Class StatementKey

java.lang.Object

org.apache.derby.client.am.stmtcache.StatementKey

public class StatementKey
extends Object

A key representing a java.sql.PreparedStatement or a java.sql.CallableStatement.

The key takes a number of statement related attributes into account, and is used to insert and look up cached statement objects in the JDBC statement cache.

Key instances are created by a statement key factory.

See Also:

• StatementKeyFactory

Field Summary

Fields

Modifier and Type	Field	Description
private final int	autogeneratedKeys	Tells if the associated statement returns auto-generated keys.
private final int	concurrency	The result set concurrency for the statement.
private final int	holdability	Result set holdability for the statement.
private final boolean	isCallableStatement	Tells if the key represents a CallableStatement.
private final String	schema	The compilation schema for the statement.
private final String	sql	The SQL query of the statement.
private final int	type	The result set type for the statement.

Constructor Summary

Constructors

Constructor	Description
StatementKey(boolean isCallableStatement, String sql, String schema, int rsType, int rsConcurrency, int rsHoldability, int autogeneratedKeys)	Creates a statement key with all the common properties.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	hashCode()
String	toString()

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

isCallableStatement

private final boolean isCallableStatement

Tells if the key represents a CallableStatement.

sql

private final String sql

The SQL query of the statement.

schema

private final String schema

The compilation schema for the statement.

type

private final int type

The result set type for the statement.

concurrency

private final int concurrency

The result set concurrency for the statement.

holdability

private final int holdability

Result set holdability for the statement.

autogeneratedKeys

private final int autogeneratedKeys

Tells if the associated statement returns auto-generated keys.

Constructor Details

StatementKey

StatementKey(boolean isCallableStatement,
 String sql,
 String schema,
 int rsType,
 int rsConcurrency,
 int rsHoldability,
 int autogeneratedKeys)

Creates a statement key with all the common properties.

Parameters:

isCallableStatement - true is this is a key for a java.sql.CallableStatement

sql - SQL query string

schema - compilation schema

rsType - result set type

rsConcurrency - result set concurrency

rsHoldability - result set holdability

autogeneratedKeys - if auto-generated keys are returned

Throws:

IllegalArgumentException - if schema is null

Method Details

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object