| /* |
| * 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.asterix.external.library; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.asterix.external.api.IRecordDataParser; |
| import org.apache.asterix.external.api.IRecordDataParserFactory; |
| import org.apache.asterix.external.classad.object.pool.ClassAdObjectPool; |
| import org.apache.asterix.external.util.ExternalDataConstants; |
| import org.apache.asterix.om.types.ARecordType; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| public class ClassAdParserFactory implements IRecordDataParserFactory<char[]> { |
| |
| private static final long serialVersionUID = 1L; |
| private static final List<String> parserFormats = Collections.unmodifiableList(Arrays.asList("line-separated")); |
| public static final String KEY_OLD_FORMAT = "old-format"; |
| public static final String KEY_EVALUATE = "evaluate"; |
| public static final String KEY_KEEP_EXPR = "keep-expr"; |
| public static final String KEY_EXPR_PREFIX = "expr-prefix"; |
| public static final String KEY_EXPR_SUFFIX = "expr-suffix"; |
| public static final String KEY_EXPR_NAME_SUFFIX = "expr-name-suffix"; |
| private ARecordType recordType; |
| private Map<String, String> configuration; |
| private boolean oldFormat = false; |
| private boolean evaluateExpr = false; |
| private boolean keepBoth = false; |
| private String exprPrefix; |
| private String exprSuffix; |
| private String exprFieldNameSuffix; |
| |
| private void writeObject(ObjectOutputStream stream) throws IOException { |
| stream.writeObject(recordType); |
| stream.writeObject(configuration); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException { |
| recordType = (ARecordType) stream.readObject(); |
| configuration = (Map<String, String>) stream.readObject(); |
| } |
| |
| @Override |
| public void configure(Map<String, String> configuration) { |
| this.configuration = configuration; |
| // is old format? |
| String parserConfig = configuration.get(KEY_OLD_FORMAT); |
| if ((parserConfig != null) && parserConfig.equalsIgnoreCase(ExternalDataConstants.TRUE)) { |
| oldFormat = true; |
| } |
| parserConfig = configuration.get(ExternalDataConstants.KEY_FORMAT); |
| if ((parserConfig != null) && parserConfig.equalsIgnoreCase(ExternalDataConstants.FORMAT_LINE_SEPARATED)) { |
| oldFormat = true; |
| } |
| if (!oldFormat) { |
| configuration.put(ExternalDataConstants.KEY_RECORD_START, "["); |
| configuration.put(ExternalDataConstants.KEY_RECORD_END, "]"); |
| } |
| |
| parserConfig = configuration.get(ClassAdParserFactory.KEY_EVALUATE); |
| if ((parserConfig != null) && parserConfig.equalsIgnoreCase(ExternalDataConstants.TRUE)) { |
| evaluateExpr = true; |
| } |
| parserConfig = configuration.get(ClassAdParserFactory.KEY_KEEP_EXPR); |
| if ((parserConfig != null) && parserConfig.equalsIgnoreCase(ExternalDataConstants.TRUE)) { |
| keepBoth = true; |
| } |
| |
| parserConfig = configuration.get(ClassAdParserFactory.KEY_EXPR_PREFIX); |
| if ((parserConfig != null) && (parserConfig.trim().length() > 0)) { |
| exprPrefix = parserConfig; |
| } |
| parserConfig = configuration.get(ClassAdParserFactory.KEY_EXPR_SUFFIX); |
| if ((parserConfig != null) && (parserConfig.trim().length() > 0)) { |
| exprSuffix = parserConfig; |
| } |
| |
| parserConfig = configuration.get(ClassAdParserFactory.KEY_EXPR_NAME_SUFFIX); |
| if ((parserConfig != null) && (parserConfig.trim().length() > 0)) { |
| exprFieldNameSuffix = parserConfig; |
| } |
| } |
| |
| @Override |
| public void setRecordType(ARecordType recordType) { |
| this.recordType = recordType; |
| } |
| |
| @Override |
| public IRecordDataParser<char[]> createRecordParser(IHyracksTaskContext ctx) throws HyracksDataException { |
| return new ClassAdParser(recordType, oldFormat, evaluateExpr, keepBoth, exprPrefix, exprSuffix, |
| exprFieldNameSuffix, new ClassAdObjectPool()); |
| } |
| |
| @Override |
| public Class<? extends char[]> getRecordClass() { |
| return char[].class; |
| } |
| |
| @Override |
| public void setMetaType(ARecordType metaType) { |
| } |
| |
| @Override |
| public List<String> getParserFormats() { |
| return parserFormats; |
| } |
| |
| } |