I am not sure it is possible what I want to do. I try to improve my generic code to reduce number of parameters because theoratically only one information is needed.
Currently I have a constructor like:
protected _AbstractDataOnDemand(
final Class<T> entityClass,
final CrudService<T> service,
final ApplicationRepository<T> repository,
final JPAPersistableDODPopulationUtilizable<T> dodPopulation
){
this.entityClass = entityClass;
this.service = service;
this.repository = repository;
this.dodPopulation = dodPopulation;
}
As you can see it could be enough to give entityClass as information and create instances of service, repository, dodPopulation with that information.
I would like to do something:
protected _AbstractDataOnDemand(
final Class<T> entityClass,
){
this.entityClass = entityClass;
this.service = createCrudService(entityClass);
this.repository = createRepository(entityClass);
this.dodPopulation = createDodPopulation(entityClass);
}
Is this possible?
Related
Given siutation like this, author click publish (activate) a page
Then I have following listener to handleEvent
public class ArticleContentActivationEventHandler implements EventHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(ArticleContentActivationEventHandler.class);
private static final String ARTICLE_PAGE_TEMPLATE = "/conf/myproject/settings/wcm/templates/article-template";
#Reference
private ResourceResolverService resourceResolverService;
#Override
public void handleEvent(Event event) {
ResourceResolver resourceResolver = null;
try {
resourceResolver = resourceResolverService.getServiceResourceResolver();
String resourcePath = getResourcePath(event);
Resource resource = resourceResolver.getResource(resourcePath);
//the resource is null, the resource path is /content/myproject/us/en,
//resourceResolver is not able to resolve it somehow
for (Iterator<Resource> it = resourceResolver.getResource("/content/myproject/us/en").getChildren().iterator(); it.hasNext(); ) {
Resource r = it.next();
String s = r.getPath();
String t = r.getResourceType();
}
if (resource.isResourceType("cq:Page")) {
Resource jcr_content = resource.getChild("jcr:content");
ValueMap vm = jcr_content.getValueMap();
String template = null;
if (vm.containsKey("cq:template")) {
template = PropertiesUtil.toString(vm.get("cq:template"), "");
}
and below is the interface:
public interface ResourceResolverService {
ResourceResolver getServiceResourceResolver() throws LoginException;
void closeResourceResolver(ResourceResolver resourceResolver);
}
and the impl class:
#Component(service = ResourceResolverService.class, immediate = true)
public class ResourceResolverServiceImpl implements ResourceResolverService {
#Reference
private ResourceResolverFactory resourceResolverFactory;
Logger logger = LoggerFactory.getLogger(ResourceResolverServiceImpl.class);
#Activate
protected void activate() {
logger.info("*** Activating Service ResourceResolverServiceImpl");
}
#Override
public ResourceResolver getServiceResourceResolver() throws LoginException {
final Map<String, Object> param = Collections.singletonMap(ResourceResolverFactory.SUBSERVICE, (Object) "getResourceResolver");
//the ResourceResolver returned here may got some issue?
return resourceResolverFactory.getServiceResourceResolver(param);
}
#Override
public void closeResourceResolver(ResourceResolver resourceResolver) {
resourceResolver.close();
}
}
I do have the osgi config setup by following tutorial http://www.aemcq5tutorials.com/tutorials/resourceresolver-from-resourceresolverfactory/
But in my actually even handler class, it never successfully resolved resource resourceResolver is not able to resolve /content/myproject/us/en , resourceResolver keep give me null value
Could anyone experienced this suggest me some code sample to resolve my issue? thanks
Check the User mapping configuration, the bundle id used in the configuration should match to your project core artifact id.
