Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/FunctionResolver.java @ 8960:66ce19d2c5f1
Added new 'column' xpath function that allows to access a data-column via a name using variable replacement.
| author | gernotbelger |
|---|---|
| date | Wed, 28 Mar 2018 14:34:55 +0200 |
| parents | 5e38e2924c07 |
| children | 5030c46d8cb4 |
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| 8959:175f113ed939 | 8960:66ce19d2c5f1 |
|---|---|
| 219 public Object evaluate(List args) throws XPathFunctionException { | 219 public Object evaluate(List args) throws XPathFunctionException { |
| 220 return minNumber(args.get(0)); | 220 return minNumber(args.get(0)); |
| 221 } | 221 } |
| 222 }); | 222 }); |
| 223 | 223 |
| 224 addFunction("column", 1, new XPathFunction() { | |
| 225 @Override | |
| 226 public Object evaluate(List args) throws XPathFunctionException { | |
| 227 return column(args.get(0)); | |
| 228 } | |
| 229 }); | |
| 224 } | 230 } |
| 225 | 231 |
| 226 /** | 232 /** |
| 227 * Create a new function. | 233 * Create a new function. |
| 228 * @param name Name of the function. | 234 * @param name Name of the function. |
| 576 return x; | 582 return x; |
| 577 } | 583 } |
| 578 } | 584 } |
| 579 return StackFrames.NULL; | 585 return StackFrames.NULL; |
| 580 } | 586 } |
| 587 | |
| 588 private Object column(Object argument) { | |
| 589 | |
| 590 if( !(argument instanceof String) ) | |
| 591 throw new IllegalArgumentException("Argument of 'column' function must be a string"); | |
| 592 | |
| 593 String columnName = (String) argument; | |
| 594 | |
| 595 StackFrames frms = buildHelper.frames; | |
| 596 | |
| 597 return frms.getNull(columnName); | |
| 598 } | |
| 581 } | 599 } |
| 582 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 600 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |