Coverage Report - org.codehaus.plexus.interpolation.PropertiesBasedValueSource
 
Classes in this File Line Coverage Branch Coverage Complexity
PropertiesBasedValueSource
100%
4/4
50%
1/2
1.5
 
 1  
 package org.codehaus.plexus.interpolation;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2008 Codehaus Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License");
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *      http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import java.util.Properties;
 20  
 
 21  
 /**
 22  
  * {@link ValueSource} implementation that wraps a {@link Properties} instance,
 23  
  * and does a simple lookup of the entire expression string as the parameter for
 24  
  * {@link Properties#getProperty(String)}, returning the result as the resolved
 25  
  * value.
 26  
  *
 27  
  * @author jdcasey
 28  
  */
 29  
 public class PropertiesBasedValueSource
 30  
     extends AbstractValueSource
 31  
 {
 32  
 
 33  
     private final Properties properties;
 34  
 
 35  
     /**
 36  
      * Wrap the specified {@link Properties} object for use as a value source.
 37  
      * Nulls are allowed.
 38  
      *
 39  
      * @param properties The properties instance to wrap.
 40  
      */
 41  
     public PropertiesBasedValueSource( Properties properties )
 42  
     {
 43  35
         super( false );
 44  35
         this.properties = properties;
 45  35
     }
 46  
 
 47  
     /**
 48  
      * @return the result of {@link Properties#getProperty(String)}, using the
 49  
      * entire expression as the key to lookup. If the wrapped properties instance
 50  
      * is null, simply return null.
 51  
      */
 52  
     public Object getValue( String expression )
 53  
     {
 54  41
         return properties == null ? null : properties.getProperty( expression );
 55  
     }
 56  
 
 57  
 }