java.lang.Object
- org.apache.openjpa.meta.Extensions
- - org.apache.openjpa.meta.ClassMetaData

All Implemented Interfaces:

Serializable, Comparable<ClassMetaData>, ValueListener, SourceTracker, Commentable, MetaDataContext, MetaDataModes

Direct Known Subclasses:

ClassMapping
```
public class ClassMetaData
extends Extensions
implements Comparable<ClassMetaData>, SourceTracker, MetaDataContext, MetaDataModes, Commentable, ValueListener
```
Contains metadata about a persistent type. This metadata is available both at enhancement time and runtime. Note that this class employs aggressive caching, and therefore it is important to finalize the configuration of field metadatas before invoking methods that depend on that configuration, such as getPrimaryKeyFields().

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ACCESS_EXPLICIT`	Persistent class has explicitly defined an access type.
`static int`	`ACCESS_FIELD`	Persistent attributes are accessed via direct field access.
`static int`	`ACCESS_PROPERTY`	Persistent attributes are accessed via setters and getters.
`static int`	`ACCESS_UNKNOWN`	Unknown access type.
`protected static String`	`DEFAULT_STRING`
`static int`	`ID_APPLICATION`	Application identity type.
`static int`	`ID_DATASTORE`	Datastore identity type.
`static int`	`ID_UNKNOWN`	Unknown identity type.
`static String`	`SYNTHETIC`	Value for using a synthetic detached state field, which is the default.

Fields inherited from class org.apache.openjpa.meta.Extensions
OPENJPA

Fields inherited from interface org.apache.openjpa.lib.xml.Commentable
EMPTY_COMMENTS

Fields inherited from interface org.apache.openjpa.meta.MetaDataModes
MODE_ALL, MODE_ANN_MAPPING, MODE_MAPPING, MODE_MAPPING_INIT, MODE_META, MODE_NONE, MODE_QUERY

Fields inherited from interface org.apache.openjpa.lib.meta.SourceTracker
SRC_ANNOTATIONS, SRC_OTHER, SRC_XML

