com.sun.jdo.spi.persistence.support.sqlstore.sql.generator

Class VerificationSelectPlan

java.lang.Object

com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.QueryPlan

com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.SelectQueryPlan

com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.VerificationSelectPlan

public class VerificationSelectPlan
extends SelectQueryPlan

Implements Select Plan for verifying clean VC instanses.

Author:

Mitesh Meswani

Field Summary

Fields inherited from class com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.SelectQueryPlan

constraint, MULTILEVEL_PREFETCH_PROPERTY, options, parentField, ST_C_BUILT, ST_OC_BUILT

Fields inherited from class com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.QueryPlan

ACT_DELETE, ACT_INSERT, ACT_NOOP, ACT_SELECT, ACT_UPDATE, action, config, messages, ST_BUILT, statements, status, store, tables

Constructor Summary

Constructors

Constructor and Description
VerificationSelectPlan(RetrieveDesc desc, SQLStoreManager store) Creates a new VerificationSelectQueryPlan.

Method Summary

Modifier and Type	Method and Description
Object	getResult(PersistenceManager pm, ResultSet resultData) Checks whether the resultset from a verification query contains atleast one row.
protected Statement	newStatement()
protected void	processFields() There are no real fields to be selected for verification query.

Methods inherited from class com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.SelectQueryPlan

addColumn, addJoinConstraint, addTable, build, getConstraint, newInstance, processConstraints, processOrderConstraints, processStatements

Methods inherited from class com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.QueryPlan

addQueryTable, addQueryTable, addQueryTables, addStatement, createStatement, findQueryTable, findQueryTable, getAction, getConfig, getStatement, getStatements

Methods inherited from class java.lang.Object

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

Constructor Detail

VerificationSelectPlan

public VerificationSelectPlan(RetrieveDesc desc,
                              SQLStoreManager store)

Creates a new VerificationSelectQueryPlan.

Parameters:

desc - The Retrieve descriptor holding constraints

store - Store manager executing the query.

Method Detail

processFields

protected void processFields()

There are no real fields to be selected for verification query. This method just adds the tables for the version field.

Overrides:

processFields in class SelectQueryPlan

newStatement

protected Statement newStatement()

Overrides:

newStatement in class SelectQueryPlan

getResult

public Object getResult(PersistenceManager pm,
                        ResultSet resultData)
                 throws SQLException

Checks whether the resultset from a verification query contains atleast one row.

Overrides:

getResult in class SelectQueryPlan

Parameters:

pm - This parameter is not used.

resultData - The resultset containing result from the verification query

Returns:

true if the resultset contains atleast one row false otherwise.

Throws:

SQLException