Package com.sun.jdo.api.persistence.enhancer.meta

Interface JDOMetaData

All Known Subinterfaces:

ExtendedJDOMetaData

All Known Implementing Classes:

JDOMetaDataModelImpl, JDOMetaDataPropertyImpl, JDOMetaDataTimer

public interface JDOMetaData

Provides the JDO meta information neccessary for byte-code enhancement.

Please note: This interface deals with fully qualified names in the JVM notation, that is, with '/' as package separator character (instead of '.').

The following convention is used to specify the format of a given name: Something called ...

• name represents a non-qualified name (e.g. JDOPersistenceCapableName = "PersistenceCapable")
• type represents a Java-qualified class name (e.g. JDOPersistenceCapablePath = 'com.sun.jdo.spi.persistence.support.sqlstore.PersistenceCapable")
• path represents a JVM-qualified name (e.g. JDOPersistenceCapablePath = 'com/sun/jdo/spi/persistence/support/sqlstore/PersistenceCapable")
• sig (for signature) represents a JVM-qualified type-signature name (e.g. JDOPersistenceCapableSig = "Lcom/sun/jdo/spi/persistence/support/sqlstore/PersistenceCapable;")

Field Summary

Fields

Modifier and Type	Field	Description
static final String	javaLangCloneablePath
static final String	JDOExternalPath
static final String	JDOFlagsFieldName
static final String	JDOFlagsFieldSig
static final String	JDOFlagsFieldType
static final String	JDOInstanceCallbacksName
static final String	JDOInstanceCallbacksPath
static final String	JDOInstanceCallbacksSig
static final String	JDOInstanceCallbacksType
static final String	JDOPath
static final String	JDOPersistenceCapableName
static final String	JDOPersistenceCapablePath
static final String	JDOPersistenceCapableSig
static final String	JDOPersistenceCapableType
static final String	JDOPersistenceManagerName
static final String	JDOPersistenceManagerPath
static final String	JDOPersistenceManagerSig
static final String	JDOPersistenceManagerType
static final String	JDOSecondClassObjectBaseName
static final String	JDOSecondClassObjectBasePath
static final String	JDOSecondClassObjectBaseSig
static final String	JDOSecondClassObjectBaseType
static final String	JDOStateManagerFieldName
static final String	JDOStateManagerFieldSig
static final String	JDOStateManagerFieldType
static final String	JDOStateManagerName
static final String	JDOStateManagerPath
static final String	JDOStateManagerSig
static final String	JDOStateManagerType

Method Summary

Modifier and Type	Method	Description
int	getFieldNo(String classPath, String fieldName)	Returns the unique field index of a declared, persistent field of a class.
String[]	getManagedFields(String classPath)	Returns an array of field names of all declared persistent and transactional fields of a class.
String	getPersistenceCapableRootClass(String classPath)	Returns the name of the persistence-capable root class of a class.
String	getSuperClass(String classPath)	Returns the name of the superclass of a class.
boolean	isDefaultFetchGroupField(String classPath, String fieldName)	Tests whether a field of a class is known to be part of the Default Fetch Group.
boolean	isMutableSecondClassObjectType(String classPath)	Tests whether a class is known as type for Mutable Second Class Objects.
boolean	isPersistenceCapableClass(String classPath)	Tests whether a class is known to be persistence-capable.
boolean	isPersistenceCapableRootClass(String classPath)	Tests whether a class is known as a persistence-capable root class.
boolean	isPersistentField(String classPath, String fieldName)	Tests whether a field of a class is known to be persistent.
boolean	isPrimaryKeyField(String classPath, String fieldName)	Tests whether a field of a class is known to be Primary Key.
boolean	isSecondClassObjectType(String classPath)	Tests whether a class is known as type for Second Class Objects.
boolean	isTransactionalField(String classPath, String fieldName)	Tests whether a field of a class is known to be transactional.
boolean	isTransientClass(String classPath)	Tests whether a class is known to be transient.

Field Details

JDOExternalPath

static final String JDOExternalPath

See Also:

• Constant Field Values

JDOPath

static final String JDOPath

See Also:

• Constant Field Values

JDOPersistenceCapableName

static final String JDOPersistenceCapableName

See Also:

• Constant Field Values

JDOPersistenceCapablePath

static final String JDOPersistenceCapablePath

See Also:

• Constant Field Values

JDOPersistenceCapableSig

static final String JDOPersistenceCapableSig

See Also:

• Constant Field Values

JDOPersistenceCapableType

static final String JDOPersistenceCapableType

javaLangCloneablePath

static final String javaLangCloneablePath

See Also:

• Constant Field Values

JDOInstanceCallbacksName

static final String JDOInstanceCallbacksName

See Also:

• Constant Field Values

JDOInstanceCallbacksPath

static final String JDOInstanceCallbacksPath

See Also:

• Constant Field Values

JDOInstanceCallbacksSig

static final String JDOInstanceCallbacksSig

See Also:

• Constant Field Values

JDOInstanceCallbacksType

static final String JDOInstanceCallbacksType

JDOSecondClassObjectBaseName

static final String JDOSecondClassObjectBaseName

See Also:

• Constant Field Values

JDOSecondClassObjectBasePath

static final String JDOSecondClassObjectBasePath

See Also:

• Constant Field Values

JDOSecondClassObjectBaseSig

static final String JDOSecondClassObjectBaseSig

See Also:

• Constant Field Values

JDOSecondClassObjectBaseType

static final String JDOSecondClassObjectBaseType

JDOPersistenceManagerName

static final String JDOPersistenceManagerName

See Also:

• Constant Field Values

JDOPersistenceManagerPath

static final String JDOPersistenceManagerPath

See Also:

• Constant Field Values

JDOPersistenceManagerSig

static final String JDOPersistenceManagerSig

See Also:

• Constant Field Values

JDOPersistenceManagerType

static final String JDOPersistenceManagerType

JDOStateManagerName

static final String JDOStateManagerName

See Also:

• Constant Field Values

JDOStateManagerPath

static final String JDOStateManagerPath

See Also:

• Constant Field Values

JDOStateManagerSig

static final String JDOStateManagerSig

See Also:

• Constant Field Values

JDOStateManagerType

static final String JDOStateManagerType

JDOStateManagerFieldName

static final String JDOStateManagerFieldName

See Also:

• Constant Field Values

JDOStateManagerFieldType

static final String JDOStateManagerFieldType

JDOStateManagerFieldSig

static final String JDOStateManagerFieldSig

See Also:

• Constant Field Values

JDOFlagsFieldName

static final String JDOFlagsFieldName

See Also:

• Constant Field Values

JDOFlagsFieldType

static final String JDOFlagsFieldType

See Also:

• Constant Field Values

JDOFlagsFieldSig

static final String JDOFlagsFieldSig

See Also:

• Constant Field Values

Method Details

isTransientClass

boolean isTransientClass(String classPath)
                  throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a class is known to be transient.

The following invariant holds: isTransientClass(classPath) => !isPersistenceCapableClass(classPath)

Parameters:

classPath - the JVM-qualified name of the class

Returns:

true if this class is known to be transient; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isPersistenceCapableClass

boolean isPersistenceCapableClass(String classPath)
                           throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a class is known to be persistence-capable.

The following invariant holds: isPersistenceCapableClass(classPath) => !isTransientClass(classPath) && !isSecondClassObjectType(classPath)

Parameters:

classPath - the JVM-qualified name of the class

Returns:

true if this class is persistence-capable; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isPersistenceCapableRootClass

boolean isPersistenceCapableRootClass(String classPath)
                               throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a class is known as a persistence-capable root class.

Parameters:

classPath - the JVM-qualified name of the class

Returns:

true if this class is persistence-capable and does not derive from another persistence-capable class; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

getPersistenceCapableRootClass

String getPersistenceCapableRootClass(String classPath)
                               throws JDOMetaDataUserException,
JDOMetaDataFatalError

Returns the name of the persistence-capable root class of a class.

Parameters:

classPath - the JVM-qualified name of the class

Returns:

the name of the least-derived persistence-capable class that is equal to or a super class of the argument class; if the argument class is not persistence-capable, null is returned.

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

getSuperClass

String getSuperClass(String classPath)
              throws JDOMetaDataUserException,
JDOMetaDataFatalError

Returns the name of the superclass of a class.

Parameters:

classPath - the JVM-qualified name of the class

Returns:

the name of the superclass.

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isSecondClassObjectType

boolean isSecondClassObjectType(String classPath)
                         throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a class is known as type for Second Class Objects.

The following invariant holds: isSecondClassObjectType(classPath) => !isPersistenceCapableClass(classPath)

Parameters:

classPath - the JVM-qualified name of the type

Returns:

true if this type is known for second class objects; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isMutableSecondClassObjectType

boolean isMutableSecondClassObjectType(String classPath)
                                throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a class is known as type for Mutable Second Class Objects.

Parameters:

classPath - the JVM-qualified name of the type

Returns:

true if this type is known for mutable second class objects; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isPersistentField

boolean isPersistentField(String classPath,
 String fieldName)
                   throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a field of a class is known to be persistent.

Parameters:

classPath - the JVM-qualified name of the class

fieldName - the name of the field

Returns:

true if this field is known to be persistent; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isTransactionalField

boolean isTransactionalField(String classPath,
 String fieldName)
                      throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a field of a class is known to be transactional.

Parameters:

classPath - the JVM-qualified name of the class

fieldName - the name of the field

Returns:

true if this field is known to be transactional; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isPrimaryKeyField

boolean isPrimaryKeyField(String classPath,
 String fieldName)
                   throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a field of a class is known to be Primary Key.

Parameters:

classPath - the JVM-qualified name of the class

fieldName - the name of the field

Returns:

true if this field is known to be primary key; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

isDefaultFetchGroupField

boolean isDefaultFetchGroupField(String classPath,
 String fieldName)
                          throws JDOMetaDataUserException,
JDOMetaDataFatalError

Tests whether a field of a class is known to be part of the Default Fetch Group.

Parameters:

classPath - the JVM-qualified name of the class

fieldName - the name of the field

Returns:

true if this field is known to be part of the default fetch group; otherwise false

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

getFieldNo

int getFieldNo(String classPath,
 String fieldName)
        throws JDOMetaDataUserException,
JDOMetaDataFatalError

Returns the unique field index of a declared, persistent field of a class.

Parameters:

classPath - the JVM-qualified name of the class

fieldName - the name of the field

Returns:

the non-negative, unique field index

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError

getManagedFields

String[] getManagedFields(String classPath)
                   throws JDOMetaDataUserException,
JDOMetaDataFatalError

Returns an array of field names of all declared persistent and transactional fields of a class.

The position of the field names in the result array corresponds to their unique field index as returned by getFieldNo such that these equations holds:

getFieldNo(getManagedFields(classPath)[i]) == i

getManagedFields(classPath)[getFieldNo(fieldName)] == fieldName

Parameters:

classPath - the JVM-qualified name of the class

Returns:

an array of all declared persistent and transactional fields of a class

Throws:

JDOMetaDataUserException

JDOMetaDataFatalError