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`ClassMetaData(Class<?> type, MetaDataRepository repos)`	Constructor.
`protected`	`ClassMetaData(ValueMetaData owner)`	Embedded constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FetchGroup`	`addDeclaredFetchGroup(String name)`	Adds fetch group of the given name, or returns existing instance.
`FieldMetaData`	`addDeclaredField(String name, Class<?> type)`	Add a new field metadata to this class.
`void`	`addDeclaredInterface(Class<?> iface)`	Explicitly declare the given interface among the ones this class implements.
`FieldMetaData`	`addDefinedSuperclassField(String name, Class<?> type, Class<?> sup)`	Add a new defined superclass field metadata to this class.
`protected void`	`addExtensionKeys(Collection exts)`	Add all the known extension keys to the specified collection; any implementation that utilized new extensions should override this method to include both the known extensions of its superclass as well as its own extension keys.
`protected void`	`clearAllFieldCache()`	Clear cached field data.
`protected void`	`clearDefinedFieldCache()`	Clear defined field data.
`protected void`	`clearFieldCache()`	Clear cached field data.
`protected void`	`clearSubclassCache()`	Clear cached subclass data.
`int`	`compareTo(ClassMetaData other)`
`void`	`copy(ClassMetaData meta)`	Copy the metadata from the given instance to this one.
`void`	`defineSuperclassFields(boolean force)`	Incorporate superclass fields redefined in this subclass into this metadata.
`boolean`	`equals(Object other)`
`int`	`getAccessType()`	The access type used by this class.
`Boolean`	`getCacheEnabled()`	Returns tri-state status on whether this class has been enabled for caching.
`int`	`getColNumber()`	Return the column number in the line of the file at which this instance was parsed.
`String[]`	`getComments()`	Return comments, or empty array if none.
`FetchGroup[]`	`getCustomFetchGroups()`	Return all fetch groups for this type, including superclass groups but excluding the standard groups such as "default" or "all".
`DataCache`	`getDataCache()`	Return the data cache for this class, or null if it is not cachable.
`boolean`	`getDataCacheEnabled()`	Affirms true if this receiver is annotated with @DataCache and is not disabled.
`String`	`getDataCacheName()`	The name of the data cache that stores the managed instance of this class, by default.
`int`	`getDataCacheTimeout()`	The cache timeout for this class. -1 indicates no timeout.
`FetchGroup[]`	`getDeclaredFetchGroups()`	Return the fetch groups declared explicitly in this type.
`FieldMetaData`	`getDeclaredField(int index)`	Return the metadata for the persistent or transactional field with the given relative index.
`FieldMetaData`	`getDeclaredField(String name)`	Return the metadata for the persistent or transactional field with the given name, without including superclass fields.
`String[]`	`getDeclaredFieldNames()`	Utility method to get names of all declared fields excluding the superclasses' sorted in lexical order.
`FieldMetaData[]`	`getDeclaredFields()`	Return only the fields for this class, without superclass fields.
`Class<?>[]`	`getDeclaredInterfaces()`	Return all explicitly declared interfaces this class implements.
`FieldMetaData[]`	`getDeclaredUnmanagedFields()`	Return any fields that were added as non-managed.
`FieldMetaData[]`	`getDefaultFetchGroupFields()`	Return the list of fields in the default fetch group, including superclass fields, or an empty array if none.
`FieldMetaData[]`	`getDefinedFields()`	Returns an array of all the fields defined by this class.
`FieldMetaData[]`	`getDefinedFieldsInListingOrder()`	Returns all fields defined by this class in the order they are listed in the metadata file.
`FieldMetaData`	`getDefinedSuperclassField(String name)`	Return the defined superclass field with the given name, or null if none.
`Class<?>`	`getDescribedType()`	The persistence capable class described by this metadata.
`String`	`getDescribedTypeString()`	The persistence capable stringified class described by this metadata.
`String`	`getDetachedState()`	The name of the detach state field, or null if none.
`Field`	`getDetachedStateField()`	Return the detach state field, or null if none.
`ValueMetaData`	`getEmbeddingMetaData()`	If this metadata is for an embedded object, returning the owning value.
`ClassLoader`	`getEnvClassLoader()`	The environmental loader used when loading this metadata.
`int`	`getExtraFieldDataIndex(int field)`	Return the intermediate field data index of the given field in the compacted array, or -1 if the field does not use extra data.
`int`	`getExtraFieldDataLength()`	Return the number of fields that use impl or intermediate data, in order to create a compacted array for storage of said data.
`FetchGroup`	`getFetchGroup(String name)`	Gets a named fetch group.
`FieldMetaData`	`getField(int index)`	Return the metadata for the persistent or transactional field with the given absolute index.
`FieldMetaData`	`getField(String name)`	Return the metadata for the persistent or transactional field with the given name.
`String[]`	`getFieldNames()`	Utility method to get names of all fields including the superclasses' sorted in lexical order.
`FieldMetaData[]`	`getFields()`	Return all field metadata, including superclass fields.
`FieldMetaData[]`	`getFieldsInListingOrder()`	Returns all fields in the order they are listed in the metadata file.
`Class<?>`	`getIdClass()`	The class specified with the @IdClass annotation if used
`SequenceMetaData`	`getIdentitySequenceMetaData()`	Metadata for the datastore identity sequence.
`String`	`getIdentitySequenceName()`	The datastore identity sequence name, or null for none.
`int`	`getIdentityStrategy()`	The strategy to use for datastore identity generation.
`int`	`getIdentityType()`	The type of identity being used.
`String[]`	`getInterfaceAliasedProperties(Class<?> iface)`	Return all aliases property named for the given interface.
`Class<?>`	`getInterfaceImpl()`	Return the managed interface implementor if any.
`String`	`getInterfacePropertyAlias(Class<?> iface, String orig)`	Get local field alias for the given interface property.
`LifecycleMetaData`	`getLifecycleMetaData()`	Information about lifecycle callbacks for this class.
`int`	`getLineNumber()`	Return the line number of the file at which this instance was parsed.
`int`	`getListingIndex()`	The index in which this class was listed in the metadata.
`FieldMetaData[]`	`getLrsFields()`	Return all large result set fields.
`ClassMetaData[]`	`getMappedPCSubclassMetaDatas()`	Return all mapped subclasses.
`ClassMetaData`	`getMappedPCSuperclassMetaData()`	Return the closest mapped superclass.
`List<FieldMetaData>`	`getMappyedByIdFields()`
`Class<?>`	`getObjectIdType()`	The metadata-specified class to use for the object ID.
`Class<?>[]`	`getPCSubclasses()`	Return the known persistence capable subclasses of the described type, or empty array if none or if this is embedded metadata.
`ClassMetaData[]`	`getPCSubclassMetaDatas()`	Return the metadata for the known persistence capable subclasses of the described type, or empty array if none or if this is embedded metadata.