For example: in the configuration
bundleId = com.day.cq.wcm.cq-msm-core
Alternatively you can try below code instead
Map<String, Object> param = new HashMap<String, Object>();
param.put(ResourceResolverFactory.SUBSERVICE, "service-user");
ResourceResolver resolver = resourceResolverFactory.getServiceResourceResolver(param);
I am trying out to write data to my local Elasticsearch Docker Container (7.4.2), for simplicity I used the AbstractReactiveElasticsearchConfiguration given from Spring also Overriding the entityMapper function. The I constructed my repository extending the ReactiveElasticsearchRepository
Then in the end I used my autowired repository to saveAll() my collection of elements containing the data. However Elasticsearch doesn't write any data. Also i have a REST controller which is starting my whole process returning nothing basicly, DeferredResult>
The REST method coming from my ApiDelegateImpl
#Override
public DeferredResult<ResponseEntity<Void>> openUsageExporterStartPost() {
final DeferredResult<ResponseEntity<Void>> deferredResult = new DeferredResult<>();
ForkJoinPool.commonPool().execute(() -> {
try {
openUsageExporterAdapter.startExport();
deferredResult.setResult(ResponseEntity.accepted().build());
} catch (Exception e) {
deferredResult.setErrorResult(e);
}
}
);
return deferredResult;
}
My Elasticsearch Configuration
#Configuration
public class ElasticSearchConfig extends AbstractReactiveElasticsearchConfiguration {
#Value("${spring.data.elasticsearch.client.reactive.endpoints}")
private String elasticSearchEndpoint;
#Bean
#Override
public EntityMapper entityMapper() {
final ElasticsearchEntityMapper entityMapper = new ElasticsearchEntityMapper(elasticsearchMappingContext(), new DefaultConversionService());
entityMapper.setConversions(elasticsearchCustomConversions());
return entityMapper;
}
#Override
public ReactiveElasticsearchClient reactiveElasticsearchClient() {
ClientConfiguration clientConfiguration = ClientConfiguration.builder()
.connectedTo(elasticSearchEndpoint)
.build();
return ReactiveRestClients.create(clientConfiguration);
}
}
My Repository
public interface OpenUsageRepository extends ReactiveElasticsearchRepository<OpenUsage, Long> {
}
My DTO
#Data
#Document(indexName = "open_usages", type = "open_usages")
#TypeAlias("OpenUsage")
public class OpenUsage {
#Field(name = "id")
#Id
private Long id;
......
}
My Adapter Implementation
#Autowired
private final OpenUsageRepository openUsageRepository;
...transform entity into OpenUsage...
public void doSomething(final List<OpenUsage> openUsages){
openUsageRepository.saveAll(openUsages)
}
And finally my IT test
#SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
#Testcontainers
#TestPropertySource(locations = {"classpath:application-it.properties"})
#ContextConfiguration(initializers = OpenUsageExporterApplicationIT.Initializer.class)
class OpenUsageExporterApplicationIT {
#LocalServerPort
private int port;
private final static String STARTCALL = "http://localhost:%s/open-usage-exporter/start/";
#Container
private static ElasticsearchContainer container = new ElasticsearchContainer("docker.elastic.co/elasticsearch/elasticsearch:6.8.4").withExposedPorts(9200);
static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
#Override
public void initialize(final ConfigurableApplicationContext configurableApplicationContext) {
final List<String> pairs = new ArrayList<>();
pairs.add("spring.data.elasticsearch.client.reactive.endpoints=" + container.getContainerIpAddress() + ":" + container.getFirstMappedPort());
pairs.add("spring.elasticsearch.rest.uris=http://" + container.getContainerIpAddress() + ":" + container.getFirstMappedPort());
TestPropertyValues.of(pairs).applyTo(configurableApplicationContext);
}
}
#Test
void testExportToES() throws IOException, InterruptedException {
final List<OpenUsageEntity> openUsageEntities = dbPreparator.insertTestData();
assertTrue(openUsageEntities.size() > 0);
final String result = executeRestCall(STARTCALL);
// Awaitility here tells me nothing is in ElasticSearch :(
}
private String executeRestCall(final String urlTemplate) throws IOException {
final String url = String.format(urlTemplate, port);
final HttpUriRequest request = new HttpPost(url);
final HttpResponse response = HttpClientBuilder.create().build().execute(request);
// Get the result.
return EntityUtils.toString(response.getEntity());
}
}
public void doSomething(final List<OpenUsage> openUsages){
openUsageRepository.saveAll(openUsages)
}
This lacks a semicolon at the end, so it should not compile.
But I assume this is just a typo, and there is a semicolon in reality.
