001/**
002 * Copyright 2011 Google Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *    http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.bitcoin.core;
018
019public class InventoryItem {
020    
021    /**
022     * 4 byte uint32 type field + 32 byte hash
023     */
024    static final int MESSAGE_LENGTH = 36;
025    
026    public enum Type {
027        Error,
028        Transaction,
029        Block,
030        FilteredBlock
031    }
032
033    public final Type type;
034    public final Sha256Hash hash;
035
036    public InventoryItem(Type type, Sha256Hash hash) {
037        this.type = type;
038        this.hash = hash;
039    }
040
041
042    public String toString() {
043        return type.toString() + ": " + hash;
044    }
045}