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JavaTM 2 Platform Std. Ed. v1.3 |
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The mapping in the Java programming language of an SQL REF
value, which is a reference to an
SQL structured type value in the database.
SQL REF values are stored in a special table that contains
instances of a referenceable SQL structured type, and each REF
value is a unique identifier for one instance in that table.
An SQL REF value may be used in place of the
SQL structured type it references; it may be used as either a column value in a
table or an attribute value in a structured type.
Because an SQL REF value is a logical pointer to an
SQL structured type, a Ref object is by default also a logical
pointer; thus, retrieving an SQL REF value as
a Ref object does not materialize
the attributes of the structured type on the client.
A Ref object can be saved to persistent storage and is dereferenced by
passing it as a parameter to an SQL statement and executing the
statement.
The Ref interface is new in the JDBC 2.0 API.
Struct| Method Summary | |
String |
getBaseTypeName()
Retrieves the fully-qualified SQL name of the SQL structured type that this Ref object references. |
| Method Detail |
public String getBaseTypeName()
throws SQLException
Ref object references.SQLException - if a database access error occurs
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JavaTM 2 Platform Std. Ed. v1.3 |
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