| /* |
| * 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.pig.impl.util; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.pig.data.DataType; |
| |
| public class NumValCarrier { |
| private Map<Byte,ValCarrier> byteToStr = new HashMap<Byte,ValCarrier>(10); |
| |
| public NumValCarrier() { |
| ValCarrier valCarrier = new ValCarrier("val"); |
| ValCarrier bagCarrier = new ValCarrier("bag"); |
| ValCarrier tupleCarrier = new ValCarrier("tuple"); |
| ValCarrier mapCarrier = new ValCarrier("map"); |
| ValCarrier nullCarrier = new ValCarrier("null"); |
| |
| byteToStr.put(DataType.BAG,bagCarrier); |
| byteToStr.put(DataType.CHARARRAY,valCarrier); |
| byteToStr.put(DataType.BYTEARRAY,valCarrier); |
| byteToStr.put(DataType.DOUBLE,valCarrier); |
| byteToStr.put(DataType.FLOAT,valCarrier); |
| byteToStr.put(DataType.INTEGER,valCarrier); |
| byteToStr.put(DataType.LONG,valCarrier); |
| byteToStr.put(DataType.BOOLEAN,valCarrier); |
| byteToStr.put(DataType.DATETIME,valCarrier); |
| byteToStr.put(DataType.MAP,mapCarrier); |
| byteToStr.put(DataType.TUPLE,tupleCarrier); |
| byteToStr.put(DataType.NULL,nullCarrier); |
| byteToStr.put(DataType.BIGINTEGER,valCarrier); |
| byteToStr.put(DataType.BIGDECIMAL,valCarrier); |
| } |
| |
| public String makeNameFromDataType(byte type) { |
| return byteToStr.get(type).getNextString(); |
| } |
| |
| private static class ValCarrier { |
| private int num=0; |
| private String str; |
| |
| public ValCarrier(String str) { |
| this.str=str; |
| } |
| |
| public String getNextString() { |
| return str+"_"+num++; |
| } |
| } |
| } |