Package org.drools.rule

Examples of org.drools.rule.Accumulate

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        }

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

        Accumulate accumulate = new Accumulate(source, declarations);

        generateTemplates("accumulateInnerClass",
                "accumulateInvoker",
                context,
                className,
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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() );

            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 List requiredDeclarations = new ArrayList( initCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers()[0] );

            final List requiredGlobals = new ArrayList( 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()];
            for ( int i = 0, size = requiredDeclarations.size(); i < size; i++ ) {
                declarations[i] = context.getDeclarationResolver().getDeclaration( (String) requiredDeclarations.get( i ) );
            }
            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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        if ( sourcePattern == 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[]) sourcePattern.getOuterDeclarations().values().toArray( new Declaration[0] );

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

            final Map map = createVariableContext( className,
                                                   (String) accumDescr.getExpression(),
                                                   context,
                                                   previousDeclarations,
                                                   sourceDeclArr,
                                                   requiredGlobals );

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

            JavaAccumulatorFunctionExecutor accumulator = new JavaAccumulatorFunctionExecutor( function );

            accumulate = new Accumulate( sourcePattern,
                                         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 List requiredDeclarations = new ArrayList( initCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( actionCodeAnalysis.getBoundIdentifiers()[0] );
            requiredDeclarations.addAll( resultCodeAnalysis.getBoundIdentifiers()[0] );

            final List requiredGlobals = new ArrayList( 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()];
            for ( int i = 0, size = requiredDeclarations.size(); i < size; i++ ) {
                declarations[i] = context.getDeclarationResolver().getDeclaration( (String) requiredDeclarations.get( i ) );
            }
            final Declaration[] sourceDeclArr = (Declaration[]) sourcePattern.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 );

            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( sourcePattern,
                                         declarations,
                                         sourceDeclArr );

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

        }

        final Accumulate accumulate = new Accumulate( sourcePattern,
                                                      declarations,
                                                      sourceDeclArr,
                                                      accumulator );
        return accumulate;
    }
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        accDescr.setActionCode( "total += $cheese.price;" );
        accDescr.setReverseCode( "total -= $cheese.price;" );
        accDescr.setResultCode( "new Integer(total)" );

        final MVELAccumulateBuilder builder = new MVELAccumulateBuilder();
        final Accumulate acc = (Accumulate) builder.build( context,
                                                           accDescr );

        ((MVELCompileable) acc.getAccumulators()[0]).compile( pkgBuilder.getRootClassLoader() );

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        final WorkingMemory wm = ruleBase.newStatefulSession();

        MockLeftTupleSink sink = new MockLeftTupleSink();
        final Cheese cheddar1 = new Cheese( "cheddar",
                                            10 );
        final Cheese cheddar2 = new Cheese( "cheddar",
                                            8 );
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( new InitialFactImpl() );
        final InternalFactHandle f1 = (InternalFactHandle) wm.insert( cheddar1 );
        final InternalFactHandle f2 = (InternalFactHandle) wm.insert( cheddar2 );
        final LeftTuple tuple = new LeftTuple( f0,
                                               sink,
                                               true );

        Object[] wmContext = acc.createWorkingMemoryContext();
        Object[] accContext = acc.createContext();
        acc.init( wmContext,
                  accContext,
                  tuple,
                  wm );

        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f1,
                        wm );
        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f2,
                        wm );

        assertEquals( new Integer( 18 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     wm )[0] );

        acc.reverse( wmContext,
                     accContext,
                     tuple,
                     f1,
                     wm );

        assertEquals( new Integer( 8 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     wm )[0] );
    }
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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() );

            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,
                                                   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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        this.accumulator = new MockAccumulator();

        final ObjectType srcObjType = new ClassObjectType( String.class );
        final Pattern sourcePattern = new Pattern( 0,
                                                srcObjType );
        this.accumulate = new Accumulate( sourcePattern,
                                          new Declaration[0],
                                          new Declaration[0],
                                          this.accumulator );
       
       
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        accDescr.setActionCode( "total += $cheese.price;" );
        accDescr.setReverseCode( "total -= $cheese.price;" );
        accDescr.setResultCode( "new Integer(total)" );

        final MVELAccumulateBuilder builder = new MVELAccumulateBuilder();
        final Accumulate acc = (Accumulate) builder.build( context,
                                                           accDescr );

        ((MVELCompileable) acc.getAccumulator()).compile( pkgBuilder.getRootClassLoader() );

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        final WorkingMemory wm = ruleBase.newStatefulSession();

        MockLeftTupleSink sink = new MockLeftTupleSink();
        final Cheese cheddar1 = new Cheese( "cheddar",
                                            10 );
        final Cheese cheddar2 = new Cheese( "cheddar",
                                            8 );
        final InternalFactHandle f0 = (InternalFactHandle) wm.insert( new InitialFactImpl() );
        final InternalFactHandle f1 = (InternalFactHandle) wm.insert( cheddar1 );
        final InternalFactHandle f2 = (InternalFactHandle) wm.insert( cheddar2 );
        final LeftTuple tuple = new LeftTuple( f0,
                                               sink,
                                               true );

        Object wmContext = acc.createWorkingMemoryContext();
        Object accContext = acc.createContext();
        acc.init( wmContext,
                  accContext,
                  tuple,
                  wm );

        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f1,
                        wm );
        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f2,
                        wm );

        assertEquals( new Integer( 18 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     wm ) );

        acc.reverse( wmContext,
                     accContext,
                     tuple,
                     f1,
                     wm );

        assertEquals( new Integer( 8 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     wm ) );
    }
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        Dialect dialect = dialectRegistry.getDialect( "java" );
               
        RuleDescr ruleDescr = new RuleDescr("test rule");
        RuleBuildContext context = new RuleBuildContext( pkgBuilder, ruleDescr, dialectRegistry, pkg, dialect);
       
        Accumulate accumulate = (Accumulate) builder.build( context, accumDescr );
        String generatedCode = (String) context.getMethods().get( 0 );
       
        assertTrue( generatedCode.contains( "private int x;" ) );
        assertTrue( generatedCode.contains( "private int y;" ) );
        assertTrue( generatedCode.contains( "x = 0;y = 0;" ) );
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        RuleDescr ruleDescr = new RuleDescr("test rule");
        RuleBuildContext context = new RuleBuildContext( conf, pkg, ruleDescr, conf.buildDialectRegistry(), 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() );
    }
View Full Code Here
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