Package cz.cvut.kbss.jopa.query.criteria.expressions

Class AbstractPathExpression<X>

java.lang.Object

cz.cvut.kbss.jopa.query.criteria.SelectionImpl<Y>

cz.cvut.kbss.jopa.query.criteria.expressions.AbstractExpression<X>

cz.cvut.kbss.jopa.query.criteria.expressions.AbstractPathExpression<X>

All Implemented Interfaces:

Expression<X>, Path<X>, Selection<X>, TupleElement<X>

Direct Known Subclasses:

PathImpl, RootImpl

public abstract class AbstractPathExpression<X>
extends AbstractExpression<X>
implements Path<X>

Field Summary

Fields

Modifier and Type	Field	Description
protected final Metamodel	metamodel
protected final AbstractPathExpression	pathSource

Fields inherited from class cz.cvut.kbss.jopa.query.criteria.expressions.AbstractExpression

cb, negated

Fields inherited from class cz.cvut.kbss.jopa.query.criteria.SelectionImpl

type

Constructor Summary

Constructors

Constructor	Description
AbstractPathExpression(Class<X> type, AbstractPathExpression pathSource, Metamodel metamodel, CriteriaBuilder cb)

Method Summary

Modifier and Type	Method	Description
<Y> Path<Y>	getAttr(SingularAttribute<? super X,Y> attribute)	Create a path corresponding to the referenced single-valued attribute.
<Y> Path<Y>	getAttr(String attributeName)	Create a path corresponding to the referenced attribute.
Path<?>	getParentPath()	Return the parent "node" in the path or null if no parent.

Methods inherited from class cz.cvut.kbss.jopa.query.criteria.expressions.AbstractExpression

in, in, isNegated, negate, setExpressionToQuery

Methods inherited from class cz.cvut.kbss.jopa.query.criteria.SelectionImpl

getAlias, getCompoundedSelectionItems, getJavaType, isCompoundedSelection

Methods inherited from class java.lang.Object

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

Methods inherited from interface cz.cvut.kbss.jopa.model.query.criteria.Expression

in, in

Methods inherited from interface cz.cvut.kbss.jopa.model.query.criteria.Selection

getCompoundedSelectionItems, isCompoundedSelection

Methods inherited from interface cz.cvut.kbss.jopa.model.query.TupleElement

getAlias, getJavaType

Field Details

pathSource

protected final AbstractPathExpression pathSource

metamodel

protected final Metamodel metamodel

Constructor Details

AbstractPathExpression

public AbstractPathExpression(Class<X> type,
 AbstractPathExpression pathSource,
 Metamodel metamodel,
 CriteriaBuilder cb)

Method Details

getAttr

public <Y> Path<Y> getAttr(String attributeName)

Description copied from interface: Path

Create a path corresponding to the referenced attribute.

Specified by:

getAttr in interface Path<X>

Parameters:

attributeName - name of the attribute

Returns:

path corresponding to the referenced attribute

getAttr

public <Y> Path<Y> getAttr(SingularAttribute<? super X,Y> attribute)

Description copied from interface: Path

Create a path corresponding to the referenced single-valued attribute.

Specified by:

getAttr in interface Path<X>

Parameters:

attribute - single-valued attribute

Returns:

path corresponding to the referenced attribute

getParentPath

public Path<?> getParentPath()

Description copied from interface: Path

Return the parent "node" in the path or null if no parent.

Specified by:

getParentPath in interface Path<X>

Returns:

parent