Java tutorial
/******************************************************************************* * Copyright (c)2014 Prometheus Consulting * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ package nz.co.senanque.directed; import static org.junit.Assert.*; import java.util.ArrayList; import java.util.List; import java.util.Map; import nz.co.senanque.rules.RulesPlugin; import nz.co.senanque.directed.Customer; import nz.co.senanque.validationengine.FieldMetadata; import nz.co.senanque.validationengine.ObjectMetadata; import nz.co.senanque.validationengine.ProxyField; import nz.co.senanque.validationengine.ValidationEngine; import nz.co.senanque.validationengine.ValidationObject; import nz.co.senanque.validationengine.ValidationSession; import org.junit.Test; import org.junit.runner.RunWith; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = { "spring.xml" }) public class DirectedRulesTest { private static final Logger log = LoggerFactory.getLogger(DirectedRulesTest.class); @Autowired private transient ValidationEngine m_validationEngine; @Autowired private transient RulesPlugin m_rulesPlugin; /** * Runs a scenario which tries directed questioning, then resets the values * and runs it again, verifying that the same questions are asked. * @throws Exception */ @Test public void testDirectedQuestion1() throws Exception { ValidationSession validationSession = m_validationEngine.createSession(); Customer customer = new Customer(); validationSession.bind(customer); List<FieldMetadata> log1 = tryScenario(customer); m_rulesPlugin.clearUnknowns(customer); for (FieldMetadata fieldMetadata : log1) { dumpObject(customer); FieldMetadata fm = m_rulesPlugin.getEmptyField(customer.getMetadata().getFieldMetadata("bmi")); String currentName = (fm == null) ? "null" : fm.getName(); log.debug("{} {}", fieldMetadata.getName(), currentName); // this proves we ask the same questions the second time around. assertEquals(fieldMetadata.getName(), currentName); if (fieldMetadata.getName().equals("heightInches")) { fieldMetadata.setValue(new Double(4)); dumpObject(customer); continue; } if (fieldMetadata.getName().equals("heightMetric")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } if (fieldMetadata.getName().equals("heightFeet")) { fieldMetadata.setValue(new Double(5)); continue; } if (fieldMetadata.getName().equals("weightKilos")) { dumpObject(customer); log.debug("Just before set value"); fieldMetadata.setValue(new Double(90D)); log.debug("Just after set value"); dumpObject(customer); log.debug("complete: field=weightKilos"); continue; } } long bmi = new Double(customer.getBmi()).longValue(); assertEquals(34L, bmi); validationSession.close(); } @Test public void testDirectedQuestion2() throws Exception { ValidationSession validationSession = m_validationEngine.createSession(); Customer customer = new Customer(); validationSession.bind(customer); m_rulesPlugin.clearUnknowns(customer); FieldMetadata fieldMetadata = null; while ((fieldMetadata = m_rulesPlugin .getEmptyField(customer.getMetadata().getFieldMetadata("bmi"))) != null) { log.debug("found field {}", fieldMetadata.getName()); if (fieldMetadata.getName().equals("weightKilos")) { fieldMetadata.setValue(new Double(90D)); continue; } if (fieldMetadata.getName().equals("heightMetric")) { fieldMetadata.setValue(new Double(1.92D)); continue; } if (fieldMetadata.getName().equals("weightPounds")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } if (fieldMetadata.getName().equals("heightFeet")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } if (fieldMetadata.getName().equals("heightInches")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } } long bmi = new Double(customer.getBmi()).longValue(); assertEquals(24L, bmi); validationSession.close(); } private void dumpObject(ValidationObject object) { ObjectMetadata objectMetadata = object.getMetadata(); ValidationSession session = object.getMetadata().getProxyObject().getSession(); Map<String, ProxyField> fieldMap = objectMetadata.getProxyObject().getFieldMap(); log.debug("Dumping object {}", object.getClass().getName()); for (Map.Entry<String, ProxyField> entry : fieldMap.entrySet()) { FieldMetadata fieldMetadata = entry.getValue().getFieldMetadata(); ProxyField proxyField = session.getProxyField(fieldMetadata); if (proxyField.getPropertyMetadata().isUnknown()) { log.debug("field {} value {} {} unknown:{} derived:{} notknown:{}", new Object[] { proxyField.getFieldName(), proxyField.fetchValue(), proxyField.getValue(), proxyField.isUnknown(), proxyField.isNotKnown(), proxyField.isDerived() }); } } } private List<FieldMetadata> tryScenario(Customer customer) { List<FieldMetadata> metadataLog = new ArrayList<FieldMetadata>(); FieldMetadata fieldMetadata = null; while ((fieldMetadata = m_rulesPlugin .getEmptyField(customer.getMetadata().getFieldMetadata("bmi"))) != null) { log.debug("found field {}", fieldMetadata.getName()); metadataLog.add(fieldMetadata); if (fieldMetadata.getName().equals("weightKilos")) { fieldMetadata.setValue(new Double(90D)); continue; } if (fieldMetadata.getName().equals("heightMetric")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } if (fieldMetadata.getName().equals("weightPounds")) { m_rulesPlugin.setNotKnown(fieldMetadata); continue; } if (fieldMetadata.getName().equals("heightFeet")) { fieldMetadata.setValue(new Double(6)); continue; } if (fieldMetadata.getName().equals("heightInches")) { fieldMetadata.setValue(new Double(4)); continue; } } long bmi = new Double(customer.getBmi()).longValue(); assertEquals(24L, bmi); return metadataLog; } }