Top Description Fields Constructors Methods
org.h2.table

public Class DualTable

extends VirtualTable
Class Inheritance
Imports
org.h2.engine.Database, .SessionLocal, org.h2.index.DualIndex, .Index
The DUAL table for selects without a FROM clause.

Field Summary

Modifier and TypeField and Description
public static final String
NAME

The name of the range table.

Constructor Summary

AccessConstructor and Description
public
DualTable(Database
the database
database)

Create a new range with the given start and end expressions.

Method Summary

Modifier and TypeMethod and Description
public boolean
canGetRowCount(SessionLocal
the session
session)

Implements abstract org.h2.table.Table.canGetRowCount.

Check if the row count can be retrieved quickly.

public long
getMaxDataModificationId()

Implements abstract org.h2.table.Table.getMaxDataModificationId.

Get the last data modification id.

public long
getRowCount(SessionLocal
the session
session)

Implements abstract org.h2.table.Table.getRowCount.

Get the row count for this table.

public long
getRowCountApproximation(SessionLocal
the session
session)

Implements abstract org.h2.table.Table.getRowCountApproximation.

Get the approximated row count for this table.

public Index
getScanIndex(SessionLocal
the session
session)

Implements abstract org.h2.table.Table.getScanIndex.

Get the scan index to iterate through all rows.

public StringBuilder
getSQL(StringBuilder
string builder
builder, int
formatting flags
sqlFlags)

Overrides org.h2.table.VirtualTable.getSQL.

Implements org.h2.util.HasSQL.getSQL.

Appends the SQL statement of this object to the specified builder.

public TableType
getTableType()

Overrides org.h2.table.VirtualTable.getTableType.

Get the table type name

public boolean
isDeterministic()

Implements abstract org.h2.table.Table.isDeterministic.

Check if the table is deterministic.

Inherited from org.h2.table.VirtualTable:
addIndexaddRowcanDropcanReferencecheckRenamecheckSupportAlterclosegetCreateSQLgetIndexesisInsertableremoveRowtruncate

Field Detail

NAMEback to summary
public static final String NAME

The name of the range table.

Constructor Detail

DualTableback to summary
public DualTable(Database database)

Create a new range with the given start and end expressions.

Parameters
database:Database

the database

Method Detail

canGetRowCountback to summary
public boolean canGetRowCount(SessionLocal session)

Implements abstract org.h2.table.Table.canGetRowCount.

Doc from org.h2.table.Table.canGetRowCount.

Check if the row count can be retrieved quickly.

Parameters
session:SessionLocal

the session

Returns:boolean

true if it can

Annotations
@Override
getMaxDataModificationIdback to summary
public long getMaxDataModificationId()

Implements abstract org.h2.table.Table.getMaxDataModificationId.

Doc from org.h2.table.Table.getMaxDataModificationId.

Get the last data modification id.

Returns:long

the modification id

Annotations
@Override
getRowCountback to summary
public long getRowCount(SessionLocal session)

Implements abstract org.h2.table.Table.getRowCount.

Doc from org.h2.table.Table.getRowCount.

Get the row count for this table.

Parameters
session:SessionLocal

the session

Returns:long

the row count

Annotations
@Override
getRowCountApproximationback to summary
public long getRowCountApproximation(SessionLocal session)

Implements abstract org.h2.table.Table.getRowCountApproximation.

Doc from org.h2.table.Table.getRowCountApproximation.

Get the approximated row count for this table.

Parameters
session:SessionLocal

the session

Returns:long

the approximated row count

Annotations
@Override
getScanIndexback to summary
public Index getScanIndex(SessionLocal session)

Implements abstract org.h2.table.Table.getScanIndex.

Doc from org.h2.table.Table.getScanIndex.

Get the scan index to iterate through all rows.

Parameters
session:SessionLocal

the session

Returns:Index

the index

Annotations
@Override
getSQLback to summary
public StringBuilder getSQL(StringBuilder builder, int sqlFlags)

Overrides org.h2.table.VirtualTable.getSQL.

Implements org.h2.util.HasSQL.getSQL.

Doc from org.h2.util.HasSQL.getSQL.

Appends the SQL statement of this object to the specified builder.

Parameters
builder:StringBuilder

string builder

sqlFlags:int

formatting flags

Returns:StringBuilder

the specified string builder

Annotations
@Override
getTableTypeback to summary
public TableType getTableType()

Overrides org.h2.table.VirtualTable.getTableType.

Doc from org.h2.table.Table.getTableType.

Get the table type name

Returns:TableType

the table type name

Annotations
@Override
isDeterministicback to summary
public boolean isDeterministic()

Implements abstract org.h2.table.Table.isDeterministic.

Doc from org.h2.table.Table.isDeterministic.

Check if the table is deterministic.

Returns:boolean

true if it is

Annotations
@Override