| Clover coverage report - gsbase - 2.0.1 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| CondensedObjectOutputStream.java | 0% | 0% | 0% | 0% |
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| 1 | /* | |
| 2 | * Copyright (c) 1998, 2005 Gargoyle Software Inc. All rights reserved. | |
| 3 | * | |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted provided that the following conditions are met: | |
| 6 | * | |
| 7 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 8 | * this list of conditions and the following disclaimer. | |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 10 | * this list of conditions and the following disclaimer in the documentation | |
| 11 | * and/or other materials provided with the distribution. | |
| 12 | * 3. The end-user documentation included with the redistribution, if any, must | |
| 13 | * include the following acknowledgment: | |
| 14 | * | |
| 15 | * "This product includes software developed by Gargoyle Software Inc. | |
| 16 | * (http://www.GargoyleSoftware.com/)." | |
| 17 | * | |
| 18 | * Alternately, this acknowledgment may appear in the software itself, if | |
| 19 | * and wherever such third-party acknowledgments normally appear. | |
| 20 | * 4. The name "Gargoyle Software" must not be used to endorse or promote | |
| 21 | * products derived from this software without prior written permission. | |
| 22 | * For written permission, please contact info@GargoyleSoftware.com. | |
| 23 | * 5. Products derived from this software may not be called "GSBase", nor may | |
| 24 | * "GSBase" appear in their name, without prior written permission of | |
| 25 | * Gargoyle Software Inc. | |
| 26 | * | |
| 27 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, | |
| 28 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 29 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARGOYLE | |
| 30 | * SOFTWARE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 31 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 32 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
| 33 | * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
| 36 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 37 | */ | |
| 38 | package com.gargoylesoftware.base.io; | |
| 39 | ||
| 40 | import java.io.ObjectOutputStream; | |
| 41 | import java.io.OutputStream; | |
| 42 | import java.io.IOException; | |
| 43 | import java.util.List; | |
| 44 | import java.util.ArrayList; | |
| 45 | ||
| 46 | /** | |
| 47 | * A specialized subclass of ObjectOutputStream that is used to serialize | |
| 48 | * objects. This stream will remove duplicate objects from the stream in | |
| 49 | * order to shrink the resulting byte stream.<p> | |
| 50 | * | |
| 51 | * Only objects of the following types will be condensed: Character, Double, | |
| 52 | * Integer, Long, Short and String. The biggest benefit will come from | |
| 53 | * duplicate Strings. | |
| 54 | * | |
| 55 | * @version $Revision: 1.4 $ | |
| 56 | * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> | |
| 57 | */ | |
| 58 | public class CondensedObjectOutputStream extends ObjectOutputStream { | |
| 59 | ||
| 60 | /** | |
| 61 | * The list of classes that we can try condensing. Only classes that | |
| 62 | * are immutable should be in this list. | |
| 63 | */ | |
| 64 | private final String classNames_[] = { | |
| 65 | "java.lang.Character", | |
| 66 | "java.lang.Double", | |
| 67 | "java.lang.Integer", | |
| 68 | "java.lang.Long", | |
| 69 | "java.lang.Short", | |
| 70 | "java.lang.String", | |
| 71 | }; | |
| 72 | ||
| 73 | private final List classes_; | |
| 74 | private final List objects_ = new ArrayList(); | |
| 75 | ||
| 76 | /** | |
| 77 | * Create the stream | |
| 78 | * @param stream The output stream that we are wrapping | |
| 79 | * @throws IOException If the superclass throws an IOException in it's | |
| 80 | * constructor. | |
| 81 | */ | |
| 82 | 0 | public CondensedObjectOutputStream( final OutputStream stream ) throws IOException { |
| 83 | 0 | super(stream); |
| 84 | 0 | enableReplaceObject(true); |
| 85 | ||
| 86 | 0 | classes_ = new ArrayList( classNames_.length ); |
| 87 | 0 | int i; |
| 88 | 0 | for( i=0; i<classNames_.length; i++ ) { |
| 89 | 0 | try { |
| 90 | 0 | classes_.add( Class.forName(classNames_[i]) ); |
| 91 | } | |
| 92 | catch( final ClassNotFoundException e ) { | |
| 93 | // Theoretically impossible if the classNames list is set up correctly. | |
| 94 | 0 | throw new NoClassDefFoundError( classNames_[i] ); |
| 95 | } | |
| 96 | } | |
| 97 | ||
| 98 | } | |
| 99 | ||
| 100 | /** | |
| 101 | * Overrides the superclass to perform substitutions of duplicate | |
| 102 | * immutable objects. | |
| 103 | * | |
| 104 | * @param object The object to be serialized | |
| 105 | * @return Either the object that was passed in or an identical object | |
| 106 | * that had previously been passed in. | |
| 107 | */ | |
| 108 | 0 | protected Object replaceObject( final Object object ) { |
| 109 | ||
| 110 | 0 | Object rc = object; |
| 111 | ||
| 112 | 0 | if( object != null && classes_.contains( object.getClass() ) ) { |
| 113 | ||
| 114 | 0 | final int index = objects_.indexOf(object); |
| 115 | 0 | if( index == -1 ) { |
| 116 | 0 | objects_.add( object ); |
| 117 | } | |
| 118 | else { | |
| 119 | 0 | rc = objects_.get(index); |
| 120 | } | |
| 121 | } | |
| 122 | ||
| 123 | 0 | return rc; |
| 124 | } | |
| 125 | } | |
| 126 |
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