Implement SQL type parsing and C++ type mappings for Oracle

1 files changed, 107 insertions, 0 deletions

diff --git a/odb/relational/oracle/context.hxx b/odb/relational/oracle/context.hxx
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+++ b/odb/relational/oracle/context.hxx
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+// file      : odb/relational/oracle/context.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license   : ODB NCUEL; see accompanying LICENSE file
+
+#ifndef ODB_RELATIONAL_ORACLE_CONTEXT_HXX
+#define ODB_RELATIONAL_ORACLE_CONTEXT_HXX
+
+#include <vector>
+
+#include <odb/relational/context.hxx>
+
+namespace relational
+{
+  namespace oracle
+  {
+    struct sql_type
+    {
+      // Keep the order in each block of types.
+      //
+      enum core_type
+      {
+        // Numeric types.
+        //
+        NUMBER,
+        FLOAT,
+
+        // Floating point types.
+        //
+        BINARY_FLOAT,
+        BINARY_DOUBLE,
+
+        // Data-time types.
+        //
+        DATE,
+        TIMESTAMP,
+
+        // String and binary types.
+        //
+        CHAR,
+        NCHAR,
+        VARCHAR2,
+        NVARCHAR2,
+        RAW,
+
+        // LOB types.
+        //
+        BLOB,
+        CLOB,
+        NCLOB,
+
+        // Invalid type.
+        //
+        invalid
+      };
+
+      sql_type () :
+          type (invalid), range (false), scale (false), byte_semantics (true)
+      {
+      }
+
+      core_type type;
+      bool range;
+      unsigned short range_value; // Oracle max value is 4000.
+      bool scale;
+      short scale_value; // Oracle min value is -84. Max value is 127.
+      bool byte_semantics;
+    };
+
+    class context: public virtual relational::context
+    {
+    public:
+      sql_type const&
+      column_sql_type (semantics::data_member&,
+                       string const& key_prefix = string ());
+
+    protected:
+      virtual string
+      database_type_impl (semantics::type&, semantics::names*, bool);
+
+    public:
+      virtual
+      ~context ();
+
+      context ();
+      context (std::ostream&, semantics::unit&, options_type const&);
+
+      static context&
+      current ()
+      {
+        return *current_;
+      }
+
+    private:
+      static context* current_;
+
+    private:
+      struct data: base_context::data
+      {
+        data (std::ostream& os): base_context::data (os) {}
+      };
+      data* data_;
+    };
+  }
+}
+
+#endif // ODB_RELATIONAL_ORACLE_CONTEXT_HXX