org.eclipse.persistence.core.queries

Class CoreAttributeGroup<ATTRIBUTE_ITEM extends CoreAttributeItem>

java.lang.Object

org.eclipse.persistence.core.queries.CoreAttributeGroup<ATTRIBUTE_ITEM>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

AttributeGroup

public class CoreAttributeGroup<ATTRIBUTE_ITEM extends CoreAttributeItem>
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable

INTERNAL Purpose: A generic super class for AttributeGroup and other subclasses

See Also:

AttributeGroup, Serialized Form

Author:

Matt MacIvor

Since:

EclipseLink 2.5

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map<java.lang.Object,CoreAttributeGroup>	allsubclasses This attribute is used to store all of the classes in this hierarchy keyed by type.
protected boolean	isValidated Marks this AttributeGroup as having been validated by the builder and does not require further validation
protected java.util.Map<java.lang.String,ATTRIBUTE_ITEM>	items Specified attributes in the group mapped to their AttributeItems
protected java.lang.String	name Name of the group.
protected java.util.Set<CoreAttributeGroup>	subClasses This attribute references the immediate subclass groups for this attributeGroup.
protected CoreAttributeGroup	superClassGroup To add inheritance support the two following attrbutes are used to create a model of the inheritance tree This attribute points to the parent AttributeGroup of this attribute group.
protected java.lang.Class	type The class represented by this AttrbuteGroup.
protected java.lang.String	typeName The name of the class represented by this AttrbuteGroup.

Constructor Summary

Constructors

Constructor and Description
CoreAttributeGroup()
CoreAttributeGroup(java.lang.String name)
CoreAttributeGroup(java.lang.String name, java.lang.Class type, boolean isValidated) INTERNAL: This constructer is to only be used by EclipseLink internally
CoreAttributeGroup(java.lang.String name, java.lang.String type, boolean isValidated)

Method Summary

Methods

Modifier and Type	Method and Description
void	addAttribute(java.lang.String attributeNameOrPath) Add a basic attribute or nested attribute with each String representing an attribute on the path to what needs to be included in the AttributeGroup.
void	addAttribute(java.lang.String attributeNameOrPath, java.util.Collection<? extends CoreAttributeGroup> groups) Add an attribute and the corresponding list of AttributeGroups.
void	addAttribute(java.lang.String attributeNameOrPath, CoreAttributeGroup group) Add a basic attribute or nested attribute with each String representing an attribute on the path to what needs to be included in the AttributeGroup.
void	addAttributeKey(java.lang.String attributeNameOrPath, CoreAttributeGroup group) Add a basic attribute or nested attribute with each String representing the key of an attribute of type Map on the path to what needs to be included in the AttributeGroup.
void	addAttributes(java.util.Collection<java.lang.String> attrOrPaths) Add a set of attributes to the group.
CoreAttributeGroup	clone()
CoreAttributeGroup	clone(java.util.Map<CoreAttributeGroup<ATTRIBUTE_ITEM>,CoreAttributeGroup<ATTRIBUTE_ITEM>> cloneMap) INTERNAL: This method is used internally in the clone processing.
boolean	containsAttribute(java.lang.String attributeNameOrPath) Return if the attribute is defined in the group.
boolean	containsAttributeInternal(java.lang.String attributeName) INTERNAL: Return if the attribute is defined in the group.
protected java.lang.String[]	convert(java.lang.String... nameOrPath) Convert a provided name or path which could be a single attributeName, a single string with dot separated attribute names, or an array of attribute names defining the path.
void	convertClassNamesToClasses(java.lang.ClassLoader classLoader) INTERNAL: Convert all the class-name-based settings in this Descriptor to actual class-based settings.
boolean	equals(java.lang.Object obj)
CoreAttributeGroup	findGroup(ClassDescriptor type)
java.util.Map<java.lang.String,ATTRIBUTE_ITEM>	getAllItems() INTERNAL:
java.util.Set<java.lang.String>	getAttributeNames()
CoreAttributeGroup	getGroup(java.lang.String attributeNameOrPath) Returns AttributeGroup corresponding to the passed (possibly nested) attribute.
ATTRIBUTE_ITEM	getItem(java.lang.String attributeNameOrPath) INTERNAL: Lookup the AttributeItemfor the provided attribute name or path.
protected ATTRIBUTE_ITEM	getItem(java.lang.String[] attributePath, boolean create) Locate the AttributeGroup where the leaf attribute in the path should be applied to.
java.util.Map<java.lang.String,ATTRIBUTE_ITEM>	getItems() INTERNAL:
java.lang.String	getName()
java.util.Map<java.lang.Object,CoreAttributeGroup>	getSubClassGroups() INTERNAL:
java.lang.Class	getType()
java.lang.String	getTypeName() INTERNAL: Returns the name of the type this group represents
boolean	hasInheritance() Indicates whether this group is part of an inheritance hierarchy
boolean	hasItems() Indicates whether the group has at least one attribute.
void	insertSubClass(CoreAttributeGroup group) INTERNAL: This method will insert the group into the entity hierarchy just below this AttributeGroup.
boolean	isConcurrent() INTERNAL: Only LoadGroups allow concurrency.
boolean	isCopyGroup() INTERNAL: This method is used internally when converting to a copy group.
boolean	isFetchGroup()
boolean	isLoadGroup()
boolean	isSupersetOf(CoreAttributeGroup<ATTRIBUTE_ITEM> anotherGroup) Return true if this AttributeGroup is a super-set of the passed in AttributeGroup.
boolean	isValidated() INTERNAL:
protected CoreAttributeGroup	newGroup(java.lang.String name, CoreAttributeGroup parent) Subclass may create different types.
protected CoreAttributeItem	newItem(CoreAttributeGroup group, java.lang.String attrName) Subclass may create different types.
void	removeAttribute(java.lang.String attributeNameOrPath) Remove an attribute from the group.
void	setAllSubclasses(java.util.Map<java.lang.Object,CoreAttributeGroup> subclasses) INTERNAL:
void	setAttributeNames(java.util.Set attributeNames)
void	setName(java.lang.String name)
java.lang.String	toString()
protected java.lang.String	toStringAdditionalInfo() Used by toString to print additional info for derived classes.
protected java.lang.String	toStringItems() Used by toString to print attribute items.
protected static java.lang.String	toStringPath(java.lang.String[] attributePath, int position)

