Package org.drools.rule

Examples of org.drools.rule.Accumulate

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        RuleDescr ruleDescr = new RuleDescr("test rule");
        RuleBuildContext context = new RuleBuildContext( conf, pkg, ruleDescr, conf.getDialectRegistry(), dialect);
       
        Accumulate accumulate = (Accumulate) builder.build( context, accumDescr );
       
        assertTrue( context.getErrors().toString(), context.getErrors().isEmpty() );
//        System.out.println( context.getInvokers() );
//        System.out.println( context.getMethods() );
    }
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                                                   reverseUnit,
                                                   resultUnit );

            }

            final Accumulate accumulate = new Accumulate( source,
                                                          declarations,
                                                          sourceDeclArr,
                                                          accumulator );

            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
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        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(),
                                                                                                        new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()} );

            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(context.getRule(), (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(),
                                                                                                                new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()} );
            final Dialect.AnalysisResult actionCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                                 accumDescr,
                                                                                                 accumDescr.getActionCode(),
                                                                                                 new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()} );
            final Dialect.AnalysisResult resultCodeAnalysis = context.getDialect().analyzeExpression( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getResultCode(),
                                                                                                      new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()} );

            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(),
                                                                                                      new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()} );
                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(context.getRule(), (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,
                                                   context,
                                                   declarations,
                                                   null,
                                                   globals );

            map.put( "className",
                     accumDescr.getClassName() );
            map.put( "innerDeclarations",
                     sourceDeclArr );
            map.put( "isMultiPattern",
                     accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );

            final String initCode = this.fixInitCode( initCodeAnalysis,
                                                      accumDescr.getInitCode() );
            final String actionCode = accumDescr.getActionCode();
            final String resultCode = accumDescr.getResultCode();

            String[] attributesTypes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
            String[] attributes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
            int index = 0;
            for ( Iterator it = initCodeAnalysis.getLocalVariablesMap().entrySet().iterator(); it.hasNext(); ) {
                Map.Entry entry = (Map.Entry) it.next();
                attributes[index] = (String) entry.getKey();
                attributesTypes[index] = ((JavaLocalDeclarationDescr) entry.getValue()).getType();
            }

            map.put( "attributes",
                     attributes );
            map.put( "attributesTypes",
                     attributesTypes );

            map.put( "initCode",
                     initCode );
            map.put( "actionCode",
                     actionCode );
            map.put( "resultCode",
                     resultCode );
            if ( accumDescr.getReverseCode() == null ) {
                map.put( "reverseCode",
                         "" );
                map.put( "supportsReverse",
                         "false" );
            } else {
                map.put( "reverseCode",
                         accumDescr.getReverseCode() );
                map.put( "supportsReverse",
                         "true" );
            }

            map.put( "hashCode",
                     new Integer( actionCode.hashCode() ) );

            accumulate = new Accumulate( source,
                                         declarations,
                                         sourceDeclArr );

            generatTemplates( "accumulateInnerClass",
                              "accumulateInvoker",
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                                               reverse,
                                               result );

        }

        final Accumulate accumulate = new Accumulate( source,
                                                      declarations,
                                                      sourceDeclArr,
                                                      accumulator );
        return accumulate;
    }
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        final boolean readLocalsFromTuple = PackageBuilderUtil.isReadLocalsFromTuple( accumDescr, source );
       
        Map<String, Declaration> declsInScope = context.getDeclarationResolver().getDeclarations( context.getRule() );
        Map<String, Class< ? >> declCls = DeclarationScopeResolver.getDeclarationClasses( declsInScope );

        Accumulate accumulate = null;
        if ( accumDescr.isExternalFunction() ) {
            // if it uses 1+ external function, build methods for them
            accumulate = buildExternalFunctionCall( context,
                                                    accumDescr,
                                                    source,
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                                                  final AccumulateDescr accumDescr,
                                                  final RuleConditionElement source,
                                                  Map<String, Declaration> declsInScope,
                                                  Map<String, Class< ? >> declCls,
                                                  final boolean readLocalsFromTuple) {
        Accumulate accumulate = null;

        // list of functions to build
        final List<AccumulateFunctionCallDescr> funcCalls = accumDescr.getFunctions();
        // list of available source declarations
        final Declaration[] sourceDeclArr = (Declaration[]) source.getOuterDeclarations().values().toArray( new Declaration[0] );
        Arrays.sort( sourceDeclArr, RuleTerminalNode.SortDeclarations.instance );

