How to use

alterCube

method

in

org.apache.lens.cube.metadata.CubeMetastoreClient

public <T extends Equals & HashCode & ToString> void updateEntity(String name, T entity)
 throws LensException, HiveException {
 if (entity instanceof XStorage) {
  alterStorage((XStorage) entity);
 } else if (entity instanceof XCube) {
  alterCube((XCube)entity);
 } else if (entity instanceof XDimension) {
  alterDimension((XDimension) entity);
 } else if (entity instanceof XFact) {
  alterCubeFactTable((XFact) entity);
 } else if (entity instanceof XDimensionTable) {
  alterCubeDimensionTable((XDimensionTable) entity);
 } else if (entity instanceof XSegmentation) {
  alterSegmentation((XSegmentation) entity);
 } else {
  throw new LensException("Unable to alter entity " + entity + " as it's unrecognizable: " + entity.getClass());
 }
}

/**
 * Update cube
 *
 * @param cube JAXB Cube object
 * @throws LensException
 */
@Override
public void updateCube(LensSessionHandle sessionid, XCube cube) throws LensException {
 try (SessionContext ignored = new SessionContext(sessionid)){
  getClient(sessionid).alterCube(cube);
  log.info("Cube updated " + cube.getName());
 } catch (HiveException e) {
  throw new LensException(e);
 }
}

public <T extends Equals & HashCode & ToString> void updateEntity(String name, T entity)
 throws LensException, HiveException {
 if (entity instanceof XStorage) {
  alterStorage((XStorage) entity);
 } else if  (entity instanceof XCube) {
  alterCube((XCube)entity);
 } else if (entity instanceof XDimension) {
  alterDimension((XDimension) entity);
 } else if (entity instanceof XFact) {
  alterCubeFactTable((XFact) entity);
 } else if (entity instanceof XDimensionTable) {
  alterCubeDimensionTable((XDimensionTable) entity);
 } else if (entity instanceof XSegmentation) {
  alterSegmentation((XSegmentation) entity);
 } else {
  throw new LensException("Unable to alter entity " + entity + " as it's unrecognizable: " + entity.getClass());
 }
}

public void alterCube(XCube cube) throws HiveException, LensException {
 Cube parent = cube instanceof XDerivedCube ? (Cube) getCube(
  ((XDerivedCube) cube).getParent()) : null;
 alterCube(cube.getName(), JAXBUtils.hiveCubeFromXCube(cube, parent));
}
/**

public void alterCube(XCube cube) throws HiveException, LensException {
 Cube parent = cube instanceof XDerivedCube ? (Cube) getCube(
  ((XDerivedCube) cube).getParent()) : null;
 alterCube(cube.getName(), JAXBUtils.hiveCubeFromXCube(cube, parent));
}

@Test(priority = 2)
public void testAlterDerivedCube() throws Exception {
 String name = "alter_derived_cube";
 client.createDerivedCube(CUBE_NAME, name, measures, dimensions, emptyHashMap, 0L);
 // Test alter cube
 Table cubeTbl = client.getHiveTable(name);
 DerivedCube toAlter = new DerivedCube(cubeTbl, (Cube) client.getCube(CUBE_NAME));
 toAlter.addMeasure("msr4");
 toAlter.removeMeasure("msr3");
 toAlter.addDimension("dim1StartTime");
 toAlter.removeDimension("dim1");
 assertNotNull(toAlter.getMeasureByName("msr4"));
 assertNotNull(toAlter.getMeasureByName("msr2"));
 assertNull(toAlter.getMeasureByName("msr3"));
 assertNotNull(toAlter.getDimAttributeByName("dim1StartTime"));
 assertNotNull(toAlter.getDimAttributeByName("dim2"));
 assertNull(toAlter.getDimAttributeByName("dim1"));
 client.alterCube(name, toAlter);
 DerivedCube altered = (DerivedCube) client.getCube(name);
 assertEquals(toAlter, altered);
 assertNotNull(altered.getMeasureByName("msr4"));
 CubeMeasure addedMsr = altered.getMeasureByName("msr4");
 assertEquals(addedMsr.getType(), "bigint");
 assertNotNull(altered.getDimAttributeByName("dim1StartTime"));
 BaseDimAttribute addedDim = (BaseDimAttribute) altered.getDimAttributeByName("dim1StartTime");
 assertEquals(addedDim.getType(), "string");
 assertNotNull(addedDim.getStartTime());
 client.dropCube(name);
 assertFalse(client.tableExists(name));
}

 client.alterCube(TEST_CUBE_NAME, cube);
  oneWeekBack, null, col.getCost(), null);
cube.alterDimension(newDim2);
client.alterCube(TEST_CUBE_NAME, cube);
String hql = rewrite(query, testConf);
assertNotNull(hql);

assertNull(toAlter.getDimAttributeByName("location2"));
client.alterCube(cubeName, toAlter);
client.alterCube(cubeName, toAlter);
altered = new Cube(Hive.get(conf).getTable(cubeName));
addedMsr = altered.getMeasureByName("testaddmsr1");