Package wt.query

Class ExistsExpression

java.lang.Object

wt.query.ExistsExpression

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, WhereExpression

public class ExistsExpression
extends Object
implements WhereExpression, Externalizable

This class represents an EXISTS expression in a WHERE clause. A StatementSpec instance is used for the subselect.

Supported API: true

Extendable: false

See Also:

• Serialized Form

Field Summary

Fields inherited from interface wt.query.WhereExpression

FROM_INDICIES

Constructor Summary

Constructors

Constructor	Description
ExistsExpression(StatementSpec a_subSelect)	Supported API: true

Method Summary

Modifier and Type	Method	Description
int[]	getFromIndicies()	Gets the value of the attribute: fromIndicies; Indicies for all current expressions relative to a FromClause that will be used for validating and setting aliases when this compostie expression is appended to a statement.

Methods inherited from class java.lang.Object

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

Constructor Details

ExistsExpression

public ExistsExpression(StatementSpec a_subSelect)

Supported API: true

Parameters:

a_subSelect - Specifies instance to use for sub-select.

Method Details

getFromIndicies

public int[] getFromIndicies()

Gets the value of the attribute: fromIndicies; Indicies for all current expressions relative to a FromClause that will be used for validating and setting aliases when this compostie expression is appended to a statement.

Supported API: true

Specified by:

getFromIndicies in interface WhereExpression

Returns:

int[]