Package org.drools.rule

Examples of org.drools.rule.RuleConditionElement

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            return null;
        }

        final RuleConditionBuilder builder = context.getDialect().getBuilder( accumDescr.getInput().getClass() );

        final RuleConditionElement source = builder.build( context,
                                                           accumDescr.getInput() );

        if ( source == null ) {
            return null;
        }

        Accumulate accumulate = null;

        if ( accumDescr.isExternalFunction() ) {
            // if it is an external function, build a method for it

            final JavaAnalysisResult analysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
                                                                                                        accumDescr,
                                                                                                        accumDescr.getExpression() );

            final List[] usedIdentifiers = analysis.getBoundIdentifiers();

            final List tupleDeclarations = new ArrayList();
            for ( int i = 0, size = usedIdentifiers[0].size(); i < size; i++ ) {
                tupleDeclarations.add( context.getDeclarationResolver().getDeclaration( (String) usedIdentifiers[0].get( i ) ) );
            }

            final Declaration[] previousDeclarations = (Declaration[]) tupleDeclarations.toArray( new Declaration[tupleDeclarations.size()] );
            final String[] requiredGlobals = (String[]) usedIdentifiers[1].toArray( new String[usedIdentifiers[1].size()] );
            final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );

            final String className = "accumulateExpression" + context.getNextId();

            final Map map = createVariableContext( className,
                                                   (String) accumDescr.getExpression(),
                                                   context,
                                                   previousDeclarations,
                                                   sourceDeclArr,
                                                   requiredGlobals );
            map.put( "readLocalsFromTuple", accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );

            AccumulateFunction function = context.getConfiguration().getAccumulateFunction( accumDescr.getFunctionIdentifier() );

            JavaAccumulatorFunctionExecutor accumulator = new JavaAccumulatorFunctionExecutor( function );

            accumulate = new Accumulate( source,
                                         previousDeclarations,
                                         sourceDeclArr,
                                         accumulator );

            generatTemplates( "returnValueMethod",
                              "returnValueInvoker",
                              context,
                              className,
                              map,
                              accumulator,
                              accumDescr );
        } else {
            // ELSE, if it is not an external function, build it using the regular java builder
            final String className = "Accumulate" + context.getNextId();
            accumDescr.setClassName( className );

            final JavaAnalysisResult initCodeAnalysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
                                                                                                                accumDescr,
                                                                                                                accumDescr.getInitCode() );
            final Dialect.AnalysisResult actionCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                                 accumDescr,
                                                                                                 accumDescr.getActionCode() );
            final Dialect.AnalysisResult resultCodeAnalysis = context.getDialect().analyzeExpression( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getResultCode() );

            final Set requiredDeclarations = new HashSet( initCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers()[0] );

            final Set requiredGlobals = new HashSet( initCodeAnalysis.getBoundIdentifiers()[1] );
            requiredGlobals.addAll( actionCodeAnalysis.getBoundIdentifiers()[1] );
            requiredGlobals.addAll( resultCodeAnalysis.getBoundIdentifiers()[1] );

            if ( accumDescr.getReverseCode() != null ) {
                final Dialect.AnalysisResult reverseCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getActionCode() );
                requiredDeclarations.addAll( reverseCodeAnalysis.getBoundIdentifiers()[0] );
                requiredGlobals.addAll( reverseCodeAnalysis.getBoundIdentifiers()[1] );
            }

            final Declaration[] declarations = new Declaration[requiredDeclarations.size()];
            int i = 0;
            for( Iterator it = requiredDeclarations.iterator(); it.hasNext(); i++ ) {
                declarations[i] = context.getDeclarationResolver().getDeclaration( (String) it.next() );
            }
            final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );

            final String[] globals = (String[]) requiredGlobals.toArray( new String[requiredGlobals.size()] );

            final Map map = createVariableContext( className,
                                                   null,
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            }
        }

        // lets see if it maps to a query
        if ( objectType == null ) {
            RuleConditionElement rce = null;
            // it might be a recursive query, so check for same names
            if ( context.getRule().getName().equals( patternDescr.getObjectType() ) ) {
                // it's a query so delegate to the QueryElementBuilder
                QueryElementBuilder qeBuilder = new QueryElementBuilder();
                rce = qeBuilder.build( context,
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            }

            final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder( accumDescr.getInput().getClass() );

            // create source CE
            final RuleConditionElement source = builder.build( context,
                                                               accumDescr.getInput() );

            if ( source == null ) {
                return null;
            }

            MVELDialect dialect = (MVELDialect) context.getDialect();

            Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());           
            Map<String, Declaration> sourceOuterDeclr = source.getOuterDeclarations();              

            Map<String, Class<?>> declarationClasses = context.getDeclarationResolver().getDeclarationClasses( decls );
            declarationClasses.putAll( context.getDeclarationResolver().getDeclarationClasses( sourceOuterDeclr ) );
           
            Accumulator accumulator = null;
                       
            BoundIdentifiers boundIds = new BoundIdentifiers( declarationClasses, context.getPackageBuilder().getGlobals() ) ;         
           
            if ( accumDescr.isExternalFunction() ) {
                // build an external function executor
                AccumulateFunctionCallDescr func = accumDescr.getFunctions().get( 0 );
                AccumulateFunction function = context.getConfiguration().getAccumulateFunction( func.getFunction() );

                if( function == null ) {
                    context.getErrors().add( new DescrBuildError( accumDescr,
                                                                  context.getRuleDescr(),
                                                                  null,
                                                                  "Unknown accumulate function: '"+func.getFunction()+"' on rule '"+context.getRuleDescr().getName()+"'. All accumulate functions must be registered before building a resource." ) );
                    return null;
                }

                final AnalysisResult analysis = dialect.analyzeExpression( context,
                                                                           accumDescr,
                                                                           func.getParams()[0],
                                                                           boundIds );

               
                MVELCompilationUnit unit = dialect.getMVELCompilationUnit( func.getParams()[0],
                                                                           analysis,
                                                                           getUsedDeclarations( decls, analysis ),
                                                                           getUsedDeclarations( sourceOuterDeclr, analysis ),
                                                                           null,
                                                                           context,
                                                                           "drools",
                                                                           KnowledgeHelper.class );

                accumulator = new MVELAccumulatorFunctionExecutor( unit,
                                                                   function );
            } else {
                // it is a custom accumulate
                final MVELAnalysisResult initCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock( context,
                                                                                                       accumDescr,
                                                                                                       accumDescr.getInitCode(),
                                                                                                       boundIds);


                // need to copy boundIds, as this as a "this" object.
                final MVELAnalysisResult actionCodeAnalysis = (MVELAnalysisResult) dialect.analyzeBlock( context,
                                                                                                         accumDescr,
                                                                                                         null,
                                                                                                         accumDescr.getActionCode(),
                                                                                                         boundIds,
                                                                                                         initCodeAnalysis.getMvelVariables(),
                                                                                                         "drools",
                                                                                                         KnowledgeHelper.class );
               
                final MVELAnalysisResult resultCodeAnalysis = (MVELAnalysisResult) dialect.analyzeExpression( context,
                                                                                                              accumDescr,
                                                                                                              accumDescr.getResultCode(),
                                                                                                              boundIds,
                                                                                                              initCodeAnalysis.getMvelVariables() );

                AnalysisResult reverseCodeAnalysis = null;
                if ( accumDescr.getReverseCode() != null ) {
                    reverseCodeAnalysis = dialect.analyzeBlock( context,
                                                                accumDescr,
                                                                null,
                                                                accumDescr.getActionCode(),
                                                                boundIds,
                                                                initCodeAnalysis.getMvelVariables(),
                                                                "drools",
                                                                KnowledgeHelper.class );
                }

               
                MVELCompilationUnit initUnit = dialect.getMVELCompilationUnit( (String) accumDescr.getInitCode(),
                                                                               initCodeAnalysis,
                                                                               getUsedDeclarations( decls, initCodeAnalysis ),
                                                                               getUsedDeclarations( sourceOuterDeclr, initCodeAnalysis ),
                                                                               initCodeAnalysis.getMvelVariables(),
                                                                               context,
                                                                               "drools",
                                                                               KnowledgeHelper.class );

                MVELCompilationUnit actionUnit = dialect.getMVELCompilationUnit( (String) accumDescr.getActionCode(),
                                                                                 actionCodeAnalysis,
                                                                                 getUsedDeclarations( decls, actionCodeAnalysis ),
                                                                                 getUsedDeclarations( sourceOuterDeclr, actionCodeAnalysis ),
                                                                                 initCodeAnalysis.getMvelVariables(),
                                                                                 context,
                                                                                 "drools",
                                                                                 KnowledgeHelper.class );

                MVELCompilationUnit reverseUnit = null;
                if ( accumDescr.getReverseCode() != null ) {
                    reverseUnit = dialect.getMVELCompilationUnit( (String) accumDescr.getReverseCode(),
                                                                  reverseCodeAnalysis,
                                                                  getUsedDeclarations( decls, reverseCodeAnalysis ),
                                                                  getUsedDeclarations( sourceOuterDeclr, reverseCodeAnalysis ),
                                                                  initCodeAnalysis.getMvelVariables(),
                                                                  context,
                                                                  "drools",
                                                                  KnowledgeHelper.class );
                }