        // the accumulator array
        Accumulator[] accumulators = new Accumulator[funcCalls.size()];

        // set of required previous declarations
        Set<Declaration> requiredDecl = new HashSet<Declaration>();

        // creating the custom array reader
        InternalReadAccessor arrayReader = new SelfReferenceClassFieldReader( Object[].class,
                                                                              "this" );

        int index = 0;
        Pattern pattern = (Pattern) context.getBuildStack().peek();
        for ( AccumulateFunctionCallDescr fc : funcCalls ) {
            // find the corresponding function
            AccumulateFunction function = context.getConfiguration().getAccumulateFunction( fc.getFunction() );
            if ( function == null ) {
                context.addError( new DescrBuildError( accumDescr,
                                                              context.getRuleDescr(),
                                                              null,
                                                              "Unknown accumulate function: '" + fc.getFunction() + "' on rule '" + context.getRuleDescr().getName() + "'. All accumulate functions must be registered before building a resource." ) );
                return null;
            }

            // if there is a binding, create the binding
            if ( fc.getBind() != null ) {
                if ( pattern.getDeclaration( fc.getBind() ) != null ) {
                    context.addError(new DescrBuildError(context.getParentDescr(),
                            accumDescr,
                            null,
                            "Duplicate declaration for variable '" + fc.getBind() + "' in the rule '" + context.getRule().getName() + "'"));
                } else {
                    createResultBind( pattern,
                                      index,
                                      arrayReader,
                                      fc,
                                      function );
                }
            }

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

            final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();

            // create the array of used declarations
            final Declaration[] previousDeclarations = collectRequiredDeclarations( declsInScope,
                                                                                    requiredDecl,
                                                                                    usedIdentifiers );

            // generate the code template
            accumulators[index++] = generateFunctionCallCodeTemplate( context,
                                                                      accumDescr,
                                                                      sourceDeclArr,
                                                                      fc,
                                                                      function,
                                                                      usedIdentifiers,
                                                                      previousDeclarations,
                                                                      readLocalsFromTuple );
        }
       
        accumulate = new Accumulate( source,
                                     requiredDecl.toArray( new Declaration[requiredDecl.size()] ),
                                     accumulators,
                                     accumDescr.isMultiFunction() );
        return accumulate;
    }
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                                              final AccumulateDescr accumDescr,
                                              final RuleConditionElement source,
                                              Map<String, Declaration> decls,
                                              Map<String, Class< ? >> declCls,
                                              final boolean readLocalsFromTuple) {
        Accumulate accumulate;
        // 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().getDeclrClasses().keySet() );
        requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers().getDeclrClasses().keySet() );
        requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers().getDeclrClasses().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().getDeclrClasses().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] );
        Arrays.sort( sourceDeclArr, RuleTerminalNode.SortDeclarations.instance );

        final Map<String, Object> map = createVariableContext( className,
                                                               null,
                                                               context,
                                                               declarations,
                                                               null,
                                                               requiredGlobals
        );

        map.put( "className",
                 accumDescr.getClassName() );
        map.put( "innerDeclarations",
                 sourceDeclArr );
        map.put( "isMultiPattern",
                 readLocalsFromTuple ? Boolean.TRUE : Boolean.FALSE );

        final String initCode = this.fixInitCode( initCodeAnalysis,
                                                  accumDescr.getInitCode() );
        final String actionCode = accumDescr.getActionCode();
        final String resultCode = accumDescr.getResultCode();

        String[] attributesTypes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
        String[] attributes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
        int index = 0;
        for ( Map.Entry<String, JavaLocalDeclarationDescr> entry : initCodeAnalysis.getLocalVariablesMap().entrySet() ) {
            attributes[index] = entry.getKey();
            attributesTypes[index] = entry.getValue().getType();
            index++;
        }

        map.put( "attributes",
                 attributes );
        map.put( "attributesTypes",
                 attributesTypes );

        map.put( "initCode",
                 initCode );
        map.put( "actionCode",
                 actionCode );
        map.put( "resultCode",
                 resultCode );
        if ( accumDescr.getReverseCode() == null ) {
            map.put( "reverseCode",
                     "" );
            map.put( "supportsReverse",
                     "false" );
        } else {
            map.put( "reverseCode",
                     accumDescr.getReverseCode() );
            map.put( "supportsReverse",
                     "true" );
        }

        map.put( "hashCode",
                 new Integer( actionCode.hashCode() ) );

        accumulate = new Accumulate( source,
                                     declarations );

        generateTemplates("accumulateInnerClass",
                "accumulateInvoker",
                context,
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        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(),
                                                                                                        new Map[]{context.getDeclarationResolver().getDeclarationClasses(context.getRule()), context.getPackageBuilder().getGlobals()} );

