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

Class EntityConstantExpression<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.AbstractParameterExpressionImpl<T>

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

Type Parameters:

T - the type of the constant expression

All Implemented Interfaces:

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

public class EntityConstantExpression<T>
extends AbstractParameterExpressionImpl<T>

Expression for constants.

Since:

2.0.0

Author:

hceylan

Constructor Summary

Constructors

Constructor and Description
EntityConstantExpression(TypeImpl<T> type, T value)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	ensureAlias(BaseQueryImpl<?> query) Ensures the alias is generated.
String	generateJpqlRestriction(BaseQueryImpl<?> query) Returns the JPQL where fragment.
String	generateJpqlSelect(AbstractCriteriaQueryImpl<?> query, boolean selected) Returns the JPQL select fragment.
T	handle(QueryImpl<?> query, SessionImpl session, ResultSet row) Handles the row.
void	setParameter(MetamodelImpl metamodel, Connection connection, Object[] parameters, org.apache.commons.lang.mutable.MutableInt sqlIndex) Sets the parameters expanding if necessary.

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

ensureTypeResolved, generateSqlSelect, getExpandedCount, getSqlRestrictionFragments, setParameter

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

EntityConstantExpression

public EntityConstantExpression(TypeImpl<T> type,
                        T value)

Parameters:

type - the type of the constant.

value - the value

Since:

2.0.0

Method Detail

ensureAlias

protected void ensureAlias(BaseQueryImpl<?> query)

Ensures the alias is generated.

Specified by:

ensureAlias in class AbstractParameterExpressionImpl<T>

Parameters:

query - the query

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.

Overrides:

generateJpqlSelect in class AbstractParameterExpressionImpl<T>

Parameters:

query - the criteria query

selected - if the selection is selected

Returns:

the JPQL select fragment

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

setParameter

public void setParameter(MetamodelImpl metamodel,
                Connection connection,
                Object[] parameters,
                org.apache.commons.lang.mutable.MutableInt sqlIndex)

Sets the parameters expanding if necessary.

Parameters:

metamodel - the metamodel

connection - the connection

parameters - the SQL parameters

sqlIndex - the index corresponding to expanded SQL parameter

Since:

2.0.0