Package org.h2.expression.function

Class TableInfoFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1_2

org.h2.expression.function.Function1_2

org.h2.expression.function.TableInfoFunction

All Implemented Interfaces:

NamedExpression, HasSQL, Typed

public final class TableInfoFunction
extends Function1_2

A table information function.

Field Summary

Fields

Modifier and Type	Field	Description
static int	DISK_SPACE_USED	DISK_SPACE_USED() (non-standard).
static int	ESTIMATED_ENVELOPE	ESTIMATED_ENVELOPE().
private int	function
private static java.lang.String[]	NAMES

Fields inherited from class org.h2.expression.Operation1_2

left, right, type

Fields inherited from class org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

Fields inherited from interface org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Constructor	Description
TableInfoFunction(Expression arg1, Expression arg2, int function)

Method Summary

Modifier and Type	Method	Description
java.lang.String	getName()	Get the name.
Value	getValue(SessionLocal session, Value v1, Value v2)	Returns the value of this function.
boolean	isEverything(ExpressionVisitor visitor)	Check if this expression and all sub-expressions can fulfill a criteria.
Expression	optimize(SessionLocal session)	Try to optimize the expression.

Methods inherited from class org.h2.expression.function.Function1_2

getUnenclosedSQL, getValue

Methods inherited from class org.h2.expression.Operation1_2

getCost, getSubexpression, getSubexpressionCount, getType, mapColumns, setEvaluatable, updateAggregate

Methods inherited from class org.h2.expression.Expression

addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.util.HasSQL

getTraceSQL

Field Detail

DISK_SPACE_USED

public static final int DISK_SPACE_USED

DISK_SPACE_USED() (non-standard).

See Also:

Constant Field Values

ESTIMATED_ENVELOPE

public static final int ESTIMATED_ENVELOPE

ESTIMATED_ENVELOPE().

See Also:

Constant Field Values

NAMES

private static final java.lang.String[] NAMES

function

private final int function

Constructor Detail

TableInfoFunction

public TableInfoFunction(Expression arg1,
                         Expression arg2,
                         int function)

Method Detail

getValue

public Value getValue(SessionLocal session,
                      Value v1,
                      Value v2)

Description copied from class: Function1_2

Returns the value of this function.

Overrides:

getValue in class Function1_2

Parameters:

session - the session

v1 - the value of first argument

v2 - the value of second argument, or null

Returns:

the resulting value

optimize

public Expression optimize(SessionLocal session)

Description copied from class: Expression

Try to optimize the expression.

Specified by:

optimize in class Expression

Parameters:

session - the session

Returns:

the optimized expression

isEverything

public boolean isEverything(ExpressionVisitor visitor)

Description copied from class: Expression

Check if this expression and all sub-expressions can fulfill a criteria. If any part returns false, the result is false.

Overrides:

isEverything in class Operation1_2

Parameters:

visitor - the visitor

Returns:

if the criteria can be fulfilled

getName

public java.lang.String getName()

Description copied from interface: NamedExpression

Get the name.

Returns:

the name in uppercase