org.batoo.jpa.core.impl.criteria.expression

Class AggregationExpression<T>

java.lang.Object

org.batoo.jpa.core.impl.criteria.TupleElementImpl<X>

org.batoo.jpa.core.impl.criteria.AbstractSelection<T>

org.batoo.jpa.core.impl.criteria.expression.AbstractExpression<T>

org.batoo.jpa.core.impl.criteria.expression.AggregationExpression<T>

Type Parameters:

T - the type of the expression

All Implemented Interfaces:

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

public class AggregationExpression<T>
extends AbstractExpression<T>

The expression for aggregate functions

Since:

$version

Author:

hceylan

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AggregationExpression.AggregationFunctionType

Constructor Summary

Constructors

Constructor and Description
AggregationExpression(AggregationExpression.AggregationFunctionType type, javax.persistence.criteria.Expression<?> x)

Method Summary

Methods

Modifier and Type	Method and Description
String	generateJpqlRestriction(BaseQueryImpl<?> query) Returns the JPQL where fragment.
String	generateJpqlSelect(AbstractCriteriaQueryImpl<?> query, boolean selected) Returns the JPQL select fragment.
String	generateSqlSelect(AbstractCriteriaQueryImpl<?> query, boolean selected) Returns the SQL select fragment.
String[]	getSqlRestrictionFragments(BaseQueryImpl<?> query) Returns the SQL restriction fragments.
T	handle(QueryImpl<?> query, SessionImpl session, ResultSet row) Handles the row.

Methods inherited from class org.batoo.jpa.core.impl.criteria.expression.AbstractExpression

as, getConverter, in, in, in, in, isNotNull, isNull, setConverter

Methods inherited from class org.batoo.jpa.core.impl.criteria.AbstractSelection

alias, getAlias, getCompoundSelectionItems, isCompoundSelection, isEntityList

Methods inherited from class org.batoo.jpa.core.impl.criteria.TupleElementImpl

getJavaType

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Constructor Detail

AggregationExpression

public AggregationExpression(AggregationExpression.AggregationFunctionType type,
                     javax.persistence.criteria.Expression<?> x)

Parameters:

type - the type of the function

x - the first parameter

Since:

$version

Method Detail

generateJpqlRestriction

public String generateJpqlRestriction(BaseQueryImpl<?> query)

Returns the JPQL where fragment.

Specified by:

generateJpqlRestriction in class AbstractExpression<T>

Parameters:

query - the query

Returns:

the JPQL where fragment

generateJpqlSelect

public String generateJpqlSelect(AbstractCriteriaQueryImpl<?> query,
                        boolean selected)

Returns the JPQL select fragment.

Specified by:

generateJpqlSelect in class AbstractSelection<T>

Parameters:

query - the criteria query

selected - if the selection is selected

Returns:

the JPQL select fragment

generateSqlSelect

public String generateSqlSelect(AbstractCriteriaQueryImpl<?> query,
                       boolean selected)

Returns the SQL select fragment.

Specified by:

generateSqlSelect in class AbstractSelection<T>

Parameters:

query - the query

selected - if the selection is selected

Returns:

the SQL select fragment

getSqlRestrictionFragments

public String[] getSqlRestrictionFragments(BaseQueryImpl<?> query)

Returns the SQL restriction fragments.

Specified by:

getSqlRestrictionFragments in class AbstractSelection<T>

Parameters:

query - the query

Returns:

the SQL restriction fragments

handle

public T handle(QueryImpl<?> query,
       SessionImpl session,
       ResultSet row)
         throws SQLException

Handles the row.

Specified by:

handle in class AbstractSelection<T>

Parameters:

query - the query

session - the session

row - the row

Returns:

the managed instance

Throws:

SQLException - thrown in case of an underlying SQL Error