Commit after DDL statement. (firebird-sdbc)

Changes made in a DDL statement are only usable after a
commit in firebird, e.g. a created table won't appear etc.

Change-Id: I3b537f495b6bc96fa48ebc1a3e46205da60bb2d4

connectivity/source/drivers/firebird/DatabaseMetaData.cxx

@@ -393,20 +393,20 @@ sal_Bool SAL_CALL ODatabaseMetaData::dataDefinitionIgnoredInTransactions()
 sal_Bool SAL_CALL ODatabaseMetaData::dataDefinitionCausesTransactionCommit()
     throw(SQLException, RuntimeException)
 {
-    return sal_False;
+    return sal_True;
 }
 
 sal_Bool SAL_CALL ODatabaseMetaData::supportsDataManipulationTransactionsOnly()
     throw(SQLException, RuntimeException)
 {
-    return sal_False;
+    return sal_True;
 }
 
 sal_Bool SAL_CALL ODatabaseMetaData::
         supportsDataDefinitionAndDataManipulationTransactions()
     throw(SQLException, RuntimeException)
 {
-    return sal_True;
+    return sal_False;
 }
 //----- Transaction Support --------------------------------------------------
 sal_Bool SAL_CALL ODatabaseMetaData::supportsTransactions()

connectivity/source/drivers/firebird/Statement.cxx

@@ -139,7 +139,14 @@ uno::Reference< XResultSet > SAL_CALL OStatement::executeQuery(const OUString& s
 
     // TODO: deal with cleanup
 //    close();
+
     evaluateStatusVector(m_statusVector, sql, *this);
+
+    if (isDDLStatement(aStatementHandle))
+    {
+        m_pConnection->commit();
+    }
+
     return m_xResultSet;
 }
 

connectivity/source/drivers/firebird/StatementCommonBase.cxx

@@ -321,4 +321,32 @@ uno::Reference< ::com::sun::star::beans::XPropertySetInfo > SAL_CALL OStatementC
     return ::cppu::OPropertySetHelper::createPropertySetInfo(getInfoHelper());
 }
 
+bool OStatementCommonBase::isDDLStatement(isc_stmt_handle& aStatementHandle)
+    throw (SQLException)
+{
+    ISC_STATUS_ARRAY aStatusVector;
+    ISC_STATUS aErr;
+
+    char aInfoItems[] = {isc_info_sql_stmt_type};
+    char aResultsBuffer[8];
+
+    aErr = isc_dsql_sql_info(aStatusVector,
+                             &aStatementHandle,
+                             sizeof(aInfoItems),
+                             aInfoItems,
+                             sizeof(aResultsBuffer),
+                             aResultsBuffer);
+
+    if (!aErr && aResultsBuffer[0] == isc_info_sql_stmt_type)
+    {
+        const short aBytes = (short) isc_vax_integer(aResultsBuffer+1, 2);
+        const short aStatementType = (short) isc_vax_integer(aResultsBuffer+3, aBytes);
+        if (aStatementType == isc_info_sql_stmt_ddl)
+            return true;
+    }
+    evaluateStatusVector(aStatusVector,
+                         "isc_dsq_sql_info",
+                         *this);
+    return false;
+}
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

connectivity/source/drivers/firebird/StatementCommonBase.hxx

@@ -87,6 +87,9 @@ namespace connectivity
                                                   isc_stmt_handle& aStatementHandle,
                                                   XSQLDA*& pOutSqlda,
                                                   XSQLDA* pInSqlda=0);
+            bool isDDLStatement(isc_stmt_handle& aStatementHandle)
+                throw (::com::sun::star::sdbc::SQLException);
+
         public:
 
             ::cppu::OBroadcastHelper& rBHelper;