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| org.apache.jcs.auxiliary.lateral.LateralElementDescriptor |
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| 1 | package org.apache.jcs.auxiliary.lateral; |
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| 2 | ||
| 3 | /* |
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| 4 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 5 | * or more contributor license agreements. See the NOTICE file |
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| 6 | * distributed with this work for additional information |
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| 7 | * regarding copyright ownership. The ASF licenses this file |
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| 8 | * to you under the Apache License, Version 2.0 (the |
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| 9 | * "License"); you may not use this file except in compliance |
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| 10 | * with the License. You may obtain a copy of the License at |
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| 11 | * |
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 13 | * |
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| 14 | * Unless required by applicable law or agreed to in writing, |
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| 15 | * software distributed under the License is distributed on an |
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| 16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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| 17 | * KIND, either express or implied. See the License for the |
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| 18 | * specific language governing permissions and limitations |
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| 19 | * under the License. |
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| 20 | */ |
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| 21 | ||
| 22 | import java.io.Serializable; |
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| 23 | ||
| 24 | import org.apache.jcs.engine.behavior.ICacheElement; |
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| 25 | ||
| 26 | /** |
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| 27 | * This class wraps command to other laterals. It is essentially a |
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| 28 | * JCS-TCP-Lateral packet. The headers specify the action the receiver should |
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| 29 | * take. |
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| 30 | */ |
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| 31 | public class LateralElementDescriptor |
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| 32 | implements Serializable |
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| 33 | { |
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| 34 | private static final long serialVersionUID = 5268222498076063575L; |
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| 35 | ||
| 36 | /** The int for updates */ |
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| 37 | public final static int UPDATE = 1; |
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| 38 | ||
| 39 | /** The int for removes */ |
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| 40 | public final static int REMOVE = 2; |
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| 41 | ||
| 42 | /** The int instructing us to remove all */ |
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| 43 | public final static int REMOVEALL = 3; |
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| 44 | ||
| 45 | /** The int for disposing the cache. */ |
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| 46 | public final static int DISPOSE = 4; |
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| 47 | ||
| 48 | /** Command to return an object. */ |
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| 49 | public final static int GET = 5; |
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| 50 | ||
| 51 | /** The Cache Element that we are distributing. */ |
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| 52 | public ICacheElement ce; |
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| 53 | ||
| 54 | /** |
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| 55 | * The id of the the source of the request. This is used to prevent infinite |
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| 56 | * loops. |
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| 57 | */ |
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| 58 | public long requesterId; |
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| 59 | ||
| 60 | /** The operation has been requested by the client. */ |
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| 61 | 1419 | public int command = UPDATE; |
| 62 | ||
| 63 | /** |
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| 64 | * The hashcode value for this element. |
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| 65 | */ |
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| 66 | 1419 | public int valHashCode = -1; |
| 67 | ||
| 68 | /** Constructor for the LateralElementDescriptor object */ |
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| 69 | public LateralElementDescriptor() |
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| 70 | { |
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| 71 | 0 | super(); |
| 72 | 0 | } |
| 73 | ||
| 74 | /** |
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| 75 | * Constructor for the LateralElementDescriptor object |
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| 76 | * <p> |
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| 77 | * @param ce ICacheElement payload |
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| 78 | */ |
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| 79 | public LateralElementDescriptor( ICacheElement ce ) |
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| 80 | 1419 | { |
| 81 | 1419 | this.ce = ce; |
| 82 | 1419 | } |
| 83 | ||
| 84 | /** |
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| 85 | * @return String, all the important values that can be configured |
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| 86 | */ |
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| 87 | public String toString() |
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| 88 | { |
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| 89 | 0 | StringBuffer buf = new StringBuffer(); |
| 90 | 0 | buf.append( "\n LateralElementDescriptor " ); |
| 91 | 0 | buf.append( "\n command = [" + this.command + "]" ); |
| 92 | 0 | buf.append( "\n valHashCode = [" + this.valHashCode + "]" ); |
| 93 | 0 | buf.append( "\n ICacheElement = [" + this.ce + "]" ); |
| 94 | 0 | return buf.toString(); |
| 95 | } |
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| 96 | } |
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