AbstractScalarProperty


1   package net.sourceforge.pmd.properties;
2   
3   import net.sourceforge.pmd.util.StringUtil;
4   
5   /**
6    * No, subclasses are not necessarily scalar per se, they're just easy to parse without error.
7    * If you can come up with a better name...
8    * 
9    * @author Brian Remedios
10   * @version $Revision$
11   */
12  public abstract class AbstractScalarProperty extends AbstractPMDProperty {
13  
14      /**
15       * Constructor for AbstractScalarProperty.
16       * @param theName String
17       * @param theDescription String
18       * @param theDefault Object
19       * @param theUIOrder float
20       */
21      public AbstractScalarProperty(String   theName, String   theDescription, Object   theDefault, float theUIOrder) {
22          super(theName, theDescription, theDefault, theUIOrder);
23      }
24  
25      /**
26       * Method createFrom.
27       * @param value String
28       * @return Object
29       */
30      protected abstract Object   createFrom(String   value);
31      
32      /**
33       * Method arrayFor.
34       * @param size int
35       * @return Object[]
36       */
37      protected abstract Object  [] arrayFor(int size);
38      
39      /**
40       * Method valueFrom.
41       * @param valueString String
42       * @return Object[]
43       * @throws IllegalArgumentException
44       * @see net.sourceforge.pmd.PropertyDescriptor#valueFrom(String)
45       */
46      public Object   valueFrom(String   valueString) throws IllegalArgumentException   {
47          
48          if (maxValueCount() == 1) return createFrom(valueString);
49          
50          String  [] strValues = StringUtil.substringsOf(valueString, multiValueDelimiter);
51          
52          Object  [] values = arrayFor(strValues.length);
53          for (int i=0; i<strValues.length; i++) values[i] = createFrom(strValues[i]);
54          return values;
55      }
56  }
57
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