Examples of org.drools.runtime.StatelessKnowledgeSession

org.drools.runtime.StatelessKnowledgeSession
a global hibernate session, that can be used for DB interactions in the rules. ksession.execute( collection ); // this will now execute and will be able to resolve the "hbnSession" identifier.
The third way is execution scopped globals using the CommandExecutor and SetGlobal Commands:
```
 List cmds = new ArrayList(); cmds.add( CommandFactory.newSetGlobal( "list1", new ArrayList() ) ); cmds.add( CommandFactory.newInsert( new Person( "jon", 102 ) ) ); ksession.execute( CommandFactory.newBatchExecution( cmds ) ); 
```
The CommandExecutor interface also supports the ability to export data via "out" parameters. Inserted facts, globals and query results can all be returned.
```
 List cmds = new ArrayList(); cmds.add( CommandFactory.newSetGlobal( "list1", new ArrayList(), true ) ); cmds.add( CommandFactory.newInsert( new Person( "jon", 102 ), "person" ) ); cmds.add( CommandFactory.newQuery( "Get People" "getPeople" ); ExecutionResults results = ksession.execute( CommandFactory.newBatchExecution( cmds ) ); results.getValue( "list1" ); // returns the ArrayList results.getValue( "person" ); // returns the inserted fact Person results.getValue( "Get People" );// returns the query as a QueryResults instance. 
```
@see org.drools.runtime.CommandExecutor @see org.drools.runtime.command.CommandFactory @see org.drools.runtime.command.BatchExecution @see org.drools.runtime.ExecutionResults.BatchExecutionResults @see org.drools.runtime.help.BatchExecutionHelp @see org.drools.runtime.pipeline.PipelineFactory @see org.drools.runtime.Globals

        Cheese stilton = new Cheese( "stilton", 5 );
        List list1 = new ArrayList();
        List list2 = new ArrayList();
        List list3 = new ArrayList();
        
        StatelessKnowledgeSession ksession = getSession2( ResourceFactory.newByteArrayResource( str.getBytes() ) );
        Command setGlobal1 = CommandFactory.newSetGlobal( "list1", list1 );
        Command setGlobal2 = CommandFactory.newSetGlobal( "list2", list2, true );
        Command setGlobal3 = CommandFactory.newSetGlobal( "list3", list3, "outList3" );
        Command insert = CommandFactory.newInsertObject( stilton  );
        
        List cmds = new ArrayList();
        cmds.add( setGlobal1 );
        cmds.add( setGlobal2 );
        cmds.add( setGlobal3 );
        cmds.add(  insert );
        
        BatchExecutionResults result = ksession.execute( CommandFactory.newBatchExecution( cmds ) );
        
        assertEquals( 30,
                      stilton.getPrice() ); 
        
        assertNull( result.getValue( "list1" ) );

View Full Code Here

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        
        kbase = SerializationHelper.serializeObject( kbase );


        StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
        Cheese stilton1 = new Cheese( "stilton", 1);
        Cheese cheddar1 = new Cheese( "cheddar", 1);
        Cheese stilton2 = new Cheese( "stilton", 2);
        Cheese cheddar2 = new Cheese( "cheddar", 2);
        Cheese stilton3 = new Cheese( "stilton", 3);
        Cheese cheddar3 = new Cheese( "cheddar", 3);  
        
        Set set = new HashSet();
        List list = new ArrayList();
        list.add(stilton1);
        list.add(cheddar1);
        set.add( list );
        
        list = new ArrayList();
        list.add(stilton2);
        list.add(cheddar2);
        set.add( list );
        
        list = new ArrayList();
        list.add(stilton3);
        list.add(cheddar3);
        set.add( list );
        
        List<Command> cmds = new ArrayList<Command>();        
        cmds.add( CommandFactory.newInsertObject( stilton1 ) );
        cmds.add( CommandFactory.newInsertObject( stilton2 ) );
        cmds.add( CommandFactory.newInsertObject( stilton3 ) );
        cmds.add( CommandFactory.newInsertObject( cheddar1 ) );
        cmds.add( CommandFactory.newInsertObject( cheddar2 ) );
        cmds.add( CommandFactory.newInsertObject( cheddar3 ) );
        
        cmds.add(  CommandFactory.newQuery( "cheeses", "cheeses" ) );
        
        BatchExecutionResults batchResult = ksession.execute( CommandFactory.newBatchExecution( cmds ) );
        
        org.drools.runtime.rule.QueryResults results = ( org.drools.runtime.rule.QueryResults) batchResult.getValue( "cheeses" );
        assertEquals( 3, results.size() );        
        assertEquals( 2, results.getIdentifiers().length );
        Set newSet = new HashSet();

