11612

Build # 11612

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<a href="https://github.com/apache/carbondata/commit/<a class=hub.com/apache/carbondata/commit/f161441384c0955515d8dd4903c223849e8c7216">f16144138<a href="https://github.com/apache/carbondata/commit/f161441384c0955515d8dd4903c223849e8c7216">">Merge </a><a class="double-link" href="https://github.com/apache/carbondata/commit/<a class="double-link" href="https://github.com/apache/carbondata/commit/61d18dbe0425467fd2fe2d5e2fa0ded1def384c1">61d18dbe0</a>">61d18dbe0</a><a href="https://github.com/apache/carbondata/commit/f161441384c0955515d8dd4903c223849e8c7216"> into 7541ef25f">7541ef25f</a>

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96.0

/core/src/main/java/org/apache/carbondata/core/datamap/dev/DataMapFactory.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.carbondata.core.datamap.dev;

import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.carbondata.common.exceptions.sql.MalformedDataMapCommandException;
import org.apache.carbondata.core.datamap.DataMapDistributable;
import org.apache.carbondata.core.datamap.DataMapLevel;
import org.apache.carbondata.core.datamap.DataMapMeta;
import org.apache.carbondata.core.datamap.Segment;
import org.apache.carbondata.core.datamap.dev.cgdatamap.CoarseGrainDataMap;
import org.apache.carbondata.core.datastore.block.SegmentProperties;
import org.apache.carbondata.core.features.TableOperation;
import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
import org.apache.carbondata.core.metadata.schema.table.DataMapSchema;
import org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn;
import org.apache.carbondata.events.Event;
import static org.apache.carbondata.core.constants.CarbonCommonConstants.INDEX_COLUMNS;

/**
 * Interface for datamap of index type, it is responsible for creating the datamap.
 */
public abstract class DataMapFactory<T extends DataMap> {

  private CarbonTable carbonTable;
  private DataMapSchema dataMapSchema;

  public DataMapFactory(CarbonTable carbonTable, DataMapSchema dataMapSchema) {
    this.carbonTable = carbonTable;
    this.dataMapSchema = dataMapSchema;
  }

  public CarbonTable getCarbonTable() {
    return carbonTable;
  }

  public void setCarbonTable(CarbonTable carbonTable) {
    this.carbonTable = carbonTable;
  }

  public DataMapSchema getDataMapSchema() {
    return dataMapSchema;
  }

  /**
   * Create a new write for this datamap, to write new data into the specified segment and shard
   */
  public abstract DataMapWriter createWriter(Segment segment, String shardName,
      SegmentProperties segmentProperties) throws IOException;
  /**
   * Create a new DataMapBuilder for this datamap, to rebuild the specified
   * segment and shard data in the main table.
   * TODO: refactor to unify with DataMapWriter
   */
  public abstract DataMapBuilder createBuilder(Segment segment, String shardName,
      SegmentProperties segmentProperties) throws IOException;

  /**
   * Get the datamap for all segments
   */
  public Map<Segment, List<CoarseGrainDataMap>> getDataMaps(List<Segment> segments)
      throws IOException {
    Map<Segment, List<CoarseGrainDataMap>> dataMaps = new HashMap<>();
    for (Segment segment : segments) {
      dataMaps.put(segment, (List<CoarseGrainDataMap>) this.getDataMaps(segment));
    }
    return dataMaps;
  }

  /**
   * Get the datamap for segmentId
   */
  public abstract List<T> getDataMaps(Segment segment) throws IOException;

  /**
   * Get datamaps for distributable object.
   */
  public abstract List<T> getDataMaps(DataMapDistributable distributable)
      throws IOException;

  /**
   * Get all distributable objects of a segmentId
   * @return
   */
  public abstract List<DataMapDistributable> toDistributable(Segment segment);

  /**
   *
   * @param event
   */
  public abstract void fireEvent(Event event);

  /**
   * Clear all datamaps for a segment from memory
   */
  public void clear(String segmentNo) {

  }

  /**
   * Clear all datamaps from memory
   */
  public abstract void clear();

  /**
   * Return metadata of this datamap
   */
  public abstract DataMapMeta getMeta();

  /**
   *  Type of datamap whether it is FG or CG
   */
  public abstract DataMapLevel getDataMapLevel();

  /**
   * delete datamap data in the specified segment
   */
  public abstract void deleteDatamapData(Segment segment) throws IOException;

