Coverage report

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org.apache.commons.jelly.tags.jmx.OperationTag
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 1  
 /*
 2  
  * Copyright 2002,2004 The Apache Software Foundation.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *      http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 
 17  
 package org.apache.commons.jelly.tags.jmx;
 18  
 
 19  
 import java.util.ArrayList;
 20  
 import java.util.List;
 21  
 
 22  
 import javax.management.ObjectName;
 23  
 
 24  
 import org.apache.commons.jelly.JellyTagException;
 25  
 import org.apache.commons.jelly.MissingAttributeException;
 26  
 import org.apache.commons.jelly.TagSupport;
 27  
 import org.apache.commons.jelly.XMLOutput;
 28  
 import org.apache.commons.jelly.impl.CollectionTag;
 29  
 import org.apache.commons.logging.Log;
 30  
 import org.apache.commons.logging.LogFactory;
 31  
 
 32  
 /**
 33  
  * Registers a JavaBean or JMX MBean with a server..
 34  
  *
 35  
  * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
 36  
  * @version $Revision: 1.4 $
 37  
  */
 38  0
 public class OperationTag extends TagSupport implements CollectionTag {
 39  
 
 40  
     /** The Log to which logging calls will be made. */
 41  0
     private static final Log log = LogFactory.getLog(OperationTag.class);
 42  
 
 43  
     private String name;
 44  
     private Object arguments;
 45  0
     private List argList = null;
 46  
     private String[] parameters;
 47  
 
 48  0
     public OperationTag() {
 49  0
     }
 50  
 
 51  
 
 52  
     // CollectionTag interface
 53  
     //-------------------------------------------------------------------------
 54  
     public void addItem(Object value) {
 55  0
         if (argList == null) {
 56  0
             argList = new ArrayList();
 57  
         }
 58  0
         argList.add(value);
 59  0
     }
 60  
 
 61  
     // Tag interface
 62  
     //-------------------------------------------------------------------------
 63  
     public void doTag(XMLOutput output) throws MissingAttributeException, JellyTagException {
 64  0
         if (name == null) {
 65  0
             throw new MissingAttributeException("name");
 66  
         }
 67  
 
 68  0
         RegisterTag registerTag = (RegisterTag) findAncestorWithClass(RegisterTag.class);
 69  0
         if (registerTag == null) {
 70  0
             throw new JellyTagException("This class must be nested inside a <register> tag");
 71  
         }
 72  0
         Object bean = null;
 73  
         try {
 74  0
             invokeBody(output);
 75  
 
 76  0
             ObjectName objectName = registerTag.getName();
 77  0
             registerTag.getServer().invoke(objectName, getName(), getArgumentArray(), getParameters());
 78  0
         }
 79  
         catch (JellyTagException e) {
 80  0
             throw e;
 81  
         }
 82  
         catch (Exception e) {
 83  0
             throw new JellyTagException("Failed to register bean: " + bean, e);
 84  
         }
 85  
         finally {
 86  0
             argList = null;
 87  
         }
 88  0
     }
 89  
 
 90  
 
 91  
     // Properties
 92  
     //-------------------------------------------------------------------------
 93  
 
 94  
 
 95  
 
 96  
     /**
 97  
      * @return Object
 98  
      */
 99  
     public Object getArguments() {
 100  0
         return arguments;
 101  
     }
 102  
 
 103  
     /**
 104  
      * @return String
 105  
      */
 106  
     public String getName() {
 107  0
         return name;
 108  
     }
 109  
 
 110  
     /**
 111  
      * @return String[]
 112  
      */
 113  
     public String[] getParameters() {
 114  0
         return parameters;
 115  
     }
 116  
 
 117  
     /**
 118  
      * Sets the arguments.
 119  
      * @param arguments The arguments to set
 120  
      */
 121  
     public void setArguments(Object arguments) {
 122  0
         this.arguments = arguments;
 123  0
     }
 124  
 
 125  
     /**
 126  
      * Sets the name.
 127  
      * @param name The name to set
 128  
      */
 129  
     public void setName(String name) {
 130  0
         this.name = name;
 131  0
     }
 132  
 
 133  
     /**
 134  
      * Sets the parameters.
 135  
      * @param parameters The parameters to set
 136  
      */
 137  
     public void setParameters(String[] parameters) {
 138  0
         this.parameters = parameters;
 139  0
     }
 140  
 
 141  
     // Implementation methods
 142  
     //-------------------------------------------------------------------------
 143  
 
 144  
     /**
 145  
      * Converts the argument property into an Object[] or converts the list of
 146  
      * added argument objects (added via child tags) to an Object[] or
 147  
      * return an empty argument array.
 148  
      */
 149  
     protected Object[] getArgumentArray() {
 150  0
         Object arg = getArguments();
 151  0
         if (arg != null) {
 152  0
             if (arg instanceof Object[]) {
 153  0
                 return (Object[]) arg;
 154  
             }
 155  
             else {
 156  0
                 return new Object[] { arg };
 157  
             }
 158  
         }
 159  0
         else if (argList != null) {
 160  0
             return argList.toArray();
 161  
         }
 162  
         else {
 163  0
             return new Object[0];
 164  
         }
 165  
     }
 166  
 }

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