core/src/main/java/org/apache/accumulo/core/iterators/conf/PerColumnIteratorConfig.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.accumulo.core.iterators.conf;

import org.apache.hadoop.io.Text;

/**
 * @deprecated since 1.4
 *
 * @see org.apache.accumulo.core.client.IteratorSetting.Column
 * @see org.apache.accumulo.core.iterators.Combiner#setColumns(org.apache.accumulo.core.client.IteratorSetting, java.util.List)
 */
@Deprecated
public class PerColumnIteratorConfig {

  private String parameter;
  private Text colq;
  private Text colf;

  public PerColumnIteratorConfig(Text columnFamily, String parameter) {
    this.colf = columnFamily;
    this.colq = null;
    this.parameter = parameter;
  }

  public PerColumnIteratorConfig(Text columnFamily, Text columnQualifier, String parameter) {
    this.colf = columnFamily;
    this.colq = columnQualifier;
    this.parameter = parameter;
  }

  public Text getColumnFamily() {
    return colf;
  }

  public Text getColumnQualifier() {
    return colq;
  }

  public String encodeColumns() {
    return encodeColumns(this);
  }

  public String getClassName() {
    return parameter;
  }

  private static String encodeColumns(PerColumnIteratorConfig pcic) {
    return ColumnSet.encodeColumns(pcic.colf, pcic.colq);
  }

  public static String encodeColumns(Text columnFamily, Text columnQualifier) {
    return ColumnSet.encodeColumns(columnFamily, columnQualifier);
  }

  public static PerColumnIteratorConfig decodeColumns(String columns, String className) {
    String[] cols = columns.split(":");

    if (cols.length == 1) {
      return new PerColumnIteratorConfig(ColumnSet.decode(cols[0]), className);
    } else if (cols.length == 2) {
      return new PerColumnIteratorConfig(ColumnSet.decode(cols[0]), ColumnSet.decode(cols[1]), className);
    } else {
      throw new IllegalArgumentException(columns);
    }
  }
}