ReceiverTaskIfc (Tigase XMPP Server 7.1.7-SNAPSHOT API)

All Known Implementing Classes:

AbstractReceiverTask, NewsDistributor, PubSubTestsTask, RepoRosterTask, ShortNewsPublisher, SystemMonitorTask, TesterTask
```
public interface ReceiverTaskIfc
```
This is StanzaReceiver task which can receive XMPP packets to do something with them. It may produce new XMPP packets in exchange to send them back or to other users.
Created: Wed May 9 13:52:57 2007

Version:

$Rev$

Author:

Artur Hefczyc

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`destroy(Queue<Packet> results)` `destroy` method is called when the task is being permanently deleted.
`Map<String,PropertyItem>`	`getDefaultParams()` `getDefaultParams` method return task instance default configuration parameters.
`String`	`getDescription()` `getDescription` method returns a description for task instance.
`String`	`getHelp()` `getHelp` method returns task help information.
`ReceiverTaskIfc`	`getInstance()` `getInstance` method returns new task instance of this type.
`JID`	`getJID()` `getJID` method returns task instance Jabber ID.
`Map<String,PropertyItem>`	`getParams()` `getParams` method return task instance configuration parameters.
`Map<JID,RosterItem>`	`getRoster()` `getRoster` returns `roster` that is a collection with all users subscribed to this task.
`void`	`getStatistics(StatisticsList list)` Method description
`List<StatRecord>`	`getStats()` `getStats` method retorns list of statistics records.
`String`	`getType()` `getType` method returns the task type name.
`void`	`init(Queue<Packet> results)` `init` method initializes task.
`boolean`	`isAdmin(JID jid)` `isAdmin` method checks whether user given as parameter is one of defined admins.
`void`	`processPacket(Packet packet, Queue<Packet> results)` `processPacket` method takes a packet addressed to this task as a parameter and does something with the packet.
`void`	`removeSubscribers(Queue<Packet> results, JID... subscr)` Method description
`void`	`setJID(JID jid)` `setJID` method sets tasks Jabber ID, unique ID which is used to identify the task.
`void`	`setParams(Map<String,Object> params)` `setParams` method sets `Map` with configuration parameters.
`void`	`setRosterItemModerationAccepted(RosterItem ri, boolean accepted)` Method description
`void`	`setStanzaReceiver(StanzaReceiverIfc srecv)` Method description

- Method Detail
  - destroy
```
void destroy(Queue<Packet> results)
```
    destroy method is called when the task is being permanently deleted. The method should take care of sending notification to all subscribed users that the task is being deleted and should also clear databases from all task data.
    
    Parameters:
    
    results - a Queue value with all packets needed to send upon task deletion.
  - init
```
void init(Queue<Packet> results)
```
    init method initializes task. It allows also for a task to send initial stanzas to user like available presence or any other stanza which does make sense to send at startup time.
    
    Parameters:
    
    results - a Queue<Packet> is a collection of result packets to send out.
  - processPacket
```
void processPacket(Packet packet,
                   Queue<Packet> results)
```
    processPacket method takes a packet addressed to this task as a parameter and does something with the packet. If as a result of input packet processing it generates some other packets to send they should be included in the results queue.
    
    Parameters:
    
    packet - a Packet input packet for processing.
    
    results - a Queue<Packet> is a collection of result packets to send out.
  - removeSubscribers
```
void removeSubscribers(Queue<Packet> results,
                       JID... subscr)
```
    Method description
    
    Parameters:
    
    results - is a Queue<Packet>
    
    subscr - is a JID
  - getDefaultParams
```
Map<String,PropertyItem> getDefaultParams()
```
    getDefaultParams method return task instance default configuration parameters. The map should contains all possible parameters accepted by the task in setParams method. Values may be empty but may not be null. All of parameters should be converted to String type to make it possible to display them in ad-hoc command x-form. Parameters then should be converted back to whatever format is needed when passed back in setParams method. For more detailed information about configuration parameters please refer to setParams method.
    
    Returns:
    
    a Map value with task instance configuration parameters.
    
