org.apache.openjpa.persistence.criteria
Class RootImpl<X>

java.lang.Object
  org.apache.openjpa.persistence.criteria.SelectionImpl<X>
      org.apache.openjpa.persistence.criteria.ExpressionImpl<X>
          org.apache.openjpa.persistence.criteria.PathImpl<Z,X>
              org.apache.openjpa.persistence.criteria.FromImpl<X,X>
                  org.apache.openjpa.persistence.criteria.RootImpl<X>

Type Parameters:

X - the type of the entity

All Implemented Interfaces:

Expression<X>, FetchParent<X,X>, From<X,X>, Path<X>, Root<X>, Selection<X>, TupleElement<X>, CriteriaExpression

 class RootImpl<X>
extends FromImpl<X,X>
implements Root<X>

A root path without a parent.

Since:

2.0.0

Author:

Pinaki Poddar, Fay Wang

Field Summary

Fields inherited from class org.apache.openjpa.persistence.criteria.PathImpl

_member, _parent

Constructor Summary

RootImpl(Types.Entity<X> type)

Method Summary

void	addToContext(ExpressionFactory factory, MetamodelImpl model, CriteriaQueryImpl<?> q)
StringBuilder	asValue(AliasContext q) Get a string representation of this node as a value in the context of the given query.
StringBuilder	asVariable(AliasContext q) Get a string representation of this node as a variable in the context of the given query.
EntityType<X>	getModel() Returns the bindable object that corresponds to the path expression.
Expression	toKernelExpression(ExpressionFactory factory, CriteriaQueryImpl<?> c) Convert this path to a kernel expression.
Value	toValue(ExpressionFactory factory, CriteriaQueryImpl<?> c) Convert this path to a kernel path value.

Methods inherited from class org.apache.openjpa.persistence.criteria.FromImpl

acceptVisit, assertJoinable, fetch, fetch, fetch, fetch, fetch, fetch, getCorrelationParent, getFetches, getJoins, getType, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet

Methods inherited from class org.apache.openjpa.persistence.criteria.PathImpl

get, get, get, get, getCorrelatedJoin, getCorrelatedPath, getCorrelatedRoot, getEmbeddedFieldMetaData, getInnermostMember, getInnermostParentPath, getMember, getParentPath, inSubquery, isCorrelated, setCorrelatedPath, traversePath, type

Methods inherited from class org.apache.openjpa.persistence.criteria.ExpressionImpl

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

Methods inherited from class org.apache.openjpa.persistence.criteria.SelectionImpl

alias, asProjection, assertValidName, getAlias, getCompoundSelectionItems, getJavaType, isAliased, isAutoAliased, isCompoundSelection, setAutoAlias

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.From

getCorrelationParent, getJoins, isCorrelated, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet

Methods inherited from interface javax.persistence.criteria.Path

get, get, get, get, getParentPath, type

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

Methods inherited from interface javax.persistence.criteria.FetchParent

fetch, fetch, fetch, fetch, fetch, fetch, getFetches

Constructor Detail

RootImpl

public RootImpl(Types.Entity<X> type)

Method Detail

getModel

public EntityType<X> getModel()

Description copied from class: PathImpl

Returns the bindable object that corresponds to the path expression.

Specified by:

getModel in interface Path<X>

Specified by:

getModel in interface Root<X>

Overrides:

getModel in class PathImpl<X,X>

addToContext

public void addToContext(ExpressionFactory factory,
                         MetamodelImpl model,
                         CriteriaQueryImpl<?> q)

toValue

public Value toValue(ExpressionFactory factory,
                     CriteriaQueryImpl<?> c)

Convert this path to a kernel path value.

Overrides:

toValue in class PathImpl<X,X>

Parameters:

factory - creates the kernel expression

c - the query definition context of this expression

Returns:

an equivalent kernel value

toKernelExpression

public Expression toKernelExpression(ExpressionFactory factory,
                                     CriteriaQueryImpl<?> c)

Convert this path to a kernel expression.

Overrides:

toKernelExpression in class ExpressionImpl<X>

Parameters:

factory - creates the kernel expression

c - the query definition context of this expression

Returns:

an equivalent kernel expression

asValue

public StringBuilder asValue(AliasContext q)

Description copied from interface: CriteriaExpression

Get a string representation of this node as a value in the context of the given query.

Specified by:

asValue in interface CriteriaExpression

Overrides:

asValue in class PathImpl<X,X>

asVariable

public StringBuilder asVariable(AliasContext q)

Description copied from interface: CriteriaExpression

Get a string representation of this node as a variable in the context of the given query.

Specified by:

asVariable in interface CriteriaExpression

Overrides:

asVariable in class PathImpl<X,X>