SharedMap

Persistent data sharing between tasks.

Note:

• Creates a copy of passed data and stores it independently of job creation / deletion.
• Stored data is not erased when the task that created it ends.
• The SharedMap object supports concurrent access between tasks.

SharedMap class

class SharedMap {
        constructor SharedMap( String uniquename );
        bool store( string key, {JSON Object} );
        {JSON Object} load( string key );
        bool contains( string key ) ;
        bool clear( string key );
        Array keys();
        Array dump();
  }

.store

Store 'data' datas in a SharedMap object 'dictionnary_1)

var x = new SharedMap('dictionnary_1');
x.store( 'key1', data );

'data' is a JSON object type.

.load

Get data contents from a SharedMap engine

.contains

Check if key is present in a SharedMap objest

.clear

Remove the key from SharedMap object

.keys

Display keys from SharedMap engine

• Example :

First task :

    var x = new SharedMap('dictionnary_1');
    var data = { 'param1' : 3, 'param2' : 0 };
    x.store( 'key1', data );

Second task :

    var x = new SharedMap('dictionnary_1');
    if( x.contains('key1') ) {
        var y = x.load('key1');
        print( y.param1 );
    }

Retrieve all stored keys :

var x = new SharedMap('dictionnary_1');
var data = { 'param1' : 3, 'param2' : 0 };
x.store( 'key1', data );
x.store( 'key2', data );
var keys = x.keys();
// keys = ["key1","key2"]

.dump()

Returns an array of object with all the elements stored in the SharedMap. Each returned object of the array has two attributes :

• key : the key name used in the SharedMap
• value : a string, representing the content.

Last update: March 12, 2023