| /* |
| * 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.spark.tasks |
| |
| import java.io.IOException |
| |
| import scala.collection.mutable |
| |
| import org.apache.carbondata.core.cache.dictionary.{Dictionary, DictionaryColumnUniqueIdentifier} |
| import org.apache.carbondata.core.constants.CarbonCommonConstants |
| import org.apache.carbondata.core.metadata.{CarbonTableIdentifier, ColumnIdentifier} |
| import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema |
| import org.apache.carbondata.core.service.CarbonCommonFactory |
| import org.apache.carbondata.core.util.DataTypeUtil |
| import org.apache.carbondata.core.writer.CarbonDictionaryWriter |
| |
| /** |
| * |
| * @param valuesBuffer |
| * @param dictionary |
| * @param dictionaryColumnUniqueIdentifier |
| * @param columnSchema |
| * @param isDictionaryFileExist |
| * @param writer |
| */ |
| class DictionaryWriterTask(valuesBuffer: mutable.HashSet[String], |
| dictionary: Dictionary, |
| dictionaryColumnUniqueIdentifier: DictionaryColumnUniqueIdentifier, |
| columnSchema: ColumnSchema, |
| isDictionaryFileExist: Boolean, |
| var writer: CarbonDictionaryWriter = null) { |
| |
| /** |
| * execute the task |
| * |
| * @return distinctValueList and time taken to write |
| */ |
| def execute(): java.util.List[String] = { |
| val values = valuesBuffer.toArray |
| java.util.Arrays.sort(values, Ordering[String]) |
| val dictService = CarbonCommonFactory.getDictionaryService |
| writer = dictService.getDictionaryWriter(dictionaryColumnUniqueIdentifier) |
| val distinctValues: java.util.List[String] = new java.util.ArrayList() |
| |
| try { |
| if (!isDictionaryFileExist) { |
| writer.write(CarbonCommonConstants.MEMBER_DEFAULT_VAL) |
| distinctValues.add(CarbonCommonConstants.MEMBER_DEFAULT_VAL) |
| } |
| |
| if (values.length >= 1) { |
| if (isDictionaryFileExist) { |
| for (value <- values) { |
| val parsedValue = DataTypeUtil.normalizeColumnValueForItsDataType(value, |
| columnSchema) |
| if (null != parsedValue && dictionary.getSurrogateKey(parsedValue) == |
| CarbonCommonConstants.INVALID_SURROGATE_KEY) { |
| writer.write(parsedValue) |
| distinctValues.add(parsedValue) |
| } |
| } |
| |
| } else { |
| for (value <- values) { |
| val parsedValue = DataTypeUtil.normalizeColumnValueForItsDataType(value, |
| columnSchema) |
| if (null != parsedValue) { |
| writer.write(parsedValue) |
| distinctValues.add(parsedValue) |
| } |
| } |
| } |
| } |
| } catch { |
| case ex: IOException => |
| throw ex |
| } finally { |
| if (null != writer) { |
| writer.close() |
| } |
| } |
| distinctValues |
| } |
| |
| /** |
| * update dictionary metadata |
| */ |
| def updateMetaData() { |
| if (null != writer) { |
| writer.commit() |
| } |
| } |
| } |