Examples of org.drools.compiler.DrlParser

org.drools.compiler.DrlParser
This is a low level parser API. This will return textual AST representations of the DRL source, including with DSL expanders if appropriate.

            RuleIntegrationException,
            PackageIntegrationException,
            InvalidPatternException {
        //read in the source
        final Reader reader = new InputStreamReader( WaltzBenchmark.class.getResourceAsStream( "/waltz.drl" ) );
        final DrlParser parser = new DrlParser();
        final PackageDescr packageDescr = parser.parse( reader );


        //pre build the package
        final PackageBuilder builder = new PackageBuilder();
        builder.addPackage( packageDescr );
        final org.drools.rule.Package pkg = builder.getPackage();

View Full Code Here

        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "nested_fields.drl" ) ) );


        assertFalse( builder.getErrors().toString(),
                     builder.hasErrors() );


        DrlParser parser = new DrlParser();
        PackageDescr desc = parser.parse( new InputStreamReader( getClass().getResourceAsStream( "nested_fields.drl" ) ) );
        List packageAttrs = desc.getAttributes();
        assertEquals( 1,
                      desc.getRules().size() );
        assertEquals( 1,
                      packageAttrs.size() );

View Full Code Here

                      ((List) workingMemory.getGlobal( "list" )).get( 5 ) );
    }


    @Test
    public void testFromWithNewConstructor() throws Exception {
        DrlParser parser = new DrlParser();
        PackageDescr descr = parser.parse( new InputStreamReader( getClass().getResourceAsStream( "test_FromWithNewConstructor.drl" ) ) );
        PackageBuilder builder = new PackageBuilder();
        builder.addPackage( descr );
        Package pkg = builder.getPackage();
        pkg.checkValidity();
        pkg = SerializationHelper.serializeObject( pkg );

View Full Code Here

        assertTrue( rhsError.getLine() >= 8 && rhsError.getLine() <= 17 ); // TODO this should be 16
    }


    @Test
    public void testErrorsParser() throws Exception {
        final DrlParser parser = new DrlParser();
        assertEquals( 0,
                      parser.getErrors().size() );
        parser.parse( new InputStreamReader( getClass().getResourceAsStream( "errors_parser_multiple.drl" ) ) );
        assertTrue( parser.hasErrors() );
        assertTrue( parser.getErrors().size() > 0 );
        assertTrue( parser.getErrors().get( 0 ) instanceof ParserError );
        final ParserError first = ((ParserError) parser.getErrors().get( 0 ));
        assertTrue( first.getMessage() != null );
        assertFalse( first.getMessage().equals( "" ) );
    }

View Full Code Here

    }


    @Test
    @Ignore
    public void testDumpers() throws Exception {
        final DrlParser parser = new DrlParser();
        final PackageDescr pkg = parser.parse( new InputStreamReader( getClass().getResourceAsStream( "test_Dumpers.drl" ) ) );


        if ( parser.hasErrors() ) {
            for ( DroolsError error : parser.getErrors() ) {
                System.err.println( error );
            }
            fail( parser.getErrors().toString() );
        }


        PackageBuilder builder = new PackageBuilder();
        builder.addPackage( pkg );


        RuleBase ruleBase = getRuleBase();
        ruleBase.addPackage( builder.getPackage() );
        ruleBase = SerializationHelper.serializeObject( ruleBase );
        WorkingMemory workingMemory = ruleBase.newStatefulSession();


        List list = new ArrayList();
        workingMemory.setGlobal( "list",
                                 list );


        final Cheese brie = new Cheese( "brie",
                                        12 );
        workingMemory.insert( brie );


        workingMemory.fireAllRules();


        assertEquals( 3,
                      list.size() );
        assertEquals( "3 1",
                      list.get( 0 ) );
        assertEquals( "MAIN",
                      list.get( 1 ) );
        assertEquals( "1 1",
                      list.get( 2 ) );


        final DrlDumper drlDumper = new DrlDumper();
        final String drlResult = drlDumper.dump( pkg );
        builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( drlResult ) );


        if ( builder.hasErrors() ) {
            for ( DroolsError error : builder.getErrors().getErrors() ) {
                System.err.println( error );
            }
            fail( parser.getErrors().toString() );
        }


        ruleBase = getRuleBase();
        ruleBase.addPackage( builder.getPackage() );
        workingMemory = ruleBase.newStatefulSession();


        list = new ArrayList();
        workingMemory.setGlobal( "list",
                                 list );


        workingMemory.insert( brie );


        workingMemory.fireAllRules();


        assertEquals( 3,
                      list.size() );
        assertEquals( "3 1",
                      list.get( 0 ) );
        assertEquals( "MAIN",
                      list.get( 1 ) );
        assertEquals( "1 1",
                      list.get( 2 ) );


        final XmlDumper xmlDumper = new XmlDumper();
        final String xmlResult = xmlDumper.dump( pkg );