                MVELCompilationUnit resultUnit = dialect.getMVELCompilationUnit( (String) accumDescr.getResultCode(),
                                                                                 resultCodeAnalysis,
                                                                                 getUsedDeclarations( decls, resultCodeAnalysis ),
                                                                                 getUsedDeclarations( sourceOuterDeclr, resultCodeAnalysis ),
                                                                                 initCodeAnalysis.getMvelVariables(),
                                                                                 context,
                                                                                 "drools",
                                                                                 KnowledgeHelper.class );

                if ( reverseUnit != null ) {
                    Set<String> shadow = new HashSet<String>( source.getOuterDeclarations().keySet() );
                    shadow.retainAll( reverseCodeAnalysis.getNotBoundedIdentifiers() );
                    shadow.addAll( reverseCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );

                    String[] shadowVars = (String[]) shadow.toArray( new String[shadow.size()] );
                   
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            return null;
        }

        final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder( accumDescr.getInput().getClass() );

        final RuleConditionElement source = builder.build( context,
                                                           accumDescr.getInput() );
       
        Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations( context.getRule() );
        Map<String, Class<?>> declCls = context.getDeclarationResolver().getDeclarationClasses( decls );

        if ( source == null ) {
            return null;
        }

        Accumulate accumulate = null;

        if ( accumDescr.isExternalFunction() ) {
            // if it is an external function, build a method for it
            // TODO: add the support to multiple functions
            AccumulateFunctionCallDescr func = accumDescr.getFunctions().get( 0 );
            AccumulateFunction function = context.getConfiguration().getAccumulateFunction( func.getFunction() );

            if ( function == null ) {
                context.getErrors().add( new DescrBuildError( accumDescr,
                                                              context.getRuleDescr(),
                                                              null,
                                                              "Unknown accumulate function: '" + func.getFunction() + "' on rule '" + context.getRuleDescr().getName() + "'. All accumulate functions must be registered before building a resource." ) );
                return null;
            }

            final JavaAnalysisResult analysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
                                                                                                        accumDescr,
                                                                                                        func.getParams().length > 0 ? func.getParams()[0] : "\"\"",
                                                                                                        new BoundIdentifiers( declCls, context.getPackageBuilder().getGlobals() ) );

            final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();

            final Declaration[] previousDeclarations = usedIdentifiers.getDeclarations().values().toArray(new Declaration[usedIdentifiers.getDeclarations().size()]);
            final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );

            final String className = "accumulateExpression" + context.getNextId();

            final Map<String, Object> map = createVariableContext( className,
                                                                   func.getParams().length > 0 ? func.getParams()[0] : "\"\"",
                                                                   context,
                                                                   previousDeclarations,
                                                                   sourceDeclArr,
                                                                   usedIdentifiers.getGlobals(),
                                                                   null );
            map.put( "readLocalsFromTuple",
                     accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );

            JavaAccumulatorFunctionExecutor accumulator = new JavaAccumulatorFunctionExecutor( function );

            accumulate = new Accumulate( source,
                                         previousDeclarations,
                                         sourceDeclArr,
                                         new Accumulator[]{accumulator} );

            generatTemplates( "returnValueMethod",
                              "returnValueInvoker",
                              context,
                              className,
                              map,
                              accumulator,
                              accumDescr );
        } else {
            // ELSE, if it is not an external function, build it using the regular java builder
            final String className = "Accumulate" + context.getNextId();
            accumDescr.setClassName( className );

            BoundIdentifiers available = new BoundIdentifiers( declCls, context.getPackageBuilder().getGlobals() );

            final JavaAnalysisResult initCodeAnalysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
                                                                                                                accumDescr,
                                                                                                                accumDescr.getInitCode(),
                                                                                                                available );
            final AnalysisResult actionCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                         accumDescr,
                                                                                         accumDescr.getActionCode(),
                                                                                         available );
           
            final AnalysisResult resultCodeAnalysis = context.getDialect().analyzeExpression( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getResultCode(),
                                                                                                      available );

            final Set<String> requiredDeclarations = new HashSet<String>( initCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
            requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
            requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );

            final Map<String, Class<?>> requiredGlobals = new HashMap<String, Class<?>>( initCodeAnalysis.getBoundIdentifiers().getGlobals() );
            requiredGlobals.putAll( actionCodeAnalysis.getBoundIdentifiers().getGlobals() );
            requiredGlobals.putAll( resultCodeAnalysis.getBoundIdentifiers().getGlobals() );

            if ( accumDescr.getReverseCode() != null ) {
                final AnalysisResult reverseCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getActionCode(),
                                                                                                      available );
                requiredDeclarations.addAll( reverseCodeAnalysis.getBoundIdentifiers().getDeclarations().keySet() );
                requiredGlobals.putAll( reverseCodeAnalysis.getBoundIdentifiers().getGlobals() );
            }

