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Author: ersiner
Date: Fri Jun 16 16:32:28 2006
New Revision: 414959
URL: http://svn.apache.org/viewvc?rev=414959&view=rev
Log:
Added new Class Utils class.
Will merge other Class Utils classes to this one later.
Added:
directory/trunks/shared/ldap/src/main/java/org/apache/directory/shared/ldap/util/DirectoryClassUtils.java
Added:
directory/trunks/shared/ldap/src/main/java/org/apache/directory/shared/ldap/util/DirectoryClassUtils.java
URL:
http://svn.apache.org/viewvc/directory/trunks/shared/ldap/src/main/java/org/apache/directory/shared/ldap/util/DirectoryClassUtils.java?rev=414959&view=auto
==============================================================================
---
directory/trunks/shared/ldap/src/main/java/org/apache/directory/shared/ldap/util/DirectoryClassUtils.java
(added)
+++
directory/trunks/shared/ldap/src/main/java/org/apache/directory/shared/ldap/util/DirectoryClassUtils.java
Fri Jun 16 16:32:28 2006
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2006 The Apache Software Foundation
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.directory.shared.ldap.util;
+
+import java.lang.reflect.Method;
+
+/**
+ * @author <a href="mailto:dev@xxxxxxxxxxxxxxxxxxxx";>Apache Directory
Project</a>
+ * @version $Rev:$
+ */
+public class DirectoryClassUtils
+{
+
+ /**
+ * A replacement {@link java.lang.Class.getMethod} with extended
functionality.
+ *
+ * <p>
+ * This method returns parameter-list assignment-compatible method as well
as
+ * exact-signature matching method.
+ *
+ * @param clazz
+ * @param candidateMethodName
+ * @param candidateParameterTypes
+ * @return
+ * @throws NoSuchMethodException
+ */
+ public static Method getAssignmentCompatibleMethod( Class clazz,
+ String
candidateMethodName,
+ Class[]
candidateParameterTypes
+ ) throws
NoSuchMethodException
+ {
+ try
+ {
+ // Look for exactly the same signature.
+ clazz.getMethod( candidateMethodName, candidateParameterTypes );
+ }
+ catch ( SecurityException e ) { }
+ catch ( NoSuchMethodException e ) { }
+
+ /**
+ * Look for the assignment-compatible signature.
+ */
+
+ // Get all methods of the clazz.
+ Method[] methods = clazz.getMethods();
+
+ // For each method of the clazz...
+ for ( int mx = 0; mx < methods.length; mx++ )
+ {
+ // ... Get parameter types list.
+ Class[] parameterTypes = methods[ mx ].getParameterTypes();
+
+ // If parameter types list length mismatch...
+ if ( parameterTypes.length != candidateParameterTypes.length )
+ {
+ // ... Go on with the next method.
+ continue;
+ }
+ // If parameter types list length is OK...
+ // ... For each parameter of the method...
+ for ( int px = 0; px < parameterTypes.length; px++ )
+ {
+ // ... If the parameter is not assignment-compatible with the
candidate parameter type...
+ if ( ! parameterTypes[ px ].isAssignableFrom(
candidateParameterTypes[ px ] ) )
+ {
+ // ... Go on with the next method.
+ break;
+ }
+ }
+
+ // Return the only one possible and found method.
+ return methods[ mx ];
+ }
+
+ throw new NoSuchMethodException();
+
+ }
+
+}
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