Package org.drools.lang.descr

Examples of org.drools.lang.descr.PackageDescr

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    public void FIXME_testLatinChars() throws Exception {
        final DrlParser parser = new DrlParser();
        final Reader drl = new InputStreamReader( this.getClass().getResourceAsStream( "latin-sample.dslr" ) );
        final Reader dsl = new InputStreamReader( this.getClass().getResourceAsStream( "latin.dsl" ) );

        final PackageDescr pkg = parser.parse( drl,
                                               dsl );

        //MN: will get some errors due to the char encoding on my FC5 install
        //others who use the right encoding may not see this, feel free to uncomment
        //the following assertion.
        assertFalse( parser.hasErrors() );

        assertEquals( "br.com.auster.drools.sample",
                      pkg.getName() );
        assertEquals( 1,
                      pkg.getRules().size() );

    }
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    public void testFunctionWithArrays() throws Exception {
        final DRLParser parser = parseResource( "function_arrays.drl" );

        parser.compilation_unit();
        final PackageDescr pkg = parser.getPackageDescr();

        if ( parser.hasErrors() ) {
            System.err.println( parser.getErrorMessages() );
        }
        assertFalse( parser.hasErrors() );
        assertEquals( "foo",
                      pkg.getName() );
        assertEquals( 1,
                      pkg.getRules().size() );

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );

        assertEqualsIgnoreWhitespace( "yourFunction(new String[3] {\"a\",\"b\",\"c\"});",
                                      (String) rule.getConsequence() );
        final FunctionDescr func = (FunctionDescr) pkg.getFunctions().get( 0 );

        assertEquals( "String[]",
                      func.getReturnType() );
        assertEquals( "args[]",
                      func.getParameterNames().get( 0 ) );
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    }

    public void testEmptyPattern() throws Exception {
        parseResource( "test_EmptyPattern.drl" );
        this.parser.compilation_unit();
        final PackageDescr packageDescr = this.parser.getPackageDescr();
        assertEquals( 1,
                      packageDescr.getRules().size() );
        final RuleDescr ruleDescr = (RuleDescr) packageDescr.getRules().get( 0 );
        assertEquals( "simple rule",
                      ruleDescr.getName() );
        assertNotNull( ruleDescr.getLhs() );
        assertEquals( 1,
                      ruleDescr.getLhs().getDescrs().size() );
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    public void testFunctionImport() throws Exception {
        final DRLParser parser = parseResource( "test_FunctionImport.drl" );
        parser.compilation_unit();
        assertFalse( parser.hasErrors() );

        final PackageDescr pkg = parser.getPackageDescr();
        assertEquals( 2,
                      pkg.getFunctionImports().size() );

        assertEquals( "abd.def.x",
                      ((FunctionImportDescr) pkg.getFunctionImports().get( 0 )).getTarget() );
        assertFalse( ((FunctionImportDescr) pkg.getFunctionImports().get( 0 )).getStartCharacter() == -1 );
        assertFalse( ((FunctionImportDescr) pkg.getFunctionImports().get( 0 )).getEndCharacter() == -1 );
        assertEquals( "qed.wah.*",
                      ((FunctionImportDescr) pkg.getFunctionImports().get( 1 )).getTarget() );
        assertFalse( ((FunctionImportDescr) pkg.getFunctionImports().get( 1 )).getStartCharacter() == -1 );
        assertFalse( ((FunctionImportDescr) pkg.getFunctionImports().get( 1 )).getEndCharacter() == -1 );
    }
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    public void testNotExistWithBrackets() throws Exception {

        final DRLParser parser = parseResource( "not_exist_with_brackets.drl" );

        parser.compilation_unit();
        final PackageDescr pkg = parser.getPackageDescr();

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );

        assertNotNull( rule );
        assertEquals( "simple_rule",
                      rule.getName() );
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    public void testQueryRuleMixed() throws Exception {
        final DRLParser parser = parseResource( "query_and_rule.drl" );
        parser.compilation_unit();

        final PackageDescr pack = parser.getPackageDescr();
        assertEquals( 4,
                      pack.getRules().size() ); //as queries are rules
        RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );
        assertEquals( "bar",
                      rule.getName() );

        QueryDescr query = (QueryDescr) pack.getRules().get( 1 );
        assertEquals( "simple_query",
                      query.getName() );

        rule = (RuleDescr) pack.getRules().get( 2 );
        assertEquals( "bar2",
                      rule.getName() );

        query = (QueryDescr) pack.getRules().get( 3 );
        assertEquals( "simple_query2",
                      query.getName() );

        assertFalse( parser.hasErrors() );
    }
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    public void testMultipleRules() throws Exception {
        final DRLParser parser = parseResource( "multiple_rules.drl" );
        parser.compilation_unit();

        final PackageDescr pkg = parser.getPackageDescr();
        final List rules = pkg.getRules();

        assertEquals( 2,
                      rules.size() );

        final RuleDescr rule0 = (RuleDescr) rules.get( 0 );
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                      err.line );
    }

    public void testExpanderLineSpread() throws Exception {
        final DrlParser parser = new DrlParser();
        final PackageDescr pkg = parser.parse( this.getReader( "expander_spread_lines.dslr" ),
                                               this.getReader( "complex.dsl" ) );

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

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 2,
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    }

    public void testExpanderMultipleConstraints() throws Exception {
        final DrlParser parser = new DrlParser();
        final PackageDescr pkg = parser.parse( this.getReader( "expander_multiple_constraints.dslr" ),
                                               this.getReader( "multiple_constraints.dsl" ) );

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

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 2,
                      rule.getLhs().getDescrs().size() );

        PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "Person",
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    private RuleBase loadRuleBase(final Reader reader) throws IOException,
                                                      DroolsParserException,
                                                      Exception {
        final DrlParser parser = new DrlParser();
        final PackageDescr packageDescr = parser.parse( reader );
        if ( parser.hasErrors() ) {
            System.out.println( parser.getErrors() );
            Assert.fail( "Error messages in parser, need to sort this our (or else collect error messages)" );
        }
        // pre build the package
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  • org.drools.clips.ClipsShell
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  • org.drools.compiler.DrlParser
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  • org.drools.compiler.PackageBuilder
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