| /* |
| * 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.ignite.internal.processors.bulkload; |
| |
| import java.util.List; |
| import org.apache.ignite.IgniteCheckedException; |
| |
| /** |
| * Bulk load file format parser superclass + factory of known formats. |
| * |
| * <p>The parser processes a batch of input data and return a list of records. |
| * |
| * <p>The parser uses corresponding options from {@link BulkLoadFormat} subclass. |
| */ |
| public abstract class BulkLoadParser { |
| /** |
| * Parses a batch of input data and returns a list of records parsed |
| * (in most cases this is a list of strings). |
| * |
| * <p>Note that conversion between parsed and database table type is done by the other |
| * object (see {@link BulkLoadProcessor#dataConverter}) by the request processing code. |
| * This method is not obliged to do this conversion. |
| * |
| * @param batchData Data from the current batch. |
| * @param isLastBatch true if this is the last batch. |
| * @return The list of records. |
| * @throws IgniteCheckedException If any processing error occurs. |
| */ |
| protected abstract Iterable<List<Object>> parseBatch(byte[] batchData, boolean isLastBatch) |
| throws IgniteCheckedException; |
| |
| /** |
| * Creates a parser for a given format options. |
| * |
| * @param format The input format object. |
| * @return The parser. |
| * @throws IllegalArgumentException if the format is not known to the factory. |
| */ |
| public static BulkLoadParser createParser(BulkLoadFormat format) { |
| if (format instanceof BulkLoadCsvFormat) |
| return new BulkLoadCsvParser((BulkLoadCsvFormat)format); |
| |
| throw new IllegalArgumentException("Internal error: format is not defined"); |
| } |
| } |