Package org.ametys.plugins.repository.events

Class JCREventHelper

java.lang.Object

org.ametys.plugins.repository.events.JCREventHelper

All Implemented Interfaces:

Component

public final class JCREventHelper
extends Object
implements Component

Helper for implementing EventHolder in JCR.

Field Summary

Fields

Modifier and Type	Field	Description
private static String	__EVENT_HOLDER_NODE_NAME
private static String	__EVENT_NAME_PREFIX
private static String	__NODETYPE_EVENT
private static String	__NODETYPE_EVENT_ELEMENT

Constructor Summary

Constructors

Modifier	Constructor	Description
private	JCREventHelper()

Method Summary

Modifier and Type	Method	Description
private static String[]	_getHashedPath(String name)	Computes a hashed path in the JCR tree from the name of the child object. Subclasses may override this method to provide a more suitable hash function. This implementation relies on the buzhash algorithm.
static Node	addEventNode(EventHolder eventHolder, Date eventDate, String eventType, UserIdentity author)	Add an event node
static NodeIterator	getEvents(EventHolder eventHolder)	Returns the event child nodes
static NodeIterator	getEvents(EventHolder eventHolder, String[] types)	Returns the events sorted by ascending date
static Node	getEventsRootNode(Node node)	Get the node holding the JCR events under the given node
static String	getEventXPathQuery(EventHolder eventHolder, Expression eventExpression, SortCriteria sortCriteria)	Creates the XPath query corresponding to specified Expression.

Methods inherited from class java.lang.Object

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

Field Detail

__EVENT_HOLDER_NODE_NAME

private static final String __EVENT_HOLDER_NODE_NAME

See Also:

Constant Field Values

__NODETYPE_EVENT

private static final String __NODETYPE_EVENT

See Also:

Constant Field Values

__NODETYPE_EVENT_ELEMENT

private static final String __NODETYPE_EVENT_ELEMENT

See Also:

Constant Field Values

__EVENT_NAME_PREFIX

private static final String __EVENT_NAME_PREFIX

See Also:

Constant Field Values

Constructor Detail

JCREventHelper

private JCREventHelper()

Method Detail

getEventsRootNode

public static Node getEventsRootNode(Node node)
                              throws RepositoryException

Get the node holding the JCR events under the given node

Parameters:

node - The parent node

Returns:

the events' root node

Throws:

RepositoryException - if an error occurred

getEvents

public static NodeIterator getEvents(EventHolder eventHolder)
                              throws RepositoryException

Returns the event child nodes

Parameters:

eventHolder - The event holder

Returns:

The event child nodes

Throws:

RepositoryException - if an error occurred

getEvents

public static NodeIterator getEvents(EventHolder eventHolder,
                                     String[] types)
                              throws RepositoryException

Returns the events sorted by ascending date

Parameters:

eventHolder - The event holder

types - The types of events to return. Can be null to get all events

Returns:

The event child nodes

Throws:

RepositoryException - if an error occurred

getEventXPathQuery

public static String getEventXPathQuery(EventHolder eventHolder,
                                        Expression eventExpression,
                                        SortCriteria sortCriteria)
                                 throws RepositoryException

Creates the XPath query corresponding to specified Expression.

Parameters:

eventHolder - the event holder

eventExpression - the query predicates.

sortCriteria - the sort criteria.

Returns:

the created XPath query.

Throws:

RepositoryException - if an error occurred

addEventNode

public static Node addEventNode(EventHolder eventHolder,
                                Date eventDate,
                                String eventType,
                                UserIdentity author)
                         throws RepositoryException

Add an event node

Parameters:

eventHolder - The event holder

eventDate - The event's date

eventType - The event's type

author - The event's author

Returns:

The created event node

Throws:

RepositoryException - if an error occurred

_getHashedPath

private static String[] _getHashedPath(String name)

Computes a hashed path in the JCR tree from the name of the child object.
Subclasses may override this method to provide a more suitable hash function.
This implementation relies on the buzhash algorithm. This method MUST return an array of the same length for each name.

Parameters:

name - the name of the child object

Returns:

a hashed path of the name.