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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
MetaClassIntrospector.java | 100% | 100% | 100% | 100% |
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/*
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* Copyright (C) The MetaClass Group. All rights reserved.
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*
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* This software is published under the terms of the Spice
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* Software License version 1.1, a copy of which has been included
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* with this distribution in the LICENSE.txt file.
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*/
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package org.codehaus.metaclass.introspector;
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import org.codehaus.metaclass.model.ClassDescriptor;
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/**
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* This class is responsible for loading and caching the {@link ClassDescriptor}
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* objects for corresponding java classes. It serves a similar purpose as the
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* {@link java.beans.Introspector} class does for Java Beans.
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*
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* @author Peter Donald
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* @version $Revision: 1.9 $ $Date: 2004/01/16 00:25:55 $
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*/
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public final class MetaClassIntrospector |
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{ |
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/** Permission needed to clear complete cache. */
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private static final RuntimePermission CLEAR_CACHE_PERMISSION = |
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new RuntimePermission( "metaclass.clearCompleteCache" ); |
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/** Permission needed to set the accessor. */
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private static final RuntimePermission SET_ACCESSOR_PERMISSION = |
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new RuntimePermission( "metaclass.setAccessor" ); |
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/** The cache in which descriptor objects are stored. */
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private static final CachingMetaClassAccessor c_cachingAccessor = |
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new CachingMetaClassAccessor();
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/**
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* Wrapper Accessor that is passed to the above accessor to retrieve
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* ClassDescriptors. Ensures that no Accessor can get a direct reference to
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* the CachingMetaClassAccessor and thus subvert descriptor loading
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* process.
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*/
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private static final WrapperMetaClassAccessor c_wrapperAccessor = |
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new WrapperMetaClassAccessor( c_cachingAccessor );
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/**
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* Flush all of the Introspector's internal caches. This method is not
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* normally required. It is normally only needed by advanced tools that
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* update existing "Class" objects in-place and need to make the
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* Introspector re-analyze existing Class objects.
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*
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* <p>Note that the caller must have been granted the
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* "metaclass.clearCompleteCache" {@link java.lang.RuntimePermission} or
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* else a security exception will be thrown.</p>
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*
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* @throws java.lang.SecurityException if the caller does not have
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* permission to clear cache
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*/
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public static synchronized void clearCompleteCache() |
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{ |
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final SecurityManager sm = System.getSecurityManager(); |
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if( null != sm ) |
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{ |
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sm.checkPermission( CLEAR_CACHE_PERMISSION ); |
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} |
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c_cachingAccessor.clear(); |
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} |
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/**
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* Set the MetaClassAccessor to use to locate ClassDescriptor objects.
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*
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* <p>Note that the caller must have been granted the
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* "metaclass.setAccessor" {@link java.lang.RuntimePermission} or else a
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* security exception will be thrown.</p>
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*
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* @param accessor the MetaClassAccessor
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* @throws SecurityException if the caller does not have permission to clear
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* cache
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*/
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public static void setAccessor( final MetaClassAccessor accessor ) |
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{ |
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final SecurityManager sm = System.getSecurityManager(); |
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if( null != sm ) |
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{ |
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sm.checkPermission( SET_ACCESSOR_PERMISSION ); |
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} |
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c_cachingAccessor.setAccessor( accessor ); |
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} |
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/**
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* @see MetaClassAccessor#getClassDescriptor
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*/
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public static ClassDescriptor getClassDescriptor( final Class clazz ) |
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throws MetaClassException
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{ |
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return getClassDescriptor( clazz.getName(), clazz.getClassLoader() );
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} |
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/**
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* @see MetaClassAccessor#getClassDescriptor
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*/
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public static ClassDescriptor |
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getClassDescriptor( final String classname, |
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final ClassLoader classLoader ) |
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throws MetaClassException
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{ |
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return c_cachingAccessor.getClassDescriptor( classname,
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classLoader, |
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c_wrapperAccessor ); |
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} |
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} |
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