v1.1.0

include/xqilla/ast/OrderByTuple.hpp

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2001-2006
+ *     DecisionSoft Limited. All rights reserved.
+ * Copyright (c) 2004-2006
+ *     Progress Software Corporation. All rights reserved.
+ * Copyright (c) 2004-2006
+ *     Oracle. All rights reserved.
+ *
+ * See the file LICENSE for redistribution information.
+ *
+ * $Id: OrderByTuple.hpp,v 1.2 2007/08/16 13:08:26 jpcs Exp $
+ */
+
+#ifndef ORDERBYTUPLE_HPP
+#define ORDERBYTUPLE_HPP
+
+#include <xqilla/ast/TupleNode.hpp>
+#include <xqilla/ast/StaticAnalysis.hpp>
+
+class ASTNode;
+class Collation;
+
+class XQILLA_API OrderByTuple : public TupleNode
+{
+public:
+  enum Modifiers {
+    ASCENDING      = 0x0,
+    DESCENDING     = 0x1,
+
+    EMPTY_GREATEST = 0x0,
+    EMPTY_LEAST    = 0x2,
+
+    STABLE         = 0x0,
+    UNSTABLE       = 0x4,
+
+    DESCENDING_EMPTY_LEAST          = DESCENDING | EMPTY_LEAST,
+    DESCENDING_UNSTABLE             = DESCENDING | UNSTABLE,
+    EMPTY_LEAST_UNSTABLE            = EMPTY_LEAST | UNSTABLE,
+    DESCENDING_EMPTY_LEAST_UNSTABLE = DESCENDING | EMPTY_LEAST | UNSTABLE
+  };
+
+  OrderByTuple(TupleNode *parent, ASTNode *expr, int modifiers, Collation *collation, XPath2MemoryManager *mm);
+
+  ASTNode *getExpression() const { return expr_; }
+  void setExpression(ASTNode *expr) { expr_ = expr; }
+
+  Modifiers getModifiers() const { return modifiers_; }
+  Collation *getCollation() const { return collation_; }
+
+  void setUnstable() { modifiers_ = (Modifiers)(modifiers_ | UNSTABLE); }
+
+  const StaticAnalysis &getUsedSRC() const { return usedSrc_; }
+
+  virtual TupleNode *staticResolution(StaticContext *context);
+  virtual TupleNode *staticTypingSetup(StaticContext *context);
+  virtual TupleNode *staticTypingTeardown(StaticContext *context, StaticAnalysis &usedSrc);
+
+  virtual TupleResult::Ptr createResult(DynamicContext* context) const;
+
+private:
+  ASTNode *expr_;
+  Modifiers modifiers_;
+  Collation *collation_;
+  StaticAnalysis usedSrc_;
+};
+
+#endif