Package org.opensaml.core.xml.util

Class IDIndex

java.lang.Object

org.opensaml.core.xml.util.IDIndex

@NotThreadSafe
public class IDIndex
extends Object

Class which provides storage for the ID-to-XMLObject index mapping on an owning XMLObject.

Field Summary

Fields

Modifier and Type	Field	Description
private Map<String,XMLObject>	idMappings	Mapping of ID attributes to XMLObjects in the subtree rooted at this object's owner.
private XMLObject	owner	The XMLObject which owns this ID index.

Constructor Summary

Constructors

Constructor	Description
IDIndex(XMLObject newOwner)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	deregisterIDMapping(String id)	Deregister an ID-to-XMLObject mapping for one of this object's owner's children.
void	deregisterIDMappings(IDIndex idIndex)	Deregister multiple ID-to-XMLObject mappings for this object's owner's children.
protected Map<String,XMLObject>	getIDMappings()	Get the ID-to-XMLObject mappings for this object's owner's children.
Set<String>	getIDs()	Get the set of ID strings which are the index keys.
boolean	isEmpty()	Return whether the index is currently empty.
XMLObject	lookup(String id)	Lookup and return the XMLObject identified by the specified ID attribute.
void	registerIDMapping(String id, XMLObject referent)	Register an ID-to-XMLObject mapping for one of this object's owner's children.
void	registerIDMappings(IDIndex idIndex)	Register multiple ID-to-XMLObject mappings for this object's owner's children.

Methods inherited from class java.lang.Object

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

Field Detail

owner

@Nonnull
private final XMLObject owner

The XMLObject which owns this ID index.

idMappings

@Nonnull
private Map<String,XMLObject> idMappings

Mapping of ID attributes to XMLObjects in the subtree rooted at this object's owner. This allows constant-time dereferencing of ID-typed attributes within the subtree.

Constructor Detail

IDIndex

public IDIndex(@Nonnull
               XMLObject newOwner)

Constructor.

Parameters:

newOwner - the XMLObject which owns this ID-to-XMLObject index

Method Detail

registerIDMapping

public void registerIDMapping(@Nonnull @NotEmpty
                              String id,
                              @Nonnull
                              XMLObject referent)

Register an ID-to-XMLObject mapping for one of this object's owner's children.

Parameters:

id - the XMLObject child's ID attribute value

referent - the XMLObject child

registerIDMappings

public void registerIDMappings(@Nonnull
                               IDIndex idIndex)

Register multiple ID-to-XMLObject mappings for this object's owner's children.

Parameters:

idIndex - the ID-to-XMLObject mapping to register

deregisterIDMapping

public void deregisterIDMapping(@Nonnull @NotEmpty
                                String id)

Deregister an ID-to-XMLObject mapping for one of this object's owner's children.

Parameters:

id - the ID attribute value of the XMLObject child to deregister

deregisterIDMappings

public void deregisterIDMappings(@Nonnull
                                 IDIndex idIndex)

Deregister multiple ID-to-XMLObject mappings for this object's owner's children.

Parameters:

idIndex - the ID-to-XMLObject mappings to deregister

lookup

@Nullable
public XMLObject lookup(@Nonnull @NotEmpty
                        String id)

Lookup and return the XMLObject identified by the specified ID attribute.

Parameters:

id - the ID attribute value to lookup

Returns:

the XMLObject identified by the ID attribute value

isEmpty

public boolean isEmpty()

Return whether the index is currently empty.

Returns:

true if the index is currently empty

getIDs

@Nonnull
public Set<String> getIDs()

Get the set of ID strings which are the index keys.

Returns:

the set of ID strings which are keys to the index

getIDMappings

@Nonnull
protected Map<String,XMLObject> getIDMappings()

Get the ID-to-XMLObject mappings for this object's owner's children.

Returns:

the ID-to-XMLObject mapping