View Javadoc

1   /*
2    * $Id: LongConverter.java,v 1.1 2006/10/13 18:04:51 oeuillot Exp $
3    */
4   package org.rcfaces.core.converter;
5   
6   import javax.faces.component.UIComponent;
7   import javax.faces.context.FacesContext;
8   import javax.faces.convert.ConverterException;
9   
10  /**
11   * 
12   * @author Olivier Oeuillot (latest modification by $Author: oeuillot $)
13   * @version $Revision: 1.1 $ $Date: 2006/10/13 18:04:51 $
14   */
15  public class LongConverter extends AbstractNumberConverter {
16      private static final String REVISION = "$Revision: 1.1 $";
17  
18      public LongConverter() {
19          setIntegerOnly(true);
20      }
21  
22      public Object getAsObject(FacesContext context, UIComponent component,
23              String value) {
24  
25          if (value == null || value.trim().length() < 1) {
26              Object v = getDefaultValue();
27              if (v instanceof Long) {
28                  return v;
29              }
30              if (v instanceof Number) {
31                  return new Long(((Number) v).longValue());
32              }
33              value = (String) v;
34          }
35  
36          Number number = (Number) super.getAsObject(context, component, value);
37  
38          if (number == null || (number instanceof Long)) {
39              return number;
40          }
41  
42          double d = number.doubleValue();
43          if (d < Long.MIN_VALUE || d > Long.MAX_VALUE) {
44              throw new ConverterException(
45                      "Number can not be converted to long. (value=" + d + ")");
46          }
47  
48          return new Long(number.longValue());
49      }
50  }