/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param templateStream the InputStream for reading the templates * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final InputStream templateStream) { return compile(dataProvider,templateStream, true ); }
private void processData(final DataProvider dataProvider, List<DataListener> listeners) { for (int i = 0; dataProvider.hasNext(); i++) { String[] row = dataProvider.next(); newRow(listeners, i, row.length); for (int cellNum = 0; cellNum < row.length; cellNum++) { String cell = row[cellNum]; newCell(listeners, i, cellNum, cell, DataListener.NON_MERGED); } } finishData(listeners); }
/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param templateStream the InputStream for reading the templates * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final InputStream templateStream, boolean replaceOptionals) { DefaultTemplateContainer tc = new DefaultTemplateContainer(templateStream, replaceOptionals); closeStream(templateStream); return compile(dataProvider, new TemplateDataListener(tc)); }
/** * Compile templates, substituting from a collection of maps or objects * into the given template. * * @param objs objs the collection of maps or objects * @param templateStream the template as a stream * @return the expanded rules as a string */ public String compile(final Collection<?> objs, final InputStream templateStream) { TemplateContainer tc = new DefaultTemplateContainer(templateStream); closeStream(templateStream); return compile(new ObjectDataProvider(tc, objs), new TemplateDataListener(tc)); } }
@Override public String marshal(final RuleModel model) { //Build rule final String ruleTemplate = marshalRule(model); log.debug("ruleTemplate:\n{}", ruleTemplate); log.debug("generated template:\n{}", ruleTemplate); final DataProvider dataProvider = chooseDataProvider(model); final DataProviderCompiler tplCompiler = new DataProviderCompiler(); final InputStream templateStream = new ByteArrayInputStream(ruleTemplate.getBytes(IoUtils.UTF8_CHARSET)); final DefaultTemplateContainer tc = new DefaultTemplateContainer(templateStream, false); final TemplateDataListener listener = new TemplateDataListener(tc, false); final String generatedDrl = tplCompiler.compile(dataProvider, listener); log.debug("generated drl:\n{}", generatedDrl); return generatedDrl; }
ObjectDataCompiler compiler = new ObjectDataCompiler(); String generatedDRL = compiler.compile(ruleAttributes, new FileInputStream(REGULATION_TEMPLATE_FILE));
public static void main(String[] args) { InputStream template = RuleTemplateArrayDemo.class.getResourceAsStream("/com/template/template.drt"); DataProvider dataProvider = new ArrayDataProvider(new String[][]{ {"1", "Tom"}, {"2", "Lucy"} }); DataProviderCompiler compiler = new DataProviderCompiler(); String drl = compiler.compile(dataProvider, template); KieSession kieSession = getKieSessionByDrl(drl); Person person = new Person(1,""); kieSession.insert(person); kieSession.fireAllRules(); System.out.println("Person's username is " + person.getUsername()); }
protected void addPolicyRule(DroolsPolicyRule uriPolicyRule) { InputStream templateStream = DroolsPolicy.class.getClassLoader().getResourceAsStream("templates/DroolsPolicyTemplate.drl"); DroolsPolicyTemplateDataProvider tdp = new DroolsPolicyTemplateDataProvider(uriPolicyRule); DataProviderCompiler converter = new DataProviderCompiler(); String drl = converter.compile(tdp, templateStream); if (log.isDebugEnabled()) { log.debug("------------ ADDING NEW POLICY RULE INTO DROOLS ENGINE ----------------------"); log.debug(drl); log.debug("------------ END NEW POLICY RULE ------------------"); } // Then add it into drools RuleBase addPackage(drl); }
/** * Compile templates, substituting from a collection of maps or objects * into the given template. * * @param objs the collection of maps or objects * @param template the template resource pathname * @return the expanded rules as a string */ public String compile(final Collection<?> objs, final String template) { final InputStream templateStream = this.getClass().getResourceAsStream(template); return compile(objs, templateStream); }
/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param listener a template data listener * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final TemplateDataListener listener, boolean replaceOptionals) { List<DataListener> listeners = new ArrayList<DataListener>(); listeners.add(listener); processData(dataProvider, listeners); return listener.renderDRL(); }
/** * Add rule by instantiating a template * @param rule containing template * @return instantiated string */ private String instantiateTemplate(InstanceORM rule) { // create Drools template compiler ObjectDataCompiler compiler = new ObjectDataCompiler(); // get parameters Collection<Map<String, String>> paramsMap = new ArrayList<>(); Map<String, String> fields = rule.getFieldsAsMap(); // populate fields from string Collection collection = Collections.singletonList(fields); InputStream template = new ByteArrayInputStream(rule.getRule().getBytes()); // return compiled rule return compiler.compile(collection, template); }
/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param listener a template data listener * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final TemplateDataListener listener) { return compile(dataProvider, listener, true); }
public static void main(String[] args) throws SQLException { InputStream template = RuleTemplateArrayDemo.class.getResourceAsStream("/com/template/template.drt"); List<Person> personList = new ArrayList<>(); personList.add(new Person(1,"Tom")); personList.add(new Person(2,"Lucy")); ObjectDataCompiler dataCompiler = new ObjectDataCompiler(); String drl = dataCompiler.compile(personList, template); KieSession kieSession = getKieSessionByDrl(drl); Person person = new Person(1,""); kieSession.insert(person); kieSession.fireAllRules(); System.out.println("Person's username is " + person.getUsername()); // sql /*Connection connection = null; Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("select id, username from user "); ResultSetGenerator generator = new ResultSetGenerator(); String drl = generator.compile(resultSet, template);*/ }
/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param template the string containing the template resource name * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final String template) { final InputStream templateStream = this.getClass().getResourceAsStream(template); return compile(dataProvider, templateStream); }
/** * Generates DRL from a data provider for the spreadsheet data and templates. * * @param dataProvider the data provider for the spreadsheet data * @param template the string containing the template resource name * @return the generated DRL text as a String */ public String compile(final DataProvider dataProvider, final String template, boolean replaceOptionals) { final InputStream templateStream = this.getClass().getResourceAsStream(template); return compile(dataProvider, templateStream); }