Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/client/utils/DoubleValidator.java @ 2929:0ef4753e5515
Improved manual wsp input validation.
flys-client/trunk@4830 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Thu, 28 Jun 2012 15:44:10 +0000 |
| parents | 4f4d29404dba |
| children | a30d77d86386 |
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| 2928:f0c7c52203c0 | 2929:0ef4753e5515 |
|---|---|
| 14 */ | 14 */ |
| 15 public class DoubleValidator implements Validator { | 15 public class DoubleValidator implements Validator { |
| 16 | 16 |
| 17 /** The interface that provides i18n messages. */ | 17 /** The interface that provides i18n messages. */ |
| 18 protected FLYSConstants MSG = GWT.create(FLYSConstants.class); | 18 protected FLYSConstants MSG = GWT.create(FLYSConstants.class); |
| 19 | |
| 20 | |
| 21 /** Statically determine doubility of String value. */ | |
| 22 public static boolean isDouble(Object obj) { | |
| 23 if (obj == null) { | |
| 24 return false; | |
| 25 } | |
| 26 | |
| 27 boolean valid = true; | |
| 28 String v = obj.toString(); | |
| 29 | |
| 30 NumberFormat f = NumberFormat.getDecimalFormat(); | |
| 31 | |
| 32 try { | |
| 33 if (v == null) { | |
| 34 throw new NumberFormatException("empty"); | |
| 35 } | |
| 36 | |
| 37 double value = f.parse(v); | |
| 38 } | |
| 39 catch (NumberFormatException nfe) { | |
| 40 valid = false; | |
| 41 } | |
| 42 return valid; | |
| 43 | |
| 44 } | |
| 19 | 45 |
| 20 /** | 46 /** |
| 21 * | 47 * |
| 22 */ | 48 */ |
| 23 public boolean validate(FormItem item, Map errors) { | 49 public boolean validate(FormItem item, Map errors) { |