isql
Interface IExpression

All Known Subinterfaces:

ISimpleExpression, IWhereExpression

All Known Implementing Classes:

AggregateFunction, CaseExpression, ColumnExpressionByGroup, ColumnExpressionSimple, ConstantExpression, DoubleExpression, UnaryExpression

public interface IExpression

An expression is something that returns an array

Author:

SHZ Sep 27, 2007

Method Summary

java.util.Set<ColumnKey>	getInvolvedColumns() Returns the table columns named in the expression
ITypedValue	getResult() Get the result of the expression (can be a constant or an array)

Method Detail

getResult

ITypedValue getResult()
                      throws ISQLException

Get the result of the expression (can be a constant or an array)

Returns:

the result

Throws:

ISQLException

getInvolvedColumns

java.util.Set<ColumnKey> getInvolvedColumns()

Returns the table columns named in the expression

Returns:

the identifiers of the columns