Examples with DMNCompilerContext org.kie.dmn.core.compiler.DMNCompilerContext used on opensource projects

Example 1 with DMNCompilerContext

use of org.kie.dmn.core.compiler.DMNCompilerContext in project drools by kiegroup.

the class DMNAlphaNetworkEvaluatorCompiler method compileDecisionTable.

@Override
protected DMNExpressionEvaluator compileDecisionTable(DMNCompilerContext dmnCompilerContext, DMNModelImpl dmnModelImpl, DMNBaseNode dmnBaseNode, String decisionTableName, DecisionTable decisionTable) {
    DMNFEELHelper feelHelper = dmnCompilerContext.getFeelHelper();
    CompilerContext compilerContext = dmnCompilerContext.toCompilerContext();
    // Parse every cell in the Decision Table
    TableCell.TableCellFactory tableCellFactory = new TableCell.TableCellFactory(feelHelper, compilerContext);
    TableCellParser tableCellParser = new TableCellParser(tableCellFactory);
    DTQNameToTypeResolver resolver = new DTQNameToTypeResolver(compiler, dmnModelImpl, dmnBaseNode.getSource(), decisionTable);
    TableCells tableCells = tableCellParser.parseCells(decisionTable, resolver, decisionTableName);
    GeneratedSources allGeneratedSources = new GeneratedSources();
    DMNAlphaNetworkCompiler dmnAlphaNetworkCompiler = new DMNAlphaNetworkCompiler();
    GeneratedSources generatedSources = dmnAlphaNetworkCompiler.generateSourceCode(decisionTable, tableCells, decisionTableName, allGeneratedSources);
    ReteBuilderContext reteBuilderContext = new ReteBuilderContext();
    ObjectTypeNode firstObjectTypeNodeOfRete = tableCells.createRete(reteBuilderContext);
    // Compile FEEL unary tests to Java source code with row,column index.
    Map<String, String> feelTestClasses = tableCells.createFEELSourceClasses();
    allGeneratedSources.putAllGeneratedFEELTestClasses(feelTestClasses);
    // Generate the ANC
    ObjectTypeNodeCompiler objectTypeNodeCompiler = createAlphaNetworkCompiler(firstObjectTypeNodeOfRete);
    CompiledNetworkSources compiledNetworkSource = objectTypeNodeCompiler.generateSource();
    generatedSources.addNewSourceClasses(compiledNetworkSource.getAllGeneratedSources());
    // Look at target/generated-sources
    generatedSources.dumpGeneratedClasses();
    // Compile everything
    Map<String, Class<?>> compiledClasses = KieMemoryCompiler.compile(generatedSources.getAllGeneratedSources(), this.getClass().getClassLoader());
    Class<?> compiledNetworkClass = compiledClasses.get(compiledNetworkSource.getName());
    CompiledNetwork compiledAlphaNetwork = compiledNetworkSource.createInstanceAndSet(compiledNetworkClass);
    Results results = new Results();
    AlphaNetworkEvaluationContext evaluationContext = new AlphaNetworkEvaluationContext(results);
    DMNAlphaNetworkEvaluator dmnCompiledAlphaNetworkEvaluator = generatedSources.newInstanceOfAlphaNetwork(compiledClasses, compiledAlphaNetwork, evaluationContext);
    // FeelDecisionTable is used at runtime to evaluate Hit Policy / Output values
    // TODO DT-ANC probably need to have all the types in here
    Map<String, Type> variableTypes = new HashMap<>();
    OutputClausesWithType outputClausesWithType = new OutputClausesWithType(dmnModelImpl, decisionTable);
    List<OutputClausesWithType.OutputClauseWithType> outputs = outputClausesWithType.inferTypeForOutputClauses(decisionTable.getOutput());
    FeelDecisionTable feelDecisionTable = new FeelDecisionTable(decisionTableName, outputs, feelHelper, variableTypes, dmnModelImpl.getTypeRegistry().unknown());
    return new DMNAlphaNetworkEvaluatorImpl(dmnCompiledAlphaNetworkEvaluator, feelHelper, decisionTableName, feelDecisionTable, dmnBaseNode, results);
}