
The mapping in the Java programming language for the SQL type
ARRAY.
By default, an
Array value is a transaction-duration
reference to an SQL
ARRAY value. By default, an
Array
object is implemented using an SQL LOCATOR(array) internally, which
means that an
Array object contains a logical pointer
to the data in the SQL
ARRAY value rather
than containing the
ARRAY value's data.
The Array interface provides methods for bringing an SQL
ARRAY value's data to the client as either an array or a
ResultSet object.
If the elements of the SQL ARRAY
are a UDT, they may be custom mapped. To create a custom mapping,
a programmer must do two things:
- create a class that implements the
SQLData
interface for the UDT to be custom mapped.
- make an entry in a type map that contains
- the fully-qualified SQL type name of the UDT
- the
Class object for the class implementing
SQLData
When a type map with an entry for
the base type is supplied to the methods getArray
and getResultSet, the mapping
it contains will be used to map the elements of the ARRAY value.
If no type map is supplied, which would typically be the case,
the connection's type map is used by default.
If the connection's type map or a type map supplied to a method has no entry
for the base type, the elements are mapped according to the standard mapping.
All methods on the Array interface must be fully implemented if the
JDBC driver supports the data type.