`Class<?>`	`getPCSuperclass()`	The persistence capable superclass of the described type.
`ClassMetaData`	`getPCSuperclassMetaData()`	The metadata for this class' superclass.
`int[]`	`getPkAndNonPersistentManagedFmdIndexes()`
`FieldMetaData[]`	`getPrimaryKeyFields()`	Return primary key fields, or empty array if none.
`FieldMetaData[]`	`getProxyFields()`	Return all fields that are types that need to be wrappered by a proxy.
`MetaDataRepository`	`getRepository()`	Return the owning repository.
`boolean`	`getRequiresExtent()`	Whether the type requires extent management.
`int`	`getResolve()`	The resolve mode for this metadata.
`String`	`getResourceName()`	Return the domain-meaningful name of the resource that was loaded from this source.
`File`	`getSourceFile()`	Return the file from which this instance was parsed.
`int`	`getSourceMode()`	The source mode this metadata has been loaded under.
`String`	`getSourceName()`
`Object`	`getSourceScope()`	Return the domain-dependent scope of this instance within its file.
`int`	`getSourceType()`	Return the type of source.
`protected FieldMetaData`	`getSuperclassField(FieldMetaData supField)`	Return the superclass copy of the given field.
`String`	`getTypeAlias()`	Returns the alias for the described type, or `null` if none has been set.
`boolean`	`getUseSchemaElement()`	Set whether to include schema name in generated class files
`FieldMetaData`	`getVersionField()`	Return the version field for this class, if any.
`boolean`	`hasAbstractPKField()`	Convenience method to determine if the pcType modeled by this ClassMetaData object is both abstract and declares PKFields.
`int`	`hashCode()`
`boolean`	`hasInverseManagedFields()`
`boolean`	`hasPKFieldsFromAbstractClass()`	Convenience method to determine if this type is a direct decendent of an abstract type declaring PKFields.
`protected void`	`initializeMapping()`	Initialize mapping.
`boolean`	`isAbstract()`
`boolean`	`isAccessibleField(String field)`	Return whether the given name represents a managed or static field of this class, including superclass fields.
`boolean`	`isDetachable()`	Whether instances are detachable.
`boolean`	`isEmbeddable()`
`boolean`	`isEmbeddedOnly()`	Whether the type can only be used as an embedded object.
`boolean`	`isExplicitAccess()`	Affirms if access style is explicitly defined.
`boolean`	`isIntercepting()`	Whether the type's fields are actively intercepted, either by redefinition or enhancement.
`boolean`	`isManagedInterface()`	Whether the type is a managed interface.
`boolean`	`isMapped()`	Whether this class is mapped to the datastore.
`boolean`	`isMixedAccess()`	Affirms if attributes of this class use mixed access types.
`boolean`	`isObjectIdTypeShared()`	Whether this type uses an application identity class that is shared with other classes, and is therefore wrapped in an `ObjectId`.
`boolean`	`isOpenJPAIdentity()`	Whether this type uses OpenJPA identity.
`void`	`registerForValueUpdate(String... values)`
`boolean`	`removeDeclaredFetchGroup(FetchGroup fg)`	Remove a declared fetch group.
`boolean`	`removeDeclaredField(FieldMetaData field)`	Remove the given field from management.
`boolean`	`removeDeclaredInterface(Class<?> iface)`	Remove the given interface from the declared list.
`boolean`	`removeDefinedSuperclassField(FieldMetaData field)`	Remove the given field from management.
`boolean`	`resolve(int mode)`	Resolve and validate metadata.
`protected void`	`resolveMapping(boolean runtime)`	Resolve mapping data.
`protected void`	`resolveMeta(boolean runtime)`	Resolve metadata.
`void`	`setAbstract(boolean flag)`
`void`	`setAccessType(int type)`	Sets the access type.
`void`	`setCacheEnabled(boolean enabled)`	Sets the eligibility status of this class for cache.
`void`	`setColNumber(int colNum)`
`void`	`setComments(String[] comments)`	Set comments.
`void`	`setDataCacheName(String name)`	Set the cache name for this class.
`void`	`setDataCacheTimeout(int timeout)`	The cache timeout for this class. -1 indicates no timeout.
`protected void`	`setDescribedType(Class<?> type)`	Set the class described by this metadata.
`void`	`setDetachable(boolean detachable)`	Whether instances are detachable.
`void`	`setDetachedState(String field)`	The name of the detach state field, or null if none.
`void`	`setEmbeddable()`
`void`	`setEmbeddedOnly(boolean embed)`	Whether the type can only be used as an embedded object.
`void`	`setEnvClassLoader(ClassLoader loader)`	The class environmental loader used when loading this metadata.
`void`	`setIdentitySequenceName(String seqName)`	The datastore identity sequence name, or null for none.
`void`	`setIdentityStrategy(int strategy)`	The strategy to use for datastore identity generation.
`void`	`setIdentityType(int type)`	The type of identity being used.
`void`	`setIntercepting(boolean intercepting)`	Whether the type's fields are actively intercepted, either by redefinition or enhancement.
`void`	`setInterfaceImpl(Class<?> impl)`	Set the managed interface implementor class.
`void`	`setInterfacePropertyAlias(Class<?> iface, String orig, String local)`	Alias properties from the given interface during queries to the local field.
`void`	`setLineNumber(int lineNum)`
`void`	`setListingIndex(int index)`	The index in which this field was listed in the metadata.
`void`	`setManagedInterface(boolean managedInterface)`	Whether the type is a managed interface
`void`	`setObjectIdType(Class<?> cls, boolean shared)`	The metadata-specified class to use for the object ID.
`void`	`setPCSuperclass(Class<?> pc)`	The persistence capable superclass of the described type.
`void`	`setPCSuperclassMetaData(ClassMetaData meta)`	The metadata for this class' superclass.
`void`	`setRequiresExtent(boolean req)`	Whether the type requires extent management.
`void`	`setResolve(int mode)`	The resolve mode for this metadata.
`void`	`setResolve(int mode, boolean on)`	The resolve mode for this metadata.
`void`	`setSource(File file, int srcType, String srcName)`
`void`	`setSourceMode(int mode)`	The source mode this metadata has been loaded under.
`void`	`setSourceMode(int mode, boolean on)`	The source mode this metadata has been loaded under.
`void`	`setTypeAlias(String alias)`	Sets the alias for the described type.
`void`	`setUseSchemaElement(boolean useSchemaElement)`	Get whether to include schema name in generated class files
`String`	`toString()`
`boolean`	`useIdClassFromParent()`	Return true if this class uses IdClass derived from idClass of the parent entity which annotated as id in the child class.
`Boolean`	`usesDetachedState()`	Whether an instance of this type has detached state.
`protected void`	`validateMapping(boolean runtime)`	Validate mapping data.
`protected void`	`validateMeta(boolean runtime)`	Validate resolved metadata.
`void`	`valueChanged(Value val)`	Callback used by `Value` objects to notify listener of change.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - ID_UNKNOWN
```
public static final int ID_UNKNOWN
```
    Unknown identity type.
    
