Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/Builder.java @ 5974:95cb104a871b
Add dc:iterate function
This function can be used to iterate over a collection setting
var to the current element.
Patch provided by Sascha Teichmann.
| author | Andre Heinecke <aheinecke@intevation.de> |
|---|---|
| date | Fri, 10 May 2013 11:31:51 +0200 |
| parents | 9a3ca7532f2a |
| children | af13ceeba52a |
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| 5973:21581eacc1de | 5974:95cb104a871b |
|---|---|
| 15 import java.sql.Connection; | 15 import java.sql.Connection; |
| 16 import java.sql.SQLException; | 16 import java.sql.SQLException; |
| 17 | 17 |
| 18 import java.util.ArrayDeque; | 18 import java.util.ArrayDeque; |
| 19 import java.util.ArrayList; | 19 import java.util.ArrayList; |
| 20 import java.util.Arrays; | |
| 21 import java.util.Collection; | |
| 20 import java.util.Collections; | 22 import java.util.Collections; |
| 21 import java.util.Deque; | 23 import java.util.Deque; |
| 22 import java.util.HashMap; | 24 import java.util.HashMap; |
| 23 import java.util.List; | 25 import java.util.List; |
| 24 import java.util.Map; | 26 import java.util.Map; |
| 455 return groupExprStack.isEmpty() | 457 return groupExprStack.isEmpty() |
| 456 ? null | 458 ? null |
| 457 : groupExprStack.peek(); | 459 : groupExprStack.peek(); |
| 458 } | 460 } |
| 459 | 461 |
| 462 protected void iterate(Node parent, Element current) | |
| 463 throws SQLException | |
| 464 { | |
| 465 log.debug("dc:iterate"); | |
| 466 String container = expand(current.getAttribute("container")); | |
| 467 String var = expand(current.getAttribute("var")).toUpperCase(); | |
| 468 | |
| 469 if (container.isEmpty()) { | |
| 470 log.warn("'container' not set."); | |
| 471 return; | |
| 472 } | |
| 473 | |
| 474 if (var.isEmpty()) { | |
| 475 log.warn("'var' not set."); | |
| 476 return; | |
| 477 } | |
| 478 | |
| 479 Object [] result = new Object[1]; | |
| 480 | |
| 481 log.debug("Foo"); | |
| 482 | |
| 483 if (frames.getStore(container, result)) { | |
| 484 Object c = result[0]; | |
| 485 if (c instanceof Object []) { | |
| 486 c = Arrays.asList((Object [])c); | |
| 487 } | |
| 488 if (c instanceof Collection) { | |
| 489 frames.enter(); | |
| 490 try { | |
| 491 Collection<?> col = (Collection<?>)c; | |
| 492 for (Object o: col) { | |
| 493 if (o instanceof String) { | |
| 494 o = ((String)o).toLowerCase(); | |
| 495 } | |
| 496 frames.put(var, o); | |
| 497 NodeList subs = current.getChildNodes(); | |
| 498 for (int i = 0, N = subs.getLength(); i < N; ++i) { | |
| 499 build(parent, subs.item(i)); | |
| 500 } | |
| 501 } | |
| 502 } | |
| 503 finally { | |
| 504 frames.leave(); | |
| 505 } | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 | |
| 460 /** | 511 /** |
| 461 * Kind of foreach over results of a statement within a context. | 512 * Kind of foreach over results of a statement within a context. |
| 462 */ | 513 */ |
| 463 protected void foreach(Node parent, Element current) | 514 protected void foreach(Node parent, Element current) |
| 464 throws SQLException | 515 throws SQLException |
| 835 else if ("element".equals(localName)) { | 886 else if ("element".equals(localName)) { |
| 836 element(parent, curr); | 887 element(parent, curr); |
| 837 } | 888 } |
| 838 else if ("for-each".equals(localName)) { | 889 else if ("for-each".equals(localName)) { |
| 839 foreach(parent, curr); | 890 foreach(parent, curr); |
| 891 } | |
| 892 else if ("iterate".equals(localName)) { | |
| 893 iterate(parent, curr); | |
| 840 } | 894 } |
| 841 else if ("filter".equals(localName)) { | 895 else if ("filter".equals(localName)) { |
| 842 filter(parent, curr); | 896 filter(parent, curr); |
| 843 } | 897 } |
| 844 else if ("group".equals(localName)) { | 898 else if ("group".equals(localName)) { |