001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.apache.hadoop.record.meta;
020    
021    import java.io.IOException;
022    
023    import org.apache.hadoop.classification.InterfaceAudience;
024    import org.apache.hadoop.classification.InterfaceStability;
025    import org.apache.hadoop.record.RecordOutput;
026    
027    /** 
028     * Represents typeID for vector. 
029     * @deprecated Replaced by <a href="http://hadoop.apache.org/avro/">Avro</a>.
030     */
031    @Deprecated
032    @InterfaceAudience.Public
033    @InterfaceStability.Stable
034    public class VectorTypeID extends TypeID {
035      private TypeID typeIDElement; 
036      
037      public VectorTypeID(TypeID typeIDElement) {
038        super(RIOType.VECTOR);
039        this.typeIDElement = typeIDElement;
040      }
041      
042      public TypeID getElementTypeID() {
043        return this.typeIDElement;
044      }
045      
046      void write(RecordOutput rout, String tag) throws IOException {
047        rout.writeByte(typeVal, tag);
048        typeIDElement.write(rout, tag);
049      }
050      
051      /**
052       * Two vector typeIDs are equal if their constituent elements have the 
053       * same type
054       */
055      public boolean equals(Object o) {
056        if (!super.equals (o))
057          return false;
058    
059        VectorTypeID vti = (VectorTypeID) o;
060        return this.typeIDElement.equals(vti.typeIDElement);
061      }
062      
063      /**
064       * We use a basic hashcode implementation, since this class will likely not
065       * be used as a hashmap key 
066       */
067      public int hashCode() {
068        return 37*17+typeIDElement.hashCode();
069      }
070      
071    }