| /* |
| * 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.data; |
| |
| import java.util.Iterator; |
| |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.impl.util.TupleFormat; |
| |
| import com.google.common.base.Joiner; |
| |
| /** |
| * This class provides a convenient base for Tuple implementations. This makes it easier |
| * to provide default implementations as the Tuple interface is evolved. |
| */ |
| public abstract class AbstractTuple implements Tuple { |
| @Override |
| public Iterator<Object> iterator() { |
| return getAll().iterator(); |
| } |
| |
| @Override |
| public String toString() { |
| return TupleFormat.format(this); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toDelimitedString(String delim) throws ExecException { |
| return Joiner.on(delim).useForNull("").join(this); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public byte getType(int fieldNum) throws ExecException { |
| return DataType.findType(get(fieldNum)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean isNull(int fieldNum) throws ExecException { |
| return (get(fieldNum) == null); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| return (compareTo(other) == 0); |
| } |
| |
| @Override |
| public void reference(Tuple t) { |
| throw new RuntimeException("Tuple#reference(Tuple) is deprecated and should not be used"); |
| } |
| } |