Author: simonetripodi
Date: Fri Jan 27 16:00:42 2012
New Revision: 1236726
URL: http://svn.apache.org/viewvc?rev=1236726&view=rev
Log:
first checkin of PropertyDescriptor registry - it will be needed to get/set
properties
Added:
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
(with props)
Added:
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java?rev=1236726&view=auto
==============================================================================
---
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
(added)
+++
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
Fri Jan 27 16:00:42 2012
@@ -0,0 +1,100 @@
+package org.apache.commons.beanutils2;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import static java.beans.Introspector.getBeanInfo;
+
+import java.beans.BeanInfo;
+import java.beans.IntrospectionException;
+import java.beans.PropertyDescriptor;
+import java.lang.ref.Reference;
+import java.lang.ref.WeakReference;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.WeakHashMap;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ *
+ */
+final class PropertyDescriptorsRegistry
+{
+
+ private static final PropertyDescriptorsRegistry INSTANCE = new
PropertyDescriptorsRegistry();
+
+ public static PropertyDescriptorsRegistry getInstance()
+ {
+ return INSTANCE;
+ }
+
+ private final ReadWriteLock lock = new ReentrantReadWriteLock();
+
+ private final Map<Class<?>, WeakReference<Map<String,
PropertyDescriptor>>> cache =
+ new WeakHashMap<Class<?>, WeakReference<Map<String,
PropertyDescriptor>>>();
+
+ /**
+ * This class cann not be instantiated.
+ */
+ private PropertyDescriptorsRegistry()
+ {
+ // do nothing
+ }
+
+ public PropertyDescriptor getPropertyDescriptor( Class<?> beanType, String
propertyName )
+ throws IntrospectionException
+ {
+ Lock readLock = lock.readLock();
+ readLock.lock();
+ try
+ {
+ Reference<Map<String, PropertyDescriptor>> methodReference =
cache.get( beanType );
+ if ( methodReference != null )
+ {
+ return methodReference.get().get( propertyName );
+ }
+ }
+ finally
+ {
+ readLock.unlock();
+ }
+
+ Lock writeLock = lock.writeLock();
+ writeLock.lock();
+ try
+ {
+ final Map<String, PropertyDescriptor> propertiesIndex = new
HashMap<String, PropertyDescriptor>();
+ BeanInfo beanInfo = getBeanInfo( beanType );
+
+ for ( PropertyDescriptor propertyDescriptor :
beanInfo.getPropertyDescriptors() )
+ {
+ propertiesIndex.put( propertyDescriptor.getName(),
propertyDescriptor );
+ }
+
+ cache.put( beanType, new WeakReference<Map<String,
PropertyDescriptor>>( propertiesIndex ) );
+
+ return propertiesIndex.get( propertyName );
+ }
+ finally
+ {
+ writeLock.unlock();
+ }
+ }
+
+}
Propchange:
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
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Propchange:
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
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svn:keywords = Date Author Id Revision HeadURL
Propchange:
commons/sandbox/beanutils2/trunk/src/main/java/org/apache/commons/beanutils2/PropertyDescriptorsRegistry.java
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