com.communote.server.core.blog

Class TopicHierarchyManagement

java.lang.Object

com.communote.server.core.blog.TopicHierarchyManagement

@Service
 @Transactional
public class TopicHierarchyManagement
extends Object

Management for

Author:

Communote GmbH - http://www.communote.com/

Constructor Summary

Constructors

Constructor and Description
TopicHierarchyManagement()

Method Summary

Modifier and Type	Method and Description
boolean	addChildTopic(Long parentTopicId, Long childTopicId) Add a topic as child to another topic.
void	removeAllConnections(Long topicId) Removes all child and parent connections for the given topic.
boolean	removeChildTopic(Long parentTopicId, Long childTopicId) Remove a child topic from its parent
void	updateTopicStructure(Long topicId, TopicStructureTO structureChange) Update the topic structure for a given topic

Methods inherited from class java.lang.Object

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

Constructor Detail

TopicHierarchyManagement

public TopicHierarchyManagement()

Method Detail

addChildTopic

public boolean addChildTopic(Long parentTopicId,
                             Long childTopicId)
                      throws BlogNotFoundException,
                             BlogAccessException,
                             ToplevelTopicCannotBeChildException

Add a topic as child to another topic.

Parameters:

parentTopicId - Id of the parent topic.

childTopicId - Id of the child topic.

Returns:

whether the topic was added or not

Throws:

BlogAccessException - in case the current user is not manager of the parent topic or has no read access to the child topic

BlogNotFoundException - in case the parent and/or child topic do not exist

ToplevelTopicCannotBeChildException - in case the child topic is a top-level topic

ParentIsAlreadyChildDataIntegrityViolationException - in case the parent would be added as its own child

removeAllConnections

public void removeAllConnections(Long topicId)
                          throws BlogAccessException

Removes all child and parent connections for the given topic.

Parameters:

topicId - The topic to remove all connections for.

Throws:

BlogAccessException - in case the current user is not manager of the topic to be removed from its topic structure

removeChildTopic

public boolean removeChildTopic(Long parentTopicId,
                                Long childTopicId)
                         throws BlogAccessException

Remove a child topic from its parent

Parameters:

parentTopicId - Id of the parent topic.

childTopicId - Id of the child topic.

Returns:

whether the child topic was removed

Throws:

BlogAccessException - in case the current user is not manager of the parent topic or has no read access to the child topic

updateTopicStructure

public void updateTopicStructure(Long topicId,
                                 TopicStructureTO structureChange)
                          throws BlogNotFoundException,
                                 AuthorizationException,
                                 ToplevelTopicCannotBeChildException,
                                 ToplevelTopicIsAlreadyChildBlogManagementException

Update the topic structure for a given topic

Parameters:

topicId - the ID of the topic

structureChange - TO describing the changes to conduct

Throws:

BlogNotFoundException - in case the topic or one of the child topics to add or remove do not exist

AuthorizationException - in case the the current user is not authorized change the top-level state or add or remove child topics

ToplevelTopicCannotBeChildException - in case one of the child topics to add is a top-level topic

ToplevelTopicIsAlreadyChildBlogManagementException - in case the topic should be made a top level topic but is already a child of another topic

ParentIsAlreadyChildDataIntegrityViolationException - in case the parent would be added as its own child