Package org.apache.wicket.request.target.coding

Source Code of org.apache.wicket.request.target.coding.SharedResourceRequestTargetUrlCodingStrategy

/*
* 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.wicket.request.target.coding;

import org.apache.wicket.IRequestHandler;
import org.apache.wicket.request.ObsoleteRequestParameters;
import org.apache.wicket.request.target.resource.ISharedResourceRequestTarget;
import org.apache.wicket.request.target.resource.SharedResourceRequestTarget;
import org.apache.wicket.util.string.AppendingStringBuffer;
import org.apache.wicket.util.value.ValueMap;

/**
* Encodes and decodes mounts for a single resource class.
*
* @author Gili Tzabari
*/
public class SharedResourceRequestTargetUrlCodingStrategy extends
  AbstractRequestTargetUrlCodingStrategy
{
  private final String resourceKey;


  /**
   * Construct.
   *
   * @param mountPath
   * @param resourceKey
   */
  public SharedResourceRequestTargetUrlCodingStrategy(final String mountPath,
    final String resourceKey)
  {
    super(mountPath);
    this.resourceKey = resourceKey;
  }

  /**
   * @see org.apache.wicket.request.target.coding.IRequestTargetUrlCodingStrategy#decode(org.apache.wicket.request.ObsoleteRequestParameters)
   */
  public IRequestHandler decode(ObsoleteRequestParameters requestParameters)
  {
    final String parametersFragment = requestParameters.getPath().substring(
      getMountPath().length());
    final ValueMap parameters = decodeParameters(parametersFragment,
      requestParameters.getParameters());

    requestParameters.setParameters(parameters);
    requestParameters.setResourceKey(resourceKey);
    return new SharedResourceRequestTarget(requestParameters);
  }

  /**
   * @see org.apache.wicket.request.target.coding.IRequestTargetUrlCodingStrategy#encode(org.apache.wicket.IRequestHandler)
   */
  public CharSequence encode(IRequestHandler requestTarget)
  {
    if (!(requestTarget instanceof ISharedResourceRequestTarget))
    {
      throw new IllegalArgumentException("This encoder can only be used with " +
        "instances of " + ISharedResourceRequestTarget.class.getName());
    }
    final AppendingStringBuffer url = new AppendingStringBuffer(40);
    url.append(getMountPath());
    final ISharedResourceRequestTarget target = (ISharedResourceRequestTarget)requestTarget;

    ObsoleteRequestParameters requestParameters = target.getRequestParameters();
    appendParameters(url, requestParameters.getParameters());
    return url;
  }

  /**
   * @see org.apache.wicket.request.target.coding.IRequestTargetUrlCodingStrategy#matches(org.apache.wicket.IRequestHandler)
   */
  public boolean matches(IRequestHandler requestTarget)
  {
    if (requestTarget instanceof ISharedResourceRequestTarget)
    {
      ISharedResourceRequestTarget target = (ISharedResourceRequestTarget)requestTarget;
      return target.getRequestParameters().getResourceKey().equals(resourceKey);
    }
    else
    {
      return false;
    }
  }

  /**
   * @see java.lang.Object#toString()
   */
  @Override
  public String toString()
  {
    return "SharedResourceEncoder[key=" + resourceKey + "]";
  }
}
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