Datacage: Introduced <dc:group epxr="xpath" type="type"> ... </dc:group> and XPath function dc:group-key(). This splits the current result set into groups formed by expr. The type defaults to string. Afterwards all these groups are iterated by there natural order. The dc:group-key() gives access to the result of the grouping expression that forms a group. Say, you have a result set like this: name | description -----+------------ a | foo a | bar b | baz b | bla c | blub you can use: <dc:group expr="$name"> <group name="{dc:group-key()}"> <dc:for-each> <description value="{$description}"/> </dc:for-each> </group> </dc:group> to create: <group name="a"> <description name="foo"/> <description name="bar"/> </group> <group name="b"> <description name="baz"/> <description name="bla"/> </group> <group name="c"> <description name="blub"/> </group>

--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/FunctionResolver.java	Thu May 02 17:58:16 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/FunctionResolver.java	Thu May 02 20:52:18 2013 +0200
@@ -104,6 +104,13 @@
             }
         });
 
+        addFunction("group-key", 0, new XPathFunction() {
+            @Override
+            public Object evaluate(List args) throws XPathFunctionException {
+                return FunctionResolver.this.buildHelper.getGroupKey();
+            }
+        });
+
         addFunction("date-format", 2, new XPathFunction() {
             @Override
             public Object evaluate(List args) throws XPathFunctionException {