Coverage Report - org.apache.commons.scxml.env.jsp.RootContext

Classes in this File Line Coverage Branch Coverage Complexity
RootContext
61% 
100% 
2.286

 1   
 /*
 2   
  * Licensed to the Apache Software Foundation (ASF) under one or more
 3   
  * contributor license agreements.  See the NOTICE file distributed with
 4   
  * this work for additional information regarding copyright ownership.
 5   
  * The ASF licenses this file to You under the Apache License, Version 2.0
 6   
  * (the "License"); you may not use this file except in compliance with
 7   
  * the License.  You may obtain a copy of the License at
 8   
  *
 9   
  *     http://www.apache.org/licenses/LICENSE-2.0
 10   
  *
 11   
  * Unless required by applicable law or agreed to in writing, software
 12   
  * distributed under the License is distributed on an "AS IS" BASIS,
 13   
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14   
  * See the License for the specific language governing permissions and
 15   
  * limitations under the License.
 16   
  */
 17   
 package org.apache.commons.scxml.env.jsp;
 18   
 
 19   
 import java.io.IOException;
 20   
 import java.io.NotSerializableException;
 21   
 import java.io.ObjectInputStream;
 22   
 import java.io.ObjectOutputStream;
 23   
 
 24   
 import javax.servlet.jsp.JspContext;
 25   
 import javax.servlet.jsp.el.ELException;
 26   
 import javax.servlet.jsp.el.VariableResolver;
 27   
 
 28   
 /**
 29   
  * EL Context for root SCXML element. Wrapper around the host JSP context.
 30   
  * Must treat variables in the host JSP environments as read-only.
 31   
  *
 32   
  */
 33   
 public final class RootContext extends ELContext {
 34   
 
 35   
     /** Host JSP's VariableResolver. */
 36   
     private VariableResolver variableResolver;
 37   
     /** Bark if JSP Context is null. */
 38   
     private static final String ERR_HOST_JSP_CTX_NULL =
 39   
         "Host JSP Context cannot be null";
 40   
 
 41   
     /**
 42   
      * Constructor.
 43   
      *
 44   
      * @param ctx the host JspContext
 45   
      */
 46   
     public RootContext(final JspContext ctx) {
 47  1 
         super();
 48  1 
         if (ctx == null) {
 49  0 
             getLog().error(ERR_HOST_JSP_CTX_NULL);
 50  0 
             throw new IllegalArgumentException(ERR_HOST_JSP_CTX_NULL);
 51   
         } else {
 52   
           // only retain the VariableResolver
 53  1 
           this.variableResolver = ctx.getVariableResolver();
 54   
         }
 55  1 
     }
 56   
 
 57   
     /**
 58   
      * Get the value of the given variable in this Context.
 59   
      *
 60   
      * @param name The name of the variable
 61   
      * @return The value (or null)
 62   
      * @see org.apache.commons.scxml.Context#get(java.lang.String)
 63   
      */
 64   
     public Object get(final String name) {
 65  5 
         Object value = super.get(name);
 66  5 
         if (value == null) {
 67   
             try {
 68  4 
                 value = variableResolver.resolveVariable(name);
 69  0 
             } catch (ELException ele) {
 70  0 
                 getLog().error(ele.getMessage(), ele);
 71  4 
             }
 72   
         }
 73  5 
         return value;
 74   
     }
 75   
 
 76   
     /**
 77   
      * Does the given variable exist in this Context.
 78   
      *
 79   
      * @param name The name of the variable
 80   
      * @return boolean true if the variable exists
 81   
      * @see org.apache.commons.scxml.Context#has(java.lang.String)
 82   
      */
 83   
     public boolean has(final String name) {
 84  2 
         boolean exists = super.has(name);
 85  2 
         Object value = null;
 86  2 
         if (!exists) {
 87   
             try {
 88  2 
                 value = variableResolver.resolveVariable(name);
 89  0 
             } catch (ELException ele) {
 90  0 
                 getLog().error(ele.getMessage(), ele);
 91  2 
             }
 92  2 
             if (value != null) {
 93  2 
                 exists = true;
 94   
             }
 95   
         }
 96  2 
         return exists;
 97   
     }
 98   
 
 99   
     /**
 100   
      * Get the VariableResolver associated with this root context.
 101   
      *
 102   
      * @return Returns the variableResolver.
 103   
      */
 104   
     public VariableResolver getVariableResolver() {
 105  0 
         return variableResolver;
 106   
     }
 107   
 
 108   
     /**
 109   
      * Set the VariableResolver associated with this root context.
 110   
      *
 111   
      * @param variableResolver The variableResolver to set.
 112   
      */
 113   
     public void setVariableResolver(final VariableResolver variableResolver) {
 114  0 
         this.variableResolver = variableResolver;
 115  0 
     }
 116   
 
 117   
     //--------------------------------------------------- Truth in advertising
 118   
 
 119   
     /**
 120   
      * Instances of this class are not serializable.
 121   
      *
 122   
      * @param out The object output stream.
 123   
      * @throws IOException Guaranteed to throw a NotSerializableException
 124   
      */
 125   
     private void writeObject(final ObjectOutputStream out)
 126   
     throws IOException {
 127  0 
         throw new NotSerializableException();
 128   
     }
 129   
 
 130   
     /**
 131   
      * Instances of this class are not serializable.
 132   
      *
 133   
      * @param in The object input stream.
 134   
      * @throws IOException Guaranteed to throw a NotSerializableException
 135   
      */
 136   
     private void readObject(final ObjectInputStream in)
 137   
     throws IOException {
 138  0 
         throw new NotSerializableException();
 139   
     }
 140   
 
 141   
 }
 142   
 

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