InputRow.java

/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.data.input;

import java.util.List;

/**
 * An InputRow is the interface definition of an event being input into the data ingestion layer.
 *
 * An InputRow is a Row with a self-describing list of the dimensions available.  This list is used to
 * implement "schema-less" data ingestion that allows the system to add new dimensions as they appear.
 *
 */
public interface
    InputRow extends Row
{
  /**
   * Returns the dimensions that exist in this row.
   *
   * @return the dimensions that exist in this row.
   */
  public List<String> getDimensions();
}