Examples of org.drools.QueryResults$QueryResultsIterator

org.drools.QueryResults
Returned QueryResults instance for a requested named query. from here you can iterate the returned data, or get a specific row. All the available Declarations used in the query can also be accessed.

            queryObj = (Query) node.getRule();


            this.handleFactory.destroyFactHandle( handle );
        }


        return new QueryResults( list,
                                 queryObj,
                                 this );
    }

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            if ( queryObject.getQuery() != null ) {
                // this is null when there are no query results, thus the query object is never set
                declarations = queryObject.getQuery().getDeclarations();
            }


            return new QueryResults( (List<FactHandle[]>) queryObject.getQueryResultCollector().getResults(),
                                     declarations,
                                     this );
        } finally {
            this.lock.unlock();
            this.ruleBase.readUnlock();

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            queryObj = (Query) node.getRule();


            this.handleFactory.destroyFactHandle( handle );
        }


        return new QueryResults( list,
                                 queryObj,
                                 this );
    }

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            if ( queryObject.getQuery() != null ) {
                // this is null when there are no query results, thus the query object is never set
                declarations = queryObject.getQuery().getDeclarations();
            }


            return new QueryResults( ((StandardQueryViewChangedEventListener) queryObject.getQueryResultCollector()).getResults(),
                                     declarations,
                                     this );
        } finally {
            this.lock.unlock();
            this.ruleBase.readUnlock();

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        StatefulSession session = ruleBase.newStatefulSession();


        session.insert( new Cheese( "stilton",
                                    15 ) );


        QueryResults results = session.getQueryResults( "query1",
                                                        new Object[]{"stilton"} );
        assertEquals( 1,
                      results.size() );
        Object object = results.get( 0 ).get( 0 );
        assertEquals( new Cheese( "stilton",
                                  15 ),
                      object );


        results = session.getQueryResults( "query1",

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        final Cheese stilton = new Cheese( "stinky",
                                           5 );
        session.insert( stilton );
        session = SerializationHelper.getSerialisedStatefulSession( session,
                                                                    ruleBase );
        final QueryResults results = session.getQueryResults( "simple query" );
        assertEquals( 1,
                      results.size() );
    }

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        ruleBase = SerializationHelper.serializeObject( ruleBase );


        final WorkingMemory workingMemory = ruleBase.newStatefulSession();
        workingMemory.fireAllRules();


        final QueryResults results = workingMemory.getQueryResults( "assertedobjquery" );
        assertEquals( 1,
                      results.size() );
        assertEquals( new InsertedObject( "value1" ),
                      results.get( 0 ).get( 0 ) );
    }

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        ruleBase = SerializationHelper.serializeObject( ruleBase );


        final WorkingMemory workingMemory = ruleBase.newStatefulSession();
        workingMemory.fireAllRules();


        QueryResults results = workingMemory.getQueryResults( "assertedobjquery",
                                                              new String[]{"value1"} );
        assertEquals( 1,
                      results.size() );
        assertEquals( new InsertedObject( "value1" ),
                      results.get( 0 ).get( 0 ) );


        results = workingMemory.getQueryResults( "assertedobjquery",
                                                 new String[]{"value3"} );
        assertEquals( 0,
                      results.size() );


        results = workingMemory.getQueryResults( "assertedobjquery2",
                                                 new String[]{null, "value2"} );
        assertEquals( 1,
                      results.size() );
        assertEquals( new InsertedObject( "value2" ),
                      results.get( 0 ).get( 0 ) );


        results = workingMemory.getQueryResults( "assertedobjquery2",
                                                 new String[]{"value3", "value2"} );
        assertEquals( 1,
                      results.size() );
        assertEquals( new InsertedObject( "value2" ),
                      results.get( 0 ).get( 0 ) );
    }

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                                        40 );


        workingMemory.insert( per1 );
        workingMemory.insert( per2 );


        QueryResults results = workingMemory.getQueryResults( "find stinky cheeses" );
        assertEquals( 1,
                      results.size() );


        results = workingMemory.getQueryResults( "find pensioners" );
        assertEquals( 1,
                      results.size() );
    }

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                                      40 );
        p3.setStatus( "europe" );
        final FactHandle c3FactHandle = workingMemory.insert( p3 );
        workingMemory.fireAllRules();


        QueryResults queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 2,
                      queryResults.size() );


        // europe=[ 1, 2 ], america=[ 3 ]
        p3.setStatus( "america" );
        workingMemory.update( c3FactHandle,
                              p3 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 1,
                      queryResults.size() );


        // europe=[ 1 ], america=[ 2, 3 ]
        p2.setStatus( "america" );
        workingMemory.update( c2FactHandle,
                              p2 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 1,
                      queryResults.size() );


        // europe=[ ], america=[ 1, 2, 3 ]
        p1.setStatus( "america" );
        workingMemory.update( c1FactHandle,
                              p1 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 2,
                      queryResults.size() );


        // europe=[ 2 ], america=[ 1, 3 ]
        p2.setStatus( "europe" );
        workingMemory.update( c2FactHandle,
                              p2 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 1,
                      queryResults.size() );


        // europe=[ 1, 2 ], america=[ 3 ]
        p1.setStatus( "europe" );
        workingMemory.update( c1FactHandle,
                              p1 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 1,
                      queryResults.size() );


        // europe=[ 1, 2, 3 ], america=[ ]
        p3.setStatus( "europe" );
        workingMemory.update( c3FactHandle,
                              p3 );
        workingMemory.fireAllRules();
        queryResults = workingMemory.getQueryResults( "2 persons with the same status" );
        assertEquals( 2,
                      queryResults.size() );
    }

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