ObjectDataCompiler 是用于将一个java 对象填充到template 内生成drl。

• 实际是转为String对象，父类为DataProviderCompiler
• 要注意对象值为空的处理，如果填充遇到null，会导致rule很奇怪。

测试java 代码如下

public class ObjectDataCompilerTest {private static final Logger LOGGER = LoggerFactory.getLogger(ObjectDataCompilerTest.class);public static   void main(String[] args) {ObjectDataCompilerTest test=new ObjectDataCompilerTest();try {test.loadingFromDLRArrayCorrectnessCheck( );test.TenTemplatesManyRules();} catch (Exception e) {throw new RuntimeException(e);}}public void loadingFromDLRArrayCorrectnessCheck() throws Exception {final String[][] rows = new String[3][6];rows[0] = new String[]{"tomato", "weight", "200", "1000", "6", "== Taste.GOOD || == Taste.EXCELENT"};rows[1] = new String[]{"cucumber", "length", "20", "40", "15", "== Taste.EXCELENT"};rows[2] = new String[]{"carrot", "weight", "0", "1000", "2", "== Taste.HORRIBLE"};final ArrayDataProvider adp = new ArrayDataProvider(rows);final DataProviderCompiler converter = new DataProviderCompiler();try (InputStream resourceStream = KieServices.Factory.get().getResources().newClassPathResource("template_1.drl", getClass()).getInputStream()) {final String drl = converter.compile(adp, resourceStream);// prints rules generated from templateSystem.out.println(drl);//            assertEqualsIgnoreWhitespace(EXPECTED_RULES.toString(), drl);//            testCorrectnessCheck(drl);}}public void TenTemplatesManyRules() throws IOException {final KieServices kieServices = KieServices.Factory.get();final ObjectDataCompiler converter = new ObjectDataCompiler();try (InputStream resourceStream = kieServices.getResources().newClassPathResource("template_2.drl", getClass()).getInputStream()) {final String drl = converter.compile(generateParamSetCollection(5),resourceStream);// prints rules generated from templateSystem.out.println(drl);//testManyRules(drl, 500);}}private Collection<ParamSet> generateParamSetCollection(final int loops) {final Collection<ParamSet> result = new ArrayList<>();for (int i = 0; i < loops; i++) {result.add(new ParamSet("tomato", "weight", 200, (1000 + i), 6, EnumSet.of(Taste.GOOD, Taste.EXCELENT)));result.add(new ParamSet("tomato", "weight", 100, (500 + i), 6, EnumSet.of(Taste.BAD)));result.add(new ParamSet("tomato", "length", 5, (10 + i), 6, EnumSet.of(Taste.AVERAGE)));result.add(new ParamSet("tomato", "weight", 300, (4000 + i), 6, EnumSet.of(Taste.GOOD, Taste.EXCELENT)));result.add(new ParamSet("tomato", "weight", 200, (6000 + i), 6, EnumSet.of(Taste.EXCELENT)));result.add(new ParamSet("tomato", "length", 2, (4 + i), 6, EnumSet.of(Taste.AVERAGE, Taste.GOOD)));result.add(new ParamSet("tomato", "weight", 100, (1000 + i), 6, EnumSet.of(Taste.GOOD)));result.add(new ParamSet("tomato", "weight", 500, (1000 + i), 6, EnumSet.of(Taste.EXCELENT)));result.add(new ParamSet("tomato", "length", 4, (15 + i), 6, EnumSet.of(Taste.AVERAGE, Taste.EXCELENT)));result.add(new ParamSet("tomato", "weight", 200, (1000 + i), 6, EnumSet.of(Taste.GOOD, Taste.EXCELENT)));}return result;}