Coverage report

| %line | %branch
--- | --- | ---
org.apache.commons.jexl.util.introspection.Introspector |
27% |
67% |

1 |  |
     /*
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      * Copyright 2001-2006 The Apache Software Foundation.
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      *
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      * Licensed under the Apache License, Version 2.0 (the "License");
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      * you may not use this file except in compliance with the License.
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      * You may obtain a copy of the License at
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      *
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      *      http://www.apache.org/licenses/LICENSE-2.0
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      *
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      * Unless required by applicable law or agreed to in writing, software
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      * distributed under the License is distributed on an "AS IS" BASIS,
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      * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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      * See the License for the specific language governing permissions and
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      * limitations under the License.
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      */
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     package org.apache.commons.jexl.util.introspection;
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     import java.lang.reflect.Method;
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     import org.apache.commons.logging.Log;
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     /**
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      * This basic function of this class is to return a Method
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      * object for a particular class given the name of a method
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      * and the parameters to the method in the form of an Object[]
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      *
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      * The first time the Introspector sees a
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      * class it creates a class method map for the
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      * class in question. Basically the class method map
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      * is a Hashtable where Method objects are keyed by a
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      * concatenation of the method name and the names of
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      * classes that make up the parameters.
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      *
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      * For example, a method with the following signature:
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      *
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      * public void method(String a, StringBuffer b)
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      *
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      * would be mapped by the key:
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      *
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      * "method" + "java.lang.String" + "java.lang.StringBuffer"
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      *
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      * This mapping is performed for all the methods in a class
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      * and stored for
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      * @since 1.0
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      * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
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      * @author <a href="mailto:bob@werken.com">Bob McWhirter</a>
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      * @author <a href="mailto:szegedia@freemail.hu">Attila Szegedi</a>
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      * @author <a href="mailto:paulo.gaspar@krankikom.de">Paulo Gaspar</a>
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      * @version $Id: Introspector.java 398171 2006-04-29 14:57:29Z dion $
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      */
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     public class Introspector extends IntrospectorBase {
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         /**
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          *  define a public string so that it can be looked for
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          *  if interested.
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          */
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         public static final String CACHEDUMP_MSG =
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             "Introspector : detected classloader change. Dumping cache.";
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         /**
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          *  our engine runtime services.
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          */
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         private final Log rlog;
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         /**
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          *  Recieves our RuntimeServices object.
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          *  @param logger a {@link Log}.
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          */
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         public Introspector(Log logger) {
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             this.rlog = logger;
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         }
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         /**
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          * Gets the method defined by <code>name</code> and
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          * <code>params</code> for the Class <code>c</code>.
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          *
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          * @param c Class in which the method search is taking place
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          * @param name Name of the method being searched for
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          * @param params An array of Objects (not Classes) that describe the
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          *               the parameters
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          *
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          * @return The desired Method object.
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          * @throws Exception if the superclass does.
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          */
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         public Method getMethod(Class c, String name, Object[] params) throws Exception {
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             /*
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              *  just delegate to the base class
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              */
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             try {
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                 return super.getMethod(c, name, params);
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             } catch (MethodMap.AmbiguousException ae) {
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                 /*
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                  *  whoops.  Ambiguous.  Make a nice log message and return null...
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                  */
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                 StringBuffer msg = new StringBuffer("Introspection Error : Ambiguous method invocation ")
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                     .append(name).append("( ");
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102 | 0 |
                 for (int i = 0; i < params.length; i++) {
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                     if (i > 0) {
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                         msg.append(", ");
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                     }
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                     msg.append(params[i].getClass().getName());
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                 }
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110 | 0 |
                 msg.append(") for class ").append(c.getName());
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                 rlog.error(msg.toString());
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             }
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115 | 0 |
             return null;
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         }
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         /**
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          * Clears the classmap and classname
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          * caches, and logs that we did so.
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          */
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         protected void clearCache() {
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             super.clearCache();
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             rlog.info(CACHEDUMP_MSG);
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         }
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     }

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