org.rhq.server.metrics.migrator.datasources

Class ScrollableDataSource

java.lang.Object

org.rhq.server.metrics.migrator.datasources.ScrollableDataSource

All Implemented Interfaces:

ExistingDataSource

public class ScrollableDataSource
extends Object
implements ExistingDataSource

Author:

Stefan Negrea

Field Summary

Fields inherited from interface org.rhq.server.metrics.migrator.datasources.ExistingDataSource

TIMEOUT

Constructor Summary

Constructors

Constructor and Description
ScrollableDataSource(javax.persistence.EntityManager entityManager, DataMigrator.DatabaseType databaseType, String selectNativeQuery)
ScrollableDataSource(javax.persistence.EntityManager entityManager, DataMigrator.DatabaseType databaseType, String selectNativeQuery, int maxResults)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
List<Object[]>	getData(int fromIndex, int maxResults)
void	initialize()

Methods inherited from class java.lang.Object

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

Constructor Detail

ScrollableDataSource

public ScrollableDataSource(javax.persistence.EntityManager entityManager,
                    DataMigrator.DatabaseType databaseType,
                    String selectNativeQuery)

ScrollableDataSource

public ScrollableDataSource(javax.persistence.EntityManager entityManager,
                    DataMigrator.DatabaseType databaseType,
                    String selectNativeQuery,
                    int maxResults)

Method Detail

getData

public List<Object[]> getData(int fromIndex,
                     int maxResults)
                       throws Exception

Specified by:

getData in interface ExistingDataSource

Throws:

Exception

initialize

public void initialize()

Specified by:

initialize in interface ExistingDataSource

close

public void close()

Specified by:

close in interface ExistingDataSource