    See Also:
    
    Constant Field Values
  - ID_DATASTORE
```
public static final int ID_DATASTORE
```
    Datastore identity type.
    
    See Also:
    
    Constant Field Values
  - ID_APPLICATION
```
public static final int ID_APPLICATION
```
    Application identity type.
    
    See Also:
    
    Constant Field Values
  - ACCESS_UNKNOWN
```
public static final int ACCESS_UNKNOWN
```
    Unknown access type.
  - ACCESS_FIELD
```
public static final int ACCESS_FIELD
```
    Persistent attributes are accessed via direct field access. Bit flag.
  - ACCESS_PROPERTY
```
public static final int ACCESS_PROPERTY
```
    Persistent attributes are accessed via setters and getters. Bit flag.
  - ACCESS_EXPLICIT
```
public static final int ACCESS_EXPLICIT
```
    Persistent class has explicitly defined an access type. This will allow the attributes to use mixed access i.e. some field may use ACCESS_FIELD while others ACCESS_PROPERTY.
  - SYNTHETIC
```
public static final String SYNTHETIC
```
    Value for using a synthetic detached state field, which is the default.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_STRING
```
protected static final String DEFAULT_STRING
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ClassMetaData
```
protected ClassMetaData(Class<?> type,
                        MetaDataRepository repos)
```
    Constructor. Supply described type and repository.
  - ClassMetaData
```
protected ClassMetaData(ValueMetaData owner)
```
    Embedded constructor. Supply embedding value.
- Method Detail
  - getRepository
```
public MetaDataRepository getRepository()
```
    Return the owning repository.
    
    Specified by:
    
    getRepository in interface MetaDataContext
    
    Specified by:
    
    getRepository in class Extensions
  - getEmbeddingMetaData
```
public ValueMetaData getEmbeddingMetaData()
```
    If this metadata is for an embedded object, returning the owning value.
  - getDescribedType
```
public Class<?> getDescribedType()
```
    The persistence capable class described by this metadata.
  - getDescribedTypeString
```
public String getDescribedTypeString()
```
    The persistence capable stringified class described by this metadata.
  - setDescribedType
```
protected void setDescribedType(Class<?> type)
```
    Set the class described by this metadata. The type may be reset when an embedded value changes its declared type.
  - getEnvClassLoader
```
public ClassLoader getEnvClassLoader()
```
    The environmental loader used when loading this metadata. The class metadata should use this loader when loading metadata for its superclass and field types.
  - setEnvClassLoader
```
public void setEnvClassLoader(ClassLoader loader)
```
    The class environmental loader used when loading this metadata. The class metadata should use this loader when loading metadata for its superclass and field types.
  - getPCSuperclass
```
public Class<?> getPCSuperclass()
```
    The persistence capable superclass of the described type.
  - setPCSuperclass
```
public void setPCSuperclass(Class<?> pc)
```
    The persistence capable superclass of the described type.
  - getPCSuperclassMetaData
```
public ClassMetaData getPCSuperclassMetaData()
```
    The metadata for this class' superclass.
  - setPCSuperclassMetaData
```
public void setPCSuperclassMetaData(ClassMetaData meta)
```
    The metadata for this class' superclass.
  - isMapped
```
public boolean isMapped()
```
    Whether this class is mapped to the datastore. By default, only returns false if class is embedded-only, but subclasses might override to allow unmapped other types.
  - getMappedPCSuperclassMetaData
```
public ClassMetaData getMappedPCSuperclassMetaData()
```
    Return the closest mapped superclass.
  - getPCSubclasses
```
public Class<?>[] getPCSubclasses()
```
    Return the known persistence capable subclasses of the described type, or empty array if none or if this is embedded metadata.
  - getPCSubclassMetaDatas
```
public ClassMetaData[] getPCSubclassMetaDatas()
```
    Return the metadata for the known persistence capable subclasses of the described type, or empty array if none or if this is embedded metadata.
  - getMappedPCSubclassMetaDatas
```
public ClassMetaData[] getMappedPCSubclassMetaDatas()
```
    Return all mapped subclasses.
  - getIdentityType
```
public int getIdentityType()
```
    The type of identity being used. This will be one of:
    
    ID_UNKNOWN: unknown identity type
    
    ID_DATASTORE: identity managed by the data store and independent of the fields of the instance
    
    ID_APPLICATION: identity managed by the application and defined by one or more fields of the instance
    
    If unspecified, defaults to ID_DATASTORE if there are no primary key fields, and ID_APPLICATION otherwise.
  - setIdentityType
```
public void setIdentityType(int type)
```
    The type of identity being used. This will be one of:
    
    ID_UNKNOWN: unknown identity type
    
    ID_DATASTORE: identity managed by the data store and independent of the fields of the instance
    
    ID_APPLICATION: identity managed by the application and defined by one or more fields of the instance
    
    If unspecified, defaults to ID_DATASTORE if there are no primary key fields, and ID_APPLICATION otherwise.
  - getObjectIdType
```
public Class<?> getObjectIdType()
```
    The metadata-specified class to use for the object ID.
  - setObjectIdType
```
public void setObjectIdType(Class<?> cls,
                            boolean shared)
```
    The metadata-specified class to use for the object ID. When there is IdClass annotation, AnnotationMetaDataParser will call this method to set ObjectId type. However, if this is a derived identity in the child entity where a relation field (parent entity) is used as an id, and this relation field has an IdClass, the IdClass annotation in the child entity can be ignored as Openjpa will automatically wrap parent's IdClass as child's IdClass.