Anyway, saveAll() returns a Flux. This Flux is just a recipe for saving your data, and it is not 'executed' until subscribe() is called by someone (or something like blockLast()). You just throw that Flux away, so the saving never gets executed.
How to fix this? One option is to add .blockLast() call:
openUsageRepository.saveAll(openUsages).blockLast();
But this will save the data in a blocking way effectively defeating the reactivity.
Another option is, if the code you are calling saveAll() from supports reactivity is just to return the Flux returned by saveAll(), but, as your doSomething() has void return type, this is doubtful.
It is not seen how your startExport() connects to doSomething() anyway. But it looks like your 'calling code' does not use any notion of reactivity, so a real solution would be to either rewrite the calling code to use reactivity (obtain a Publisher and subscribe() on it, then wait till the data arrives), or revert to using blocking API (ElasticsearchRepository instead of ReactiveElasticsearchRepository).
I followed the blog & I was able to perform create, read & update operations on my custom OData service, but I am unable to find any blog/document for delete operation.
Please help.
There is no dedicated blog post for executing delete operations on custom OData Services but we would advise you to follow this pattern:
public class DeleteAddressCommand extends ErpCommand<Integer> {
private static final Logger logger = CloudLoggerFactory.getLogger(DeleteAddressCommand.class);
private final BusinessPartnerService service;
private final String businessPartnerId;
private final String addressId;
public DeleteAddressCommand(final BusinessPartnerService service,
final String businessPartnerId, final String addressId) {
super(HystrixUtil.getDefaultErpCommandSetter(
DeleteAddressCommand.class,
HystrixUtil.getDefaultErpCommandProperties().withExecutionTimeoutInMilliseconds(10000)));
this.service = service;
this.businessPartnerId = businessPartnerId;
this.addressId = addressId;
}
#Override
protected Integer run() throws Exception {
final BusinessPartnerAddress addressToDelete = BusinessPartnerAddress.builder()
.businessPartner(businessPartnerId)
.addressID(addressId)
.build();
final ODataDeleteResult oDataDeleteResult = service
.deleteBusinessPartnerAddress(addressToDelete)
.execute();
return oDataDeleteResult.getHttpStatusCode();
}
}
I pasted the code from this official example
Best wishes
Florian
I'm trying to test if #Async annotation of Spring is working as expected on my project. But It doesn't.
I have this test:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(classes = GlobalConfiguration.class)
public class ActivityMessageListenerTest {
#Autowired
private ActivityMessageListener activityMessageListener;
private Long USER_ID = 1l;
private Long COMPANY_ID = 2l;
private Date DATE = new Date(10000000);
private String CLASSNAME = "className";
private Long CLASSPK = 14l;
private Integer TYPE = 22;
private String EXTRA_DATA = "extra";
private Long RECIVED_USER_ID = 99l;
#Before
public void setup() throws Exception {
}
#Test
public void testDoReceiveWithException() throws Exception {
System.out.println("Current thread " + Thread.currentThread().getName());
Map<String, Object> values = new HashMap();
values.put(ActivityMessageListener.PARAM_USER_ID, USER_ID);
values.put(ActivityMessageListener.PARAM_COMPANY_ID, COMPANY_ID);
values.put(ActivityMessageListener.PARAM_CREATE_DATE, DATE);
values.put(ActivityMessageListener.PARAM_CLASS_NAME, CLASSNAME);
values.put(ActivityMessageListener.PARAM_CLASS_PK, CLASSPK);
values.put(ActivityMessageListener.PARAM_TYPE, TYPE);
values.put(ActivityMessageListener.PARAM_EXTRA_DATA, EXTRA_DATA );
values.put(ActivityMessageListener.PARAM_RECEIVED_USER_ID, RECIVED_USER_ID);
Message message = new Message();
message.setValues(values);
MessageBusUtil.sendMessage(MKTDestinationNames.ACTIVITY_REGISTRY, message);
}
}
As you can see I'm printing the name of the current thread.
