org.batoo.jpa.core.impl.criteria

Class AbstractSelection<X>

java.lang.Object

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

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

Type Parameters:

X - the type of the selection item

All Implemented Interfaces:

Selection<X>, TupleElement<X>

Direct Known Subclasses:

AbstractExpression, CompoundSelectionImpl

public abstract class AbstractSelection<X>
extends TupleElementImpl<X>
implements Selection<X>

The definition of an item that is to be returned in a query result.

Since:

$version

Author:

hceylan

Constructor Summary

Constructors

Constructor and Description
AbstractSelection(Class<X> javaType)

Method Summary

Methods

Modifier and Type	Method and Description
Selection<X>	alias(String alias)
abstract String	generateJpqlSelect(AbstractCriteriaQueryImpl<?> query, boolean selected) Returns the JPQL select fragment.
abstract String	generateSqlSelect(AbstractCriteriaQueryImpl<?> query, boolean selected) Returns the SQL select fragment.
String	getAlias()
List<Selection<?>>	getCompoundSelectionItems()
abstract String[]	getSqlRestrictionFragments(BaseQueryImpl<?> query) Returns the SQL restriction fragments.
abstract X	handle(QueryImpl<?> query, SessionImpl session, ResultSet row) Handles the row.
boolean	isCompoundSelection()
boolean	isEntityList() Returns if the selection is comprises of entities only.

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.TupleElement

getJavaType

Constructor Detail

AbstractSelection

public AbstractSelection(Class<X> javaType)

Parameters:

javaType - the java type

Since:

$version

Method Detail

alias

public Selection<X> alias(String alias)

Specified by:

alias in interface Selection<X>

generateJpqlSelect

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

Returns the JPQL select fragment.

Parameters:

query - the criteria query

selected - if the selection is selected

Returns:

the JPQL select fragment

Since:

$version

generateSqlSelect

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

Returns the SQL select fragment.

Parameters:

query - the query

selected - if the selection is selected

Returns:

the SQL select fragment

Since:

$version

getAlias

public String getAlias()

Specified by:

getAlias in interface TupleElement<X>

getCompoundSelectionItems

public List<Selection<?>> getCompoundSelectionItems()

Specified by:

getCompoundSelectionItems in interface Selection<X>

getSqlRestrictionFragments

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

Returns the SQL restriction fragments.

Parameters:

query - the query

Returns:

the SQL restriction fragments

Since:

$version

handle

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

Handles the row.

Parameters:

query - the query

session - the session

row - the row

Returns:

the managed instance

Throws:

SQLException - thrown in case of an underlying SQL Error

Since:

$version

isCompoundSelection

public boolean isCompoundSelection()

Specified by:

isCompoundSelection in interface Selection<X>

isEntityList

public boolean isEntityList()

Returns if the selection is comprises of entities only.

Returns:

true if the selection is comprises of entities only, false otherwise

Since:

$version