org.datanucleus.metadata
Class IdentityMetaData

java.lang.Object
  org.datanucleus.metadata.MetaData
      org.datanucleus.metadata.IdentityMetaData

All Implemented Interfaces:

java.io.Serializable, ColumnMetaDataContainer

public class IdentityMetaData
extends MetaData
implements ColumnMetaDataContainer

Meta-Data for the datastore-identity of a class. Provides a surrogate datastore field. Also defines the generation strategy for the identity values.

See Also:

Serialized Form

Field Summary

protected ColumnMetaData[]	columnMetaData Metadata for columns.
protected java.lang.String	columnName column name value.
protected java.lang.String	sequence sequence tag value.
protected IdentityStrategy	strategy strategy tag value.
protected java.lang.String	valueGeneratorName Name of a value generator if the user wants to override the default generator.

Fields inherited from class org.datanucleus.metadata.MetaData

extensions, LOCALISER, METADATA_CREATED_STATE, METADATA_INITIALISED_STATE, METADATA_POPULATED_STATE, METADATA_USED_STATE, metaDataState, parent, VENDOR_NAME, VENDOR_NAME_OLD

Constructor Summary

IdentityMetaData()
Default constructor.

Method Summary

void	addColumn(ColumnMetaData colmd) Add a new ColumnMetaData element
ColumnMetaData[]	getColumnMetaData() Accessor for columnMetaData
java.lang.String	getColumnName() Accessor for the column name.
java.lang.String	getSequence() Accessor for the sequence name
java.lang.String	getValueGeneratorName() Name of a (user-provided) value generator to override the default generator for this strategy.
IdentityStrategy	getValueStrategy() Accessor for the strategy tag value
void	initialise(ClassLoaderResolver clr, MetaDataManager mmgr) Method to initialise all internal convenience arrays needed.
ColumnMetaData	newColumnMetaData() Method to create a new ColumnMetaData, add it, and return it.
IdentityMetaData	setColumnName(java.lang.String columnName)
IdentityMetaData	setSequence(java.lang.String sequence)
IdentityMetaData	setValueGeneratorName(java.lang.String generator) Mutator for the name of the value generator to use for this strategy.
IdentityMetaData	setValueStrategy(IdentityStrategy strategy)
java.lang.String	toString(java.lang.String prefix, java.lang.String indent) Returns a string representation of the object using a prefix

Methods inherited from class org.datanucleus.metadata.MetaData

addExtension, addExtension, assertIfInitialised, getExtensions, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, isInitialised, isPopulated, isUsed, newExtensionMetaData, removeExtension, setParent, toString

Methods inherited from class java.lang.Object

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

Field Detail

columnName

protected java.lang.String columnName

column name value.

strategy

protected IdentityStrategy strategy

strategy tag value.

sequence

protected java.lang.String sequence

sequence tag value.

valueGeneratorName

protected java.lang.String valueGeneratorName

Name of a value generator if the user wants to override the default generator.

columnMetaData

protected ColumnMetaData[] columnMetaData

Metadata for columns.

Constructor Detail

IdentityMetaData

public IdentityMetaData()

Default constructor. Set fields using setters, before populate().

Method Detail

initialise

public void initialise(ClassLoaderResolver clr,
                       MetaDataManager mmgr)

Method to initialise all internal convenience arrays needed.

Overrides:

initialise in class MetaData

addColumn

public void addColumn(ColumnMetaData colmd)

Add a new ColumnMetaData element

Specified by:

addColumn in interface ColumnMetaDataContainer

Parameters:

colmd - The ColumnMetaData to add

newColumnMetaData

public ColumnMetaData newColumnMetaData()

Method to create a new ColumnMetaData, add it, and return it.

Returns:

The Column metadata

getColumnMetaData

public final ColumnMetaData[] getColumnMetaData()

Accessor for columnMetaData

Specified by:

getColumnMetaData in interface ColumnMetaDataContainer

Returns:

Returns the columnMetaData.

getColumnName

public java.lang.String getColumnName()

Accessor for the column name.

Returns:

column name

setColumnName

public IdentityMetaData setColumnName(java.lang.String columnName)

Parameters:

columnName - the columnName to set

getValueStrategy

public IdentityStrategy getValueStrategy()

Accessor for the strategy tag value

Returns:

strategy tag value

setValueStrategy

public IdentityMetaData setValueStrategy(IdentityStrategy strategy)

Parameters:

strategy - the strategy to set

getSequence

public java.lang.String getSequence()

Accessor for the sequence name

Returns:

sequence name

setSequence

public IdentityMetaData setSequence(java.lang.String sequence)

Parameters:

sequence - the sequence to set

getValueGeneratorName

public java.lang.String getValueGeneratorName()

Name of a (user-provided) value generator to override the default generator for this strategy.

Returns:

Name of user provided value generator

setValueGeneratorName

public IdentityMetaData setValueGeneratorName(java.lang.String generator)

Mutator for the name of the value generator to use for this strategy.

Parameters:

generator - Name of value generator

toString

public java.lang.String toString(java.lang.String prefix,
                                 java.lang.String indent)

Returns a string representation of the object using a prefix

Overrides:

toString in class MetaData

Parameters:

prefix - prefix string

indent - indent string

Returns:

a string representation of the object.