Package org.apache.hadoop.hbase.thrift

Source Code of org.apache.hadoop.hbase.thrift.ThriftUtilities

/**
* 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.hadoop.hbase.thrift;

import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HColumnDescriptor.CompressionType;
import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor;
import org.apache.hadoop.hbase.thrift.generated.IllegalArgument;

public class ThriftUtilities {
 
  /**
   * This utility method creates a new Hbase HColumnDescriptor object based on a
   * Thrift ColumnDescriptor "struct".
   *
   * @param in
   *          Thrift ColumnDescriptor object
   * @return HColumnDescriptor
   * @throws IllegalArgument
   */
  static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
      throws IllegalArgument {
    CompressionType comp = CompressionType.valueOf(in.compression);
    boolean bloom = false;
    if (in.bloomFilterType.compareTo("NONE") != 0) {
      bloom = true;
    }
   
    if (in.name == null || in.name.length <= 0) {
      throw new IllegalArgument("column name is empty");
    }
    HColumnDescriptor col = new HColumnDescriptor(in.name,
        in.maxVersions, comp, in.inMemory, in.blockCacheEnabled,
        in.maxValueLength, in.timeToLive, bloom);
    return col;
  }
 
  /**
   * This utility method creates a new Thrift ColumnDescriptor "struct" based on
   * an Hbase HColumnDescriptor object.
   *
   * @param in
   *          Hbase HColumnDescriptor object
   * @return Thrift ColumnDescriptor
   */
  static public ColumnDescriptor colDescFromHbase(HColumnDescriptor in) {
    ColumnDescriptor col = new ColumnDescriptor();
    col.name = in.getName();
    col.maxVersions = in.getMaxVersions();
    col.compression = in.getCompression().toString();
    col.inMemory = in.isInMemory();
    col.blockCacheEnabled = in.isBlockCacheEnabled();
    col.maxValueLength = in.getMaxValueLength();
    col.bloomFilterType = Boolean.toString(in.isBloomfilter());
    return col;
  }
 
}
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