javax.persistence

Interface Subgraph

Type Parameters:

T - The type of the attribute.

public interface Subgraph

This type represents a subgraph for an attribute node that corresponds to a Managed Type. Using this class, an entity subgraph can be embedded within an EntityGraph.

Since:

Java Persistence 2.1

See Also:

EntityGraph, AttributeNode, NamedSubgraph

Method Summary

Modifier and Type	Method and Description
void	addAttributeNodes(Attribute<T,?>... attribute) Add one or more attribute nodes to the entity graph.
void	addAttributeNodes(String... attributeName) Add one or more attribute nodes to the entity graph.
Subgraph	addKeySubgraph(Attribute<T,X> attribute) Add a node to the graph that corresponds to a map key that is a managed type.
Subgraph	addKeySubgraph(Attribute<T,X> attribute, Class type) Add a node to the graph that corresponds to a map key that is a managed type with inheritance.
Subgraph	addKeySubgraph(String attributeName) Add a node to the graph that corresponds to a map key that is a managed type.
Subgraph	addKeySubgraph(String attributeName, Class type) Add a node to the graph that corresponds to a map key that is a managed type with inheritance.
Subgraph	addSubgraph(Attribute<T,X> attribute) Add a node to the graph that corresponds to a managed type.
Subgraph	addSubgraph(Attribute<T,X> attribute, Class type) Add a node to the graph that corresponds to a managed type with inheritance.
Subgraph	addSubgraph(String attributeName) Add a node to the graph that corresponds to a managed type.
Subgraph	addSubgraph(String attributeName, Class type) Add a node to the graph that corresponds to a managed type with inheritance.
List<AttributeNode>	getAttributeNodes() Return the attribute nodes corresponding to the attributes of this managed type that are included in the subgraph.
Class<T>	getClassType() Return the type for which this subgraph was defined.

Method Detail

addAttributeNodes

void addAttributeNodes(String... attributeName)

Add one or more attribute nodes to the entity graph.

Parameters:

attributeName - name of the attribute

Throws:

IllegalArgumentException - if the attribute is not an attribute of this managed type.

IllegalStateException - if the EntityGraph has been statically defined

addAttributeNodes

void addAttributeNodes(Attribute<T,?>... attribute)

Add one or more attribute nodes to the entity graph.

Parameters:

attribute - attribute

Throws:

IllegalStateException - if this EntityGraph has been statically defined

addSubgraph

 Subgraph addSubgraph(Attribute<T,X> attribute)

Add a node to the graph that corresponds to a managed type. This allows for construction of multi-node entity graphs that include related managed types.

Parameters:

attribute - attribute

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if the EntityGraph has been statically defined

addSubgraph

 Subgraph addSubgraph(Attribute<T,X> attribute,
                                      Class type)

Add a node to the graph that corresponds to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined for this node of the entity graph. Subclass subgraphs will automatically include the specified attributes of superclass subgraphs

Parameters:

attribute - attribute

type - entity subclass

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if this EntityGraph has been statically defined

addSubgraph

 Subgraph addSubgraph(String attributeName)

Add a node to the graph that corresponds to a managed type. This allows for construction of multi-node entity graphs that include related managed types.

Parameters:

attributeName - name of the attribute

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute is not an attribute of this managed type.

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if this EntityGraph has been statically defined

addSubgraph

 Subgraph addSubgraph(String attributeName,
                            Class type)

Add a node to the graph that corresponds to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined for this node of the entity graph. Subclass subgraphs will automatically include the specified attributes of superclass subgraphs

Parameters:

attributeName - name of the attribute

type - entity subclass

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute is not an attribute of this managed type.

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if this EntityGraph has been statically defined

addKeySubgraph

 Subgraph addKeySubgraph(Attribute<T,X> attribute)

Add a node to the graph that corresponds to a map key that is a managed type. This allows for construction of multinode entity graphs that include related managed types.

Parameters:

attribute - attribute

Returns:

subgraph for the key attribute

Throws:

IllegalArgumentException - if the attribute's target type is not a managed type entity

IllegalStateException - if this EntityGraph has been statically defined

addKeySubgraph

 Subgraph addKeySubgraph(Attribute<T,X> attribute,
                                         Class type)

Add a node to the graph that corresponds to a map key that is a managed type with inheritance. This allows for construction of multi-node entity graphs that include related managed types. Subclass subgraphs will automatically include the specified attributes of superclass subgraphs

Parameters:

attribute - attribute

type - entity subclass

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute's target type is not a managed type entity

IllegalStateException - if this EntityGraph has been statically defined

addKeySubgraph

 Subgraph addKeySubgraph(String attributeName)

Add a node to the graph that corresponds to a map key that is a managed type. This allows for construction of multi-node entity graphs that include related managed types.

Parameters:

attributeName - name of the attribute

Returns:

subgraph for the key attribute

Throws:

IllegalArgumentException - if the attribute is not an attribute of this entity.

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if this EntityGraph has been statically defined

addKeySubgraph

 Subgraph addKeySubgraph(String attributeName,
                               Class type)

Add a node to the graph that corresponds to a map key that is a managed type with inheritance. This allows for construction of multi-node entity graphs that include related managed types. Subclass subgraphs will include the specified attributes of superclass subgraphs

Parameters:

attributeName - name of the attribute

type - entity subclass

Returns:

subgraph for the attribute

Throws:

IllegalArgumentException - if the attribute is not an attribute of this entity.

IllegalArgumentException - if the attribute's target type is not a managed type

IllegalStateException - if this EntityGraph has been statically defined

getAttributeNodes

List<AttributeNode> getAttributeNodes()

Return the attribute nodes corresponding to the attributes of this managed type that are included in the subgraph.

Returns:

list of attribute nodes included in the subgraph or empty List if none have been defined

getClassType

Class<T> getClassType()

Return the type for which this subgraph was defined.

Returns:

managed type referenced by the subgraph