  - isObjectIdTypeShared
```
public boolean isObjectIdTypeShared()
```
    Whether this type uses an application identity class that is shared with other classes, and is therefore wrapped in an ObjectId.
  - isOpenJPAIdentity
```
public boolean isOpenJPAIdentity()
```
    Whether this type uses OpenJPA identity.
  - getIdentityStrategy
```
public int getIdentityStrategy()
```
    The strategy to use for datastore identity generation. One of the constants from ValueStrategies.
  - setIdentityStrategy
```
public void setIdentityStrategy(int strategy)
```
    The strategy to use for datastore identity generation. One of the constants from ValueStrategies.
  - getIdentitySequenceName
```
public String getIdentitySequenceName()
```
    The datastore identity sequence name, or null for none.
  - setIdentitySequenceName
```
public void setIdentitySequenceName(String seqName)
```
    The datastore identity sequence name, or null for none.
  - getIdentitySequenceMetaData
```
public SequenceMetaData getIdentitySequenceMetaData()
```
    Metadata for the datastore identity sequence.
  - getLifecycleMetaData
```
public LifecycleMetaData getLifecycleMetaData()
```
    Information about lifecycle callbacks for this class.
  - getTypeAlias
```
public String getTypeAlias()
```
    Returns the alias for the described type, or null if none has been set.
    
    See Also:
    
    setTypeAlias(java.lang.String)
  - setTypeAlias
```
public void setTypeAlias(String alias)
```
    Sets the alias for the described type. The alias can be any arbitrary string that the implementation can later use to refer to the class. Note that at runtime, only the alias computed when the persistent type was enhanced is used.
    
    Parameters:
    
    alias - the alias name to apply to the described type
  - getAccessType
```
public int getAccessType()
```
    The access type used by this class.
  - setAccessType
```
public void setAccessType(int type)
```
    Sets the access type.
  - isExplicitAccess
```
public boolean isExplicitAccess()
```
    Affirms if access style is explicitly defined.
  - isMixedAccess
```
public boolean isMixedAccess()
```
    Affirms if attributes of this class use mixed access types.
  - getRequiresExtent
```
public boolean getRequiresExtent()
```
    Whether the type requires extent management.
  - setRequiresExtent
```
public void setRequiresExtent(boolean req)
```
    Whether the type requires extent management.
  - isEmbeddedOnly
```
public boolean isEmbeddedOnly()
```
    Whether the type can only be used as an embedded object.
  - setEmbeddedOnly
```
public void setEmbeddedOnly(boolean embed)
```
    Whether the type can only be used as an embedded object.
  - isEmbeddable
```
public boolean isEmbeddable()
```
  - setEmbeddable
```
public void setEmbeddable()
```
  - isIntercepting
```
public boolean isIntercepting()
```
    Whether the type's fields are actively intercepted, either by redefinition or enhancement.
  - setIntercepting
```
public void setIntercepting(boolean intercepting)
```
    Whether the type's fields are actively intercepted, either by redefinition or enhancement.
  - isManagedInterface
```
public boolean isManagedInterface()
```
    Whether the type is a managed interface.
  - setManagedInterface
```
public void setManagedInterface(boolean managedInterface)
```
    Whether the type is a managed interface
  - getInterfaceImpl
```
public Class<?> getInterfaceImpl()
```
    Return the managed interface implementor if any.
  - setInterfaceImpl
```
public void setInterfaceImpl(Class<?> impl)
```
    Set the managed interface implementor class.
  - getDeclaredInterfaces
```
public Class<?>[] getDeclaredInterfaces()
```
    Return all explicitly declared interfaces this class implements.
  - addDeclaredInterface
```
public void addDeclaredInterface(Class<?> iface)
```
    Explicitly declare the given interface among the ones this class implements.
  - removeDeclaredInterface
```
public boolean removeDeclaredInterface(Class<?> iface)
```
    Remove the given interface from the declared list.
  - setInterfacePropertyAlias
```
public void setInterfacePropertyAlias(Class<?> iface,
                                      String orig,
                                      String local)
```
    Alias properties from the given interface during queries to the local field.
  - getInterfacePropertyAlias
```
public String getInterfacePropertyAlias(Class<?> iface,
                                        String orig)
```
    Get local field alias for the given interface property.
  - getInterfaceAliasedProperties
```
public String[] getInterfaceAliasedProperties(Class<?> iface)
```
    Return all aliases property named for the given interface.
  - getExtraFieldDataLength
```
public int getExtraFieldDataLength()
```
    Return the number of fields that use impl or intermediate data, in order to create a compacted array for storage of said data.
  - getExtraFieldDataIndex
```
public int getExtraFieldDataIndex(int field)
```
    Return the intermediate field data index of the given field in the compacted array, or -1 if the field does not use extra data.
    
    See Also:
    
    getExtraFieldDataLength()
  - isAccessibleField
```
public boolean isAccessibleField(String field)
```
    Return whether the given name represents a managed or static field of this class, including superclass fields.
  - getProxyFields
```
public FieldMetaData[] getProxyFields()
```
    Return all fields that are types that need to be wrappered by a proxy. The types that need to be proxied are:
