletRequestParameterMap extends
AbstractUnmodifiableExternalContextMap {
private static final String NULL = "null";
private final ServletRequest request;
private final Set parameterNames;
/**
* {@link ServletRequestParameterMap}を作成します。
*
* @param request
*/
public ServletRequestParameterMap(final ServletRequest request) {
this.request = request;
parameterNames = request.getParameterMap().keySet();
}
protected Object getAttribute(final String key) {
if (parameterNames.contains(key)) {
final String value = request.getParameter(key);
if (NULL.equals(value)) {
return "";
}
return value;
}
return null;
}
protected Iterator getAttributeNames() {
return parameterNames.iterator();
}
}