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Smack/documentation/extensions/mam.md
2018-04-01 09:12:31 -05:00

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Message Archive Management
==========================
[Back](index.md)
Query and control an archive of messages stored on a server.
* Check MAM support
* Query archive
* Paging
* Get form fields
* Get preferences
* Update preferences
**XEP related:** [XEP-0313](http://xmpp.org/extensions/xep-0313.html)
Get an instance of Message Archive Management Manager
-----------------------------------------------------
```
MamManager mamManager = MamManager.getInstanceFor(connection);
```
Check MAM support
-----------------
```
boolean isSupported = mamManager.isSupported();
```
Query archive
-------------
```
MamQueryResult mamQueryResult = mamManager.queryArchive(max);
```
*max* is an `Integer`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchive(withJid);
```
*withJid* is a `Jid`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchive(start, end);
```
*start* is a `Date`
*end* is a `Date`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchive(additionalFields);
```
*additionalFields* is a `List<FormField>`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchiveWithStartDate(start);
```
*start* is a `Date`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchiveWithEndDate(end);
```
*end* is a `Date`
or
```
MamQueryResult mamQueryResult = mamManager.queryArchive(max, start, end, withJid, additionalFields);
```
*max* is an `Integer`
*start* is a `Date`
*end* is a `Date`
*withJid* is a `Jid`
*additionalFields* is a `List<FormField>`
**Get data from mamQueryResult object**
```
// Get forwarded messages
List<Forwarded> forwardedMessages = mamQueryResult.forwardedMessages;
// Get fin IQ
MamFinIQ mamFinIQ = mamQueryResult.mamFin;
```
Paging
------
**Get a page**
```
MamQueryResult mamQueryResult = mamManager.page(dataForm, rsmSet);
```
*dataForm* is a `DataForm`
*rsmSet* is a `RSMSet`
**Get the next page**
```
MamQueryResult mamQueryResult = mamManager.pageNext(previousMamQueryResult, count);
```
*previousMamQueryResult* is a `MamQueryResult`
*count* is an `int`
**Get page before the first message saved (specific chat)**
```
MamQueryResult mamQueryResult = mamManager.pageBefore(chatJid, firstMessageId, max);
```
*chatJid* is a `Jid`
*firstMessageId* is a `String`
*max* is an `int`
**Get page after the last message saved (specific chat)**
```
MamQueryResult mamQueryResult = mamManager.pageAfter(chatJid, lastMessageId, max);
```
*chatJid* is a `Jid`
*lastMessageId* is a `String`
*max* is an `int`
Get form fields
---------------
```
List<FormField> formFields = mamManager.retrieveFormFields();
```
Get preferences
---------------
```
MamPrefsResult mamPrefsResult = mamManager.retrieveArchivingPreferences();
// Get preferences IQ
MamPrefsIQ mamPrefs = mamPrefsResult.mamPrefs;
// Obtain always and never list
List<Jid> alwaysJids = mamPrefs.getAlwaysJids();
List<Jid> neverJids = mamPrefs.getNeverJids();
// Obtain default behaviour (can be 'always', 'never' or 'roster')
DefaultBehavior defaultBehavior = mamPrefs.getDefault();
// Get the data form
DataForm dataForm = mamPrefsResult.form;
```
Update preferences
------------------
```
MamPrefsResult mamPrefsResult = mamManager.updateArchivingPreferences(alwaysJids, neverJids, defaultBehavior);
```
*alwaysJids* is a `List<Jid>`
*neverJids* is a `List<Jid>`
*defaultBehavior* is a `DefaultBehavior`