  - org.apache.openjpa.meta.JavaTypes.CALENDAR
  - org.apache.openjpa.meta.JavaTypes.COLLECTION
  - org.apache.openjpa.meta.JavaTypes.DATE
  - org.apache.openjpa.meta.JavaTypes.MAP
  - org.apache.openjpa.meta.JavaTypes.OBJECT

getLrsFields
```
public FieldMetaData[] getLrsFields()
```
Return all large result set fields. Will never return null.

getFields
```
public FieldMetaData[] getFields()
```
Return all field metadata, including superclass fields.

getSuperclassField

protected FieldMetaData getSuperclassField(FieldMetaData supField)

Return the superclass copy of the given field.

getDeclaredFields
```
public FieldMetaData[] getDeclaredFields()
```
Return only the fields for this class, without superclass fields.

getPrimaryKeyFields
```
public FieldMetaData[] getPrimaryKeyFields()
```
Return primary key fields, or empty array if none. The order in which the keys are returned will be the order in which the fields are declared, starting at the least-derived superclass and ending with the primary key fields of the most-derived subclass.

getDefaultFetchGroupFields
```
public FieldMetaData[] getDefaultFetchGroupFields()
```
Return the list of fields in the default fetch group, including superclass fields, or an empty array if none.

getVersionField
```
public FieldMetaData getVersionField()
```
Return the version field for this class, if any.

getField
```
public FieldMetaData getField(int index)
```
Return the metadata for the persistent or transactional field with the given absolute index.

Returns:

the field's metadata, or null if not found

getDeclaredField
```
public FieldMetaData getDeclaredField(int index)
```
Return the metadata for the persistent or transactional field with the given relative index.

Returns:

the field's metadata, or null if not found

getField
```
public FieldMetaData getField(String name)
```
Return the metadata for the persistent or transactional field with the given name.

Returns:

the field's metadata, or null if not found

getDeclaredField
```
public FieldMetaData getDeclaredField(String name)
```
Return the metadata for the persistent or transactional field with the given name, without including superclass fields.

Returns:

the field's metadata, or null if not found

getDeclaredUnmanagedFields
```
public FieldMetaData[] getDeclaredUnmanagedFields()
```
Return any fields that were added as non-managed. All other methods to get fields return only those that are managed.

addDeclaredField

public FieldMetaData addDeclaredField(String name,
                                      Class<?> type)

Add a new field metadata to this class.

removeDeclaredField
```
public boolean removeDeclaredField(FieldMetaData field)
```
Remove the given field from management.

Returns:

true if the field was removed, false otherwise

getDefinedSuperclassField
```
public FieldMetaData getDefinedSuperclassField(String name)
```
Return the defined superclass field with the given name, or null if none.

addDefinedSuperclassField

public FieldMetaData addDefinedSuperclassField(String name,
                                               Class<?> type,
                                               Class<?> sup)

Add a new defined superclass field metadata to this class.

removeDefinedSuperclassField
```
public boolean removeDefinedSuperclassField(FieldMetaData field)
```
Remove the given field from management.

Returns:

true if the field was removed, false otherwise

defineSuperclassFields
```
public void defineSuperclassFields(boolean force)
```
Incorporate superclass fields redefined in this subclass into this metadata. This method is generally called after metadata is resolved and mapping information is loaded, but before mapping resolve.

Parameters:

force - whether to force re-mapping of even mapped superclass fields

getDefinedFields
```
public FieldMetaData[] getDefinedFields()
```
Returns an array of all the fields defined by this class. This includes mapped declared fields and any concrete mapping of unmapped superclass fields performed by this class.

getFieldsInListingOrder
```
public FieldMetaData[] getFieldsInListingOrder()
```
Returns all fields in the order they are listed in the metadata file. Unlisted fields are placed after listed ones.

getDefinedFieldsInListingOrder
```
public FieldMetaData[] getDefinedFieldsInListingOrder()
```
Returns all fields defined by this class in the order they are listed in the metadata file. Unlisted fields are placed after listed ones. This array includes declared transactional and unmanaged fields.

getDataCacheName
```
public String getDataCacheName()
```
The name of the data cache that stores the managed instance of this class, by default. This can be overwritten by per-instance basis cache distribution policy.

Returns:

null if this class is disabled from cache by @DataCache(enabled=false). default if @DataCache(enabled=true) without a name. Otherwise, data cache name set by the user via @DataCache name attribute.

setDataCacheName
```
public void setDataCacheName(String name)
```
Set the cache name for this class.

Parameters:

name - can be null to disable cache.

getDataCacheEnabled
```
public boolean getDataCacheEnabled()
```
Affirms true if this receiver is annotated with @DataCache and is not disabled. A separate state variable is necessary besides the name of the cache defaulted to a special string.

getDataCacheTimeout
```
public int getDataCacheTimeout()
```
The cache timeout for this class. -1 indicates no timeout.

setDataCacheTimeout
```
public void setDataCacheTimeout(int timeout)
```
The cache timeout for this class. -1 indicates no timeout.

getDataCache
```
public DataCache getDataCache()
```
Return the data cache for this class, or null if it is not cachable.

