Package org.drools.spi

Examples of org.drools.spi.DataProvider

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                    ((EvalCondition) element).replaceDeclaration( decl[i],
                                                                  resolved );
                }
            }
        } else if ( element instanceof From ) {
            DataProvider provider = ((From) element).getDataProvider();
            Declaration[] decl = provider.getRequiredDeclarations();
            for ( int i = 0; i < decl.length; i++ ) {
                Declaration resolved = resolver.getDeclaration( null,
                                                                decl[i].getIdentifier() );
                if ( resolved != null && resolved != decl[i] ) {
                    provider.replaceDeclaration( decl[i],
                                                 resolved );
                } else if ( resolved == null ) {
                    // it is probably an implicit declaration, so find the corresponding pattern
                    Pattern old = decl[i].getPattern();
                    Pattern current = resolver.findPatternByIndex( old.getIndex() );
                    if ( current != null && old != current ) {
                        resolved = new Declaration( decl[i].getIdentifier(),
                                                    decl[i].getExtractor(),
                                                    current );
                        provider.replaceDeclaration( decl[i],
                                                     resolved );
                    }
                }
            }
        } else if ( element instanceof QueryElement ) {
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                                contextStack,
                                rce );
            }
            ((Accumulate)element).resetInnerDeclarationCache();
        } else if ( element instanceof From ) {
            DataProvider provider = ((From) element).getDataProvider();
            Declaration[] decl = provider.getRequiredDeclarations();
            for (Declaration aDecl : decl) {
                Declaration resolved = resolver.getDeclaration(null,
                        aDecl.getIdentifier());
                if (resolved != null && resolved != aDecl) {
                    provider.replaceDeclaration(aDecl,
                            resolved);
                } else if (resolved == null) {
                    // it is probably an implicit declaration, so find the corresponding pattern
                    Pattern old = aDecl.getPattern();
                    Pattern current = resolver.findPatternByIndex(old.getIndex());
                    if (current != null && old != current) {
                        resolved = new Declaration(aDecl.getIdentifier(),
                                aDecl.getExtractor(),
                                current);
                        provider.replaceDeclaration(aDecl,
                                resolved);
                    }
                }
            }
        } else if ( element instanceof QueryElement ) {
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                                      final BaseDescr descr,
                                      final Pattern prefixPattern) {
        final FromDescr fromDescr = (FromDescr) descr;

        final AccessorDescr accessor = (AccessorDescr) fromDescr.getDataSource();
        DataProvider dataProvider = null;
        try {
            final DroolsMVELFactory factory = new DroolsMVELFactory( context.getDeclarationResolver().getDeclarations(),
                                                                     null,
                                                                     context.getPkg().getGlobals() );
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                    ((EvalCondition) element).replaceDeclaration( decl[i],
                                                                  resolved );
                }
            }
        } else if ( element instanceof From ) {
            DataProvider provider = ((From) element).getDataProvider();
            Declaration[] decl = provider.getRequiredDeclarations();
            for ( int i = 0; i < decl.length; i++ ) {
                Declaration resolved = resolver.getDeclaration( null,
                                                                decl[i].getIdentifier() );
                if ( resolved != null && resolved != decl[i] ) {
                    provider.replaceDeclaration( decl[i],
                                                 resolved );
                } else if ( resolved == null ) {
                    // it is probably an implicit declaration, so find the corresponding pattern
                    Pattern old = decl[i].getPattern();
                    Pattern current = resolver.findPatternByIndex( old.getIndex() );
                    if ( current != null && old != current ) {
                        resolved = new Declaration( decl[i].getIdentifier(),
                                                    decl[i].getExtractor(),
                                                    current );
                        provider.replaceDeclaration( decl[i],
                                                     resolved );
                    }
                }
            }
        } else {
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                                contextStack,
                                rce );
            }
            ((Accumulate)element).resetInnerDeclarationCache();
        } else if ( element instanceof From ) {
            DataProvider provider = ((From) element).getDataProvider();
            Declaration[] decl = provider.getRequiredDeclarations();
            for (Declaration aDecl : decl) {
                Declaration resolved = resolver.getDeclaration(null,
                        aDecl.getIdentifier());
                if (resolved != null && resolved != aDecl) {
                    provider.replaceDeclaration(aDecl,
                            resolved);
                } else if (resolved == null) {
                    // it is probably an implicit declaration, so find the corresponding pattern
                    Pattern old = aDecl.getPattern();
                    Pattern current = resolver.findPatternByIndex(old.getIndex());
                    if (current != null && old != current) {
                        resolved = new Declaration(aDecl.getIdentifier(),
                                aDecl.getExtractor(),
                                current);
                        provider.replaceDeclaration(aDecl,
                                resolved);
                    }
                }
            }
        } else if ( element instanceof QueryElement ) {
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            BetaMemory bm = fm.getBetaMemory();
            ContextEntry[] context = bm.getContext();
            BetaConstraints betaConstraints = fromNode.getBetaConstraints();
            AlphaNodeFieldConstraint[] alphaConstraints = fromNode.getAlphaConstraints();
            DataProvider dataProvider = fromNode.getDataProvider();
            Class resultClass = fromNode.getResultClass();

