org.apache.ignite.internal.processors.query.h2.sys.view

Interface SqlSystemView

All Known Implementing Classes:

SqlAbstractLocalSystemView, SqlAbstractSystemView, SqlSystemViewBaselineNodes, SqlSystemViewCacheGroups, SqlSystemViewCacheGroupsIOStatistics, SqlSystemViewCaches, SqlSystemViewIndexes, SqlSystemViewNodeAttributes, SqlSystemViewNodeMetrics, SqlSystemViewNodes, SqlSystemViewSchemas, SqlSystemViewTables

public interface SqlSystemView

SQL system view.

Method Summary

Modifier and Type	Method and Description
boolean	canGetRowCount() Check if the row count can be retrieved quickly.
org.gridgain.internal.h2.table.Column[]	getColumns() Gets columns.
String	getCreateSQL() Gets SQL script for creating table.
String	getDescription() Gets description.
String[]	getIndexes() Gets indexed column names.
long	getRowCount() Gets row count for this view (or approximated row count, if real value can't be calculated quickly).
long	getRowCountApproximation() Gets approximated row count (required to build execution plan).
Iterator<org.gridgain.internal.h2.result.Row>	getRows(org.gridgain.internal.h2.engine.Session ses, org.gridgain.internal.h2.result.SearchRow first, org.gridgain.internal.h2.result.SearchRow last) Gets view content.
String	getTableName() Gets table name.
boolean	isDistributed()

Method Detail

getTableName

String getTableName()

Gets table name.

getDescription

String getDescription()

Gets description.

getColumns

org.gridgain.internal.h2.table.Column[] getColumns()

Gets columns.

getIndexes

String[] getIndexes()

Gets indexed column names.

getRows

Iterator<org.gridgain.internal.h2.result.Row> getRows(org.gridgain.internal.h2.engine.Session ses,
                                                      org.gridgain.internal.h2.result.SearchRow first,
                                                      org.gridgain.internal.h2.result.SearchRow last)

Gets view content.

Parameters:

ses - Session.

first - First.

last - Last.

getRowCount

long getRowCount()

Gets row count for this view (or approximated row count, if real value can't be calculated quickly).

getRowCountApproximation

long getRowCountApproximation()

Gets approximated row count (required to build execution plan).

canGetRowCount

boolean canGetRowCount()

Check if the row count can be retrieved quickly.

Returns:

true if it can

getCreateSQL

String getCreateSQL()

Gets SQL script for creating table.

isDistributed

boolean isDistributed()

Returns:

True if view is distributed.