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Common java code for Shindig

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/*
 * 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.shindig.common.servlet;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

/**
 * Maps parameters from a Servlet request into a map. This is used to control which
 * parameters are passed on to other parts of the container. Using this Adapter allows
 * e.g. to pass multiple parameters into the secure token generation methods.
 */
public interface ParameterFetcher {
    Map fetch(HttpServletRequest req);
}