Package org.drools.facttemplates

Examples of org.drools.facttemplates.FactTemplate

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            return null;
        }

        ObjectType objectType = null;

        final FactTemplate factTemplate = context.getPkg().getFactTemplate( patternDescr.getObjectType() );

        if ( factTemplate != null ) {
            objectType = new FactTemplateObjectType( factTemplate );
        } else {
            try {
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        // reportError is needed as some times failure to build accessor is not a failure, just an indication that building is not possible so try something else.
        InternalReadAccessor reader;

        if ( ValueType.FACTTEMPLATE_TYPE.equals( objectType.getValueType() ) ) {
            //@todo use accessor cache           
            final FactTemplate factTemplate = ((FactTemplateObjectType) objectType).getFactTemplate();
            reader = new FactTemplateFieldExtractor( factTemplate,
                                                     factTemplate.getFieldTemplateIndex( fieldName ) );
            if ( target != null ) {
                target.setReadAccessor( reader );
            }
        } else if ( fieldName.indexOf( '.' ) > -1 || fieldName.indexOf( '[' ) > -1 || fieldName.indexOf( '(' ) > -1 ) {
            // we need MVEL extractor for expressions
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            return null;
        }

        ObjectType objectType = null;

        final FactTemplate factTemplate = context.getPkg().getFactTemplate( patternDescr.getObjectType() );

        if ( factTemplate != null ) {
            objectType = new FactTemplateObjectType( factTemplate );
        } else {
            try {
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        // reportError is needed as some times failure to build accessor is not a failure, just an indication that building is not possible so try something else.
        InternalReadAccessor reader;

        if ( ValueType.FACTTEMPLATE_TYPE.equals( objectType.getValueType() ) ) {
            //@todo use accessor cache           
            final FactTemplate factTemplate = ((FactTemplateObjectType) objectType).getFactTemplate();
            reader = new FactTemplateFieldExtractor( factTemplate,
                                                     factTemplate.getFieldTemplateIndex( fieldName ) );
            if ( target != null ) {
                target.setReadAccessor( reader );
            }
        } else if ( ! identifierRegexp.matcher( fieldName ).matches()
                    || ( fieldName.indexOf( '.' ) > -1 || fieldName.indexOf( '[' ) > -1 || fieldName.indexOf( '(' ) > -1 ) ) {
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            return null;
        }

        ObjectType objectType = null;

        final FactTemplate factTemplate = context.getPkg().getFactTemplate( patternDescr.getObjectType() );

        if ( factTemplate != null ) {
            objectType = new FactTemplateObjectType( factTemplate );
        } else {
            try {
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                                             final boolean reportError) {
        FieldExtractor extractor = null;

        if ( objectType.getValueType() == ValueType.FACTTEMPLATE_TYPE ) {
            //@todo use extractor cache           
            final FactTemplate factTemplate = ((FactTemplateObjectType) objectType).getFactTemplate();
            extractor = new FactTemplateFieldExtractor( factTemplate,
                                                        factTemplate.getFieldTemplateIndex( fieldName ) );
        } else {
            try {
                ClassLoader classloader = context.getPkg().getPackageCompilationData().getClassLoader();
                extractor = context.getDialect().getClassFieldExtractorCache().getExtractor( ((ClassObjectType) objectType).getClassType(),
                                                                                             fieldName,
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                                                          "Unable to resolve Class '" + fieldTemplateDescr.getClassType() + "'" ) );
            }
            fields.add( fieldTemplate );
        }

        final FactTemplate factTemplate = new FactTemplateImpl( this.pkg,
                                                                factTemplateDescr.getName(),
                                                                (FieldTemplate[]) fields.toArray( new FieldTemplate[fields.size()] ) );
    }
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                                                                String.class );
        final FieldTemplate cheesePrice = new FieldTemplateImpl( "price",
                                                                 1,
                                                                 Integer.class );
        final FieldTemplate[] fields = new FieldTemplate[]{cheeseName, cheesePrice};
        final FactTemplate cheese = new FactTemplateImpl( pkg,
                                                          "Cheese",
                                                          fields );

        final ObjectType type = new FactTemplateObjectType( cheese );

        final Pattern col = new Pattern( 0,
                                       type,
                                       "foo" );
        final Declaration dec = col.getDeclaration();
        final Extractor ext = dec.getExtractor();
        assertEquals( Fact.class,
                      ext.getExtractToClass() );

        final Fact stilton = cheese.createFact( 10 );
        stilton.setFieldValue( "name",
                               "stilton" );
        stilton.setFieldValue( "price",
                               new Integer( 200 ) );
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        final List list = new ArrayList();
        workingMemory.setGlobal( "list",
                                 list );

        final FactTemplate cheese = pkg.getFactTemplate( "Cheese" );
        final Fact stilton = cheese.createFact( 0 );
        stilton.setFieldValue( "name",
                               "stilton" );
        stilton.setFieldValue( "price",
                               new Integer( 100 ) );
        InternalFactHandle stiltonHandle = (InternalFactHandle) workingMemory.insert( stilton );
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        WorkingMemory wm = ruleBase.newStatefulSession();
        List list = new ArrayList();
        wm.setGlobal( "list",
                      list );

        final FactTemplate cheese = pkg.getFactTemplate( "Settlement" );
        final Fact guitar = cheese.createFact( 0 );
        guitar.setFieldValue( "InstrumentType",
                              "guitar" );
        guitar.setFieldValue( "InstrumentName",
                              "gibson" );
        wm.insert( guitar );
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Related Classes of org.drools.facttemplates.FactTemplate

  • org.drools.compiler.PackageBuilder
  • org.drools.integrationtests.MiscTest
  • org.drools.rule.builder.PatternBuilder
  • org.drools.rule.PatternTest
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