Nicolae Brinza has proposed merging lp:~nbrinza/zorba/bugs into lp:zorba.

Requested reviews:
  Markos Zaharioudakis (markos-za)
  Matthias Brantner (matthias-brantner)
Related bugs:
  Bug #867256 in Zorba: ""instance of document-node(element(x))" in predicate"
  https://bugs.launchpad.net/zorba/+bug/867256

For more details, see:
https://code.launchpad.net/~nbrinza/zorba/bugs/+merge/85862

Fix for lp: bug #867256 - test Steps-leading-lone-slash-8a is failing. 

Indeed, the condition that Markos mentioned was not necessary, so I have 
removed it. Resubmitting for merge into the trunk.
-- 
https://code.launchpad.net/~nbrinza/zorba/bugs/+merge/85862
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=== modified file 'ChangeLog'
--- ChangeLog	2011-12-13 03:38:23 +0000
+++ ChangeLog	2011-12-15 13:37:29 +0000
@@ -1,5 +1,9 @@
 Zorba - The XQuery Processor
 
+version 2.x
+
+  * Fixed bug #867256 (document-node(element(x)) types and tests were not working correctly)
+   
 version 2.2
 
   * Caching of results for recursive functions with atomic parameter and return types.

=== modified file 'src/types/typeimpl.cpp'
--- src/types/typeimpl.cpp	2011-07-01 05:22:12 +0000
+++ src/types/typeimpl.cpp	2011-12-15 13:37:29 +0000
@@ -361,7 +361,7 @@
 
 
 bool NodeXQType::is_subtype(
-    const TypeManager* tm, 
+    const TypeManager* tm,
     const NodeXQType& supertype,
     const QueryLoc& loc) const
 {
@@ -443,7 +443,7 @@
 
 
 bool NodeXQType::is_supertype(
-    const TypeManager* tm, 
+    const TypeManager* tm,
     const store::Item* subitem,
     const QueryLoc& loc) const
 {
@@ -488,14 +488,29 @@
     }
   }
 
-  if (m_node_kind != store::StoreConsts::elementNode && 
-      m_node_kind != store::StoreConsts::attributeNode)
+  // document-node( E ) matches any document node that contains exactly one element
+  // node, optionally accompanied by one or more comment and processing instruction
+  // nodes, if E is an ElementTest or SchemaElementTest that matches the element node.
+  bool is_element_test = (
+      m_node_kind == store::StoreConsts::documentNode &&
+      m_content_type != NULL &&
+      m_content_type->type_kind() == XQType::NODE_TYPE_KIND);
+
+  if (m_node_kind != store::StoreConsts::elementNode &&
+      m_node_kind != store::StoreConsts::attributeNode &&
+      !is_element_test)
     return true;
 
   if (m_content_type == NULL ||
       m_content_type->type_kind() == XQType::ANY_TYPE_KIND)
     return true;
 
+  if (is_element_test)
+  {
+    xqtref_t documentNodeType = tm->create_value_type(subitem, loc);
+    return TypeOps::is_subtype(tm, *documentNodeType, *this);
+  }
+
   xqtref_t subContentType = tm->create_named_type(subitem->getType(),
                                                   TypeConstants::QUANT_ONE,
                                                   loc,

=== modified file 'test/rbkt/Queries/CMakeLists.txt'
--- test/rbkt/Queries/CMakeLists.txt	2011-12-09 19:37:09 +0000
+++ test/rbkt/Queries/CMakeLists.txt	2011-12-15 13:37:29 +0000
@@ -210,7 +210,6 @@
 ####
 IF (FOUND_XQTS AND NOT ZORBA_TEST_W3C_TO_SUBMIT_RESULTS)
 
-  EXPECTED_FAILURE(test/rbkt/w3c_testsuite/XQuery/PathExpr/Steps/Steps-leading-lone-slash-8a 3408285)
   EXPECTED_FAILURE(test/rbkt/w3c_testsuite/XQuery/Functions/QNameFunc/NamespaceURIForPrefixFunc/K2-NamespaceURIForPrefixFunc-2 872732)
 
   IF(NOT ZORBA_WITH_BIG_INTEGER)

-- 
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