Package org.drools.compiler.compiler

Examples of org.drools.compiler.compiler.PackageBuilder$TypeDefinition

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        rule += "    $p : Person( cheese == $c ) \n";
        rule += "then\n";
        rule += "    list.add( $p );\n";
        rule += "end";

        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( rule ) );
        final Package pkg = builder.getPackage();

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );

        // Make sure the rete node map is created correctly
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        rule3 += "then\n";
        rule3 += "    list.add( $c );\n";
        rule3 += "    drools.halt();\n";
        rule3 += "end";

        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( rule1 ) );
        builder.addPackageFromDrl( new StringReader( rule2 ) );
        builder.addPackageFromDrl( new StringReader( rule3 ) );
        final Package pkg = builder.getPackage();

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );

        StatefulSession session = ruleBase.newStatefulSession();
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        rule2 += "        insertLogical( person );\n";
        rule2 += "    }\n" +
                 "    drools.halt();\n";
        rule2 += "end\n";

        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( header + rule1 ) );
        builder.addPackageFromDrl( new StringReader( header + rule2 ) );
        final Package pkg = builder.getPackage();

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );

        StatefulSession session = ruleBase.newStatefulSession();
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        rule4 += "then\n";
        rule4 += "    list.add( \"rule4\" );\n";
        rule4 += "    drools.halt();\n";
        rule4 += "end";

        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( rule1 ) );
        builder.addPackageFromDrl( new StringReader( rule2 ) );
        builder.addPackageFromDrl( new StringReader( rule3 ) );
        builder.addPackageFromDrl( new StringReader( rule4 ) );

        final Package pkg = builder.getPackage();

        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject( ruleBase );
        StatefulSession session = ruleBase.newStatefulSession();
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        rule4 += "then\n";
        rule4 += "    list.add( \"rule4\" );\n";
        rule4 += "    drools.halt();\n";
        rule4 += "end";

        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( rule1 ) );
        builder.addPackageFromDrl( new StringReader( rule2 ) );
        builder.addPackageFromDrl( new StringReader( rule3 ) );
        builder.addPackageFromDrl( new StringReader( rule4 ) );

        final Package pkg = builder.getPackage();

        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject( ruleBase );
        StatefulSession session = ruleBase.newStatefulSession();
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                      list.get( 2 ) );
    }

    @Test
    public void testAccumulate() throws Exception {
        PackageBuilder builder = new PackageBuilder();
        Reader source = new StringReader( "package org.drools\n" +
                "import org.drools.compiler.Message\n" +
                "global java.util.List results\n" +
                "rule MyRule\n" +
                "  when\n" +
                "    $n : Number( intValue >= 2 ) from accumulate ( m: Message( ), count( m ) )\n" +
                "  then\n" +
                "    results.add($n);\n" +
                "end" );
        builder.addPackageFromDrl( source );
        Package pkg = builder.getPackage();
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           new ArrayList() );
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                      ((Number) results.get( 1 )).intValue() );
    }

    @Test
    public void testAccumulate2() throws Exception {
        PackageBuilder builder = new PackageBuilder();
        Reader source = new StringReader( "package org.drools\n" + "\n" + "import org.drools.compiler.Message\n" + "\n" + "rule MyRule\n" + "  when\n" + "    Number( intValue >= 5 ) from accumulate ( m: Message( ), count( m ) )\n" + "  then\n"
                                          + "    System.out.println(\"Found messages\");\n" + "end" );
        builder.addPackageFromDrl( source );
        Package pkg = builder.getPackage();
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );
        StatefulSession session = ruleBase.newStatefulSession();
        session.fireAllRules();
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        final RuleDescr ruleDescr = new RuleDescr( "rule 1" );
        ruleDescr.addAttribute( new AttributeDescr( "salience",
                                                    "(p.age + 20)/2" ) );
        ruleDescr.setConsequence( "" );

        PackageBuilder pkgBuilder = new PackageBuilder( pkg );
        DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect( "mvel" );

        context = new InstrumentedBuildContent( pkgBuilder,
                                                ruleDescr,
                                                dialectRegistry,
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public class MVELAccumulateBuilderTest {

    @Test
    public void testSimpleExpression() {
        PackageBuilder pkgBuilder = new PackageBuilder();
        pkgBuilder.addPackage( new PackageDescr( "pkg1" ) );

        final Package pkg = pkgBuilder.getPackage();
        final RuleDescr ruleDescr = new RuleDescr( "rule 1" );

        final PackageBuilderConfiguration conf = pkgBuilder.getPackageBuilderConfiguration();
        DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect( "mvel" );

        final RuleBuildContext context = new RuleBuildContext( pkgBuilder,
                                                               ruleDescr,
                                                               dialectRegistry,
                                                               pkg,
                                                               mvelDialect );

        final AccumulateDescr accDescr = new AccumulateDescr();
        final PatternDescr inputPattern = new PatternDescr( "org.drools.compiler.Cheese",
                                                            "$cheese" );
        accDescr.setInputPattern( inputPattern );
        accDescr.setInitCode( "total = 0;" );
        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( (MVELDialectRuntimeData) pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectRuntimeRegistry().getDialectData( "mvel" ) );

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

        MockLeftTupleSink sink = new MockLeftTupleSink();
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public class MVELDebugTest {

    @Test
    public void testDebug() throws Exception {
        String rule = "package com.sample; dialect \"mvel\" rule myRule when then\n System.out.println( \"test\" ); end";
        PackageBuilder builder = new PackageBuilder();
        DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);
        PackageDescr packageDescr = parser.parse(null, rule);
        RuleDescr ruleDescr = packageDescr.getRules().get(0);
        builder = new PackageBuilder( );
        builder.addPackage(packageDescr);
        Package pkg = builder.getPackage();
        MVELConsequence consequence = (MVELConsequence) pkg.getRule("myRule").getConsequence();
        String sourceName = ((CompiledExpression) consequence.getCompExpr()).getSourceName();
        System.out.println(sourceName);
        String ruleName = ruleDescr.getNamespace() + "." + ruleDescr.getClassName();
        System.out.println(ruleName);
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  • org.drools.compiler.builder.impl.KnowledgeBuilderFactoryServiceImpl
  • org.drools.compiler.CommonTestMethodBase
  • org.drools.compiler.compiler.xml.XmlPackageReader
  • org.drools.compiler.integrationtests.ConsequenceOffsetTest
  • org.drools.compiler.integrationtests.DynamicRulesTest
  • org.drools.compiler.integrationtests.ExecutionFlowControlTest
  • org.drools.compiler.integrationtests.FirstOrderLogicTest
  • org.drools.compiler.integrationtests.KnowledgeBuilderTest
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