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## org.hibernate.ejb.criteria.path
Class AbstractPathImpl<X>

    java.lang.Object
      org.hibernate.ejb.criteria.AbstractNode
          org.hibernate.ejb.criteria.expression.AbstractTupleElement<X>
              org.hibernate.ejb.criteria.expression.SelectionImpl<T>
                  org.hibernate.ejb.criteria.expression.ExpressionImpl<X>
                      org.hibernate.ejb.criteria.path.AbstractPathImpl<X>

All Implemented Interfaces:
  Serializable, Expression<X>, Path<X>, Selection<X>, 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 Path<X>, PathImplementor<X>, Serializable

Convenience base class for various `Path` implementors.

See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.hibernate.ejb.criteria.ParameterContainer
`ParameterContainer.Helper`

Constructor Summary
`AbstractPathImpl(CriteriaBuilderImpl criteriaBuilder, Class<X> javaType, PathSource pathSource)` Constructs a basic path instance.

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

Methods inherited from class org.hibernate.ejb.criteria.expression.ExpressionImpl
`as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull`

Methods inherited from class org.hibernate.ejb.criteria.expression.SelectionImpl
`alias, getCompoundSelectionItems, getValueHandlers, isCompoundSelection`

Methods inherited from class org.hibernate.ejb.criteria.expression.AbstractTupleElement
`forceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAlias`

Methods inherited from class org.hibernate.ejb.criteria.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.ejb.criteria.PathImplementor
`getAttribute`

Methods inherited from interface org.hibernate.ejb.criteria.ExpressionImplementor
`asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString`

Methods inherited from interface org.hibernate.ejb.criteria.SelectionImplementor
`getValueHandlers`

Methods inherited from interface org.hibernate.ejb.criteria.TupleElementImplementor
`getValueHandler`

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,
                            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 `Path<X>`

### type

    public Expression<Class<? extends X>> type()

  Specified by:
    `type` in interface `Path<X>`

### getPathIdentifier

    public String getPathIdentifier()

  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 RuntimeException illegalDereference()

### unknownAttribute

    protected final RuntimeException unknownAttribute(String attributeName)

### resolveCachedAttributePath

    protected final Path resolveCachedAttributePath(String attributeName)

### registerAttributePath

    protected final void registerAttributePath(String attributeName,
                                               Path path)

### get

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

  Specified by:
    `get` in interface `Path<X>`

### get

    public <E,C extends Collection<E>> Expression<C> get(PluralAttribute<X,C,E> attribute)

  Specified by:
    `get` in interface `Path<X>`

### get

    public <K,V,M extends Map<K,V>> Expression<M> get(MapAttribute<X,K,V> attribute)

  Specified by:
    `get` in interface `Path<X>`

### get

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

  Specified by:
    `get` in interface `Path<X>`

### locateAttribute

    protected final Attribute locateAttribute(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:
    `IllegalArgumentException` - If no such attribute exists

### locateAttributeInternal

    protected abstract Attribute locateAttributeInternal(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:
    `IllegalArgumentException` - If no such attribute exists

### registerParameters

    public void registerParameters(ParameterRegistry registry)

  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(CriteriaQueryCompiler.RenderingContext renderingContext)

  Specified by:
    `prepareAlias` in interface `PathSource<X>`

### render

    public String render(CriteriaQueryCompiler.RenderingContext renderingContext)

  Specified by:
    `render` in interface `Renderable`

### renderProjection

    public String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext)

  Specified by:
    `renderProjection` in interface `Renderable`

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