        // System.out.println( xmlResult );


        builder = new PackageBuilder();
        builder.addPackageFromXml( new StringReader( xmlResult ) );


        if ( builder.hasErrors() ) {
            for ( DroolsError error : builder.getErrors().getErrors() ) {
                System.err.println( error );
            }
            fail( parser.getErrors().toString() );
        }


        ruleBase = getRuleBase();
        ruleBase.addPackage( builder.getPackage() );
        workingMemory = ruleBase.newStatefulSession();

View Full Code Here

    }


    private RuleBase loadRuleBase( final Reader reader ) throws IOException,
                                                        DroolsParserException,
                                                        Exception {
        final DrlParser parser = new DrlParser();
        final PackageDescr packageDescr = parser.parse( reader );
        if ( parser.hasErrors() ) {
            fail( "Error messages in parser, need to sort this our (or else collect error messages):\n"
                    + parser.getErrors() );
        }
        // pre build the package
        final PackageBuilder builder = new PackageBuilder();
        builder.addPackage( packageDescr );

View Full Code Here

    @Test
    @Ignore
    public void testIncompleteCode1() throws DroolsParserException,
            RecognitionException {
        String input = "package a.b.c import a.b.c.* rule MyRule when Class ( property memberOf collexction ";
        DrlParser parser = new DrlParser();
        PackageDescr descr = parser.parse(true, input);
        System.out.println(parser.getErrors());


        assertNotNull(descr);
        assertEquals("a.b.c", descr.getNamespace());
        assertEquals("a.b.c.*", ((ImportDescr) descr.getImports().get(0))
                .getTarget());


        assertEquals(Location.LOCATION_LHS_INSIDE_CONDITION_END,
                getLastIntegerValue(parser.getEditorSentences().get(2)
                        .getContent()));
    }

View Full Code Here

    @Test
    @Ignore
    public void testIncompleteCode2() throws DroolsParserException,
            RecognitionException {
        String input = "rule MyRule when Class ( property memberOf collection ";
        DrlParser parser = new DrlParser();
        PackageDescr descr = parser.parse(true, input);


        assertNotNull(descr);
        assertEquals(Location.LOCATION_LHS_INSIDE_CONDITION_END,
                getLastIntegerValue(parser.getEditorSentences().get(0)
                        .getContent()));
    }

View Full Code Here


    @Test
    public void testIncompleteCode3() throws DroolsParserException,
            RecognitionException {
        String input = "rule MyRule when Class ( property > somevalue ) then end query MyQuery Class ( property == collection ) end ";
        DrlParser parser = new DrlParser();
        PackageDescr descr = parser.parse(true, input);


        assertNotNull(descr);
        assertEquals("MyRule", ((RuleDescr) descr.getRules().get(0)).getName());


        assertNotNull(descr);
        assertEquals("MyQuery", ((RuleDescr) descr.getRules().get(1)).getName());


        assertEquals(Location.LOCATION_RHS, getLastIntegerValue(parser
                .getEditorSentences().get(0).getContent()));
    }

View Full Code Here

    public void testIncompleteCode4() throws DroolsParserException,
            RecognitionException {
        String input = "package a.b.c import a.b.c.*"
                + " rule MyRule when Class ( property == collection ) then end "
                + " query MyQuery Class ( property == collection ) end ";
        DrlParser parser = new DrlParser();
        PackageDescr descr = parser.parse(true, input);


        assertEquals("a.b.c", descr.getNamespace());
        assertEquals("a.b.c.*", ((ImportDescr) descr.getImports().get(0))
                .getTarget());

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.drools.compiler.DrlParser

org.antlr.runtime.ANTLRInputStream

org.antlr.runtime.ANTLRReaderStream

org.antlr.runtime.ANTLRStringStream

org.antlr.runtime.CommonTokenStream

org.antlr.runtime.tree.CommonTreeNodeStream

org.drools.analytics.AnalyticsTestStandalone

org.drools.analytics.TestBase

org.drools.benchmark.benchmarks.WaltzBenchmark

org.drools.CommonTestMethodBase

org.drools.compiler.xml.rules.DumperTestHelper

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.