lens-storage-db/src/main/java/org/apache/lens/storage/db/DBStorage.java

/**
 * 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.lens.storage.db;

import java.util.List;
import java.util.Map;

import org.apache.lens.cube.metadata.Storage;
import org.apache.lens.cube.metadata.StoragePartitionDesc;

import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.metadata.Partition;
import org.apache.hadoop.hive.ql.metadata.Table;

/**
 * The Class DBStorage.
 */
public class DBStorage extends Storage {

  /**
   * The Constant DB_URL.
   */
  public static final String DB_URL = "lens.storage.db.url";

  /**
   * The db url.
   */
  private String dbUrl = null;

  /**
   * Instantiates a new DB storage.
   *
   * @param dbUrl      the db url
   * @param name       the name
   * @param properties the properties
   */
  protected DBStorage(String dbUrl, String name, Map<String, String> properties) {
    super(name, properties);
    this.dbUrl = dbUrl;
    addProperties();
  }

  /**
   * Instantiates a new DB storage.
   *
   * @param name the name
   */
  public DBStorage(String name) {
    this(name, null);
  }

  /**
   * Instantiates a new DB storage.
   *
   * @param name       the name
   * @param properties the properties
   */
  protected DBStorage(String name, Map<String, String> properties) {
    super(name, properties);
    if (properties != null) {
      this.dbUrl = properties.get(DB_URL);
    }
  }

  /**
   * Instantiates a new DB storage.
   *
   * @param hiveTable the hive table
   */
  public DBStorage(Table hiveTable) {
    super(hiveTable);
    this.dbUrl = getProperties().get(DB_URL);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.apache.lens.cube.metadata.Storage#addProperties()
   */
  protected void addProperties() {
    super.addProperties();
    if (dbUrl != null) {
      getProperties().put(DB_URL, dbUrl);
    }
  }

  public String getDbUrl() {
    return dbUrl;
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * org.apache.lens.cube.metadata.PartitionMetahook#commitAddPartition(org.apache.lens.cube.metadata
   * .StoragePartitionDesc)
   */
  @Override
  public void commitAddPartitions(List<StoragePartitionDesc> arg0) throws HiveException {

  }

  /*
   * (non-Javadoc)
   *
   * @see org.apache.lens.cube.metadata.PartitionMetahook#commitDropPartition(java.lang.String,
   * java.util.List)
   */
  @Override
  public void commitDropPartition(String arg0, List<String> arg1) throws HiveException {

  }

  /*
   * (non-Javadoc)
   *
   * @see
   * org.apache.lens.cube.metadata.PartitionMetahook#preAddPartition(org.apache.lens.cube.metadata
   * .StoragePartitionDesc)
   */
  @Override
  public void preAddPartitions(List<StoragePartitionDesc> arg0) throws HiveException {

  }

  /*
   * (non-Javadoc)
   *
   * @see org.apache.lens.cube.metadata.PartitionMetahook#preDropPartition(java.lang.String, java.util.List)
   */
  @Override
  public void preDropPartition(String arg0, List<String> arg1) throws HiveException {
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * org.apache.lens.cube.metadata.PartitionMetahook#rollbackAddPartitions(org.apache.lens.cube.metadata
   * .StoragePartitionDesc)
   */
  @Override
  public void rollbackAddPartitions(List<StoragePartitionDesc> arg0) throws HiveException {
  }

  @Override
  public void preUpdatePartition(List<Partition> partitions) throws HiveException {

  }

  @Override
  public void commitUpdatePartition(List<Partition> partitions) throws HiveException {

  }

  @Override
  public void rollbackUpdatePartition(List<Partition> partitions) throws HiveException {

  }

  /*
   * (non-Javadoc)
   *
   * @see org.apache.lens.cube.metadata.PartitionMetahook#rollbackDropPartition(java.lang.String,
   * java.util.List)
   */
  @Override
  public void rollbackDropPartition(String arg0, List<String> arg1) throws HiveException {
  }
}