org.apache.openjpa.persistence
Class PersistenceProductDerivation

java.lang.Object
  org.apache.openjpa.lib.conf.AbstractProductDerivation
      org.apache.openjpa.persistence.PersistenceProductDerivation

All Implemented Interfaces:

OpenJPAProductDerivation, ProductDerivation

public class PersistenceProductDerivation
extends AbstractProductDerivation
implements OpenJPAProductDerivation

Sets JPA specification defaults and parses JPA specification XML files. For globals, looks in openjpa.properties system property for the location of a file to parse. If no system property is defined, the default resource location of META-INF/openjpa.xml is used. For defaults, looks for META-INF/persistence.xml. Within persistence.xml, look for the named persistence unit, or if no name given, an OpenJPA unit (preferring an unnamed OpenJPA unit to a named one).

Author:

Abe White

Nested Class Summary

static class	PersistenceProductDerivation.ConfigurationParser SAX handler capable of parsing an JPA persistence.xml file.
static class	PersistenceProductDerivation.ConfigurationProviderImpl Custom configuration provider.

Field Summary

static String	ALIAS_EJB
static String	RSRC_DEFAULT
static String	RSRC_GLOBAL
static String	SPEC_JPA

Fields inherited from interface org.apache.openjpa.conf.OpenJPAProductDerivation

TYPE_PRODUCT_STORE, TYPE_SPEC, TYPE_SPEC_STORE, TYPE_STORE

Fields inherited from interface org.apache.openjpa.lib.conf.ProductDerivation

TYPE_FEATURE, TYPE_PRODUCT

Constructor Summary

PersistenceProductDerivation()

Method Summary

boolean	afterSpecificationSet(Configuration c) Called after the specification has been set.
boolean	beforeConfigurationLoad(Configuration c) Provides the instance with the opportunity to mutate conf before the user configuration is applied.
int	getType() Return the type of derivation.
ConfigurationProvider	load(File file, String anchor) Load given file, or return null if it is not a file this receiver understands.
ConfigurationProvider	load(PersistenceUnitInfo pinfo, Map m) Load configuration from the given persistence unit with the specified user properties.
ConfigurationProvider	load(String rsrc, String anchor, ClassLoader loader) Load the given given resource into the returned ConfigurationProvider, or return null if it is not a resource this receiver understands.
ConfigurationProvider	load(String rsrc, String name, Map m) Load configuration from the given resource and unit names, which may be null.
ConfigurationProvider	loadDefaults(ClassLoader loader) Load defaults into the returned ConfigurationProvider, or return null if no defaults are found.
ConfigurationProvider	loadGlobals(ClassLoader loader) Load globals into the returned ConfigurationProvider, or return null if no globals are found.
void	putBrokerFactoryAliases(Map m) Load default alias options into the given map.
void	validate() Ensure that this derivation is valid.

Methods inherited from class org.apache.openjpa.lib.conf.AbstractProductDerivation

beforeConfigurationClose, beforeConfigurationConstruct, getConfigurationPrefix

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.lib.conf.ProductDerivation

beforeConfigurationClose, beforeConfigurationConstruct, getConfigurationPrefix

Field Detail

SPEC_JPA

public static final String SPEC_JPA

See Also:

Constant Field Values

ALIAS_EJB

public static final String ALIAS_EJB

See Also:

Constant Field Values

RSRC_GLOBAL

public static final String RSRC_GLOBAL

See Also:

Constant Field Values

RSRC_DEFAULT

public static final String RSRC_DEFAULT

See Also:

Constant Field Values

Constructor Detail

PersistenceProductDerivation

public PersistenceProductDerivation()

Method Detail

putBrokerFactoryAliases

public void putBrokerFactoryAliases(Map m)

Description copied from interface: OpenJPAProductDerivation

Load default alias options into the given map. Each entry maps an alias to a broker factory class name. Replace anything previously under the desired keys.

Specified by:

putBrokerFactoryAliases in interface OpenJPAProductDerivation

getType

public int getType()

Description copied from interface: ProductDerivation

Return the type of derivation.

Specified by:

getType in interface ProductDerivation

validate

public void validate()
              throws Exception

Description copied from interface: ProductDerivation

Ensure that this derivation is valid. This action might consist of loading classes for the product this derivation represents to be sure they exist. Throw any throwable to indicate an invalid derivation. Invalid derivations will not be used.

Specified by:

validate in interface ProductDerivation

Overrides:

validate in class AbstractProductDerivation

Throws:

Exception

beforeConfigurationLoad

public boolean beforeConfigurationLoad(Configuration c)

Description copied from interface: ProductDerivation

Provides the instance with the opportunity to mutate conf before the user configuration is applied.

Specified by:

beforeConfigurationLoad in interface ProductDerivation

Overrides:

beforeConfigurationLoad in class AbstractProductDerivation

Returns:

true if given Configuration has been mutated.

afterSpecificationSet

public boolean afterSpecificationSet(Configuration c)

Description copied from interface: ProductDerivation

Called after the specification has been set.

Specified by:

afterSpecificationSet in interface ProductDerivation

Overrides:

afterSpecificationSet in class AbstractProductDerivation

Returns:

true if given Configuration has been mutated.

load

public ConfigurationProvider load(PersistenceUnitInfo pinfo,
                                  Map m)
                           throws IOException

Load configuration from the given persistence unit with the specified user properties.

Throws:

IOException

load

public ConfigurationProvider load(String rsrc,
                                  String name,
                                  Map m)
                           throws IOException

Load configuration from the given resource and unit names, which may be null.

Throws:

IOException

load

public ConfigurationProvider load(String rsrc,
                                  String anchor,
                                  ClassLoader loader)
                           throws IOException

Description copied from interface: ProductDerivation

Load the given given resource into the returned ConfigurationProvider, or return null if it is not a resource this receiver understands. The given class loader may be null.

Specified by:

load in interface ProductDerivation

Overrides:

load in class AbstractProductDerivation

anchor - optional named anchor within a multiple-configuration resource

Throws:

IOException

load

public ConfigurationProvider load(File file,
                                  String anchor)
                           throws IOException

Description copied from interface: ProductDerivation

Load given file, or return null if it is not a file this receiver understands.

Specified by:

load in interface ProductDerivation

Overrides:

load in class AbstractProductDerivation

anchor - optional named anchor within a multiple-configuration file

Throws:

IOException

loadGlobals

public ConfigurationProvider loadGlobals(ClassLoader loader)
                                  throws IOException

Description copied from interface: ProductDerivation

Load globals into the returned ConfigurationProvider, or return null if no globals are found.

Specified by:

loadGlobals in interface ProductDerivation

Overrides:

loadGlobals in class AbstractProductDerivation

Throws:

IOException

loadDefaults

public ConfigurationProvider loadDefaults(ClassLoader loader)
                                   throws IOException

Description copied from interface: ProductDerivation

Load defaults into the returned ConfigurationProvider, or return null if no defaults are found.

Specified by:

loadDefaults in interface ProductDerivation

Overrides:

loadDefaults in class AbstractProductDerivation

Throws:

IOException