            for ( LeftTuple leftTuple = srcLeftTuples.getInsertFirst(); leftTuple != null; ) {
                LeftTuple next = leftTuple.getStagedNext();
               
                PropagationContext propagationContext = leftTuple.getPropagationContext();
               
                Map<Object, RightTuple> matches = null;
                boolean useLeftMemory = true;      
                if ( !tupleMemoryEnabled ) {
                    // This is a hack, to not add closed DroolsQuery objects
                    Object object = leftTuple.get( 0 ).getObject();
                    if ( !(object instanceof DroolsQuery) || !((DroolsQuery) object).isOpen() ) {
                        useLeftMemory = false;
                    }
                }

                if ( useLeftMemory ) {
                    fm.betaMemory.getLeftTupleMemory().add( leftTuple );
                    matches = new LinkedHashMap<Object, RightTuple>();
                    leftTuple.setObject( matches );
                }        

                betaConstraints.updateFromTuple( context,
                                                 wm,
                                                 leftTuple );

                for ( final java.util.Iterator< ? > it = dataProvider.getResults( leftTuple,
                                                                                  wm,
                                                                                  propagationContext,
                                                                                  fm.providerContext ); it.hasNext(); ) {
                    final Object object = it.next();
                    if ( !resultClass.isAssignableFrom( object.getClass() ) ) {
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            BetaMemory bm = fm.getBetaMemory();
            LeftTupleMemory ltm = bm.getLeftTupleMemory();
            ContextEntry[] context = bm.getContext();
            BetaConstraints betaConstraints = fromNode.getBetaConstraints();
            AlphaNodeFieldConstraint[] alphaConstraints = fromNode.getAlphaConstraints();
            DataProvider dataProvider = fromNode.getDataProvider();
            Class resultClass = fromNode.getResultClass();

            for ( LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
                LeftTuple next = leftTuple.getStagedNext();
                              
                PropagationContext propagationContext = leftTuple.getPropagationContext();

                ltm.removeAdd( leftTuple );

                final Map<Object, RightTuple> previousMatches = (Map<Object, RightTuple>) leftTuple.getObject();
                final Map<Object, RightTuple> newMatches = new HashMap<Object, RightTuple>();
                leftTuple.setObject( newMatches );

                betaConstraints.updateFromTuple( context,
                                                      wm,
                                                      leftTuple );

                FastIterator rightIt = LinkedList.fastIterator;
                for ( final java.util.Iterator< ? > it = dataProvider.getResults( leftTuple,
                                                                                  wm,
                                                                                  propagationContext,
                                                                                  fm.providerContext ); it.hasNext(); ) {
                    final Object object = it.next();
                    if ( !resultClass.isAssignableFrom( object.getClass() ) ) {
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                    ((EvalCondition) element).replaceDeclaration( decl[i],
                                                                  resolved );
                }
            }
        } else if ( element instanceof From ) {
            DataProvider provider = ((From) element).getDataProvider();
            Declaration[] decl = provider.getRequiredDeclarations();
            for ( int i = 0; i < decl.length; i++ ) {
                Declaration resolved = resolver.getDeclaration( null,
                                                                decl[i].getIdentifier() );
                if ( resolved != null && resolved != decl[i] ) {
                    provider.replaceDeclaration( decl[i],
                                                 resolved );
                } else if ( resolved == null ) {
                    // it is probably an implicit declaration, so find the corresponding pattern
                    Pattern old = decl[i].getPattern();
                    Pattern current = resolver.findPatternByIndex( old.getIndex() );
                    if ( current != null && old != current ) {
                        resolved = new Declaration( decl[i].getIdentifier(),
                                                    decl[i].getExtractor(),
                                                    current );
                        provider.replaceDeclaration( decl[i],
                                                     resolved );
                    }
                }
            }
        } else if ( element instanceof QueryElement ) {
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Related Classes of org.drools.spi.DataProvider

  • org.drools.phreak.RuleNetworkEvaluatorActivation$PhreakFromNode
  • org.drools.rule.builder.dialect.mvel.MVELFromBuilder
  • org.drools.rule.LogicTransformer
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