org.hibernate.query.criteria.internal.path

Class AbstractPathImpl<X>

java.lang.Object

org.hibernate.query.criteria.internal.AbstractNode

org.hibernate.query.criteria.internal.expression.AbstractTupleElement<X>

org.hibernate.query.criteria.internal.expression.SelectionImpl<T>

org.hibernate.query.criteria.internal.expression.ExpressionImpl<X>

org.hibernate.query.criteria.internal.path.AbstractPathImpl<X>

All Implemented Interfaces:

java.io.Serializable, javax.persistence.criteria.Expression<X>, javax.persistence.criteria.Path<X>, javax.persistence.criteria.Selection<X>, javax.persistence.TupleElement<X>, ExpressionImplementor<X>, ParameterContainer, PathImplementor<X>, PathSource<X>, Renderable, SelectionImplementor<X>, TupleElementImplementor<X>

Direct Known Subclasses:

AbstractFromImpl, MapKeyHelpers.MapKeyPath, MapKeyHelpers.MapKeySource, PluralAttributePath, SingularAttributePath

public abstract class AbstractPathImpl<X>
extends ExpressionImpl<X>
implements javax.persistence.criteria.Path<X>, PathImplementor<X>, java.io.Serializable

Convenience base class for various Path implementations.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.hibernate.query.criteria.internal.ParameterContainer

ParameterContainer.Helper

Constructor Summary

Constructors

Constructor and Description
AbstractPathImpl(CriteriaBuilderImpl criteriaBuilder, java.lang.Class<X> javaType, PathSource pathSource) Constructs a basic path instance.

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	canBeDereferenced()
<K,V,M extends java.util.Map<K,V>> javax.persistence.criteria.Expression<M>	get(javax.persistence.metamodel.MapAttribute<X,K,V> attribute)
<E,C extends java.util.Collection<E>> javax.persistence.criteria.Expression<C>	get(javax.persistence.metamodel.PluralAttribute<X,C,E> attribute)
<Y> javax.persistence.criteria.Path<Y>	get(javax.persistence.metamodel.SingularAttribute<? super X,Y> attribute)
<Y> javax.persistence.criteria.Path<Y>	get(java.lang.String attributeName)
PathSource<?>	getParentPath()
java.lang.String	getPathIdentifier() Get the string representation of this path as a navigation from one of the queries identification variables
PathSource	getPathSource()
protected PathSource	getPathSourceForSubPaths()
protected java.lang.RuntimeException	illegalDereference()
protected javax.persistence.metamodel.Attribute	locateAttribute(java.lang.String attributeName) Get the attribute by name from the underlying model.
protected abstract javax.persistence.metamodel.Attribute	locateAttributeInternal(java.lang.String attributeName) Get the attribute by name from the underlying model.
void	prepareAlias(RenderingContext renderingContext)
protected void	registerAttributePath(java.lang.String attributeName, javax.persistence.criteria.Path path)
void	registerParameters(ParameterRegistry registry) Register any parameters contained within this query component with the given registry.
java.lang.String	render(RenderingContext renderingContext) Render clause
protected javax.persistence.criteria.Path	resolveCachedAttributePath(java.lang.String attributeName)
javax.persistence.criteria.Expression<java.lang.Class<? extends X>>	type()
protected java.lang.RuntimeException	unknownAttribute(java.lang.String attributeName)

Methods inherited from class org.hibernate.query.criteria.internal.expression.ExpressionImpl

as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull

Methods inherited from class org.hibernate.query.criteria.internal.expression.SelectionImpl

alias, getCompoundSelectionItems, getValueHandlers, isCompoundSelection

Methods inherited from class org.hibernate.query.criteria.internal.expression.AbstractTupleElement

forceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAlias

Methods inherited from class org.hibernate.query.criteria.internal.AbstractNode

criteriaBuilder

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.query.criteria.internal.PathImplementor

getAttribute, treatAs

Methods inherited from interface org.hibernate.query.criteria.internal.ExpressionImplementor

asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString

Methods inherited from interface org.hibernate.query.criteria.internal.SelectionImplementor

getValueHandlers

Methods inherited from interface org.hibernate.query.criteria.internal.TupleElementImplementor

getValueHandler

Methods inherited from interface org.hibernate.query.criteria.internal.Renderable

renderGroupBy, renderProjection

Methods inherited from interface javax.persistence.criteria.Path

getModel

Methods inherited from interface javax.persistence.criteria.Expression

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Constructor Detail

AbstractPathImpl

public AbstractPathImpl(CriteriaBuilderImpl criteriaBuilder,
                        java.lang.Class<X> javaType,
                        PathSource pathSource)

Constructs a basic path instance.