  /**
   * delete datamap data if any
   */
  public abstract void deleteDatamapData();

  /**
   * delete datamap data if any
   */
  public void deleteSegmentDatamapData(String segmentNo) throws IOException {

  }

  /**
   * This function should return true is the input operation enum will make the datamap become stale
   */
  public abstract boolean willBecomeStale(TableOperation operation);

  /**
   * Validate INDEX_COLUMNS property and return a array containing index column name
   * Following will be validated
   * 1. require INDEX_COLUMNS property
   * 2. INDEX_COLUMNS can't contains illegal argument(empty, blank)
   * 3. INDEX_COLUMNS can't contains duplicate same columns
   * 4. INDEX_COLUMNS should be exists in table columns
   */
  public void validate() throws MalformedDataMapCommandException {
    List<CarbonColumn> indexColumns = carbonTable.getIndexedColumns(dataMapSchema);
    Set<String> unique = new HashSet<>();
    for (CarbonColumn indexColumn : indexColumns) {
      unique.add(indexColumn.getColName());
    }
    if (unique.size() != indexColumns.size()) {
      throw new MalformedDataMapCommandException(INDEX_COLUMNS + " has duplicate column");
    }
  }

  /**
   * whether to block operation on corresponding table or column.
   * For example, bloomfilter datamap will block changing datatype for bloomindex column.
   * By default it will not block any operation.
   *
   * @param operation table operation
   * @param targets objects which the operation impact on
   * @return true the operation will be blocked;false the operation will not be blocked
   */
  public boolean isOperationBlocked(TableOperation operation, Object... targets) {
    return false;
  }

  /**
   * whether this datamap support rebuild
   */
  public boolean supportRebuild() {
    return false;
  }
}