The class containing the #Async method is:
public class ActivityMessageListener extends BaseMessageListener {
public static final String PARAM_USER_ID = "userId";
public static final String PARAM_COMPANY_ID = "companyId";
public static final String PARAM_CREATE_DATE = "createDate";
public static final String PARAM_CLASS_NAME = "className";
public static final String PARAM_CLASS_PK = "classPK";
public static final String PARAM_TYPE = "type";
public static final String PARAM_EXTRA_DATA = "extraData";
public static final String PARAM_RECEIVED_USER_ID = "receiverUserId";
public ActivityMessageListener() {
MessageBusUtil.addQueue(MKTDestinationNames.ACTIVITY_REGISTRY, this);
}
#Override
#Async(value = "activityExecutor")
public void doReceive(Message message) throws Exception {
System.out.println("Current " + Thread.currentThread().getName());
if (1> 0)
throw new RuntimeException("lalal");
Map<String, Object> parameters = message.getValues();
Long userId = (Long)parameters.get(ActivityMessageListener.PARAM_USER_ID);
Long companyId = (Long)parameters.get(ActivityMessageListener.PARAM_COMPANY_ID);
Date createDate = (Date)parameters.get(ActivityMessageListener.PARAM_CREATE_DATE);
String className = (String)parameters.get(ActivityMessageListener.PARAM_CLASS_NAME);
Long classPK = (Long)parameters.get(ActivityMessageListener.PARAM_CLASS_PK);
Integer type = (Integer)parameters.get(ActivityMessageListener.PARAM_TYPE);
String extraData = (String)parameters.get(ActivityMessageListener.PARAM_EXTRA_DATA);
Long receiverUserId = (Long)parameters.get(ActivityMessageListener.PARAM_RECEIVED_USER_ID);
ActivityLocalServiceUtil.addActivity(userId, companyId, createDate, className, classPK, type, extraData, receiverUserId);
}
}
Here I'm printing the name of the current thread inside of the #Async method, and the name is the same as before, main. So it's not working.
The GlobalConfiguration is:
#Configuration
#EnableAspectJAutoProxy
#EnableTransactionManagement
#ComponentScan({
"com.shn.configurations",
...some packages...
})
public class GlobalConfiguration {...}
And inside one of the specified packages has the activityExecutor bean:
#Configuration
#EnableAsync(proxyTargetClass = true)
public class ExecutorConfiguration {
#Bean
public ActivityMessageListener activityMessageListener() {
return new ActivityMessageListener();
}
#Bean
public TaskExecutor activityExecutor()
{
ThreadPoolTaskExecutor threadPoolTaskExecutor =
new ThreadPoolTaskExecutor();
threadPoolTaskExecutor.setCorePoolSize(10);
threadPoolTaskExecutor.setMaxPoolSize(10);
threadPoolTaskExecutor.setQueueCapacity(100);
return threadPoolTaskExecutor;
}
}
What I'm doing wrong?
Tricky.
Asynchronous behavior is added through proxying.
Spring provides you with a proxy that wraps the actual object and performs the actual invocation in a separate thread.
It looks something like this (except most of this is done dynamically with CGLIB or JDK proxies and Spring handlers)
class ProxyListener extends ActivityMessageListener {
private ActivityMessageListener real;
public ProxyListener(ActivityMessageListener real) {
this.real = real;
}
TaskExecutor executor; // injected
#Override
public void doReceive(Message message) throws Exception {
executor.submit(() -> real.doReceive(message)); // in another thread
}
}
ActivityMessageListener real = new ActivityMessageListener();
ProxyListener proxy = new ProxyListener(real);
Now, in a Spring world, you'd have a reference to the proxy object, not to the ActivityMessageListener. That is
ActivityMessageListener proxy = applicationContext.getBean(ActivityMessageListener.class);
would return a reference to the ProxyListener. Then, through polymorphism, invoking doReceive would go to the overriden Proxy#doReceive method which would invoke ActivityMessageListener#doReceive through delegation and you'd get your asynchronous behavior.
However, you're in a half Spring world.
Here
public ActivityMessageListener() {
MessageBusUtil.addQueue(MKTDestinationNames.ACTIVITY_REGISTRY, this);
}
the reference this is actually referring to the real ActivityMessageListener, not to the proxy. So when, presumably, you send your message on the bus here
MessageBusUtil.sendMessage(MKTDestinationNames.ACTIVITY_REGISTRY, message);
you're sending it to the real object, which doesn't have the proxy asynchronous behavior.
