| /* |
| * 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.processing.loading.parser.impl; |
| |
| import java.util.regex.Pattern; |
| |
| import org.apache.carbondata.core.util.CarbonUtil; |
| import org.apache.carbondata.processing.loading.complexobjects.ArrayObject; |
| import org.apache.carbondata.processing.loading.parser.ComplexParser; |
| import org.apache.carbondata.processing.loading.parser.GenericParser; |
| |
| import org.apache.commons.lang.ArrayUtils; |
| |
| /** |
| * It parses the string to @{@link ArrayObject} using delimiter. |
| * It is thread safe as the state of class don't change while |
| * calling @{@link GenericParser#parse(Object)} method |
| */ |
| public class ArrayParserImpl implements ComplexParser<ArrayObject> { |
| |
| protected Pattern pattern; |
| |
| protected GenericParser child; |
| |
| protected String nullFormat; |
| |
| public ArrayParserImpl(String delimiter, String nullFormat) { |
| pattern = Pattern.compile(CarbonUtil.delimiterConverter(delimiter)); |
| this.nullFormat = nullFormat; |
| } |
| |
| @Override |
| public ArrayObject parse(Object data) { |
| if (data != null) { |
| String value = data.toString(); |
| if (!value.isEmpty() && !value.equals(nullFormat)) { |
| String[] split = pattern.split(value, -1); |
| if (ArrayUtils.isNotEmpty(split)) { |
| Object[] array = new Object[split.length]; |
| for (int i = 0; i < split.length; i++) { |
| array[i] = child.parse(split[i]); |
| } |
| return new ArrayObject(array); |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void addChildren(GenericParser parser) { |
| child = parser; |
| } |
| } |