1	/*
2	* Licensed to the Apache Software Foundation (ASF) under one or more
3	* contributor license agreements. See the NOTICE file distributed with
4	* this work for additional information regarding copyright ownership.
5	* The ASF licenses this file to You under the Apache License, Version 2.0
6	* (the "License"); you may not use this file except in compliance with
7	* the License. You may obtain a copy of the License at
8	*
9	* http://www.apache.org/licenses/LICENSE-2.0
10	*
11	* Unless required by applicable law or agreed to in writing, software
12	* distributed under the License is distributed on an "AS IS" BASIS,
13	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14	* See the License for the specific language governing permissions and
15	* limitations under the License.
16	*/
17	package org.apache.carbondata.core.datamap.dev;
18
19	import java.io.IOException;
20	import java.util.HashMap;
21	import java.util.HashSet;
22	import java.util.List;
23	import java.util.Map;
24	import java.util.Set;
25
26	import org.apache.carbondata.common.exceptions.sql.MalformedDataMapCommandException;
27	import org.apache.carbondata.core.datamap.DataMapDistributable;
28	import org.apache.carbondata.core.datamap.DataMapLevel;
29	import org.apache.carbondata.core.datamap.DataMapMeta;
30	import org.apache.carbondata.core.datamap.Segment;
31	import org.apache.carbondata.core.datamap.dev.cgdatamap.CoarseGrainDataMap;
32	import org.apache.carbondata.core.datastore.block.SegmentProperties;
33	import org.apache.carbondata.core.features.TableOperation;
34	import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
35	import org.apache.carbondata.core.metadata.schema.table.DataMapSchema;
36	import org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn;
37	import org.apache.carbondata.events.Event;
38	import static org.apache.carbondata.core.constants.CarbonCommonConstants.INDEX_COLUMNS;
39
40	/**
41	* Interface for datamap of index type, it is responsible for creating the datamap.
42	*/
43	public abstract class DataMapFactory<T extends DataMap> {
44
45	private CarbonTable carbonTable;
46	private DataMapSchema dataMapSchema;
47
48	public DataMapFactory(CarbonTable carbonTable, DataMapSchema dataMapSchema) {	2✔
49	this.carbonTable = carbonTable;	2✔
50	this.dataMapSchema = dataMapSchema;	2✔
51	}	2✔
52
53	public CarbonTable getCarbonTable() {
54	return carbonTable;	2✔
55	}
56
57	public void setCarbonTable(CarbonTable carbonTable) {
58	this.carbonTable = carbonTable;	1✔
59	}	1✔
60
61	public DataMapSchema getDataMapSchema() {
62	return dataMapSchema;	1✔
63	}
64
65	/**
66	* Create a new write for this datamap, to write new data into the specified segment and shard
67	*/
68	public abstract DataMapWriter createWriter(Segment segment, String shardName,
69	SegmentProperties segmentProperties) throws IOException;
70	/**
71	* Create a new DataMapBuilder for this datamap, to rebuild the specified
72	* segment and shard data in the main table.
73	* TODO: refactor to unify with DataMapWriter
74	*/
75	public abstract DataMapBuilder createBuilder(Segment segment, String shardName,
76	SegmentProperties segmentProperties) throws IOException;
77
78	/**
79	* Get the datamap for all segments
80	*/
81	public Map<Segment, List<CoarseGrainDataMap>> getDataMaps(List<Segment> segments)
82	throws IOException {
83	Map<Segment, List<CoarseGrainDataMap>> dataMaps = new HashMap<>();	1✔
84	for (Segment segment : segments) {	1✔
85	dataMaps.put(segment, (List<CoarseGrainDataMap>) this.getDataMaps(segment));	1✔
86	}	1✔
87	return dataMaps;	1✔
88	}
89
90	/**
91	* Get the datamap for segmentId
92	*/
93	public abstract List<T> getDataMaps(Segment segment) throws IOException;
94
95	/**
96	* Get datamaps for distributable object.
97	*/
98	public abstract List<T> getDataMaps(DataMapDistributable distributable)
99	throws IOException;
100
101	/**
102	* Get all distributable objects of a segmentId
103	* @return
104	*/
105	public abstract List<DataMapDistributable> toDistributable(Segment segment);
106
107	/**
108	*
109	* @param event
110	*/
111	public abstract void fireEvent(Event event);
112
113	/**
114	* Clear all datamaps for a segment from memory
115	*/
116	public void clear(String segmentNo) {
117
118	}	1✔
119
120	/**
121	* Clear all datamaps from memory
122	*/
123	public abstract void clear();
124
125	/**
126	* Return metadata of this datamap
127	*/
128	public abstract DataMapMeta getMeta();
129
130	/**
131	* Type of datamap whether it is FG or CG
132	*/
133	public abstract DataMapLevel getDataMapLevel();
134
135	/**
136	* delete datamap data in the specified segment
137	*/
138	public abstract void deleteDatamapData(Segment segment) throws IOException;
139
140	/**
141	* delete datamap data if any
142	*/
143	public abstract void deleteDatamapData();
144
145	/**
146	* delete datamap data if any
147	*/
148	public void deleteSegmentDatamapData(String segmentNo) throws IOException {
149
150	}	×
151
152	/**
153	* This function should return true is the input operation enum will make the datamap become stale
154	*/
155	public abstract boolean willBecomeStale(TableOperation operation);
156
157	/**
158	* Validate INDEX_COLUMNS property and return a array containing index column name
159	* Following will be validated
160	* 1. require INDEX_COLUMNS property
161	* 2. INDEX_COLUMNS can't contains illegal argument(empty, blank)
162	* 3. INDEX_COLUMNS can't contains duplicate same columns
163	* 4. INDEX_COLUMNS should be exists in table columns
164	*/
165	public void validate() throws MalformedDataMapCommandException {
166	List<CarbonColumn> indexColumns = carbonTable.getIndexedColumns(dataMapSchema);	1✔
167	Set<String> unique = new HashSet<>();	1✔
168	for (CarbonColumn indexColumn : indexColumns) {	1✔
169	unique.add(indexColumn.getColName());	1✔
170	}	1✔
171	if (unique.size() != indexColumns.size()) {	1✔
172	throw new MalformedDataMapCommandException(INDEX_COLUMNS + " has duplicate column");	1✔
173	}
174	}	1✔
175
176	/**
177	* whether to block operation on corresponding table or column.
178	* For example, bloomfilter datamap will block changing datatype for bloomindex column.
179	* By default it will not block any operation.
180	*
181	* @param operation table operation
182	* @param targets objects which the operation impact on
183	* @return true the operation will be blocked;false the operation will not be blocked
184	*/
185	public boolean isOperationBlocked(TableOperation operation, Object... targets) {
186	return false;	1✔
187	}
188
189	/**
190	* whether this datamap support rebuild
191	*/
192	public boolean supportRebuild() {
193	return false;	1✔
194	}
195	}

apache / carbondata / 11612

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