org.hibernate.ejb.criteria.expression.function

Interface FunctionExpression<T>

Type Parameters:

T - The type of the function result.

All Superinterfaces:

javax.persistence.criteria.Expression<T>, javax.persistence.criteria.Selection<T>, javax.persistence.TupleElement<T>

All Known Implementing Classes:

AbsFunction, AggregationFunction, AggregationFunction.AVG, AggregationFunction.COUNT, AggregationFunction.GREATEST, AggregationFunction.LEAST, AggregationFunction.MAX, AggregationFunction.MIN, AggregationFunction.SUM, BasicFunctionExpression, CastFunction, CurrentDateFunction, CurrentTimeFunction, CurrentTimestampFunction, LengthFunction, LocateFunction, LowerFunction, ParameterizedFunctionExpression, SqrtFunction, SubstringFunction, TrimFunction, UpperFunction

public interface FunctionExpression<T>
extends javax.persistence.criteria.Expression<T>

Contract for expressions which model a SQL function call.

Author:

Steve Ebersole

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getFunctionName() Retrieve the name of the function.
boolean	isAggregation() Is this function a value aggregator (like a COUNT or MAX function e.g.)?

Methods inherited from interface javax.persistence.criteria.Expression

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Method Detail

getFunctionName

java.lang.String getFunctionName()

Retrieve the name of the function.

Returns:

The function name.

isAggregation

boolean isAggregation()

Is this function a value aggregator (like a COUNT or MAX function e.g.)?

Returns:

True if this functions does aggregation.