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

name

protected java.lang.String name

Name of the group. This is used in subclasses where the groups are stored and can be used within a query by name as with FetchGroup. For dynamic groups the name has no functional value.

typeName

protected java.lang.String typeName

The name of the class represented by this AttrbuteGroup. Used to specify overriding groups for subclasses.

type

protected java.lang.Class type

The class represented by this AttrbuteGroup. Used to specify overriding groups for subclasses.

superClassGroup

protected CoreAttributeGroup superClassGroup

To add inheritance support the two following attrbutes are used to create a model of the inheritance tree This attribute points to the parent AttributeGroup of this attribute group.

subClasses

protected transient java.util.Set<CoreAttributeGroup> subClasses

This attribute references the immediate subclass groups for this attributeGroup. This is not required but acts as a means to support adding inheritance branches into the an established tree.

allsubclasses

protected java.util.Map<java.lang.Object,CoreAttributeGroup> allsubclasses

This attribute is used to store all of the classes in this hierarchy keyed by type. It is used to find the correct graph for polymorphic groups.

items

protected java.util.Map<java.lang.String,ATTRIBUTE_ITEM extends CoreAttributeItem> items

Specified attributes in the group mapped to their AttributeItems

isValidated

protected boolean isValidated

Marks this AttributeGroup as having been validated by the builder and does not require further validation

Constructor Detail

CoreAttributeGroup

public CoreAttributeGroup(java.lang.String name)

CoreAttributeGroup

public CoreAttributeGroup(java.lang.String name,
                  java.lang.String type,
                  boolean isValidated)

CoreAttributeGroup

public CoreAttributeGroup(java.lang.String name,
                  java.lang.Class type,
                  boolean isValidated)

INTERNAL: This constructer is to only be used by EclipseLink internally

Parameters:

name -

type -

CoreAttributeGroup

public CoreAttributeGroup()

Method Detail

addAttribute

public void addAttribute(java.lang.String attributeNameOrPath)

Add a basic attribute or nested attribute with each String representing an attribute on the path to what needs to be included in the AttributeGroup.

Example: group.addAttribute("firstName");
group.addAttribute("manager.address");

Parameters:

attrPathOrName - A simple attribute, array or attributes forming a path

addAttribute

public void addAttribute(java.lang.String attributeNameOrPath,
                java.util.Collection<? extends CoreAttributeGroup> groups)

Add an attribute and the corresponding list of AttributeGroups. Multiple groups are added in the case of inheritance

Parameters:

attrPathOrName - A simple attribute, array or attributes forming a path

group - - a collection of AttributeGroups to be added.

addAttribute

public void addAttribute(java.lang.String attributeNameOrPath,
                CoreAttributeGroup group)

Add a basic attribute or nested attribute with each String representing an attribute on the path to what needs to be included in the AttributeGroup.

Example: group.addAttribute("firstName", group1);
group.addAttribute("manager.address", group2); Note that existing group corresponding to attributeNameOrPath will be overridden with the passed group.

Parameters:

attrPathOrName - A simple attribute, array or attributes forming a path

group - - an AttributeGroup to be added.

addAttributeKey

public void addAttributeKey(java.lang.String attributeNameOrPath,
                   CoreAttributeGroup group)

Add a basic attribute or nested attribute with each String representing the key of an attribute of type Map on the path to what needs to be included in the AttributeGroup.

Example: group.addAttribute("firstName", group1);
group.addAttribute("manager.address", group2); Note that existing group corresponding to attributeNameOrPath will be overridden with the passed group.

