Package de.akquinet.jbosscc.guttenbase.statements

Class SplitByColumnSelectMinMaxStatementCreator

java.lang.Object

de.akquinet.jbosscc.guttenbase.statements.AbstractStatementCreator

de.akquinet.jbosscc.guttenbase.statements.AbstractSelectStatementCreator

de.akquinet.jbosscc.guttenbase.statements.SplitByColumnSelectMinMaxStatementCreator

public class SplitByColumnSelectMinMaxStatementCreator
extends AbstractSelectStatementCreator

Sometimes the amount of data exceeds any buffer. In these cases we need to split the data by some given range, usually the primary key. I.e., the data is read in chunks where these chunks are split using the ID column range of values.

Read minimum and maxim value of that column.

© 2012-2034 akquinet tech@spree

Hint is used by SplitColumnHint

Author:

M. Dahm

Field Summary

Fields inherited from class de.akquinet.jbosscc.guttenbase.statements.AbstractSelectStatementCreator

FROM

Fields inherited from class de.akquinet.jbosscc.guttenbase.statements.AbstractStatementCreator

_columnMapper, _connectorId, _connectorRepository, LOG

Constructor Summary

Constructors

Constructor	Description
SplitByColumnSelectMinMaxStatementCreator(ConnectorRepository connectorRepository, String connectorId)

Method Summary

Modifier and Type	Method	Description
protected String	createColumnClause(List<ColumnMetaData> columns)

Methods inherited from class de.akquinet.jbosscc.guttenbase.statements.AbstractSelectStatementCreator

createMappedSelectStatement, createOrderBy, createSelectStatement, createWhereClause

Methods inherited from class de.akquinet.jbosscc.guttenbase.statements.AbstractStatementCreator

getMappedTargetColumns

Methods inherited from class java.lang.Object

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

Constructor Detail

SplitByColumnSelectMinMaxStatementCreator

public SplitByColumnSelectMinMaxStatementCreator(ConnectorRepository connectorRepository,
                                                 String connectorId)

Method Detail

createColumnClause

protected String createColumnClause(List<ColumnMetaData> columns)

Overrides:

createColumnClause in class AbstractStatementCreator