Android Open Source - msf-spaces-sdk-android C D M Data_0_2

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License

The source code is released under:

Apache License

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Java Source Code

package de.imc.mirror.sdk.android.cdm;
/* ww w. j  ava  2s. co  m*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import org.jdom2.Element;

import de.imc.mirror.sdk.cdm.CDMElement;
import de.imc.mirror.sdk.android.CDMData;
import de.imc.mirror.sdk.android.exceptions.InvalidBuildException;

/**
 * Typed class for Common Data Models of version 0.2.
 * @author nmach, simon.schwantzer(at)im-c.de
 */
public class CDMData_0_2 extends CDMData implements de.imc.mirror.sdk.cdm.CDMData_0_2 {
  private static final long serialVersionUID = 2L;
  private final String creator;
  private final String ref;
  
  public CDMData_0_2(Element element){
    super(element);
    creator = element.getAttributeValue("creator");
    ref = element.getAttributeValue("ref");
  }

  public CDMData_0_2(Map<String, String> attributes, Map<String, CDMElement> elements) throws InvalidBuildException {
    super(attributes, elements);
    
    creator = attributes.get("creator");
    ref = attributes.get("ref");
  }
  
  /**
   * Verifies if the given element contains the attributes required for CDM version 0.2.
   * @param element XML element to verify.
   * @return List of errors. If the list is empty, the validation succeeded. 
   */
  public static List<String> verify(Element element) {
    List<String> errors = new ArrayList<String>();
    String id = element.getAttributeValue("id");
    if (id == null || id.trim().length() == 0){
      errors.add("Missing or empty attribute: id.");
    }
    String timestamp = element.getAttributeValue("timestamp");
    if (timestamp == null || timestamp.trim().length() == 0){
      errors.add("Missing or empty attribute: timestamp.");
    }
    return Collections.unmodifiableList(errors);
  }

  /**
   * Returns the publisher of the data object. 
   * This attribute is optional, but is verified by the service if set.
   * @return Full-JID of the data object publisher. 
   */
  @Override
  public String getCreator() {
    return creator;
  }

  /**
   * Returns the URI the object refers to, e.g., a the id of a parent object.
   * @return URI string if a object reference is set, otherwise <code>null</code>.
   */
  @Override
  public String getRef() {
    return ref;
  }
  
  @Override
  public void applyToElement(Element element){
    if (creator != null){
      element.setAttribute("creator", creator);
    }
    if (ref != null){
      element.setAttribute("ref", ref);
    }
  }
}

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