isDetachable
```
public boolean isDetachable()
```
Whether instances are detachable.

setDetachable

public void setDetachable(boolean detachable)

Whether instances are detachable.

getDetachedState
```
public String getDetachedState()
```
The name of the detach state field, or null if none.

setDetachedState
```
public void setDetachedState(String field)
```
The name of the detach state field, or null if none.

getDetachedStateField
```
public Field getDetachedStateField()
```
Return the detach state field, or null if none.

usesDetachedState
```
public Boolean usesDetachedState()
```
Whether an instance of this type has detached state.

Returns:

true if a detached instance must have detached state, false if it does not, and null if it may use a manually-constructed instance without detached state

clearAllFieldCache
```
protected void clearAllFieldCache()
```
Clear cached field data.

clearDefinedFieldCache
```
protected void clearDefinedFieldCache()
```
Clear defined field data.

clearFieldCache
```
protected void clearFieldCache()
```
Clear cached field data.

clearSubclassCache
```
protected void clearSubclassCache()
```
Clear cached subclass data.

hashCode
```
public int hashCode()
```
Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:: equals in class Object

compareTo
```
public int compareTo(ClassMetaData other)
```
Specified by:

compareTo in interface Comparable<ClassMetaData>

toString
```
public String toString()
```
Overrides:

toString in class Object

getResolve
```
public int getResolve()
```
The resolve mode for this metadata.

setResolve
```
public void setResolve(int mode)
```
The resolve mode for this metadata.

setResolve

public void setResolve(int mode,
                       boolean on)

The resolve mode for this metadata.

resolve
```
public boolean resolve(int mode)
```
Resolve and validate metadata. Return true if already resolved.

resolveMeta

protected void resolveMeta(boolean runtime)

Resolve metadata.

validateMeta

protected void validateMeta(boolean runtime)

Validate resolved metadata.

resolveMapping
```
protected void resolveMapping(boolean runtime)
```
Resolve mapping data. Logs resolve message and resolves super by default.

validateMapping

protected void validateMapping(boolean runtime)

Validate mapping data.

initializeMapping
```
protected void initializeMapping()
```
Initialize mapping. Logs init message by default.

useIdClassFromParent
```
public boolean useIdClassFromParent()
```
Return true if this class uses IdClass derived from idClass of the parent entity which annotated as id in the child class. In this case, there are no key fields in the child entity corresponding to the fields in the IdClass.

getDeclaredFetchGroups
```
public FetchGroup[] getDeclaredFetchGroups()
```
Return the fetch groups declared explicitly in this type.

getCustomFetchGroups
```
public FetchGroup[] getCustomFetchGroups()
```
Return all fetch groups for this type, including superclass groups but excluding the standard groups such as "default" or "all".

getFetchGroup
```
public FetchGroup getFetchGroup(String name)
```
Gets a named fetch group. If not available in this receiver then looks up the inheritance hierarchy.

Parameters:

name - name of a fetch group.

Returns:

an existing fetch group of the given name if known to this receiver or any of its superclasses. Otherwise null.

addDeclaredFetchGroup
```
public FetchGroup addDeclaredFetchGroup(String name)
```
Adds fetch group of the given name, or returns existing instance.

Parameters:

name - a non-null, non-empty name. Must be unique within this receiver's scope. The super class may have a group with the same name.

removeDeclaredFetchGroup

public boolean removeDeclaredFetchGroup(FetchGroup fg)

Remove a declared fetch group.

getSourceFile
```
public File getSourceFile()
```
Description copied from interface: SourceTracker

Return the file from which this instance was parsed.

Specified by:

getSourceFile in interface SourceTracker

getSourceScope
```
public Object getSourceScope()
```
Description copied from interface: SourceTracker

Return the domain-dependent scope of this instance within its file.

Specified by:

getSourceScope in interface SourceTracker

getSourceType
```
public int getSourceType()
```
Description copied from interface: SourceTracker

Return the type of source.

Specified by:

getSourceType in interface SourceTracker

setSource

public void setSource(File file,
                      int srcType,
                      String srcName)

getResourceName
```
public String getResourceName()
```
Description copied from interface: SourceTracker

Return the domain-meaningful name of the resource that was loaded from this source. I.e., if we had loaded the source for a Java class, this would return the name of the class.

Specified by:

getResourceName in interface SourceTracker

getLineNumber
```
public int getLineNumber()
```
Description copied from interface: SourceTracker

Return the line number of the file at which this instance was parsed.

Specified by:

getLineNumber in interface SourceTracker

setLineNumber

public void setLineNumber(int lineNum)

getColNumber
```
public int getColNumber()
```
Description copied from interface: SourceTracker

Return the column number in the line of the file at which this instance was parsed.

Specified by:

getColNumber in interface SourceTracker

setColNumber

public void setColNumber(int colNum)

getSourceMode
```
public int getSourceMode()
```
The source mode this metadata has been loaded under.

setSourceMode
```
public void setSourceMode(int mode)
```
The source mode this metadata has been loaded under.

setSourceMode

public void setSourceMode(int mode,
                          boolean on)

