Add REF CURSOR support. Result Set tidy ups. Renumber constants.

Author: Christopher Jones

lib/oracledb.js

@@ -31,15 +31,16 @@ try {
 
 var oracledb_ins = new oracledb.Oracledb();
 
-oracledb_ins.STRING  = 1;
-oracledb_ins.NUMBER  = 2;
-oracledb_ins.DATE    = 3;
+oracledb_ins.STRING  = 2001;
+oracledb_ins.NUMBER  = 2002;
+oracledb_ins.DATE    = 2003;
+oracledb_ins.CURSOR  = 2004;
 
-oracledb_ins.ARRAY   = 1;
-oracledb_ins.OBJECT  = 2;
+oracledb_ins.BIND_IN     = 3001;
+oracledb_ins.BIND_INOUT  = 3002;
+oracledb_ins.BIND_OUT    = 3003;
 
-oracledb_ins.BIND_IN     = 1;
-oracledb_ins.BIND_INOUT  = 2;
-oracledb_ins.BIND_OUT    = 3;
+oracledb_ins.ARRAY   = 4001;
+oracledb_ins.OBJECT  = 4002;
 
 module.exports = oracledb_ins;

src/dpi/include/dpiConn.h

@@ -67,7 +67,7 @@ class Conn
   virtual void action(const string &action) = 0;
 
                                 // methods
-  virtual Stmt* getStmt (const string &sql) = 0;
+  virtual Stmt* getStmt (const string &sql="") = 0;
 
   virtual void commit() = 0;
 

src/dpi/include/dpiStmt.h

@@ -86,6 +86,7 @@ typedef enum
   DpiClob = 112,
   DpiBlob = 113,
   DpiBfile = 114,
+  DpiRSet = 116,
   DpiYearMonth = 182,           /* internal only */
   DpiDaySecond = 183,           /* internal only */
   DpiTimestamp = 187,           /* internal only */

src/dpi/src/dpiConnImpl.cpp

@@ -414,7 +414,6 @@ Stmt* ConnImpl::getStmt (const string &sql)
 }
 
 
-
 /*****************************************************************************/
 /*
   DESCRIPTION

src/dpi/src/dpiStmtImpl.cpp

@@ -88,17 +88,27 @@ StmtImpl::StmtImpl (EnvImpl *env, OCIEnv *envh, ConnImpl *conn,
 
   try : conn_(conn), errh_(NULL), svch_(svch),
         stmth_(NULL), numCols_ (0),meta_(NULL), stmtType_ (DpiStmtUnknown),
-        isReturning_(false), isReturningSet_(false)
+        isReturning_(false), isReturningSet_(false), refCursor_(false)
 {
   // create an OCIError object for this execution
   ociCallEnv (OCIHandleAlloc ((void *)envh, (dvoid **)&errh_,
                                OCI_HTYPE_ERROR, 0, (dvoid **)0), envh);
 
-  // Prepare OCIStmt object with given sql statement.
-  ociCall (OCIStmtPrepare2 (svch_, &stmth_, errh_, (oratext *)sql.data(),
-                            (ub4)sql.length(), NULL, 0, OCI_NTV_SYNTAX,
-                            OCI_DEFAULT),
-           errh_);
+  if(!sql.empty())
+  {
+    // Prepare OCIStmt object with given sql statement.
+    ociCall (OCIStmtPrepare2 (svch_, &stmth_, errh_, (oratext *)sql.data(),
+                              (ub4)sql.length(), NULL, 0, OCI_NTV_SYNTAX,
+                              OCI_DEFAULT),
+             errh_);
+  }
+  else
+  {
+    //  to build empty stmt object used for ref cursors.
+    ociCall (OCIHandleAlloc ((void *)envh, (dvoid **)&stmth_,
+                             OCI_HTYPE_STMT,0, (dvoid **)0), errh_);
+    refCursor_ = true;
+  }
 }
 catch (...)
 {
@@ -240,7 +250,9 @@ void StmtImpl::bind (unsigned int pos, unsigned short type, void *buf,
   OCIBind *b = (OCIBind *)0;
 
   ociCall (DPIBINDBYPOS (stmth_, &b, errh_, pos,
-                         (cb ? NULL : buf), bufSize, type,
+                         (cb ? NULL : (type==DpiRSet) ? 
+                           (void *)&(((StmtImpl*)buf)->stmth_) : buf), 
+                         (type == DpiRSet) ? 0 : bufSize, type,
                          (cb ? NULL : ind),
                          (cb ? NULL : bufLen),
                          NULL, 0, NULL,
@@ -285,7 +297,9 @@ void StmtImpl::bind (const unsigned char *name, int nameLen,
   OCIBind *b = (OCIBind *)0;
 
   ociCall (DPIBINDBYNAME (stmth_, &b, errh_, name, nameLen,
-                          (cb ? NULL : buf), bufSize, type,
+                          (cb ? NULL : (type == DpiRSet) ?
+                            (void *)&((StmtImpl*)buf)->stmth_: buf), 
+                          (type == DpiRSet) ? 0 : bufSize, type,
                           (cb ? NULL : ind),
                           (cb ? NULL : bufLen),
                           NULL, 0, NULL,
@@ -518,7 +532,12 @@ void StmtImpl::cleanup ()
   }
   if ( stmth_)
   {
-    ociCall ( OCIStmtRelease (stmth_, errh_, NULL, 0, OCI_DEFAULT), errh_ );
+    // Release not called for ref cursor.
+    if ( refCursor_ )
+      OCIHandleFree ( stmth_, OCI_HTYPE_STMT );
+    else 
+      ociCall ( OCIStmtRelease (stmth_, errh_, NULL, 0, OCI_DEFAULT), errh_ );
+
     stmth_ = NULL;
   }
   if ( errh_)

src/dpi/src/dpiStmtImpl.h

@@ -112,7 +112,6 @@ class StmtImpl : public Stmt
                               dvoid **bufpp, ub4 **alenp, ub1 *piecep,
                               dvoid **indpp, ub2 **rcodepp );
 
-
 private:
   void cleanup ();
 
@@ -131,6 +130,7 @@ class StmtImpl : public Stmt
   DpiStmtType    stmtType_;        // Statement Type (Query, DML, ... )
   bool           isReturning_;     // Does the stmt has RETURNING INTO clause?
   bool           isReturningSet_;  // Has isReturning_ flag queried & set.
+  bool           refCursor_;       // refCursor or not.
 };