Package org.olat.core.util.resource

Source Code of org.olat.core.util.resource.OLATResourceableEvent

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) 1999-2006 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/

package org.olat.core.util.resource;

import java.util.Iterator;
import java.util.List;

import org.olat.core.id.OLATResourceable;
import org.olat.core.logging.AssertException;
import org.olat.core.util.event.MultiUserEvent;


/**
*  Description:<br>
*  event from an olatresourceable.
*  Important: in order to be serializable, only the flat form of the OLATResoureable is taken (a String), and a method is offered to test on
*  contains and equals.
*
* @author Felix Jost
*/
public abstract class OLATResourceableEvent extends MultiUserEvent {
 
  /**
   *
   */
  private static final long serialVersionUID = -5015369009092731312L;
 
 
  private String derivedOres;
  private Long oresId;
  private String oresType;

  /**
   * Event from an olatresourceable.
   * @param command
   * @param ores
   */
  public OLATResourceableEvent(String command, OLATResourceable ores) {
    super(command);
    this.derivedOres = OresHelper.createStringRepresenting(ores);
    this.oresId = ores.getResourceableId();
    this.oresType = ores.getResourceableTypeName();
  }
 
  /**
   * @param olatResourceables
   * @return True if target is contained list.
   */
  public boolean targetContainedIn(List olatResourceables) {
    boolean found = false;
    for (Iterator it_ores = olatResourceables.iterator(); it_ores.hasNext();) {
      OLATResourceable aor = (OLATResourceable) it_ores.next();
      String derived = OresHelper.createStringRepresenting(aor);
      if (derived.equals(derivedOres)) {
        found = true;
        break;
      }
    }
    return found;
  }

  /**
   * @param ores
   * @return True on equyality.
   */
  public boolean targetEquals(OLATResourceable ores) {
    return targetEquals(ores, false);
  }

  /**
   *
   * @param ores the OLATResourceable to test against.
   * @param exceptIfFalse if true = throw an exception if the target does not match ores
   * @return True on equality.
   */
  public boolean targetEquals(OLATResourceable ores, boolean exceptIfFalse) {
    String derived = OresHelper.createStringRepresenting(ores);
    boolean res = derived.equals(derivedOres);
    if (!res && exceptIfFalse) throw new AssertException("expected ores to be the same as target, but failed: ores ="+
        ores.getResourceableTypeName()+" / "+ores.getResourceableId()+", but event was for "+derived);
    return res;
  }
 
 

  /**
   * @return derived olatresourceable
   */
  public String getDerivedOres() {
    return derivedOres;
  }

  /**
   * @return Returns the oresId.
   */
  public Long getOresId() {
    return oresId;
  }

  /**
   * @return Returns the oresType.
   */
  public String getOresType() {
    return oresType;
  }
}
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