HistoryService Developer Documentation
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In two words
The HistoryService may be described as a 'simple database'. However due to the specific requirements it is highly customized. The main design goal was to define a simple, independent programming interface that would allow functionality like message history, call logs or any other feature that requires persistence.
In four words
Data is stored in HistoryRecords. A HistoryRecord always belongs to a group of records. Such group is simply a History. It is identified by a HistoryID. Each History has a HistoryRecordStructure. You can add records to a History by using a HistoryWriter, or search through the existing records by using a HistoryReader.
The main idea: to be able to simply call addRecord( id, String[] ); or findByStartDate( id, startDate );
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In Integer.MAX_VALUE words
The HistoryID is a wrapper of a String[], where the elements should contain only letters, numbers or _ (underscore). In order to create one you can use one of the two static functions:
- createFromRawID by providing a String[] whose elements are arbitrary strings
- createFromID by providing a String[] whose elements contain only letters, numbers or _
The HistoryRecordStructure is wrapper of a String[]. Each of its elements is the name in a name-value mapping. A name may appear several times, which corresponds to a one-to-many relationship.
The HistoryRecord is a HistoryRecordStructure AND values for each of the elements in this structure.
After obtaining a HistoryService you can use the following methods:
- getExistingIDs
- getHistory for a given HistoryID
- check if isHistoryExisting for a given HistoryID
- createHistory with specified HistoryID and HistoryRecordStructure
Then, after creating or obtaining an existing History, you can:
- getReader
- getWriter
- getID
- getHistoryRecordsStructure
If you need to query the existing records, after obtaining a HistoryReader, you can search:
- findByStartDate by providing a start date
- findByEndDate by providing an end date
- findByPeriod by providing a start date and an end date
- findByKeyword by providing a keyword
- findByKeywords by providing a list of keywords
- findByText by providing a start date, an end date and a list of keywords
However if you want to add records, you should obtain a HistoryWriter, and afterwards:
- addRecord by providing a HistoryRecord
- addRecord by providing a String[] corresponding to the HistoryRecordStructure
And of course.. the example..
ServiceReference historyServiceRef =
context.getServiceReference(
HistoryService.class.getName());
HistoryService historyService =
(HistoryService)context.getService(historyServiceRef);
HistoryID id = HistoryID.createFromRawID(
newString[]{'this', 'is', 'a simple', 'id, yeah!!'});
// If there is no such history - create it.
// Otherwise just get the existing one
History history;
if(!historyService.isHistoryExisting(id)){
HistoryRecordStructure recordStructure =
new HistoryRecordStructure(newString[]{'name', 'age', 'gender'});
history = historyService.createHistory(id, recordStructure);
}else{
history = historyService.getHistory(id);
}
// Add some records
HistoryWriter writer = this.history.getWriter();
writer.addRecord(newString[]{'Monica', '32', 'female'});
writer.addRecord(newString[]{'John', '64', 'male'});
writer.addRecord(newString[]{'Santa Claus', '1024', 'declines to state'});
// Then search through all records and print the results
HistoryReader reader = this.history.getReader();
QueryResultSet result = reader.findByKeyword('state');
while(result.hasNext()){
HistoryRecord record = result.nextRecord();
String[] vals = record.getPropertyValues();
System.out.println('Found! Name: ' + vals[0]
+ ' Age:' + vals[1]
+ ' Gender:' + vals[2]);
}
Jitsi Download Windows 10
Author: Alexander Pelov
Make video calls and create online meetings. Jitsi Meet, the multi-platform videoconferencing solution (Windows, macOS, Linux, Android, iOS), has the particularity of being modular, light and efficient.
Intended for the professional, educational and health sectors, Jitsi is positioned as a turnkey package for online meetings and collaborative work.
Jitsi meet servers are hosted in our multi-region cloud which guarantees a smooth video and sound experience for all local users.
What else can you do with Jitsi Meet?
- Share your desktop, presentations and more,
- Invite users to a conference via a simple, personalized URL,
- Edit documents together,
- Choose a personalized name for each meeting,
- Exchange messages and emojis during your videoconference, with the integrated chat.
- Launch several conferences at the same time without time limit
- Broadcast your meetings live on Youtube Live to increase your audience
Jitsi Meet is full of premium features
Accessible directly from your web browser or from iOS and Android mobile applications. Jitsi Meet:
Sounds better,
Through HD audio with Opus
Safe and secure
Create public and private meetings with password authentication
Keep private conversations
With default encryption and advanced security settings
Customisable branding
How To Join Meeting In Jitsi
Add your logo and use your own domain name
Flexible
Start simultaneous meetings with the names you choose
WHO USES JITSI ?
