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    1   /*
    2    * $Id: ReflectionMetaMethod.java 4254 2006-11-23 20:38:19Z blackdrag $
    3    *
    4    * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
    5    *
    6    * Redistribution and use of this software and associated documentation
    7    * ("Software"), with or without modification, are permitted provided that the
    8    * following conditions are met:
    9    *  1. Redistributions of source code must retain copyright statements and
    10   * notices. Redistributions must also contain a copy of this document.
    11   *  2. Redistributions in binary form must reproduce the above copyright
    12   * notice, this list of conditions and the following disclaimer in the
    13   * documentation and/or other materials provided with the distribution.
    14   *  3. The name "groovy" must not be used to endorse or promote products
    15   * derived from this Software without prior written permission of The Codehaus.
    16   * For written permission, please contact info@codehaus.org.
    17   *  4. Products derived from this Software may not be called "groovy" nor may
    18   * "groovy" appear in their names without prior written permission of The
    19   * Codehaus. "groovy" is a registered trademark of The Codehaus.
    20   *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
    21   *
    22   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
    23   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    24   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    25   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
    26   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    27   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    28   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    29   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    30   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    31   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
    32   * DAMAGE.
    33   *
    34   */
    35  package org.codehaus.groovy.runtime;
    36
    37  import groovy.lang.MetaMethod;
    38
    39  import java.lang.reflect.InvocationTargetException;
    40  import java.lang.reflect.Method;
    41  import java.security.AccessController;
    42  import java.security.PrivilegedAction;
    43
    44  public class ReflectionMetaMethod extends MetaMethod {
    45      private Method method;
    46      boolean alreadySetAccessible;
    47
    48      public ReflectionMetaMethod(Method method) {
    49          super(method);
    50          this.method = method;
    51      }
    52
    53      public Object invoke(Object object, Object[] arguments) {
    54      	if ( !alreadySetAccessible ) {
    55  	    	AccessController.doPrivileged(new PrivilegedAction() {
    56  	    		public Object run() {
    57  	    			method.setAccessible(true);
    58  	                return null;
    59  	    		}
    60  	    	});
    61  	    	alreadySetAccessible = true;
    62      	}
    63
    64          //        System.out.println("About to invoke method: " + method);
    65          //        System.out.println("Object: " + object);
    66          //        System.out.println("Using arguments: " + InvokerHelper.toString(arguments));
    67
    68          try {
    69              return method.invoke(object, arguments);
    70          } catch (IllegalArgumentException e) {
    71              throw new InvokerInvocationException(e);
    72          } catch (IllegalAccessException e) {
    73              throw new InvokerInvocationException(e);
    74          } catch (InvocationTargetException e) {
    75              throw new InvokerInvocationException(e);
    76          }
    77      }
    78  }