View Full Code Here

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        
       
        kbase.addKnowledgePackages( pkgs );
        kbase    = SerializationHelper.serializeObject( kbase );
        StatelessKnowledgeSession session = kbase.newStatelessKnowledgeSession();


        session.setGlobal( "list",
                           this.list );
        session.setGlobal( "cheesery",
                           this.cheesery );
        return session;
    }

View Full Code Here

        }


        List list = new ArrayList();


        KnowledgeBase kbase = kbuilder.newKnowledgeBase();
        StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
        ksession.setGlobal( "list", list );


        List<Command<?>> commands = new ArrayList<Command<?>>();
        Person student = new Person("student", 18);
        commands.add(CommandFactory.newInsert(student));


        System.out.println("Starting execution...");
        commands.add(CommandFactory.newFireAllRules());
        ksession.execute(CommandFactory.newBatchExecution(commands));


        System.out.println("Finished...");


        assertEquals( 2, list.size() );
        assertTrue( list.contains( 1 ) );

View Full Code Here

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        KnowledgeAgent kagent = this.createKAgent( kbase );


        applyChangeSet( kagent, ResourceFactory.newUrlResource( fxml.toURI().toURL() ) );


        StatelessKnowledgeSession ksession = kagent.newStatelessKnowledgeSession();
        List<String> list = new ArrayList<String>();
        ksession.setGlobal( "list",
                            list );
        ksession.execute( "hello" );


        assertEquals( 2,
                      list.size() );
        assertTrue( list.contains( "rule1" ) );
        assertTrue( list.contains( "rule2" ) );


        list.clear();


        fileManager.write( "rule1.drl",
                           createDefaultRule( "rule3" ) );


        scan( kagent );


        ksession.execute( "hello" );


        assertEquals( 2,
                      list.size() );


        assertTrue( list.contains( "rule3" ) );

View Full Code Here


        KnowledgeAgent kagent = this.createKAgent( kbase );


        applyChangeSet( kagent, ResourceFactory.newUrlResource( fxml.toURI().toURL() ) );


        StatelessKnowledgeSession ksession = kagent.newStatelessKnowledgeSession();


        List<String> list = new ArrayList<String>();
        ksession.setGlobal( "list",
                            list );


        ksession.execute( new InsertObjectCommand( "hello" ) );


        assertEquals( 2,
                      list.size() );
        assertTrue( list.contains( "rule1" ) );
        assertTrue( list.contains( "rule2" ) );

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        assertFalse( kbuilder.hasErrors() );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
        List list = new ArrayList();
        ksession.setGlobal( "list",
                            list );


        Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
        
        Action assignResult = PipelineFactory.newAssignObjectAsResult();

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        assertFalse( kbuilder.hasErrors() );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
        List list = new ArrayList();
        ksession.setGlobal( "list",
                            list );


        Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
        
        Action assignResult = PipelineFactory.newAssignObjectAsResult();

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        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        KnowledgeAgent kagent = this.createKAgent( kbase );


        applyChangeSet( kagent, ResourceFactory.newUrlResource( fxml.toURI().toURL() ) );


        StatelessKnowledgeSession ksession = kagent.newStatelessKnowledgeSession();
        List<String> list = new ArrayList<String>();
        ksession.setGlobal( "list",
                            list );
        ksession.execute( "hello" );


        assertEquals( 2,
                      list.size() );
        assertTrue( list.contains( "rule1" ) );
        assertTrue( list.contains( "rule2" ) );


        list.clear();


        fileManager.write( "rule1.drl",
                           createDefaultRule( "rule3" ) );
        
        scan(kagent);


        ksession.execute( "hello" );


        assertEquals( 2,
                      list.size() );


        assertTrue( list.contains( "rule3" ) );

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        KnowledgeAgent kagent = this.createKAgent( kbase );
        
        applyChangeSet(kagent, ResourceFactory.newUrlResource( fxml.toURI().toURL() ) );


        StatelessKnowledgeSession ksession = kagent.newStatelessKnowledgeSession();


        List<String> list = new ArrayList<String>();
        ksession.setGlobal( "list",
                            list );


        ksession.execute( new InsertObjectCommand( "hello" ) );


        assertEquals( 2,
                      list.size() );
        assertTrue( list.contains( "rule1" ) );
        assertTrue( list.contains( "rule2" ) );

View Full Code Here

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