GetValue(OracleConnection, object, string)

This method gets the attributes or elements from the specified Oracle UDT, using the specified attribute name.

Declaration

public static object GetValue(OracleConnection con, object Udt, string attrName);

Parameters

con

An OracleConnection instance.
Udt

An object of an Oracle UDT.
attrName

The case-sensitive name of the attribute to be retrieved. Null is specified for retrieving collection elements from a Custom Type that represents an Oracle Collection.

Return Value

An object representing the returned attribute or collection elements.

Exceptions

ArgumentException - The specified name is not a valid attribute name.

Remarks

The IOracleCustomType.ToCustomObject method invokes OracleUdt.GetValue method passing it the con and Udt parameters. The OracleUdt.GetValue method returns these types of object:

Oracle Object Type

For a Custom Type that represents an Oracle Object Type, the type returned for a specified attribute name is the type of the member in the custom class or struct that is mapped to the attribute using the OracleObjectMappingAttribute object.
Oracle Collection Type

For a Custom Type that represents an Oracle Collection Type, the type returned is the type of the member in the custom class or struct to which the OracleArrayMappingAttribute object is applied.

In the case of NULL attribute values, the appropriate null representation of the type is returned. For example, for attributes that are represented as Custom Types and Provider Specific Types, the static Null property of the type is returned. For attributes that are represented as Nullable types, for example, System.String and System.Array Types, null is returned, and for all other remaining built-in types such as Int32 and DateTime DBNull.Value is returned.