BAEL-1962 Convert ZonedDateTime for MongoDB interactions (#5640)

persistence-modules/spring-data-mongodb/pom.xml

@@ -109,7 +109,7 @@
     </build>
 
     <properties>
-        <org.springframework.data.version>2.1.0.RELEASE</org.springframework.data.version>
+        <org.springframework.data.version>2.1.2.RELEASE</org.springframework.data.version>
         <querydsl.version>4.1.4</querydsl.version>
         <mysema.maven.version>1.1.3</mysema.maven.version>
         <spring.version>5.1.0.RELEASE</spring.version>

persistence-modules/spring-data-mongodb/src/main/java/com/baeldung/config/MongoConfig.java

@@ -3,6 +3,8 @@ package com.baeldung.config;
 import java.util.ArrayList;
 import java.util.List;
 
+import converter.ZonedDateTimeReadConverter;
+import converter.ZonedDateTimeWriteConverter;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.convert.converter.Converter;
@@ -52,6 +54,8 @@ public class MongoConfig extends AbstractMongoConfiguration {
     @Override
     public MongoCustomConversions customConversions() {
         converters.add(new UserWriterConverter());
+        converters.add(new ZonedDateTimeReadConverter());
+        converters.add(new ZonedDateTimeWriteConverter());
         return new MongoCustomConversions(converters);
     }
 
@@ -64,5 +68,5 @@ public class MongoConfig extends AbstractMongoConfiguration {
     MongoTransactionManager transactionManager(MongoDbFactory dbFactory) {
             return new MongoTransactionManager(dbFactory);
     }
-    
+
 }

persistence-modules/spring-data-mongodb/src/main/java/com/baeldung/model/Action.java

@@ -0,0 +1,51 @@
+package com.baeldung.model;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+import java.time.ZonedDateTime;
+
+@Document
+public class Action {
+
+    @Id
+    private String id;
+
+    private String description;
+    private ZonedDateTime time;
+
+    public Action(String id, String description, ZonedDateTime time) {
+        this.id = id;
+        this.description = description;
+        this.time = time;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public ZonedDateTime getTime() {
+        return time;
+    }
+
+    public void setTime(ZonedDateTime time) {
+        this.time = time;
+    }
+
+    @Override
+    public String toString() {
+        return "Action{id='" + id + "', description='" + description + "', time=" + time + '}';
+    }
+}

persistence-modules/spring-data-mongodb/src/main/java/com/baeldung/repository/ActionRepository.java

@@ -0,0 +1,6 @@
+package com.baeldung.repository;
+
+import com.baeldung.model.Action;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface ActionRepository extends MongoRepository<Action, String> { }

persistence-modules/spring-data-mongodb/src/main/java/converter/ZonedDateTimeReadConverter.java

@@ -0,0 +1,14 @@
+package converter;
+
+import org.springframework.core.convert.converter.Converter;
+
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.util.Date;
+
+public class ZonedDateTimeReadConverter implements Converter<Date, ZonedDateTime> {
+    @Override
+    public ZonedDateTime convert(Date date) {
+        return date.toInstant().atZone(ZoneOffset.UTC);
+    }
+}

persistence-modules/spring-data-mongodb/src/main/java/converter/ZonedDateTimeWriteConverter.java

@@ -0,0 +1,13 @@
+package converter;
+
+import org.springframework.core.convert.converter.Converter;
+
+import java.time.ZonedDateTime;
+import java.util.Date;
+
+public class ZonedDateTimeWriteConverter implements Converter<ZonedDateTime, Date> {
+    @Override
+    public Date convert(ZonedDateTime zonedDateTime) {
+        return Date.from(zonedDateTime.toInstant());
+    }
+}

persistence-modules/spring-data-mongodb/src/test/java/com/baeldung/repository/ActionRepositoryLiveTest.java

@@ -0,0 +1,50 @@
+package com.baeldung.repository;
+
+import com.baeldung.config.MongoConfig;
+import com.baeldung.model.Action;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.mongodb.core.MongoOperations;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = MongoConfig.class)
+public class ActionRepositoryLiveTest {
+
+    @Autowired
+    private MongoOperations mongoOps;
+
+    @Autowired
+    private ActionRepository actionRepository;
+
+    @Before
+    public void setup() {
+        if (!mongoOps.collectionExists(Action.class)) {
+            mongoOps.createCollection(Action.class);
+        }
+    }
+
+    @Test
+    public void givenSavedAction_TimeIsRetrievedCorrectly() {
+        String id = "testId";
+        ZonedDateTime now = ZonedDateTime.now(ZoneOffset.UTC);
+
+        actionRepository.save(new Action(id, "click-action", now));
+        Action savedAction = actionRepository.findById(id).get();
+
+        Assert.assertEquals(now.withNano(0), savedAction.getTime().withNano(0));
+    }
+
+    @After
+    public void tearDown() {
+        mongoOps.dropCollection(Action.class);
+    }
+}