org.apache.derbyTesting.perf.clients

Class SingleRecordUpdateClient

java.lang.Object

org.apache.derbyTesting.perf.clients.SingleRecordUpdateClient

All Implemented Interfaces:

Client

public class SingleRecordUpdateClient
extends java.lang.Object
implements Client

Client which updates a single record at a time on tables generated by SingleRecordFiller. Each time the client's doWork() method is called, it will pick one of the tables randomly, and update the text column of one random record in that table.

Field Summary

Fields

Modifier and Type	Field and Description
private java.sql.Connection	conn
private int	dataType
private boolean	noIndex
private java.sql.PreparedStatement[]	pss
private java.util.Random	r
private boolean	secondaryIndex
private int	tableSize

Constructor Summary

Constructors

Constructor and Description
SingleRecordUpdateClient(int records, int tables) Construct a new single-record update client.
SingleRecordUpdateClient(int records, int tables, int type, boolean secIndex, boolean nonIndexed) Construct a new single-record update client.

Method Summary

Modifier and Type	Method and Description
void	doWork() Perform the work for a single iteration of the test (typically a single transaction).
void	init(java.sql.Connection c) Initialize this client (typically prepare the statements needed in the doWork() method).
void	printReport(java.io.PrintStream out) Print a report from the test run.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

conn

private java.sql.Connection conn

pss

private final java.sql.PreparedStatement[] pss

r

private final java.util.Random r

tableSize

private final int tableSize

dataType

private final int dataType

secondaryIndex

private final boolean secondaryIndex

noIndex

private final boolean noIndex

Constructor Detail

SingleRecordUpdateClient

public SingleRecordUpdateClient(int records,
                                int tables)

Construct a new single-record update client.

Parameters:

records - the number of records in each table in the test

tables - the number of tables in the test

SingleRecordUpdateClient

public SingleRecordUpdateClient(int records,
                                int tables,
                                int type,
                                boolean secIndex,
                                boolean nonIndexed)

Construct a new single-record update client.

Parameters:

records - the number of records in each table in the test

tables - the number of tables in the test

Method Detail

init

public void init(java.sql.Connection c)
          throws java.sql.SQLException

Description copied from interface: Client

Initialize this client (typically prepare the statements needed in the doWork() method).

Specified by:

init in interface Client

Parameters:

c - a connection which can be used by this client

Throws:

java.sql.SQLException - if a database error occurs

doWork

public void doWork()
            throws java.sql.SQLException

Description copied from interface: Client

Perform the work for a single iteration of the test (typically a single transaction).

Specified by:

doWork in interface Client

Throws:

java.sql.SQLException - if a database error occurs

printReport

public void printReport(java.io.PrintStream out)

Description copied from interface: Client

Print a report from the test run.

Specified by:

printReport in interface Client

Parameters:

out - stream to print the report to