Java Code Examples for org.pentaho.metastore.api.IMetaStore#newElementType()

public static IMetaStoreElementType populateDatabaseElementType( IMetaStore metaStore ) throws MetaStoreException {

    // The new type will typically have an ID so all we need to do is give the type a name and a description.
    //
    IMetaStoreElementType elementType = metaStore.newElementType( PentahoDefaults.NAMESPACE );

    // Name and description...
    //
    elementType.setName( PentahoDefaults.DATABASE_CONNECTION_ELEMENT_TYPE_NAME );
    elementType.setDescription( PentahoDefaults.DATABASE_CONNECTION_ELEMENT_TYPE_DESCRIPTION );
    return elementType;
  }
 

public static IMetaStoreElementType getSharedDimensionElementType(IMetaStore metaStore) throws MetaStoreException {
  verifyNamespaceCreated(metaStore, namespace);

  IMetaStoreElementType elementType = metaStore.getElementTypeByName(namespace, METASTORE_SHARED_DIMENSION_TYPE_NAME);
  if (elementType==null) {
    // create the type
    //
    elementType = metaStore.newElementType(namespace);
    elementType.setName(METASTORE_SHARED_DIMENSION_TYPE_NAME);
    elementType.setDescription(METASTORE_SHARED_DIMENSION_TYPE_DESCRIPTION);
    metaStore.createElementType(namespace, elementType);
  }
  return elementType;
}
 

public static IMetaStoreElementType getLogicalModelElementType(IMetaStore metaStore) throws MetaStoreException {
  verifyNamespaceCreated(metaStore, PentahoDefaults.NAMESPACE);

  IMetaStoreElementType elementType = metaStore.getElementTypeByName(PentahoDefaults.NAMESPACE, METASTORE_STAR_MODEL_TYPE_NAME);
  if (elementType==null) {
    // create the type
    //
    elementType = metaStore.newElementType(PentahoDefaults.NAMESPACE);
    elementType.setName(METASTORE_STAR_MODEL_TYPE_NAME);
    elementType.setDescription(METASTORE_STAR_MODEL_TYPE_DESCRIPTION);
    metaStore.createElementType(PentahoDefaults.NAMESPACE, elementType);
  }
  return elementType;
}
 

public static IMetaStoreElementType getLogicalTableElementType(IMetaStore metaStore) throws MetaStoreException {
  verifyNamespaceCreated(metaStore, PentahoDefaults.NAMESPACE);

  IMetaStoreElementType elementType = metaStore.getElementTypeByName(PentahoDefaults.NAMESPACE, METASTORE_LOGICAL_TABLE_TYPE_NAME);
  if (elementType==null) {
    // create the type
    //
    elementType = metaStore.newElementType(PentahoDefaults.NAMESPACE);
    elementType.setName(METASTORE_LOGICAL_TABLE_TYPE_NAME);
    elementType.setDescription(METASTORE_LOGICAL_TABLE_TYPE_DESCRIPTION);
    metaStore.createElementType(PentahoDefaults.NAMESPACE, elementType);
  }
  return elementType;
}
 

public static IMetaStoreElementType createStarDomainElementType(IMetaStore metaStore) throws MetaStoreElementTypeExistsException, MetaStoreException {
  IMetaStoreElementType elementType = metaStore.newElementType(namespace);
  elementType.setName(METASTORE_STAR_DOMAIN_TYPE_NAME);
  elementType.setDescription(METASTORE_STAR_DOMAIN_TYPE_DESCRIPTION);
  metaStore.createElementType(namespace, elementType);

  return elementType;
}
 

@Test
public void testMetaStoreElementTypes() throws MetaStoreException {
  IMetaStore metaStore = repository.getMetaStore();
  assertNotNull( metaStore );
  String ns = PentahoDefaults.NAMESPACE;

  // We start with a clean slate...
  //
  assertEquals( 1, metaStore.getNamespaces().size() );
  assertEquals( true, metaStore.namespaceExists( ns ) );