            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(context.getRule(), (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 );

            Map<String,Class<?>>[] available = new Map[]{context.getDeclarationResolver().getDeclarationClasses(context.getRule()), context.getPackageBuilder().getGlobals()};
            final JavaAnalysisResult initCodeAnalysis = (JavaAnalysisResult) context.getDialect().analyzeBlock( context,
                                                                                                                accumDescr,
                                                                                                                accumDescr.getInitCode(),
                                                                                                                available );
            final Dialect.AnalysisResult actionCodeAnalysis = context.getDialect().analyzeBlock( context,
                                                                                                 accumDescr,
                                                                                                 accumDescr.getActionCode(),
                                                                                                 available );
            final Dialect.AnalysisResult resultCodeAnalysis = context.getDialect().analyzeExpression( context,
                                                                                                      accumDescr,
                                                                                                      accumDescr.getResultCode(),
                                                                                                      available );

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

            final Set<String> requiredGlobals = new HashSet<String>( 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(),
                                                                                                      available );
                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(context.getRule(), (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,
                                                   context,
                                                   declarations,
                                                   null,
                                                   globals );

            map.put( "className",
                     accumDescr.getClassName() );
            map.put( "innerDeclarations",
                     sourceDeclArr );
            map.put( "isMultiPattern",
                     accumDescr.isMultiPattern() ? Boolean.TRUE : Boolean.FALSE );

            final String initCode = this.fixInitCode( initCodeAnalysis,
                                                      accumDescr.getInitCode() );
            final String actionCode = accumDescr.getActionCode();
            final String resultCode = accumDescr.getResultCode();

            String[] attributesTypes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
            String[] attributes = new String[initCodeAnalysis.getLocalVariablesMap().size()];
            int index = 0;
            for ( Iterator it = initCodeAnalysis.getLocalVariablesMap().entrySet().iterator(); it.hasNext(); ) {
                Map.Entry entry = (Map.Entry) it.next();
                attributes[index] = (String) entry.getKey();
                attributesTypes[index] = ((JavaLocalDeclarationDescr) entry.getValue()).getType();
            }

            map.put( "attributes",
                     attributes );
            map.put( "attributesTypes",
                     attributesTypes );

            map.put( "initCode",
                     initCode );
            map.put( "actionCode",
                     actionCode );
            map.put( "resultCode",
                     resultCode );
            if ( accumDescr.getReverseCode() == null ) {
                map.put( "reverseCode",
                         "" );
                map.put( "supportsReverse",
                         "false" );
            } else {
                map.put( "reverseCode",
                         accumDescr.getReverseCode() );
                map.put( "supportsReverse",
                         "true" );
            }

            map.put( "hashCode",
                     new Integer( actionCode.hashCode() ) );

            accumulate = new Accumulate( source,
                                         declarations,
                                         sourceDeclArr );

            generatTemplates( "accumulateInnerClass",
                              "accumulateInvoker",
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            Accumulator accumulator = new MVELAccumulatorFunctionExecutor( compilationUnit,
                                                                           accFunction );
            ((MVELCompileable) accumulator).compile( Thread.currentThread().getContextClassLoader() );

            Accumulate accumulate = new Accumulate( sourcePattern,
                                                    new Declaration[]{}, // required declaration
                                                    new Declaration[]{}, // inner declarations
                                                    accumulator );
            AccumulateNode accNode = new AccumulateNode( buildContext.getNextId(),
                                                         leftTupleSource,
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                                                      sourceOuterDeclr,
                                                      boundIds,
                                                      readLocalsFromTuple );
            }

            final Accumulate accumulate = new Accumulate( source,
                                                          null,
                                                          accumulators,
                                                          accumDescr.isMultiFunction() );

            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
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