Type Parameters:

T - The type of the root entity.
```
public interface EntityGraph<T>
```
This type represents the root of an entity graph that will be used as a template to define the attribute nodes and boundaries of a graph of entities and entity relationships. The root must be an entity type.
The methods to add subgraphs implicitly create the corresponding attribute nodes as well; such attribute nodes should not be redundantly specified.

Since:

Java Persistence 2.1

See Also:

AttributeNode, Subgraph, NamedEntityGraph

Method Summary

All Methods Instance Methods Abstract Methods
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.
`<X> Subgraph<X>`	`addKeySubgraph(Attribute<T,X> attribute)` Add a node to the graph that corresponds to a map key that is a managed type.
`<X> Subgraph<? extends X>`	`addKeySubgraph(Attribute<T,X> attribute, Class<? extends X> type)` Add a node to the graph that corresponds to a map key that is a managed type with inheritance.
`<X> Subgraph<X>`	`addKeySubgraph(String attributeName)` Add a node to the graph that corresponds to a map key that is a managed type.
`<X> Subgraph<X>`	`addKeySubgraph(String attributeName, Class<X> type)` Add a node to the graph that corresponds to a map key that is a managed type with inheritance.
`<T> Subgraph<? extends T>`	`addSubclassSubgraph(Class<? extends T> type)` Add additional attributes to this entity graph that correspond to attributes of subclasses of this EntityGraph's entity type.
`<X> Subgraph<X>`	`addSubgraph(Attribute<T,X> attribute)` Add a node to the graph that corresponds to a managed type.
`<X> Subgraph<? extends X>`	`addSubgraph(Attribute<T,X> attribute, Class<? extends X> type)` Add a node to the graph that corresponds to a managed type with inheritance.
`<X> Subgraph<X>`	`addSubgraph(String attributeName)` Add a node to the graph that corresponds to a managed type.
`<X> Subgraph<X>`	`addSubgraph(String attributeName, Class<X> type)` Add a node to the graph that corresponds to a managed type with inheritance.
`List<AttributeNode<?>>`	`getAttributeNodes()` Return the attribute nodes of this entity that are included in the entity graph.
`String`	`getName()` Return the name of a named EntityGraph (an entity graph defined by means of the `NamedEntityGraph` annotation, XML descriptor element, or added by means of the `addNamedEntityGraph` method.

Eerste pagina van API Java Inhoudsopgave Haut

- Method Detail
  - getName
```
String getName()
```
    Return the name of a named EntityGraph (an entity graph defined by means of the NamedEntityGraph annotation, XML descriptor element, or added by means of the addNamedEntityGraph method. Returns null if the EntityGraph is not a named EntityGraph.
  - 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 entity.
    
    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 the EntityGraph has been statically defined
  - addSubgraph
```
<X> Subgraph<X> 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
```
<X> Subgraph<? extends X> addSubgraph(Attribute<T,X> attribute,
                                      Class<? extends X> 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 the EntityGraph has been statically defined
  - addSubgraph
```
<X> Subgraph<X> 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 entity.
    
    IllegalArgumentException - if the attribute's target type is not a managed type
    
    IllegalStateException - if the EntityGraph has been statically defined
  - addSubgraph
```
<X> Subgraph<X> addSubgraph(String attributeName,
                            Class<X> 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
```
<X> Subgraph<X> 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 multi-node 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 an entity
    
    IllegalStateException - if this EntityGraph has been statically defined
  - addKeySubgraph
```
<X> Subgraph<? extends X> addKeySubgraph(Attribute<T,X> attribute,
                                         Class<? extends X> 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:
    
    attribute - attribute
    
    type - entity subclass
    
    Returns:
    
    subgraph for the key attribute
    
    Throws:
    
    IllegalArgumentException - if the attribute's target type is not an entity
    
    IllegalStateException - if this EntityGraph has been statically defined
  - addKeySubgraph
```
<X> Subgraph<X> 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 an entity
    
    IllegalStateException - if this EntityGraph has been statically defined
  - addKeySubgraph
```
<X> Subgraph<X> addKeySubgraph(String attributeName,
                               Class<X> 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:
    
    attributeName - name of the attribute
    
    type - entity subclass
    
    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
  - addSubclassSubgraph
```
<T> Subgraph<? extends T> addSubclassSubgraph(Class<? extends T> type)
```
    Add additional attributes to this entity graph that correspond to attributes of subclasses of this EntityGraph's entity type. Subclass subgraphs will automatically include the specified attributes of superclass subgraphs.
    
    Parameters:
    
    type - entity subclass
    
    Returns:
    
    subgraph for the subclass
    
    Throws:
    
    IllegalArgumentException - if the type is not an entity type
    
    IllegalStateException - if the EntityGraph has been statically defined
  - getAttributeNodes
```
List<AttributeNode<?>> getAttributeNodes()
```
    Return the attribute nodes of this entity that are included in the entity graph.
    
    Returns:
    
    attribute nodes for the annotated entity type or empty list if none have been defined

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Document heeft de 11/06/2005 gemaakt, de laatste keer de 18/08/2025 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-javaee-rf-javax/persistence/EntityGraph.html

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Referenties

Manuel PHP : https://docs.oracle.com, EntityGraph (Java(TM) EE 7 Specification APIs)

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Interface EntityGraph<T>

Method Summary

Method Detail

getName

addAttributeNodes

addAttributeNodes

addSubgraph

addSubgraph

addSubgraph

addSubgraph

addKeySubgraph

addKeySubgraph

addKeySubgraph

addKeySubgraph

addSubclassSubgraph

getAttributeNodes

Referenties