Interface Struct

All Known Implementing Classes:: SerialStruct

public interface Struct

The standard mapping in the Java programming language for an SQL structured type. A Struct object contains a value for each attribute of the SQL structured type that it represents. By default, an instance ofStruct is valid as long as the application has a reference to it.

All methods on the Struct interface must be fully implemented if the JDBC driver supports the data type.

Since:: 1.2

Method Summary

Modifier and Type	Method	Description
`Object[]`	`getAttributes()`	Produces the ordered values of the attributes of the SQL structured type that this `Struct` object represents.
`Object[]`	`getAttributes(Map<String,Class<?>> map)`	Produces the ordered values of the attributes of the SQL structured type that this `Struct` object represents.
`String`	`getSQLTypeName()`	Retrieves the SQL type name of the SQL structured type that this `Struct` object represents.

Method Details

getSQLTypeName

String getSQLTypeName() throws SQLException

Retrieves the SQL type name of the SQL structured type that this Struct object represents.

Returns:: the fully-qualified type name of the SQL structured type for which this Struct object is the generic representation
Throws:: SQLException - if a database access error occurs; SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since:: 1.2

getAttributes

Object[] getAttributes() throws SQLException

Produces the ordered values of the attributes of the SQL structured type that this Struct object represents. As individual attributes are processed, this method uses the type map associated with the connection for customizations of the type mappings. If there is no entry in the connection's type map that matches the structured type that an attribute represents, the driver uses the standard mapping.

Conceptually, this method calls the method getObject on each attribute of the structured type and returns a Java array containing the result.

Returns:: an array containing the ordered attribute values
Throws:: SQLException - if a database access error occurs; SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since:: 1.2

getAttributes

Object[] getAttributes(Map<String,Class<?>> map) throws SQLException

Produces the ordered values of the attributes of the SQL structured type that this Struct object represents. As individual attributes are processed, this method uses the given type map for customizations of the type mappings. If there is no entry in the given type map that matches the structured type that an attribute represents, the driver uses the standard mapping. This method never uses the type map associated with the connection.

Conceptually, this method calls the method getObject on each attribute of the structured type and returns a Java array containing the result.

Parameters:: map - a mapping of SQL type names to Java classes
Returns:: an array containing the ordered attribute values
Throws:: SQLException - if a database access error occurs; SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since:: 1.2

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.