Parameters:

criteriaBuilder - The criteria builder

javaType - The java type of this path

pathSource - The source (or origin) from which this path originates

Method Detail

getPathSource

public PathSource getPathSource()

getParentPath

public PathSource<?> getParentPath()

Specified by:

getParentPath in interface javax.persistence.criteria.Path<X>

type

public javax.persistence.criteria.Expression<java.lang.Class<? extends X>> type()

Specified by:

type in interface javax.persistence.criteria.Path<X>

getPathIdentifier

public java.lang.String getPathIdentifier()

Description copied from interface: PathSource

Get the string representation of this path as a navigation from one of the queries identification variables

Specified by:

getPathIdentifier in interface PathSource<X>

Returns:

The path's identifier.

canBeDereferenced

protected abstract boolean canBeDereferenced()

illegalDereference

protected final java.lang.RuntimeException illegalDereference()

unknownAttribute

protected final java.lang.RuntimeException unknownAttribute(java.lang.String attributeName)

resolveCachedAttributePath

protected final javax.persistence.criteria.Path resolveCachedAttributePath(java.lang.String attributeName)

registerAttributePath

protected final void registerAttributePath(java.lang.String attributeName,
                                           javax.persistence.criteria.Path path)

get

public <Y> javax.persistence.criteria.Path<Y> get(javax.persistence.metamodel.SingularAttribute<? super X,Y> attribute)

Specified by:

get in interface javax.persistence.criteria.Path<X>

getPathSourceForSubPaths

protected PathSource getPathSourceForSubPaths()

get

public <E,C extends java.util.Collection<E>> javax.persistence.criteria.Expression<C> get(javax.persistence.metamodel.PluralAttribute<X,C,E> attribute)

Specified by:

get in interface javax.persistence.criteria.Path<X>

get

public <K,V,M extends java.util.Map<K,V>> javax.persistence.criteria.Expression<M> get(javax.persistence.metamodel.MapAttribute<X,K,V> attribute)

Specified by:

get in interface javax.persistence.criteria.Path<X>

get

public <Y> javax.persistence.criteria.Path<Y> get(java.lang.String attributeName)

Specified by:

get in interface javax.persistence.criteria.Path<X>

locateAttribute

protected final javax.persistence.metamodel.Attribute locateAttribute(java.lang.String attributeName)

Get the attribute by name from the underlying model. This allows subclasses to define exactly how the attribute is derived.

Parameters:

attributeName - The name of the attribute to locate

Returns:

The attribute; should never return null.

Throws:

java.lang.IllegalArgumentException - If no such attribute exists

locateAttributeInternal

protected abstract javax.persistence.metamodel.Attribute locateAttributeInternal(java.lang.String attributeName)

Get the attribute by name from the underlying model. This allows subclasses to define exactly how the attribute is derived. Called from locateAttribute(java.lang.String) which also applies nullness checking for proper error reporting.

Parameters:

attributeName - The name of the attribute to locate

Returns:

The attribute; may be null.

Throws:

java.lang.IllegalArgumentException - If no such attribute exists

registerParameters

public void registerParameters(ParameterRegistry registry)

Description copied from interface: ParameterContainer

Register any parameters contained within this query component with the given registry.

Specified by:

registerParameters in interface ParameterContainer

Parameters:

registry - The parameter registry with which to register.

prepareAlias

public void prepareAlias(RenderingContext renderingContext)

Specified by:

prepareAlias in interface PathSource<X>

render

public java.lang.String render(RenderingContext renderingContext)

Description copied from interface: Renderable

Render clause

Specified by:

render in interface Renderable

Parameters:

renderingContext - context

Returns:

rendered expression