  // Now create an element type
  //
  IMetaStoreElementType elementType = metaStore.newElementType( ns );
  elementType.setName( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_NAME );
  elementType.setDescription( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_DESCRIPTION );

  metaStore.createElementType( ns, elementType );

  IMetaStoreElementType verifyElementType = metaStore.getElementType( ns, elementType.getId() );
  assertEquals( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_NAME, verifyElementType.getName() );
  assertEquals( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_DESCRIPTION, verifyElementType.getDescription() );

  verifyElementType = metaStore.getElementTypeByName( ns, PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_NAME );
  assertEquals( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_NAME, verifyElementType.getName() );
  assertEquals( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_DESCRIPTION, verifyElementType.getDescription() );

  // Get the list of element type ids.
  //
  List<String> ids = metaStore.getElementTypeIds( ns );
  assertNotNull( ids );
  assertEquals( 1, ids.size() );
  assertEquals( elementType.getId(), ids.get( 0 ) );

  // Verify that we can't delete the namespace since it has content in it!
  //
  try {
    metaStore.deleteNamespace( ns );
    fail( "The namespace deletion didn't cause an exception because there are still an element type in it" );
  } catch ( MetaStoreDependenciesExistsException e ) {
    assertNotNull( e.getDependencies() );
    assertEquals( 1, e.getDependencies().size() );
    assertEquals( elementType.getId(), e.getDependencies().get( 0 ) );
  }

  metaStore.deleteElementType( ns, elementType );
  assertEquals( 0, metaStore.getElementTypes( ns ).size() );

  metaStore.deleteNamespace( ns );
}
 

@Test
public void testMetaStoreElements() throws MetaStoreException {
  // Set up a namespace
  //
  String ns = PentahoDefaults.NAMESPACE;
  IMetaStore metaStore = repository.getMetaStore();
  if ( !metaStore.namespaceExists( ns ) ) {
    metaStore.createNamespace( ns );
  }

  // And an element type
  //
  IMetaStoreElementType elementType = metaStore.newElementType( ns );
  elementType.setName( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_NAME );
  elementType.setDescription( PentahoDefaults.KETTLE_DATA_SERVICE_ELEMENT_TYPE_DESCRIPTION );
  metaStore.createElementType( ns, elementType );

  // Now we play with elements...
  //
  IMetaStoreElement oneElement = populateElement( metaStore, elementType, "Element One" );
  metaStore.createElement( ns, elementType, oneElement );

  IMetaStoreElement verifyOneElement = metaStore.getElement( ns, elementType, oneElement.getId() );
  assertNotNull( verifyOneElement );
  validateElement( verifyOneElement, "Element One" );

  assertEquals( 1, metaStore.getElements( ns, elementType ).size() );

  IMetaStoreElement twoElement = populateElement( metaStore, elementType, "Element Two" );
  metaStore.createElement( ns, elementType, twoElement );

  IMetaStoreElement verifyTwoElement = metaStore.getElement( ns, elementType, twoElement.getId() );
  assertNotNull( verifyTwoElement );

  assertEquals( 2, metaStore.getElements( ns, elementType ).size() );

  try {
    metaStore.deleteElementType( ns, elementType );
    fail( "Delete element type failed to properly detect element dependencies" );
  } catch ( MetaStoreDependenciesExistsException e ) {
    List<String> ids = e.getDependencies();
    assertEquals( 2, ids.size() );
    assertTrue( ids.contains( oneElement.getId() ) );
    assertTrue( ids.contains( twoElement.getId() ) );
  }

  metaStore.deleteElement( ns, elementType, oneElement.getId() );

  assertEquals( 1, metaStore.getElements( ns, elementType ).size() );

  metaStore.deleteElement( ns, elementType, twoElement.getId() );

  assertEquals( 0, metaStore.getElements( ns, elementType ).size() );
}