Jitsi Meet Recording Service
Contact
Do you want to learn more and try JITSI MEET?
Data is stored in HistoryRecords. A HistoryRecord always belongs to a group of records. Such group is simply a History. It is identified by a HistoryID. Each History has a HistoryRecordStructure. You can add records to a History by using a HistoryWriter, or search through the existing records by using a HistoryReader.
The main idea: to be able to simply call addRecord( id, String[] ); or findByStartDate( id, startDate );
Jitsi Meet Service Stop
In Integer.MAX_VALUE words
The HistoryID is a wrapper of a String[], where the elements should contain only letters, numbers or _ (underscore). In order to create one you can use one of the two static functions:
- createFromRawID by providing a String[] whose elements are arbitrary strings
- createFromID by providing a String[] whose elements contain only letters, numbers or _
The HistoryRecordStructure is wrapper of a String[]. Each of its elements is the name in a name-value mapping. A name may appear several times, which corresponds to a one-to-many relationship.
The HistoryRecord is a HistoryRecordStructure AND values for each of the elements in this structure.
After obtaining a HistoryService you can use the following methods:
- getExistingIDs
- getHistory for a given HistoryID
- check if isHistoryExisting for a given HistoryID
- createHistory with specified HistoryID and HistoryRecordStructure
Then, after creating or obtaining an existing History, you can:
- getReader
- getWriter
- getID
- getHistoryRecordsStructure
If you need to query the existing records, after obtaining a HistoryReader, you can search:
- findByStartDate by providing a start date
- findByEndDate by providing an end date
- findByPeriod by providing a start date and an end date
- findByKeyword by providing a keyword
- findByKeywords by providing a list of keywords
- findByText by providing a start date, an end date and a list of keywords
However if you want to add records, you should obtain a HistoryWriter, and afterwards:
- addRecord by providing a HistoryRecord
- addRecord by providing a String[] corresponding to the HistoryRecordStructure
And of course.. the example..
ServiceReference historyServiceRef =
context.getServiceReference(
HistoryService.class.getName());
HistoryService historyService =
(HistoryService)context.getService(historyServiceRef);
HistoryID id = HistoryID.createFromRawID(
newString[]{'this', 'is', 'a simple', 'id, yeah!!'});
// If there is no such history - create it.
// Otherwise just get the existing one
History history;
if(!historyService.isHistoryExisting(id)){
HistoryRecordStructure recordStructure =
new HistoryRecordStructure(newString[]{'name', 'age', 'gender'});
history = historyService.createHistory(id, recordStructure);
}else{
history = historyService.getHistory(id);
}
// Add some records
HistoryWriter writer = this.history.getWriter();
writer.addRecord(newString[]{'Monica', '32', 'female'});
writer.addRecord(newString[]{'John', '64', 'male'});
writer.addRecord(newString[]{'Santa Claus', '1024', 'declines to state'});
// Then search through all records and print the results
HistoryReader reader = this.history.getReader();
QueryResultSet result = reader.findByKeyword('state');
while(result.hasNext()){
HistoryRecord record = result.nextRecord();
String[] vals = record.getPropertyValues();
System.out.println('Found! Name: ' + vals[0]
+ ' Age:' + vals[1]
+ ' Gender:' + vals[2]);
}
Jitsi Download Windows 10
Author: Alexander Pelov
Make video calls and create online meetings. Jitsi Meet, the multi-platform videoconferencing solution (Windows, macOS, Linux, Android, iOS), has the particularity of being modular, light and efficient.
Intended for the professional, educational and health sectors, Jitsi is positioned as a turnkey package for online meetings and collaborative work.
Jitsi meet servers are hosted in our multi-region cloud which guarantees a smooth video and sound experience for all local users.
What else can you do with Jitsi Meet?
- Share your desktop, presentations and more,
- Invite users to a conference via a simple, personalized URL,
- Edit documents together,
- Choose a personalized name for each meeting,
- Exchange messages and emojis during your videoconference, with the integrated chat.
- Launch several conferences at the same time without time limit
- Broadcast your meetings live on Youtube Live to increase your audience
Jitsi Meet is full of premium features
Accessible directly from your web browser or from iOS and Android mobile applications. Jitsi Meet:
Sounds better,
Through HD audio with Opus
Safe and secure
Create public and private meetings with password authentication
Keep private conversations
With default encryption and advanced security settings
Customisable branding
How To Join Meeting In Jitsi
Add your logo and use your own domain name
Flexible
Start simultaneous meetings with the names you choose
WHO USES JITSI ?
Jitsi Meet Recording Service
Contact
Do you want to learn more and try JITSI MEET?
Chat with our experts to see how JITSI MEET can benefit your business.
