Package org.drools.base

Examples of org.drools.base.DroolsQuery

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        return evaluate(handle.getObject(), mvelContextEntry.workingMemory, mvelContextEntry.leftTuple);
    }

    public boolean isAllowedCachedRight(LeftTuple tuple, ContextEntry context) {
        if (isUnification) {
            DroolsQuery query = ( DroolsQuery ) tuple.get( 0 ).getObject();
            Variable v = query.getVariables()[ ((UnificationContextEntry)context).getReader().getIndex() ];

            if (v != null) {
                return true;
            }
            context = ((UnificationContextEntry)context).getContextEntry();
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            this.contextEntry.updateFromFactHandle( workingMemory, handle );
        }

        public void updateFromTuple(InternalWorkingMemory workingMemory,
                                    LeftTuple tuple) {
            DroolsQuery query = ( DroolsQuery ) tuple.get( 0 ).getObject();
            Variable v = query.getVariables()[ this.reader.getIndex() ];
            if ( v == null ) {
                // if there is no Variable, handle it as a normal constraint
                this.variable = null;
                this.contextEntry.updateFromTuple( workingMemory, tuple );
            } else {
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                             PropagationContext context,
                             InternalWorkingMemory workingMemory) {

            QueryTerminalNode node = (QueryTerminalNode) resultLeftTuple.getLeftTupleSink();
            Declaration[] decls = node.getDeclarations();
            DroolsQuery query = (DroolsQuery) this.factHandle.getObject();
            Object[] objects = new Object[query.getElements().length];

            Declaration decl;
            for ( int i = 0, length = this.variables.length; i < length; i++ ) {
                decl = decls[this.variables[i]];
                objects[this.variables[i]] = decl.getValue( workingMemory,
                                                            resultLeftTuple.get( decl ).getObject() );
            }

            QueryElementFactHandle resultHandle = createQueryResultHandle( context,
                                                                           workingMemory,
                                                                           objects );
           
            RightTuple rightTuple = new RightTuple( resultHandle );
            if ( query.isOpen() ) {
                rightTuple.setLeftTuple( resultLeftTuple );
                resultLeftTuple.setObject( rightTuple );

            }

            this.node.getSinkPropagator().createChildLeftTuplesforQuery( this.leftTuple,
                                                                         rightTuple,
                                                                         true, // this must always be true, otherwise we can't
                                                                               // find the child tuples to iterate for evaluating the query results
                                                                         query.isOpen() );

            RightTupleList rightTuples = query.getResultInsertRightTupleList();
            if ( rightTuples == null ) {
                rightTuples = new RightTupleList();
                query.setResultInsertRightTupleList( rightTuples );
                QueryResultInsertAction evalAction = new QueryResultInsertAction( context,
                                                                                  this.factHandle,
                                                                                  leftTuple,
                                                                                  this.node );
                context.getQueue2().addFirst( evalAction );
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                               final InternalWorkingMemory workingMemory) {
            RightTuple rightTuple = (RightTuple) resultLeftTuple.getObject();
            rightTuple.setLeftTuple( null );
            resultLeftTuple.setObject( null );

            DroolsQuery query = (DroolsQuery) this.factHandle.getObject();

            RightTupleList rightTuples = query.getResultRetractRightTupleList();
            if ( rightTuples == null ) {
                rightTuples = new RightTupleList();
                query.setResultRetractRightTupleList( rightTuples );
                QueryResultRetractAction retractAction = new QueryResultRetractAction( context,
                                                                                       this.factHandle,
                                                                                       leftTuple,
                                                                                       this.node );
                context.getQueue2().addFirst( retractAction );
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            // We need to recopy everything back again, as we don't know what has or hasn't changed
            QueryTerminalNode node = (QueryTerminalNode) resultLeftTuple.getLeftTupleSink();
            Declaration[] decls = node.getDeclarations();
            InternalFactHandle rootHandle = resultLeftTuple.get( 0 );
            DroolsQuery query = (DroolsQuery) rootHandle.getObject();

            Object[] objects = new Object[query.getElements().length];

            Declaration decl;
            for ( int i = 0, length = this.variables.length; i < length; i++ ) {
                decl = decls[this.variables[i]];
                objects[this.variables[i]] = decl.getValue( workingMemory,
                                                            resultLeftTuple.get( decl ).getObject() );
            }

