org.apache.openjpa.persistence.meta
Class MetamodelImpl

java.lang.Object
  org.apache.openjpa.persistence.meta.MetamodelImpl

All Implemented Interfaces:

Metamodel, Resolver

public class MetamodelImpl
extends Object
implements Metamodel, Resolver

Adapts JPA Metamodel to OpenJPA meta-data repository.

Author:

Pinaki Poddar

Constructor Summary

MetamodelImpl(MetaDataRepository repos)
Constructs a model with the current content of the supplied non-null repository.

Method Summary

(package private) static PluralAttribute.CollectionType	categorizeCollection(Class<?> cls)
Class	classForName(String name, String[] imports) Resolve the type represented by the given class name.
<X> EmbeddableType<X>	embeddable(Class<X> clazz) Return the metamodel embeddable type representing the embeddable class.
<X> EntityType<X>	entity(Class<X> clazz) Return the metamodel entity type representing the entity.
AggregateListener	getAggregateListener(String tag) Return the function listener for the given tag, or null if none.
OpenJPAConfiguration	getConfiguration() Return the OpenJPA configuration.
Set<EmbeddableType<?>>	getEmbeddables() Return the metamodel embeddable types.
Set<EntityType<?>>	getEntities() Return the metamodel entity types.
FilterListener	getFilterListener(String tag) Return the filter listener for the given tag, or null if none.
Set<ManagedType<?>>	getManagedTypes() Return the metamodel managed types.
(package private) ParameterizedType	getParameterizedType(Field mf) Gets the parameterized type of the given field after validating.
static Type.PersistenceType	getPersistenceType(ClassMetaData meta)
QueryContext	getQueryContext() The QueryContext for which this resolver was created
MetaDataRepository	getRepository()
<X> Type<X>	getType(Class<X> cls) Return the type representing the basic, entity, mapped superclass, or embeddable class.
<X> ManagedType<X>	managedType(Class<X> clazz) Return the metamodel managed type representing the entity, mapped superclass, or embeddable class.
<X> void	populate(AbstractManagedType<X> type) Populate the static fields of the canonical type.
(package private) String	toTypeName(Type type) Pretty prints a Type.
<T> Set<T>	unmodifiableSet(Collection<T> coll)
(package private) void	validate(Field metaField, FieldMetaData fmd) Validates the given field of the meta class matches the given FieldMetaData and
(package private) <X,Y> void	validate(Field mField, Members.Member<X,Y> member)

Methods inherited from class java.lang.Object

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

Constructor Detail

MetamodelImpl

public MetamodelImpl(MetaDataRepository repos)

Constructs a model with the current content of the supplied non-null repository.

Method Detail

getRepository

public MetaDataRepository getRepository()

embeddable

public <X> EmbeddableType<X> embeddable(Class<X> clazz)

Return the metamodel embeddable type representing the embeddable class.

Specified by:

embeddable in interface Metamodel

Parameters:

cls - the type of the represented embeddable class

Returns:

the metamodel embeddable type

Throws:

IllegalArgumentException - if not an embeddable class

entity

public <X> EntityType<X> entity(Class<X> clazz)

Return the metamodel entity type representing the entity.

Specified by:

entity in interface Metamodel

Parameters:

cls - the type of the represented entity

Returns:

the metamodel entity type

Throws:

IllegalArgumentException - if not an entity

getEmbeddables

public Set<EmbeddableType<?>> getEmbeddables()

Return the metamodel embeddable types.

Specified by:

getEmbeddables in interface Metamodel

Returns:

the metamodel embeddable types

getEntities

public Set<EntityType<?>> getEntities()

Return the metamodel entity types.

Specified by:

getEntities in interface Metamodel

Returns:

the metamodel entity types

getManagedTypes

public Set<ManagedType<?>> getManagedTypes()

Return the metamodel managed types.

Specified by:

getManagedTypes in interface Metamodel

Returns:

the metamodel managed types

managedType

public <X> ManagedType<X> managedType(Class<X> clazz)

Return the metamodel managed type representing the entity, mapped superclass, or embeddable class.

Specified by:

managedType in interface Metamodel

Parameters:

cls - the type of the represented managed class

Returns:

the metamodel managed type

Throws:

IllegalArgumentException - if not a managed class

getType

public <X> Type<X> getType(Class<X> cls)

Return the type representing the basic, entity, mapped superclass, or embeddable class. This method differs from #type(Class) as it also creates a basic or pesudo type for the given class argument if not already available in this receiver.

Parameters:

cls - the type of the represented managed class

Returns:

the metamodel managed type

Throws:

IllegalArgumentException - if not a managed class

getPersistenceType

public static Type.PersistenceType getPersistenceType(ClassMetaData meta)

unmodifiableSet

public <T> Set<T> unmodifiableSet(Collection<T> coll)

categorizeCollection

static PluralAttribute.CollectionType categorizeCollection(Class<?> cls)

populate

public <X> void populate(AbstractManagedType<X> type)

Populate the static fields of the canonical type.

getParameterizedType

ParameterizedType getParameterizedType(Field mf)

Gets the parameterized type of the given field after validating.

Returns:

the field's type as a parameterized type. If the field is not parameterized type (that can happen for non-canonical metamodel or weaving process introducing synthetic fields), returns null.

toTypeName

String toTypeName(Type type)

Pretty prints a Type.

validate

void validate(Field metaField,
              FieldMetaData fmd)

Validates the given field of the meta class matches the given FieldMetaData and

Type Parameters:

X -

Y -

Parameters:

mField -

member -

validate

<X,Y> void validate(Field mField,
                    Members.Member<X,Y> member)

classForName

public Class classForName(String name,
                          String[] imports)

Description copied from interface: Resolver

Resolve the type represented by the given class name. This will test the type against the namespace of the Query and the declared imports, and will properly handle primitives and java.lang types as well. Returns null if the name does not match a known type.

Specified by:

classForName in interface Resolver

getAggregateListener

public AggregateListener getAggregateListener(String tag)

Description copied from interface: Resolver

Return the function listener for the given tag, or null if none.

Specified by:

getAggregateListener in interface Resolver

getConfiguration

public OpenJPAConfiguration getConfiguration()

Description copied from interface: Resolver

Return the OpenJPA configuration.

Specified by:

getConfiguration in interface Resolver

getFilterListener

public FilterListener getFilterListener(String tag)

Description copied from interface: Resolver

Return the filter listener for the given tag, or null if none.

Specified by:

getFilterListener in interface Resolver

getQueryContext

public QueryContext getQueryContext()

Description copied from interface: Resolver

The QueryContext for which this resolver was created

Specified by:

getQueryContext in interface Resolver