Package org.drools.core.spi

Examples of org.drools.core.spi.InternalReadAccessor

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     */
    public String getFieldName() {
        AlphaNodeFieldConstraint constraint = this.node.getConstraint();
        if (constraint instanceof MvelConstraint) {
          MvelConstraint mvelConstraint = (MvelConstraint) constraint;
            InternalReadAccessor accessor = mvelConstraint.getFieldExtractor();
            if (accessor instanceof ClassFieldReader) {
                return ((ClassFieldReader) accessor).getFieldName();
            }
        }
        return null;
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    }

    @Test
    public void testTripleAlpha() {
        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "type",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "type == \"stilton\"",
                                                                new ObjectFieldImpl( "stilton" ),
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    }

    @Test
    public void testTripleAlphaCharacterConstraint() {
        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "charType",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "charType == 65",
                                                               new LongFieldImpl( 65 ),
                                                               extractor );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "charType == 66",
                                                                new LongFieldImpl( 66 ),
                                                                extractor );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "charType == 67",
                                                                new LongFieldImpl( 67 ),
                                                                extractor );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );
        ad.addObjectSink( al3 );

        //this should now be nicely hashed.
        assertNotNull( ad.hashedSinkMap );
        assertNull( ad.hashableSinks );

        // test propagation
        Cheese cheese = new Cheese();
        cheese.setCharType( 'B' );
        CompositeObjectSinkAdapter.HashKey hashKey = new CompositeObjectSinkAdapter.HashKey();

        // should find this
        hashKey.setValue( extractor.getIndex(),
                          cheese,
                          extractor );
        ObjectSink sink = (ObjectSink) ad.hashedSinkMap.get( hashKey );
        assertSame( al2,
                    sink );

        // should not find this one
        cheese.setCharType( 'X' );
        hashKey.setValue( extractor.getIndex(),
                          cheese,
                          extractor );
        sink = (ObjectSink) ad.hashedSinkMap.get( hashKey );
        assertNull( sink );
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    }
   
    @Test
    public void testTripleAlphaObjectCharacterConstraint() {
        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "charObjectType",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit = new MvelConstraintTestUtil( "charObjectType == 65",
                                                               new LongFieldImpl( 65 ),
                                                               extractor );

        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final MvelConstraint lit2 = new MvelConstraintTestUtil( "charObjectType == 66",
                                                                new LongFieldImpl( 66 ),
                                                                extractor );

        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final MvelConstraint lit3 = new MvelConstraintTestUtil( "charObjectType == 67",
                                                                new LongFieldImpl( 67 ),
                                                                extractor );

        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );
        ad.addObjectSink( al3 );

        //this should now be nicely hashed.
        assertNotNull( ad.hashedSinkMap );
        assertNull( ad.hashableSinks );

        // test propagation
        Cheese cheese = new Cheese();
        cheese.setCharObjectType( 'B' );
        CompositeObjectSinkAdapter.HashKey hashKey = new CompositeObjectSinkAdapter.HashKey();

        // should find this
        hashKey.setValue( extractor.getIndex(),
                          cheese,
                          extractor );
        ObjectSink sink = (ObjectSink) ad.hashedSinkMap.get( hashKey );
        assertSame( al2,
                    sink );

        // should not find this one
        cheese.setCharObjectType( 'X' );
        hashKey.setValue( extractor.getIndex(),
                          cheese,
                          extractor );
        sink = (ObjectSink) ad.hashedSinkMap.get( hashKey );
        assertNull( sink );
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    @Test
    public void testPropagationWithNullValue() {

        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                          "type",
                                                          this.getClass().getClassLoader() );

        final MvelConstraint lit1 = new MvelConstraintTestUtil( "type == \"stilton\"",
                                                                new ObjectFieldImpl( "stilton" ),
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        // 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 ) {
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            String normalizedExpr;

            if (!getExprBindings(context, pattern, values[1]).isConstant()) {
                normalizedExpr = subExprs[i++];
            } else {
                InternalReadAccessor extractor = getFieldReadAccessor( context, relDescr, pattern.getObjectType(), values[0], null, true );
                if (extractor == null) {
                    normalizedExpr = subExprs[i++];
                } else {
                    ValueType vtype = extractor.getValueType();
                    LiteralRestrictionDescr restrictionDescr = new LiteralRestrictionDescr( relDescr.getOperator(),
                                                                                            relDescr.isNegated(),
                                                                                            relDescr.getParameters(),
                                                                                            values[1],
                                                                                            LiteralRestrictionDescr.TYPE_STRING );
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                                            String expr,
                                            String value1,
                                            String value2,
                                            boolean isConstant) {

        final InternalReadAccessor extractor = getFieldReadAccessor( context, relDescr, pattern.getObjectType(), value1, null, true );
        return extractor != null && addConstraintToPattern(context, pattern, relDescr, expr, value1, value2, isConstant, extractor);
    }
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            }
        }

        Declaration declr = pattern.addDeclaration( fieldBindingDescr.getVariable() );

        final InternalReadAccessor extractor = getFieldReadAccessor( context,
                                                                     fieldBindingDescr,
                                                                     pattern.getObjectType(),
                                                                     fieldBindingDescr.getBindingField(),
                                                                     declr,
                                                                     true );
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        final Declaration declaration = new Declaration( identifier,
                                                         null,
                                                         pattern,
                                                         true );

        InternalReadAccessor extractor = getFieldReadAccessor( context,
                                                               implicitBinding,
                                                               pattern.getObjectType(),
                                                               implicitBinding.getExpression(),
                                                               declaration,
                                                               false );
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Related Classes of org.drools.core.spi.InternalReadAccessor

  • org.drools.compiler.builder.impl.TypeDeclarationBuilder
  • org.drools.compiler.builder.impl.TypeDeclarationConfigurator
  • org.drools.compiler.compiler.PackageBuilder
  • org.drools.compiler.phreak.BetaNodeBuilder
  • org.drools.compiler.rule.builder.dialect.java.JavaAccumulateBuilder
  • org.drools.compiler.rule.builder.dialect.java.JavaConsequenceBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELAccumulateBuilder
  • org.drools.compiler.rule.builder.dialect.mvel.MVELEvalBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELPredicateBuilderTest
  • org.drools.compiler.rule.builder.PatternBuilder
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