org.apache.openjpa.meta
Interface MetaDataFactory

All Superinterfaces:

MetaDataModes

All Known Implementing Classes:

AbstractCFMetaDataFactory, AbstractMetaDataFactory, DelegatingMetaDataFactory, MetaDataPlusMappingFactory, NoneMetaDataFactory, PersistenceMappingFactory, PersistenceMetaDataFactory

public interface MetaDataFactory
extends MetaDataModes

The MetaDataRepository uses implementations of this interface to load and store metadata. Implementations need not be threadsafe.

Author:

Patrick Linskey, Abe White

Field Summary

static int	STORE_DEFAULT
static int	STORE_PER_CLASS
static int	STORE_VERBOSE

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

MODE_MAPPING, MODE_MAPPING_INIT, MODE_META, MODE_NONE, MODE_QUERY

Method Summary

void	addClassExtensionKeys(Collection exts) Add any extension keys used by this instance to the given set.
void	addFieldExtensionKeys(Collection exts) Add any extension keys used by this instance to the given set.
void	clear() Clear any internal caches.
boolean	drop(Class[] cls, int mode, ClassLoader envLoader) Drop the metadata for the given classes in the given mode(s).
MetaDataDefaults	getDefaults() Return the metadata defaults for this factory.
Set	getPersistentTypeNames(boolean devpath, ClassLoader envLoader) Return all persistent class names, using the metadata locations supplied in configuration, optionally scanning the classpath.
Class	getQueryScope(String queryName, ClassLoader loader) Return the type defining the given query name, if any.
void	load(Class cls, int mode, ClassLoader envLoader) Load metadata for the given class in the given mode(s).
ClassArgParser	newClassArgParser() Return a properly-configured class arg parser for our expected metadata format.
void	setRepository(MetaDataRepository repos) Set the repository to load metadata into.
void	setStoreDirectory(File dir) Base directory for storing metadata.
void	setStoreMode(int store) Storage mode.
void	setStrict(boolean strict) If true, I/O's must exactly obey the mode directives given, and may not load additional information.
boolean	store(ClassMetaData[] metas, QueryMetaData[] queries, SequenceMetaData[] seqs, int mode, Map output) Store the given metadata.

Field Detail

STORE_DEFAULT

static final int STORE_DEFAULT

See Also:

Constant Field Values

STORE_PER_CLASS

static final int STORE_PER_CLASS

See Also:

Constant Field Values

STORE_VERBOSE

static final int STORE_VERBOSE

See Also:

Constant Field Values

Method Detail

setRepository

void setRepository(MetaDataRepository repos)

Set the repository to load metadata into. This method will be called before use.

setStoreDirectory

void setStoreDirectory(File dir)

Base directory for storing metadata. May not be called.

setStoreMode

void setStoreMode(int store)

Storage mode. May not be called.

setStrict

void setStrict(boolean strict)

If true, I/O's must exactly obey the mode directives given, and may not load additional information.

load

void load(Class cls,
          int mode,
          ClassLoader envLoader)

Load metadata for the given class in the given mode(s). If loading in MetaDataModes.MODE_QUERY, the class may be null. Loaded metadata should be added directly to the repository. It should have its source mode set appropriately via ClassMetaData.setSourceMode(int).

Parameters:

mode - the mode to load metadata in: if mapping information is stored together with metadata, then you can load mapping data even if this mode only includes MODE_META, so long as the strict property hasn't been set

store

boolean store(ClassMetaData[] metas,
              QueryMetaData[] queries,
              SequenceMetaData[] seqs,
              int mode,
              Map output)

Store the given metadata.

Parameters:

mode - hint about what aspects of the metadata have changed

output - if non-null, rather than storing metadata directly, add entries mapping each output destination such as a File to the planned output for that destination in string form

Returns:

false if this factory is unable to store metadata

drop

boolean drop(Class[] cls,
             int mode,
             ClassLoader envLoader)

Drop the metadata for the given classes in the given mode(s).

Returns:

false if any metadata could not be dropped

getDefaults

MetaDataDefaults getDefaults()

Return the metadata defaults for this factory.

getPersistentTypeNames

Set getPersistentTypeNames(boolean devpath,
                           ClassLoader envLoader)

Return all persistent class names, using the metadata locations supplied in configuration, optionally scanning the classpath. Return null if no types are supplied and this factory is unable to scan the classpath. This method should not be used directly by outside code; use MetaDataRepository.getPersistentTypeNames(boolean, java.lang.ClassLoader) instead.

See Also:

MetaDataRepository.getPersistentTypeNames(boolean, java.lang.ClassLoader), MetaDataRepository.loadPersistentTypes(boolean, java.lang.ClassLoader)

getQueryScope

Class getQueryScope(String queryName,
                    ClassLoader loader)

Return the type defining the given query name, if any.

newClassArgParser

ClassArgParser newClassArgParser()

Return a properly-configured class arg parser for our expected metadata format.

clear

void clear()

Clear any internal caches.

addClassExtensionKeys

void addClassExtensionKeys(Collection exts)

Add any extension keys used by this instance to the given set.

addFieldExtensionKeys

void addFieldExtensionKeys(Collection exts)

Add any extension keys used by this instance to the given set.