String2BigDecimalValidator


1   /*
2    * Copyright (C) 2005 db4objects Inc.  http://www.db4o.com
3    * 
4    * All rights reserved. This program and the accompanying materials
5    * are made available under the terms of the Eclipse Public License v1.0
6    * which accompanies this distribution, and is available at
7    * http://www.eclipse.org/legal/epl-v10.html
8    *
9    * Contributors:
10   *     db4objects - Initial API and implementation
11   */
12  package org.eclipse.jface.internal.databinding.provisional.validation;
13  
14  import java.math.BigDecimal  ;
15  
16  import org.eclipse.jface.internal.databinding.internal.BindingMessages;
17  
18  
19  /**
20   * DoubleValidator.  Verify data input for Doubles
21   *
22   * @author djo
23   */
24  public class String2BigDecimalValidator implements IValidator {
25      
26      /* (non-Javadoc)
27       * @see org.eclipse.jface.databinding.validator.IValidator#isPartiallyValid(java.lang.Object)
28       */
29      public ValidationError isPartiallyValid(Object   fragment) {
30          if (((String  )fragment).matches("\\-?[0-9]*\\.?[0-9]*([0-9]+[e|E]\\-?([0-9]+\\.)?[0-9]*)?")) //$NON-NLS-1$
31              return null;
32  
33          return ValidationError.error(getHint());
34      }
35      
36      /* (non-Javadoc)
37       * @see org.eclipse.jface.viewers.ICellEditorValidator#isValid(java.lang.Object)
38       */
39      public ValidationError isValid(Object   value) {
40          try {
41              new BigDecimal  ((String  )value);
42              return null;
43          } catch (Throwable   t) {
44              return ValidationError.error(getHint());
45          }
46      }
47  
48      private String   getHint() {
49          return BindingMessages.getString("Validate_Like") +  //$NON-NLS-1$
50              BindingMessages.getString("Validate_Number_Examples"); //$NON-NLS-1$
51      }
52  
53  }
54

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