com.holonplatform.datastore.jdbc.examples

Class ExampleJdbcDatastoreFunction.IfNull<T>

java.lang.Object

com.holonplatform.datastore.jdbc.examples.ExampleJdbcDatastoreFunction.IfNull<T>

All Implemented Interfaces:

com.holonplatform.core.Expression, com.holonplatform.core.query.QueryExpression<T>, com.holonplatform.core.query.QueryFunction<T,T>, com.holonplatform.core.query.QueryProjection<T>, com.holonplatform.core.TypedExpression<T>

Enclosing class:

ExampleJdbcDatastoreFunction

public class ExampleJdbcDatastoreFunction.IfNull<T>
extends Object
implements com.holonplatform.core.query.QueryFunction<T,T>

Nested Class Summary

Nested classes/interfaces inherited from interface com.holonplatform.core.query.QueryFunction

com.holonplatform.core.query.QueryFunction.Avg, com.holonplatform.core.query.QueryFunction.Count, com.holonplatform.core.query.QueryFunction.Max<T>, com.holonplatform.core.query.QueryFunction.Min<T>, com.holonplatform.core.query.QueryFunction.NoArgQueryFunction<T>, com.holonplatform.core.query.QueryFunction.PropertyQueryFunction<T,A>, com.holonplatform.core.query.QueryFunction.Sum<T extends Number>

Nested classes/interfaces inherited from interface com.holonplatform.core.Expression

com.holonplatform.core.Expression.ExpressionResolverFunction<E extends com.holonplatform.core.Expression,R extends com.holonplatform.core.Expression>, com.holonplatform.core.Expression.InvalidExpressionException

Constructor Summary

Constructors

Constructor and Description
IfNull(com.holonplatform.core.query.QueryExpression<T> nullableValue, T fallbackValue)
IfNull(com.holonplatform.core.TypedExpression<T> nullableValue, com.holonplatform.core.TypedExpression<T> fallbackValue)

Method Summary

Modifier and Type	Method and Description
List<com.holonplatform.core.TypedExpression<? extends T>>	getExpressionArguments()
Class<? extends T>	getType()
void	validate()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.holonplatform.core.query.QueryFunction

avg, count, currentDate, currentLocalDate, currentLocalDateTime, currentTimestamp, day, hour, lower, max, min, month, sum, upper, year

Methods inherited from interface com.holonplatform.core.query.QueryExpression

between, count, eq, eq, goe, goe, gt, gt, in, in, in, isNotNull, isNull, loe, loe, lt, lt, max, min, neq, neq, nin, nin, nin

Methods inherited from interface com.holonplatform.core.query.QueryProjection

bean, constant, countAll, path, propertySet, propertySet

Methods inherited from interface com.holonplatform.core.TypedExpression

getTemporalType, isCollectionExpression, isConverterExpression

Constructor Detail

IfNull

public IfNull(com.holonplatform.core.TypedExpression<T> nullableValue,
              com.holonplatform.core.TypedExpression<T> fallbackValue)

IfNull

public IfNull(com.holonplatform.core.query.QueryExpression<T> nullableValue,
              T fallbackValue)

Method Detail

getType

public Class<? extends T> getType()

Specified by:

getType in interface com.holonplatform.core.TypedExpression<T>

validate

public void validate()
              throws com.holonplatform.core.Expression.InvalidExpressionException

Specified by:

validate in interface com.holonplatform.core.Expression

Throws:

com.holonplatform.core.Expression.InvalidExpressionException

getExpressionArguments

public List<com.holonplatform.core.TypedExpression<? extends T>> getExpressionArguments()

Specified by:

getExpressionArguments in interface com.holonplatform.core.query.QueryFunction<T,T>