           
           
            final Declaration[] declarations = new Declaration[requiredDeclarations.size()];
            int i = 0;
            for ( Iterator<String> it = requiredDeclarations.iterator(); it.hasNext(); i++ ) {
                declarations[i] = decls.get( it.next() );
            }
            final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );

            final Map<String, Object> map = createVariableContext( className,
                                                                   null,
                                                                   context,
                                                                   declarations,
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        if( input instanceof AndDescr && ((AndDescr) input).getDescrs().size() == 1 ) {
            input = ((AndDescr) input).getDescrs().get( 0 );
        }
       
        final RuleConditionBuilder builder = (RuleConditionBuilder) context.getDialect().getBuilder( input.getClass() );
        final RuleConditionElement source = builder.build( context,
                                                           input );
        if ( source == null ) {
            return null;
        }
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                                         final Declaration[] declarations) throws InvalidPatternException {
        final List<String> list = new ArrayList<String>();
        for ( int i = 0, length = declarations.length; i < length; i++ ) {
            boolean resolved = false;
            for ( final ListIterator<RuleConditionElement> it = context.stackIterator(); it.hasPrevious(); ) {
                final RuleConditionElement rce = it.previous();
                final Declaration decl = rce.resolveDeclaration( declarations[i].getIdentifier() );
                if ( decl != null && decl.getPattern().getOffset() <= declarations[i].getPattern().getOffset() ) {
                    resolved = true;
                    break;
                }
            }
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            }
        }

        // lets see if it maps to a query
        if ( objectType == null ) {
            RuleConditionElement rce = null;
            // it might be a recursive query, so check for same names
            if ( context.getRule().getName().equals( patternDescr.getObjectType() ) ) {
                // it's a query so delegate to the QueryElementBuilder
                QueryElementBuilder qeBuilder = new QueryElementBuilder();
                rce = qeBuilder.build( context,
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        }
    }

    private boolean isNegative(final BuildContext context) {
        for( ListIterator<RuleConditionElement> it = context.stackIterator(); it.hasPrevious(); ) {
            RuleConditionElement rce = it.previous();
            if( rce instanceof GroupElement && ((GroupElement)rce).isNot() ) {
                return true;
            }
        }
        return false;
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            if ( this.maps[i].containsKey( (name) ) ) {
                return true;
            }
        }
        for ( int i = this.buildStack.size() - 1; i >= 0; i-- ) {
            final RuleConditionElement rce = (RuleConditionElement) this.buildStack.get( i );
            final Declaration declaration = (Declaration) rce.getInnerDeclarations().get( name );
            if ( declaration != null ) {
                if ( (rce instanceof GroupElement) && ((GroupElement) rce).isOr() ) {
                    // if it is an OR and it is duplicated, we can stop looking for duplication now
                    // as it is a separate logical branch
                    return false;
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            }
        }

        // lets see if it maps to a query
        if ( objectType == null ) {
            RuleConditionElement rce = null;
            // it might be a recursive query, so check for same names
            if ( context.getRule().getName().equals( patternDescr.getObjectType() ) ) {
                // it's a query so delegate to the QueryElementBuilder
                QueryElementBuilder qeBuilder = new QueryElementBuilder();
                rce = qeBuilder.build( context,
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Related Classes of org.drools.rule.RuleConditionElement

  • org.drools.eclipse.DRLInfo$RuleInfo
  • org.drools.lang.api.DescrBuilderTest
  • org.drools.reteoo.builder.AccumulateBuilder
  • org.drools.reteoo.builder.BuildUtils
  • org.drools.reteoo.builder.GroupElementBuilder$AndBuilder
  • org.drools.reteoo.builder.GroupElementBuilder$ExistsBuilder
  • org.drools.reteoo.builder.GroupElementBuilder$NotBuilder
  • org.drools.reteoo.builder.PatternBuilder
  • org.drools.rule.builder.ConditionalBranchBuilder
  • org.drools.rule.builder.dialect.java.JavaAccumulateBuilder
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