The source mode this metadata has been loaded under.

getListingIndex
```
public int getListingIndex()
```
The index in which this class was listed in the metadata. Defaults to -1 if this class was not listed in the metadata.

setListingIndex
```
public void setListingIndex(int index)
```
The index in which this field was listed in the metadata. Defaults to -1 if this class was not listed in the metadata.

getComments
```
public String[] getComments()
```
Description copied from interface: Commentable

Return comments, or empty array if none.

Specified by:

getComments in interface Commentable

setComments
```
public void setComments(String[] comments)
```
Description copied from interface: Commentable

Set comments.

Specified by:

setComments in interface Commentable

copy
```
public void copy(ClassMetaData meta)
```
Copy the metadata from the given instance to this one. Do not copy mapping information.

addExtensionKeys
```
protected void addExtensionKeys(Collection exts)
```
Description copied from class: Extensions

Add all the known extension keys to the specified collection; any implementation that utilized new extensions should override this method to include both the known extensions of its superclass as well as its own extension keys.

Overrides:

addExtensionKeys in class Extensions

registerForValueUpdate

public void registerForValueUpdate(String... values)

valueChanged
```
public void valueChanged(Value val)
```
Description copied from interface: ValueListener

Callback used by Value objects to notify listener of change.

Specified by:

valueChanged in interface ValueListener

getFieldNames
```
public String[] getFieldNames()
```
Utility method to get names of all fields including the superclasses' sorted in lexical order.

getDeclaredFieldNames
```
public String[] getDeclaredFieldNames()
```
Utility method to get names of all declared fields excluding the superclasses' sorted in lexical order.

isAbstract
```
public boolean isAbstract()
```

setAbstract

public void setAbstract(boolean flag)

hasAbstractPKField
```
public boolean hasAbstractPKField()
```
Convenience method to determine if the pcType modeled by this ClassMetaData object is both abstract and declares PKFields. This method is used by the PCEnhancer to determine if special handling is required.

hasPKFieldsFromAbstractClass
```
public boolean hasPKFieldsFromAbstractClass()
```
Convenience method to determine if this type is a direct decendent of an abstract type declaring PKFields. Returns true if there are no pcTypes mapped to a table between this type and an abstract pcType declaring PKFields. Returns false if there no such abstract pcTypes in the inheritance hierarchy or if there are any pcTypes mapped to tables in between the type represented by this ClassMetaData object and the abstract pcType declaring PKFields.

setCacheEnabled
```
public void setCacheEnabled(boolean enabled)
```
Sets the eligibility status of this class for cache.

getCacheEnabled
```
public Boolean getCacheEnabled()
```
Returns tri-state status on whether this class has been enabled for caching.

Returns:

TRUE or FALSE denote this class has been explicitly enabled or disabled for caching. If no status has been explicitly set, then the status of the persistent super class, if any, is returned.

getSourceName
```
public String getSourceName()
```

getPkAndNonPersistentManagedFmdIndexes

public int[] getPkAndNonPersistentManagedFmdIndexes()

hasInverseManagedFields

public boolean hasInverseManagedFields()

getMappyedByIdFields

public List<FieldMetaData> getMappyedByIdFields()

getUseSchemaElement
```
public boolean getUseSchemaElement()
```
Set whether to include schema name in generated class files

setUseSchemaElement
```
public void setUseSchemaElement(boolean useSchemaElement)
```
Get whether to include schema name in generated class files

getIdClass
```
public Class<?> getIdClass()
```
The class specified with the @IdClass annotation if used

Class ClassMetaData

Field Summary

Fields inherited from class org.apache.openjpa.meta.Extensions

Fields inherited from interface org.apache.openjpa.lib.xml.Commentable

Fields inherited from interface org.apache.openjpa.meta.MetaDataModes

Fields inherited from interface org.apache.openjpa.lib.meta.SourceTracker

Constructor Summary

Method Summary

Methods inherited from class org.apache.openjpa.meta.Extensions

Methods inherited from class java.lang.Object

Field Detail

ID_UNKNOWN

ID_DATASTORE

ID_APPLICATION

ACCESS_UNKNOWN

ACCESS_FIELD

ACCESS_PROPERTY

ACCESS_EXPLICIT

SYNTHETIC

DEFAULT_STRING

Constructor Detail

ClassMetaData

ClassMetaData

Method Detail

getRepository

getEmbeddingMetaData

getDescribedType

getDescribedTypeString

setDescribedType

getEnvClassLoader

setEnvClassLoader

getPCSuperclass

setPCSuperclass

getPCSuperclassMetaData

setPCSuperclassMetaData

isMapped

getMappedPCSuperclassMetaData

getPCSubclasses

getPCSubclassMetaDatas

getMappedPCSubclassMetaDatas

getIdentityType

setIdentityType

getObjectIdType

setObjectIdType

isObjectIdTypeShared

isOpenJPAIdentity

getIdentityStrategy

setIdentityStrategy

getIdentitySequenceName

setIdentitySequenceName

getIdentitySequenceMetaData

getLifecycleMetaData

getTypeAlias

setTypeAlias

getAccessType

setAccessType

isExplicitAccess

isMixedAccess

getRequiresExtent

setRequiresExtent

isEmbeddedOnly

setEmbeddedOnly

isEmbeddable

setEmbeddable

isIntercepting

setIntercepting

isManagedInterface

setManagedInterface

getInterfaceImpl

setInterfaceImpl

getDeclaredInterfaces

addDeclaredInterface

removeDeclaredInterface

setInterfacePropertyAlias

getInterfacePropertyAlias

getInterfaceAliasedProperties

getExtraFieldDataLength

getExtraFieldDataIndex

isAccessibleField

getProxyFields