            QueryElementFactHandle handle = (QueryElementFactHandle) rightTuple.getFactHandle();

            handle.setRecency( workingMemory.getFactHandleFactory().getAtomicRecency().incrementAndGet() );
            handle.setObject( objects );

            if ( query.isOpen() ) {
                rightTuple.setLeftTuple( resultLeftTuple );
                resultLeftTuple.setObject( rightTuple );
            }

            // Don't need to recreate child links, as they will already be there form the first "add"

            RightTupleList rightTuples = query.getResultUpdateRightTupleList();
            if ( rightTuples == null ) {
                rightTuples = new RightTupleList();
                query.setResultUpdateRightTupleList( rightTuples );
                QueryResultUpdateAction updateAction = new QueryResultUpdateAction( context,
                                                                                    this.factHandle,
                                                                                    leftTuple,
                                                                                    this.node );
                context.getQueue2().addFirst( updateAction );
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    }

    public QueryResults getQueryResults(final String query,
                                        final Object[] arguments) {

        Object object = new DroolsQuery( query,
                                         arguments );
        InternalFactHandle handle = this.handleFactory.newFactHandle( object,
                                                                      this.getObjectTypeConfigurationRegistry().getObjectTypeConf( EntryPoint.DEFAULT,
                                                                                                                                   object ),
                                                                      this );
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        try {
            startOperation();
            this.ruleBase.readLock();
            this.lock.lock();
            DroolsQuery queryObject = new DroolsQuery( query,
                                                       arguments,
                                                       new StandardQueryViewChangedEventListener(),
                                                       false );
            InternalFactHandle handle = this.handleFactory.newFactHandle( queryObject,
                                                                          this.getObjectTypeConfigurationRegistry().getObjectTypeConf( EntryPoint.DEFAULT,
                                                                                                                                       queryObject ),
                                                                          this );

            insert( handle,
                    queryObject,
                    null,
                    null,
                    this.typeConfReg.getObjectTypeConf( this.entryPoint,
                                                        queryObject ) );

            this.handleFactory.destroyFactHandle( handle );

            Declaration[] declarations = new Declaration[0];
            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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        try {
            startOperation();
            this.ruleBase.readLock();
            this.lock.lock();
            DroolsQuery queryObject = new DroolsQuery( query,
                                                       arguments,
                                                       new OpenQueryViewChangedEventListenerAdapter(listener),
                                                       true );
            InternalFactHandle handle = this.handleFactory.newFactHandle( queryObject,
                                                                          this.getObjectTypeConfigurationRegistry().getObjectTypeConf( EntryPoint.DEFAULT,
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                    // find the DroolsQuery object
                    while (entry.getParent() != null) {
                        entry = entry.getParent();
                    }
                    DroolsQuery query = (DroolsQuery) entry.getLastHandle().getObject();
                    LeftTuple leftTuple = ( (UnificationNodeViewChangedEventListener) query.getQueryResultCollector() ).getLeftTuple();

                    while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
                        LeftTupleSink childSink = (LeftTupleSink) sinks.get( stream.readInt() );
                        // @TODO check if open query!!!
                        LeftTuple childLeftTuple = childSink.createLeftTuple( leftTuple,
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    public QueryResults getQueryResults(final String query) {
        return getQueryResults( query, null );
    }
    public QueryResults getQueryResults(final String query, final Object[] arguments) {

        Object object = new DroolsQuery( query, arguments );
        InternalFactHandle handle = this.handleFactory.newFactHandle( object );
       
        insert( handle,
                object,
                null,
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Related Classes of org.drools.base.DroolsQuery

  • org.drools.marshalling.impl.InputMarshaller
  • org.drools.marshalling.impl.OutputMarshaller
  • org.drools.reteoo.QueryElementNode
  • org.drools.reteoo.QueryElementNode$UnificationNodeViewChangedEventListener
  • org.drools.reteoo.QueryElementNodeTest$InstrumentedWorkingMemory
  • org.drools.reteoo.QueryTerminalNode
  • org.drools.reteoo.ReteooWorkingMemory
  • org.drools.reteoo.ReteooWorkingMemory$QueryEvaluationAction
  • org.drools.reteoo.ReteooWorkingMemory$QueryResultInsertAction
  • org.drools.reteoo.ReteooWorkingMemory$QueryResultRetractAction
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