Package org.glassfish.jersey.message.filtering.spi

Class AbstractObjectProvider<T>

java.lang.Object

org.glassfish.jersey.message.filtering.spi.AbstractObjectProvider<T>

Type Parameters:

T - representation of entity data filtering requested by provider.

All Implemented Interfaces:

ObjectGraphTransformer<T>, ObjectProvider<T>

Direct Known Subclasses:

JacksonObjectProvider, ObjectGraphProvider

public abstract class AbstractObjectProvider<T>
extends java.lang.Object
implements ObjectProvider<T>, ObjectGraphTransformer<T>

Common implementation of object provider and object graph transformer.

Extensions of this class must provide a type of entity-filtering object (via generic type parameter) the requesting provider (e.g. message body worker) is familiar with and an implementation of ObjectGraphTransformer.transform(ObjectGraph) method for this type.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	AbstractObjectProvider.EntityContext	Class to be used as a key in cache (EntityContext -> filtering object) when processing similar requests.

Field Summary

Fields

Modifier and Type	Field	Description
private EntityInspector	entityInspector
private com.google.common.cache.Cache<AbstractObjectProvider.EntityContext,T>	filteringObjects
private EntityGraphProvider	graphProvider
private static int	PROVIDER_CACHE_SIZE
private ScopeProvider	scopeProvider

Constructor Summary

Constructors

Constructor	Description
AbstractObjectProvider()

Method Summary

Modifier and Type	Method	Description
private T	createFilteringObject(java.lang.Class<?> entityClass, java.util.Set<java.lang.String> filteringScopes, boolean forWriter)	Create entity-filtering object after this object has not been found in the cache.
private java.lang.annotation.Annotation[]	getEntityAnnotations(java.lang.annotation.Annotation[] annotations)	Get entity annotations passed to request/response.
private T	getFilteringObject(java.lang.Class<?> entityClass, boolean forWriter, java.lang.annotation.Annotation... annotations)
T	getFilteringObject(java.lang.reflect.Type genericType, boolean forWriter, java.lang.annotation.Annotation... annotations)	Get reader/writer entity-filtering object for given type.
protected java.util.Set<java.lang.String>	immutableSetOf(java.util.Set<java.lang.String> set, java.lang.String item)	A helper method for a creation of an immutable set based on a provided set together with a given item.
protected java.lang.String	subgraphIdentifier(java.lang.Class<?> parent, java.lang.String field, java.lang.Class<?> fieldClass)	Creates a string identifier of a sub-graph.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.glassfish.jersey.message.filtering.spi.ObjectGraphTransformer

transform

Field Detail

PROVIDER_CACHE_SIZE

private static final int PROVIDER_CACHE_SIZE

See Also:

Constant Field Values

filteringObjects

private final com.google.common.cache.Cache<AbstractObjectProvider.EntityContext,T> filteringObjects

scopeProvider

@Inject
private ScopeProvider scopeProvider

entityInspector

@Inject
private EntityInspector entityInspector

graphProvider

@Inject
private EntityGraphProvider graphProvider

Constructor Detail

AbstractObjectProvider

public AbstractObjectProvider()

Method Detail

getFilteringObject

public final T getFilteringObject(java.lang.reflect.Type genericType,
                                  boolean forWriter,
                                  java.lang.annotation.Annotation... annotations)

Description copied from interface: ObjectProvider

Get reader/writer entity-filtering object for given type.

Specified by:

getFilteringObject in interface ObjectProvider<T>

Parameters:

genericType - type for which the object is requested.

forWriter - flag to determine whether to create object for reading/writing purposes.

annotations - entity annotations to determine the runtime scope.

Returns:

entity-filtering object.

getFilteringObject

private T getFilteringObject(java.lang.Class<?> entityClass,
                             boolean forWriter,
                             java.lang.annotation.Annotation... annotations)

getEntityAnnotations

private java.lang.annotation.Annotation[] getEntityAnnotations(java.lang.annotation.Annotation[] annotations)

Get entity annotations passed to request/response. This method filters annotations that are proxy instances (proxy annotations are taken from resource method and passed in this list).

Parameters:

annotations - annotations obtained from provider.

Returns:

annoations passed to request/response.

createFilteringObject

private T createFilteringObject(java.lang.Class<?> entityClass,
                                java.util.Set<java.lang.String> filteringScopes,
                                boolean forWriter)

Create entity-filtering object after this object has not been found in the cache.

Parameters:

entityClass - entity class the entity-filtering object should be created for.

filteringScopes - entity-filtering scopes to create the entity-filtering object for.

forWriter - flag determining whether the class should be examined for reader or writer.

Returns:

entity-filtering object.

immutableSetOf

protected java.util.Set<java.lang.String> immutableSetOf(java.util.Set<java.lang.String> set,
                                                         java.lang.String item)

A helper method for a creation of an immutable set based on a provided set together with a given item.

Parameters:

set - The set to create the immutable set from.

item - The item to add to the set before it's made immutable.

Returns:

The immutable set from given set and item.

subgraphIdentifier

protected java.lang.String subgraphIdentifier(java.lang.Class<?> parent,
                                              java.lang.String field,
                                              java.lang.Class<?> fieldClass)

Creates a string identifier of a sub-graph.

Parameters:

parent - The parent class.

field - The field name.

fieldClass - The class of the field.

Returns:

The string identifier of the sub-graph.