Parameters:

attrPathOrName - A simple attribute, array or attributes forming a path to a Map key

group - - an AttributeGroup to be added.

addAttributes

public void addAttributes(java.util.Collection<java.lang.String> attrOrPaths)

Add a set of attributes to the group.

clone

public CoreAttributeGroup clone()

Overrides:

clone in class java.lang.Object

clone

public CoreAttributeGroup clone(java.util.Map<CoreAttributeGroup<ATTRIBUTE_ITEM>,CoreAttributeGroup<ATTRIBUTE_ITEM>> cloneMap)

INTERNAL: This method is used internally in the clone processing.

Parameters:

cloneMap -

Returns:

containsAttribute

public boolean containsAttribute(java.lang.String attributeNameOrPath)

Return if the attribute is defined in the group.

containsAttributeInternal

public boolean containsAttributeInternal(java.lang.String attributeName)

INTERNAL: Return if the attribute is defined in the group. Only local attribute names are checked.

convert

protected java.lang.String[] convert(java.lang.String... nameOrPath)

Convert a provided name or path which could be a single attributeName, a single string with dot separated attribute names, or an array of attribute names defining the path.

Throws:

java.lang.IllegalArgumentException - if name is not valid attribute name or path

convertClassNamesToClasses

public void convertClassNamesToClasses(java.lang.ClassLoader classLoader)

INTERNAL: Convert all the class-name-based settings in this Descriptor to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes.

Parameters:

classLoader -

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

findGroup

public CoreAttributeGroup findGroup(ClassDescriptor type)

getAllItems

public java.util.Map<java.lang.String,ATTRIBUTE_ITEM> getAllItems()

INTERNAL:

getAttributeNames

public java.util.Set<java.lang.String> getAttributeNames()

getGroup

public CoreAttributeGroup getGroup(java.lang.String attributeNameOrPath)

Returns AttributeGroup corresponding to the passed (possibly nested) attribute.

getItem

public ATTRIBUTE_ITEM getItem(java.lang.String attributeNameOrPath)

INTERNAL: Lookup the AttributeItemfor the provided attribute name or path.

Returns:

item or null

Throws:

java.lang.IllegalArgumentException - if name is not valid attribute name or path

getItem

protected ATTRIBUTE_ITEM getItem(java.lang.String[] attributePath,
                     boolean create)

Locate the AttributeGroup where the leaf attribute in the path should be applied to.

Parameters:

create - indicates if intermediate AttributeGroup required within the specified path should be created as needed. When checking the state of the map callers should set this to false to avoid changing the state unexpectedly

getItems

public java.util.Map<java.lang.String,ATTRIBUTE_ITEM> getItems()

INTERNAL:

getName

public java.lang.String getName()

getSubClassGroups

public java.util.Map<java.lang.Object,CoreAttributeGroup> getSubClassGroups()

INTERNAL:

getType

public java.lang.Class getType()

getTypeName

public java.lang.String getTypeName()

INTERNAL: Returns the name of the type this group represents

hasInheritance

public boolean hasInheritance()

Indicates whether this group is part of an inheritance hierarchy

hasItems

public boolean hasItems()

Indicates whether the group has at least one attribute.

insertSubClass

public void insertSubClass(CoreAttributeGroup group)

INTERNAL: This method will insert the group into the entity hierarchy just below this AttributeGroup.

Parameters:

group -

isConcurrent

public boolean isConcurrent()

INTERNAL: Only LoadGroups allow concurrency.

isCopyGroup

public boolean isCopyGroup()

INTERNAL: This method is used internally when converting to a copy group.

Parameters:

cloneMap -

Returns:

isFetchGroup

public boolean isFetchGroup()

isLoadGroup

public boolean isLoadGroup()

isSupersetOf

public boolean isSupersetOf(CoreAttributeGroup<ATTRIBUTE_ITEM> anotherGroup)

Return true if this AttributeGroup is a super-set of the passed in AttributeGroup.

isValidated

public boolean isValidated()

INTERNAL:

Returns:

the isValidated

newGroup

protected CoreAttributeGroup newGroup(java.lang.String name,
                          CoreAttributeGroup parent)

Subclass may create different types.

newItem

protected CoreAttributeItem newItem(CoreAttributeGroup group,
                        java.lang.String attrName)

Subclass may create different types.

removeAttribute

public void removeAttribute(java.lang.String attributeNameOrPath)

Remove an attribute from the group.

setAllSubclasses

public void setAllSubclasses(java.util.Map<java.lang.Object,CoreAttributeGroup> subclasses)

INTERNAL:

setAttributeNames

public void setAttributeNames(java.util.Set attributeNames)

setName

public void setName(java.lang.String name)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toStringAdditionalInfo

protected java.lang.String toStringAdditionalInfo()

Used by toString to print additional info for derived classes.

toStringItems

protected java.lang.String toStringItems()

Used by toString to print attribute items.

toStringPath

protected static java.lang.String toStringPath(java.lang.String[] attributePath,
                            int position)