How to use

getAboutRepresentation

method

in

org.apache.stanbol.entityhub.servicesapi.util.ModelUtils

Representation data;
Representation metadata = null;
String entityId = ModelUtils.getAboutRepresentation(rep);
if(entityId != null){
  data = entityhubYard.getRepresentation(entityId);

/**
 * Checks if the parsed Entity can be wrapped as a locally managed entity.
 * This checks currently of a {@link ManagedEntityState} is defined by the
 * metadata.
 * @param entity the entity to check
 * @return the state
 */
public static boolean canWrap(Entity entity) {
  //check the metadata for
  //if the entity is managed locally
  //if the entity has an state
  Reference stateUri = entity.getMetadata().getFirstReference(STATE);
  if(stateUri == null ||
      !ManagedEntityState.isState(stateUri.getReference())){
    return false;
  }
  //check the about
  String entityId = ModelUtils.getAboutRepresentation(entity.getMetadata());
  if(entityId == null || !entityId.equals(entity.getRepresentation().getId())){
    return false;
  }
  return true;
}
/**

/**
 * Checks if the parsed Entity can be wrapped as a locally managed entity.
 * This checks currently of a {@link ManagedEntityState} is defined by the
 * metadata.
 * @param entity the entity to check
 * @return the state
 */
public static boolean canWrap(Entity entity) {
  //check the metadata for
  //if the entity is managed locally
  //if the entity has an state
  Reference stateUri = entity.getMetadata().getFirstReference(STATE);
  if(stateUri == null ||
      !ManagedEntityState.isState(stateUri.getReference())){
    return false;
  }
  //check the about
  String entityId = ModelUtils.getAboutRepresentation(entity.getMetadata());
  if(entityId == null || !entityId.equals(entity.getRepresentation().getId())){
    return false;
  }
  return true;
}
/**

Representation data;
Representation metadata = null;
String entityId = ModelUtils.getAboutRepresentation(rep);
if(entityId != null){
  data = entityhubYard.getRepresentation(entityId);

/**
 * Sets the parsed default state to the metadata if no other one is already
 * present and that wraps the entity as locally managed entity.
 * @param entity the entity
 * @param defaultState the default state used if no one is yet defined for
 * this entity
 * @return the wrapped entity
 */
public static ManagedEntity init(Entity entity, ManagedEntityState defaultState){
  Reference stateUri = entity.getMetadata().getFirstReference(STATE);
  if(stateUri == null ||
      !ManagedEntityState.isState(stateUri.getReference())){
    entity.getMetadata().setReference(STATE, defaultState.getUri());
  }
  String entityId = ModelUtils.getAboutRepresentation(entity.getMetadata());
  if(entityId == null){
    entity.getMetadata().setReference(
      RdfResourceEnum.aboutRepresentation.getUri(), 
      entity.getRepresentation().getId());
  } else if(!entityId.equals(entity.getRepresentation().getId())){
    //the metadata are about a different Entity ->
    throw new IllegalArgumentException(String.format(
      "The Metadata of the parsed Entity are not about the Entity ("+
      "entity: %s | metadataId: %s | metadataAbout: %s)",
      entity.getRepresentation().getId(),entity.getMetadata().getId(),
      entityId));
  }//else the ID value is OK
  return new ManagedEntity(entity,false);
}

/**
 * Sets the parsed default state to the metadata if no other one is already
 * present and that wraps the entity as locally managed entity.
 * @param entity the entity
 * @param defaultState the default state used if no one is yet defined for
 * this entity
 * @return the wrapped entity
 */
public static ManagedEntity init(Entity entity, ManagedEntityState defaultState){
  Reference stateUri = entity.getMetadata().getFirstReference(STATE);
  if(stateUri == null ||
      !ManagedEntityState.isState(stateUri.getReference())){
    entity.getMetadata().setReference(STATE, defaultState.getUri());
  }
  String entityId = ModelUtils.getAboutRepresentation(entity.getMetadata());
  if(entityId == null){
    entity.getMetadata().setReference(
      RdfResourceEnum.aboutRepresentation.getUri(), 
      entity.getRepresentation().getId());
  } else if(!entityId.equals(entity.getRepresentation().getId())){
    //the metadata are about a different Entity ->
    throw new IllegalArgumentException(String.format(
      "The Metadata of the parsed Entity are not about the Entity ("+
      "entity: %s | metadataId: %s | metadataAbout: %s)",
      entity.getRepresentation().getId(),entity.getMetadata().getId(),
      entityId));
  }//else the ID value is OK
  return new ManagedEntity(entity,false);
}