org.datanucleus.metadata

Class ArrayMetaData

java.lang.Object

org.datanucleus.metadata.MetaData

org.datanucleus.metadata.ContainerMetaData

org.datanucleus.metadata.ArrayMetaData

All Implemented Interfaces:

Serializable

public class ArrayMetaData
extends ContainerMetaData

Representation of the Meta-Data for an Array.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected org.datanucleus.metadata.ContainerComponent	element Representation of the element of the array.
protected boolean	mayContainPersistableElements wether this array may contain persistable elements

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

Constructors

Constructor and Description
ArrayMetaData() Default constructor.
ArrayMetaData(ArrayMetaData arrmd) Constructor to create a copy of the passed metadata.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	elementIsPersistent()
AbstractClassMetaData	getElementClassMetaData(ClassLoaderResolver clr, MetaDataManager mmgr) Convenience accessor for the Element ClassMetaData.
String	getElementType() Accessor for the element implementation types (when element is a reference type).
boolean	isDependentElement() Accessor for The dependent-element attribute indicates that the collection's element contains a reference that is to be deleted if the referring instance is deleted.
boolean	isEmbeddedElement() Accessor for the embedded-element value
boolean	isSerializedElement() Accessor for the serialized-element tag value
boolean	mayContainPersistableElements() Returns whether this array may contain persistable elements (as indicated by the user).
void	populate(ClassLoaderResolver clr, ClassLoader primary, MetaDataManager mmgr) Method to populate any defaults, and check the validity of the MetaData.
ArrayMetaData	setDependentElement(boolean dependent)
ArrayMetaData	setElementType(String type)
ArrayMetaData	setEmbeddedElement(boolean embedded)
ArrayMetaData	setSerializedElement(boolean serialized)
String	toString(String prefix, String indent) Returns a string representation of the object.

Methods inherited from class org.datanucleus.metadata.ContainerMetaData

allowNulls, getFieldName, getMemberMetaData

Methods inherited from class org.datanucleus.metadata.MetaData

addExtension, addExtension, assertIfInitialised, getExtensions, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, initialise, 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

element

protected org.datanucleus.metadata.ContainerComponent element

Representation of the element of the array.

mayContainPersistableElements

protected boolean mayContainPersistableElements

wether this array may contain persistable elements

Constructor Detail

ArrayMetaData

public ArrayMetaData(ArrayMetaData arrmd)

Constructor to create a copy of the passed metadata.

Parameters:

arrmd - The metadata to copy

ArrayMetaData

public ArrayMetaData()

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

Method Detail

populate

public void populate(ClassLoaderResolver clr,
            ClassLoader primary,
            MetaDataManager mmgr)

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

Overrides:

populate in class ContainerMetaData

Parameters:

clr - ClassLoaderResolver to use in loading any classes

primary - the primary ClassLoader to use (or null)

mmgr - MetaData manager

getElementType

public String getElementType()

Accessor for the element implementation types (when element is a reference type). The return can contain comma-separated values.

Returns:

element implementation types

elementIsPersistent

public boolean elementIsPersistent()

getElementClassMetaData

public AbstractClassMetaData getElementClassMetaData(ClassLoaderResolver clr,
                                            MetaDataManager mmgr)

Convenience accessor for the Element ClassMetaData.

Parameters:

clr - ClassLoader resolver (in case we need to initialise it)

mmgr - MetaData manager (in case we need to initialise it)

Returns:

element ClassMetaData

mayContainPersistableElements

public boolean mayContainPersistableElements()

Returns whether this array may contain persistable elements (as indicated by the user). TODO Remove this. The element-type of the array defines such things and this is not the solution

Returns:

whether this array may contain persistable elements

isEmbeddedElement

public boolean isEmbeddedElement()

Accessor for the embedded-element value

Returns:

embedded-element value

isSerializedElement

public boolean isSerializedElement()

Accessor for the serialized-element tag value

Returns:

serialized-element tag value

isDependentElement

public boolean isDependentElement()

Accessor for The dependent-element attribute indicates that the collection's element contains a reference that is to be deleted if the referring instance is deleted.

Returns:

dependent-element tag value

setElementType

public ArrayMetaData setElementType(String type)

setEmbeddedElement

public ArrayMetaData setEmbeddedElement(boolean embedded)

setSerializedElement

public ArrayMetaData setSerializedElement(boolean serialized)

setDependentElement

public ArrayMetaData setDependentElement(boolean dependent)

toString

public String toString(String prefix,
              String indent)

Returns a string representation of the object.

Overrides:

toString in class MetaData

Parameters:

prefix - The prefix string

indent - The indent string

Returns:

a string representation of the object.