Module org.datanucleus

Package org.datanucleus.metadata

Class ContainerMetaData

java.lang.Object

org.datanucleus.metadata.MetaData

org.datanucleus.metadata.ContainerMetaData

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ArrayMetaData, CollectionMetaData, MapMetaData

public class ContainerMetaData
extends MetaData

Representation of the Meta-Data for a container. This is subclassed by Array, Collection, and Map.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datanucleus.metadata.MetaData

EXTENSION_CLASS_CREATETIMESTAMP, EXTENSION_CLASS_CREATETIMESTAMP_COLUMN_NAME, EXTENSION_CLASS_CREATEUSER, EXTENSION_CLASS_CREATEUSER_COLUMN_LENGTH, EXTENSION_CLASS_CREATEUSER_COLUMN_NAME, EXTENSION_CLASS_MULTITENANCY_COLUMN_LENGTH, EXTENSION_CLASS_MULTITENANCY_COLUMN_NAME, EXTENSION_CLASS_MULTITENANCY_JDBC_TYPE, EXTENSION_CLASS_MULTITENANT, EXTENSION_CLASS_READ_ONLY, EXTENSION_CLASS_SOFTDELETE, EXTENSION_CLASS_SOFTDELETE_COLUMN_NAME, EXTENSION_CLASS_UPDATETIMESTAMP, EXTENSION_CLASS_UPDATETIMESTAMP_COLUMN_NAME, EXTENSION_CLASS_UPDATEUSER, EXTENSION_CLASS_UPDATEUSER_COLUMN_LENGTH, EXTENSION_CLASS_UPDATEUSER_COLUMN_NAME, EXTENSION_CLASS_VERSION_FIELD_NAME, EXTENSION_CLASS_VIEW_DEFINITION, EXTENSION_CLASS_VIEW_IMPORTS, EXTENSION_INDEX_COLUMN_ORDERING, EXTENSION_MEMBER_CACHEABLE, EXTENSION_MEMBER_CALENDAR_ONE_COLUMN, EXTENSION_MEMBER_CASCADE_ATTACH, EXTENSION_MEMBER_CASCADE_DETACH, EXTENSION_MEMBER_CASCADE_PERSIST, EXTENSION_MEMBER_CASCADE_REFRESH, EXTENSION_MEMBER_COMPARATOR_NAME, EXTENSION_MEMBER_CONTAINER_ALLOW_NULLS, EXTENSION_MEMBER_CREATE_TIMESTAMP, EXTENSION_MEMBER_CREATE_USER, EXTENSION_MEMBER_ENUM_VALUE_GETTER, EXTENSION_MEMBER_FETCH_FK_ONLY, EXTENSION_MEMBER_IMPLEMENTATION_CLASSES, EXTENSION_MEMBER_INSERTABLE, EXTENSION_MEMBER_KEY_IMPLEMENTATION_CLASSES, EXTENSION_MEMBER_LIST_ORDERING, EXTENSION_MEMBER_RELATION_DISCRIM_COLUMN, EXTENSION_MEMBER_RELATION_DISCRIM_PK, EXTENSION_MEMBER_RELATION_DISCRIM_VALUE, EXTENSION_MEMBER_STRATEGY_WHEN_NOTNULL, EXTENSION_MEMBER_TYPE_CONVERTER_DISABLED, EXTENSION_MEMBER_TYPE_CONVERTER_NAME, EXTENSION_MEMBER_UPDATE_TIMESTAMP, EXTENSION_MEMBER_UPDATE_USER, EXTENSION_MEMBER_UPDATEABLE, EXTENSION_MEMBER_VALUE_IMPLEMENTATION_CLASSES, EXTENSION_VERSION_NUMBER_INITIAL_VALUE, extensions, metaDataState, parent, VENDOR_NAME

Constructor Summary

Constructors

Constructor	Description
ContainerMetaData()	Constructor.
ContainerMetaData(ContainerMetaData contmd)	Copy constructor.

Method Summary

Modifier and Type	Method	Description
Boolean	allowNulls()	Whether this container allows nulls.
AbstractMemberMetaData	getMemberMetaData()	Accessor for the parent field/property MetaData.
String	getMemberName()	Accessor for the parent member name
void	populate()	Method to populate any defaults, and check the validity of the MetaData.

Methods inherited from class org.datanucleus.metadata.MetaData

addExtension, addExtensions, getExtensions, getMetaDataManager, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, initialise, isInitialised, isPopulated, isUsed, removeExtension, setExtensions, setParent

Methods inherited from class java.lang.Object

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

Constructor Detail

ContainerMetaData

public ContainerMetaData()

Constructor.

ContainerMetaData

public ContainerMetaData(ContainerMetaData contmd)

Copy constructor.

Parameters:

contmd - Container metadata to copy

Method Detail

populate

public void populate()

Method to populate any defaults, and check the validity of the MetaData.

allowNulls

public Boolean allowNulls()

Whether this container allows nulls. For a collection/array this is whether there can be null elements. For a map this whether there can be null keys AND values (really we ought to treat them independent, but not done like that currently).

Returns:

Whether nulls are allowed to be stored in the container

getMemberMetaData

public AbstractMemberMetaData getMemberMetaData()

Accessor for the parent field/property MetaData.

Returns:

Parent metadata

getMemberName

public String getMemberName()

Accessor for the parent member name

Returns:

Parent member name.