The full Spring solution would be to have the MessabeBus (and/or its queue) be Spring beans in which you can inject the fully process (proxied, autowired, initialized) beans.
In reality, since CGLIB proxies are really just subclasses of your types, so the ProxyListener above would actually also add itself to the bus since the super constructor would be invoked. It would seem though that only one MessageListener can register itself with a key, like MKTDestinationNames.ACTIVITY_REGISTRY. If this isn't the case, you'd have to show more of that code for explanation.
In your test, if you do
activityMessageListener.doReceive(message);
you should see that asynchronous behavior since activityMessageListener should hold a reference to the proxy.
I need to create an unmodifiable map generated from data obtained by querying a database. How, or can I, or is there a better way to do this using spring annotations?
I ran into a problem when creating a singleton for my Regions class and then trying to #Autowire in a RegionService to grab the object from the DAO. The problem is that spring can't instantiate the RegionService because it needs to instantiate the static singleton class Regions which needs to get data from the database as shown below in the constructor.
Please see me classes below (I've removed multiple unneeded methods that don't pertain to this question):
public final class Region {
private static final String DEFAULT_SEPERATOR = "-";
private final Integer key;
private final String description;
public Region(Integer pKey, String pDescription) {
this.key = pKey;
this.description = pDescription;
}
public Integer getKey() {
return this.key;
}
public String getValue() {
return this.description;
}
}
Here is my singleton:
public final class Regions {
private static Regions regionsInstance = null;
#Autowired
private RegionService regionService;
static Map<Integer, Region> regions;
private Regions() {
final Map<Integer, Region> tempRegions = new HashMap<Integer, Region>();
for (final Region region : this.regionService.retrieveAll()) {
tempRegions.put(region.getKey(), region);
}
regions = Collections.unmodifiableMap(tempRegions);
}
public static synchronized Regions getRegionsInstance() {
if (regionsInstance == null) {
regionsInstance = new Regions();
}
return regionsInstance;
}
public Region getRegion(final Integer pKey) {
return regions.get(pKey);
}
public List<Region> getRegions() {
return (List<Region>) regions.values();
}
}
My DAO and Service are just interfaces, no need to post those, here are my Impls:
#Service
public class RegionServiceImpl implements RegionService {
#Autowired
private RegionDAO regionDao;
#Override
public List<Region> retrieveAll() {
return this.regionDao.retrieveAll();
}
}
My DAOImpl (tested and works, just posting to give you the full picture):
#Repository
public class RegionDAOImpl implements RegionDAO {
private static final String SQL_RETRIEVE_REGIONS = "some random SQL";
#Autowired
private JdbcTemplate jdbcTemplate;
#Override
public List<Region> retrieveAll() {
try {
return this.jdbcTemplate.query(SQL_RETRIEVE_REGIONS, new ResultSetExtractor<List<Region>>() {
#Override
public List<Region> extractData(ResultSet rs) throws SQLException, DataAccessException {
return RegionDAOImpl.this.mapRegionData(rs);
}
});
} catch (final DataAccessException dae) {
throw new DaoException("Could not retrieve regionList from database. " + dae);
}
}
protected final List<Region> mapRegionData(ResultSet rs) throws SQLException {
final List<Region> regionList = new ArrayList<Region>();
while (rs.next()) {
regionList.add(new Region(rs.getInt("REGION_CD"), rs.getString("REGION_TXT")));
}
return Collections.unmodifiableList(regionList);
}
}
Then I run my test(I took out unneeded crap):
#..annotated with things you don't need to know
public class RetrieveRegionsTest {
#Autowired
private Regions r;
#Test
public void getAndLogRegion() {
final List<Region> regionDescriptions = new ArrayList<Region>(this.r.getRegions());
for (final Region region : regionDescriptions) {
LOGGER.info(region.getValue());
}
}
Yes my configuration and classpaths are set up properly. I can get this to work other ways, just not by accessing the Regions singleton which is what I want. Now I know I could take off the #Autowired on the RegionService in my Regions singleton and just create a new instance of RegionService, but that would defeat the purpose of springs #Autowired feature.
Any thoughts, ideas, comments?