    See Also:
    
    setParams(Map)
  - getDescription
```
String getDescription()
```
    getDescription method returns a description for task instance. Let's say the user want's to create new Interest group for cyclists. This property allows to set some more detailed information about the group like: This is group of ppl interested in mountain cycling near Cambridge. The description is set via properties using DESCRIPTION_PROP_KEY.
    
    Returns:
    
    a String value of task instance description;
  - getHelp
```
String getHelp()
```
    getHelp method returns task help information. This general information about tasks abilties so when the user selects task for creation he might know what the task is about. This is more like class description rather then instance description.
    
    Returns:
    
    a String value of task class help information.
  - getInstance
```
ReceiverTaskIfc getInstance()
```
    getInstance method returns new task instance of this type. This is something like Class.newInstance() but as this method is called on the already created instance there is no danger of the number of exceptions which could be normally thrown.
    
    Returns:
    
    a ReceiverTaskIfc new task instance of this type.
  - getJID
```
JID getJID()
```
    getJID method returns task instance Jabber ID. Refer to corresponding set method for more details.
    
    Returns:
    
    a String value of task instance JID,
    
    See Also:
    
    setJID(tigase.xmpp.JID)
  - getParams
```
Map<String,PropertyItem> getParams()
```
    getParams method return task instance configuration parameters. For more detailed information about configuration parameters please refer to corresponding set method.
    
    Returns:
    
    a Map value with task instance configuration parameters.
    
    See Also:
    
    setParams(Map)
  - getRoster
```
Map<JID,RosterItem> getRoster()
```
    getRoster returns roster that is a collection with all users subscribed to this task.
    
    Returns:
    
    a Map value with all user subscribed to this task.
  - getStatistics
```
void getStatistics(StatisticsList list)
```
    Method description
    
    Parameters:
    
    list - is a StatisticsList
  - getStats
```
List<StatRecord> getStats()
```
    getStats method retorns list of statistics records. Have a look at StatRecord description for more details.
    
    Returns:
    
    a List of statistics records.
    
    See Also:
    
    StatRecord
  - getType
```
String getType()
```
    getType method returns the task type name. This name is displayed on the list of all tasks available for creation. This is not a nick name of created task this is something more like "Drupal forums connector" or "Interest group". Like a Java class name is unique in JVM the task name must be also inique for StanzaReceiver. Look at task nick name for more details.
    
    Returns:
    
    a String value of the task name.
  - isAdmin
```
boolean isAdmin(JID jid)
```
    isAdmin method checks whether user given as parameter is one of defined admins. If user is the task owner it is also considered to be task administrator.
    
    Parameters:
    
    jid - a String value of user JID.
    
    Returns:
    
    a boolean value true if given user is either task admin or task owner.
  - setJID
```
void setJID(JID jid)
```
    setJID method sets tasks Jabber ID, unique ID which is used to identify the task. Example of the resulting Jabber ID for domain tigase.org and StanzaReceiver component name srec would be: devs@srec.tigase.org. There can be many tasks of the same type (having the same TaskType) but they have to have distinct JIDs. Examples of possible JIDs names are: "admin-forum@srec.tigase.org", "cycling-interest-group@srec.tigase.org".
    
    Parameters:
    
    jid - a String value of the nick name.
  - setParams
```
void setParams(Map<String,Object> params)
```
    setParams method sets Map with configuration parameters. Some parameters are predefined and common for most of task types but some tasks may require/accept extra parameters to work properly.
    
    Parameters:
    
    params - a Map value with configuration parameters.
  - setRosterItemModerationAccepted
```
void setRosterItemModerationAccepted(RosterItem ri,
                                     boolean accepted)
```
    Method description
    
    Parameters:
    
    ri - is a RosterItem
    
    accepted - is a boolean
  - setStanzaReceiver
```
void setStanzaReceiver(StanzaReceiverIfc srecv)
```
    Method description
    
    Parameters:
    
    srecv - is a StanzaReceiverIfc

Interface ReceiverTaskIfc

Method Summary

Method Detail

destroy

init

processPacket

removeSubscribers

getDefaultParams

getDescription

getHelp

getInstance

getJID

getParams

getRoster

getStatistics

getStats

getType

isAdmin

setJID

setParams

setRosterItemModerationAccepted

setStanzaReceiver