Package org.apache.clerezza.triaxrs.parameterinjectors

Source Code of org.apache.clerezza.triaxrs.parameterinjectors.ContextInjector

/*
* 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.clerezza.triaxrs.parameterinjectors;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Map;

import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.ext.Providers;

import org.apache.clerezza.triaxrs.WebRequest;
import org.apache.clerezza.triaxrs.headerDelegate.CookieHeaderDelegate;
import org.apache.clerezza.triaxrs.util.HttpHeadersImpl;
import org.apache.clerezza.triaxrs.util.UriInfoImpl;

/**
*
* @author reto
*/
public class ContextInjector implements ParameterInjector<Context> {

  final static CookieHeaderDelegate cookieProvider = new CookieHeaderDelegate();

  @SuppressWarnings("unchecked")
  @Override
  public <T> T getValue(WebRequest request, Map<String, String> pathParam, Providers providers,
      Type parameterType, Context annotation,
      boolean encodingDisabled, String defaultValue) throws UnsupportedFieldType {

    Class clazz;
    if (parameterType instanceof ParameterizedType) {
      clazz = (Class) ((ParameterizedType) parameterType).getRawType();
    } else if (parameterType instanceof Class) {
      clazz = (Class) parameterType;
    } else {
      throw new IllegalArgumentException("Can't handle type: " +
          parameterType + " having getClass(): " +
          parameterType.getClass());
    }

    if (clazz.isAssignableFrom(UriInfo.class)) {
      return (T) new UriInfoImpl(request);
    } else if (clazz.isAssignableFrom(WebRequest.class)) {
      //this also injects javax.ws.rs.core.Request
      return (T) request;
    } else if (clazz.isAssignableFrom(HttpHeaders.class)) {
      return (T) new HttpHeadersImpl(request);
    } else if (clazz.isAssignableFrom(SecurityContext.class)) {
      throw new UnsupportedOperationException("Not supported yet.");
    } else if (clazz.isAssignableFrom(Providers.class)) {
      return (T) providers;
    }
    return null;
  }
}
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