| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| package org.apache.impala.catalog; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.impala.thrift.TCatalogObject; |
| |
| abstract public class CatalogObjectImpl implements CatalogObject { |
| // Current catalog version of this object. Initialized to |
| // Catalog.INITIAL_CATALOG_VERSION. |
| private AtomicLong catalogVersion_ = new AtomicLong(Catalog.INITIAL_CATALOG_VERSION); |
| |
| protected CatalogObjectImpl() {} |
| |
| @Override |
| public long getCatalogVersion() { return catalogVersion_.get(); } |
| |
| @Override |
| public void setCatalogVersion(long newVersion) { catalogVersion_.set(newVersion); } |
| |
| @Override |
| public boolean isLoaded() { return true; } |
| |
| @Override |
| public String getName() { return ""; } |
| |
| @Override |
| public String getUniqueName() { |
| return Catalog.toCatalogObjectKey(toTCatalogObject()); |
| } |
| |
| public final TCatalogObject toTCatalogObject() { |
| TCatalogObject catalogObject = |
| new TCatalogObject(getCatalogObjectType(), getCatalogVersion()); |
| setTCatalogObject(catalogObject); |
| return catalogObject; |
| } |
| |
| /** |
| * A template method used by {@link CatalogObjectImpl#toTCatalogObject()} for |
| * populating the given catalogObject fields. |
| */ |
| protected abstract void setTCatalogObject(TCatalogObject catalogObject); |
| } |
| |