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/*
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html.
 *
 * This file is a derivative of code released under the terms listed below.
 *
 */
/*
 *
 * Copyright (c) 2009-2012,
 *
 *  Adam Fuchs          
 *  Avik Chaudhuri      
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The names of the contributors may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 *
 */

package org.scandroid.prefixtransfer.modeledAllocations;

import org.scandroid.prefixtransfer.InstanceKeySite;
import org.scandroid.prefixtransfer.PrefixVariable;

public class UriAppendString extends InstanceKeySite {

  final int uriInstanceID;
  final int stringInstanceID;
  final int instanceID;

  public UriAppendString(int instanceID, int uriInstanceID, int stringInstanceID) {
    this.uriInstanceID = uriInstanceID;
    this.stringInstanceID = stringInstanceID;
    this.instanceID = instanceID;
  }

  @Override
  public PrefixVariable propagate(PrefixVariable input) {
    //      System.out.println("Propagating at: " + instanceID + " (" + constantValue + ")");
    PrefixVariable retVal = new PrefixVariable();
    retVal.copyState(input);
    String prefix = input.getPrefix(uriInstanceID);
    if (input.fullPrefixKnown.contains(uriInstanceID)) {
      retVal.update(instanceID, prefix + '/' + input.getPrefix(stringInstanceID));
      if (input.fullPrefixKnown.contains(stringInstanceID)) retVal.include(instanceID);
    } else retVal.update(instanceID, prefix);
    return retVal;
  }

  @Override
  public String toString() {
    return ("UriAppendString(instanceID = "
        + instanceID
        + "; uriInstanceID = "
        + uriInstanceID
        + "; stringInstanceID = "
        + stringInstanceID
        + ')');
  }

  @Override
  public int instanceID() {
    return instanceID;
  }
}