| Clover coverage report - gsbase - 2.0.1 |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ProxyUtil.java | 80% | 86.7% | 75% | 82.8% |
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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.util; | |
| 39 | ||
| 40 | import java.lang.reflect.InvocationHandler; | |
| 41 | import java.lang.reflect.Method; | |
| 42 | import java.lang.reflect.Proxy; | |
| 43 | ||
| 44 | /** | |
| 45 | * A collection of utility methods dealing with proxy objects | |
| 46 | * | |
| 47 | * @version $Revision: 1.4 $ | |
| 48 | * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> | |
| 49 | */ | |
| 50 | public final class ProxyUtil { | |
| 51 | // Private constructor to prevent instantiation | |
| 52 | 0 | private ProxyUtil() { |
| 53 | } | |
| 54 | ||
| 55 | /** | |
| 56 | * Create a proxy object that implements the interface specified by 'clazz'. | |
| 57 | * All methods invoked on this object will return null. | |
| 58 | * | |
| 59 | * @param clazz The interface that the proxy will support | |
| 60 | * @return The new proxy object. | |
| 61 | */ | |
| 62 | 15 | public static Object createProxy( final Class clazz ) { |
| 63 | 15 | return createProxy( clazz, new Object[0][] ); |
| 64 | } | |
| 65 | ||
| 66 | ||
| 67 | /** | |
| 68 | * Create a proxy object that implements the interface specified by 'clazz'. | |
| 69 | * Any methods specified in args will return the given result, any methods | |
| 70 | * not specified here will return null. | |
| 71 | * <pre> | |
| 72 | * final Object args[][] = { | |
| 73 | * {"getAutoCommit", Boolean.TRUE}, | |
| 74 | * {"getCatalog", "foobar"} | |
| 75 | * }; | |
| 76 | * final Connection connection = ProxyUtil.createProxy(Connection.class, args); | |
| 77 | * </pre> | |
| 78 | * Calling getAutoCommit() on this object will return true. Calling getCatalog() | |
| 79 | * on this object will return "foobar". Calling any other method will return null. | |
| 80 | * | |
| 81 | * @param clazz The interface that will be supported by the generated proxy | |
| 82 | * @param args methodname/object pairs | |
| 83 | * @return The new proxy object | |
| 84 | */ | |
| 85 | 27 | public static Object createProxy( final Class clazz, final Object args[][] ) { |
| 86 | 27 | if( clazz == null ) { |
| 87 | 2 | throw new NullPointerException("clazz"); |
| 88 | } | |
| 89 | 25 | if( args == null ) { |
| 90 | 0 | throw new NullPointerException("args"); |
| 91 | } | |
| 92 | ||
| 93 | 25 | final InvocationHandler handler = new InvocationHandler() { |
| 94 | 28 | public Object invoke(Object proxy, Method method, Object[] methodArgs) { |
| 95 | 28 | final String methodName = method.getName(); |
| 96 | ||
| 97 | 28 | int i; |
| 98 | 28 | for( i=0; i<args.length; i++ ) { |
| 99 | 22 | if( methodName.equals(args[i][0]) ) { |
| 100 | 12 | return args[i][1]; |
| 101 | } | |
| 102 | } | |
| 103 | ||
| 104 | 16 | if( methodName.equals("toString") ) { |
| 105 | 0 | return "Proxy["+clazz.getName()+"]"; |
| 106 | } | |
| 107 | ||
| 108 | 16 | return null; |
| 109 | } | |
| 110 | }; | |
| 111 | 25 | return Proxy.newProxyInstance( |
| 112 | clazz.getClassLoader(), | |
| 113 | new Class[] { clazz }, | |
| 114 | handler); | |
| 115 | } | |
| 116 | } |
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