Changes between Version 3 and Version 4 of FdoSchemaDeepCopy

Timestamp:

10/17/07 15:36:16 (17 years ago)

Author:

gregboone

Comment:

--

FdoSchemaDeepCopy

@@ -295 +295 @@
 }}}
 
-
+==== Copy Function ====
+
+The actual process of copying or cloning individual non SchemaElement objects within the FDO API shall be accomplished with the addition of a standard Copy method as opposed to a !DeepCopy method. 
+
+The following Copy method will be added to the set of FDO API classes’ listed n section 2.3.2.
+
+
+{{{
+    /// \brief
+    /// copy this instance of class Fdo[ClassName].
+    /// 
+    /// \return
+    /// Returns a newly created instance of class Fdo[ClassName]
+    /// 
+    FDO_API virtual Fdo[ClassName]* Copy( void );
+}}}
+
+The following list of classes will have a Copy function (As defined in section 2.3.1) added to their class definition.
+
+
+{{{
+    FdoCLOBValue
+    FdoComputedIdentifier
+    FdoComparisonCondition
+    FdoBinaryLogicalOperator
+    FdoBinaryExpression
+    FdoBLOBValue
+    FdoBooleanValue
+    FdoByteValue
+    FdoDataValue
+    FdoDataValueCollection
+    FdoDateTimeValue
+    FdoDecimalValue
+    FdoDistanceCondition
+    FdoDoubleValue
+    FdoExpression
+    FdoExpressionCollection
+    FdoFilter
+    FdoFunction
+    FdoGeometryValue
+    FdoGeometricCondition
+    FdoInt16Value
+    FdoInt32Value
+    FdoInt64Value
+    FdoIdentifier
+    FdoInCondition
+    FdoLogicalOperator
+    FdoNullCondition
+    FdoParameter
+    FdoPropertyValueConstraint
+    FdoPropertyValueConstraintRange
+    FdoPropertyValueConstraintList
+    FdoRasterDataModel
+    FdoSearchCondition
+    FdoSchemaAttributeDictionary
+    FdoSingleValue
+    FdoSpatialCondition
+    FdoStringValue      
+    FdoUnaryExpression
+    FdoUnaryLogicalOperator
+    FdoUniqueConstraint
+    FdoUniqueConstraintCollection
+    FdoValueExpression
+    FdoValueExpressionCollection
+}}}
+
+NOTE: This list may have to be expanded depending on additional requirements
+
+===== Example Implementation =====
+
+The following example demonstrates how the Copy method might be implemented for class FdoCLOBValue class.
+
+
+{{{
+FdoCLOBValue* FdoCLOBValue::Copy( void )
+{
+    FdoPtr<FdoCLOBValue> clone = FdoCLOBValue::Create();;
+    if (IsNull()) 
+    {
+        clone->SetNull();
+    }
+    else 
+    {
+        FdoPtr<FdoByteArray> sourceData = GetData();
+
+        FdoInt32 count = sourceData->GetCount()
+        FdoByteArray* ba = sourceData->GetData();
+
+        FdoPtr<FdoByteArray> clonedArray = FdoByteArray::Create(ba, count);
+        clone->SetData(clonedArray);
+    }
+
+    return FDO_SAFE_ADDREF(clone.p);
+}
+}}}
+