| /* |
| * 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.writer; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * dictionary writer interface |
| */ |
| public interface CarbonDictionaryWriter extends Closeable { |
| /** |
| * write method that accepts one value at a time |
| * This method can be used when data is huge and memory is les. In that |
| * case data can be stored to a file and an iterator can iterate over it and |
| * pass one value at a time |
| * |
| * @param value unique dictionary value |
| * @throws IOException if an I/O error occurs |
| */ |
| void write(String value) throws IOException; |
| |
| /** |
| * write method that accepts list of byte arrays as value |
| * This can be used when data is less, then string can be converted |
| * to byte array for each value and added to a list |
| * |
| * @param valueList list of byte array. Each byte array is unique dictionary value |
| * @throws IOException if an I/O error occurs |
| */ |
| void write(List<byte[]> valueList) throws IOException; |
| |
| void commit() throws IOException; |
| } |