org.apache.openjpa.persistence
Class PersistenceProductDerivation

java.lang.Object
  extended by org.apache.openjpa.lib.conf.AbstractProductDerivation
      extended by 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.
 List getAnchorsInFile(File file)
          Return a List of all the anchors defined in file.
 List getAnchorsInResource(String resource)
          Return a List of all the anchors defined in resource.
 String getDefaultResourceLocation()
          Return a string identifying the default resource location for this product derivation, if one exists.
 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

getDefaultResourceLocation

public String getDefaultResourceLocation()
Description copied from interface: ProductDerivation
Return a string identifying the default resource location for this product derivation, if one exists. If there is no default location, returns null.

Specified by:
getDefaultResourceLocation in interface ProductDerivation
Overrides:
getDefaultResourceLocation in class AbstractProductDerivation

getAnchorsInFile

public List getAnchorsInFile(File file)
                      throws IOException
Description copied from interface: ProductDerivation
Return a List of all the anchors defined in file. The returned names are not fully-qualified, so must be used in conjunction with file in calls to ProductDerivation.load(java.io.File, String). Returns null or an empty list if no anchors could be found.

Specified by:
getAnchorsInFile in interface ProductDerivation
Overrides:
getAnchorsInFile in class AbstractProductDerivation
Throws:
IOException

getAnchorsInResource

public List getAnchorsInResource(String resource)
                          throws Exception
Description copied from interface: ProductDerivation
Return a List of all the anchors defined in resource. The returned names are not fully-qualified, so must be used in conjunction with resource in calls to ProductDerivation.load(java.io.File, String). Returns null or an empty list if no anchors could be found.

Specified by:
getAnchorsInResource in interface ProductDerivation
Overrides:
getAnchorsInResource in class AbstractProductDerivation
Throws:
Exception

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


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