diff --git a/persistence-modules/java-mongodb/README.md b/persistence-modules/java-mongodb/README.md index a8539e644f..5c3c448b03 100644 --- a/persistence-modules/java-mongodb/README.md +++ b/persistence-modules/java-mongodb/README.md @@ -10,3 +10,4 @@ This module contains articles about MongoDB in Java. - [Geospatial Support in MongoDB](https://www.baeldung.com/mongodb-geospatial-support) - [Introduction to Morphia – Java ODM for MongoDB](https://www.baeldung.com/mongodb-morphia) - [MongoDB Aggregations Using Java](https://www.baeldung.com/java-mongodb-aggregations) +- [MongoDB BSON to JSON](https://www.baeldung.com/bson-to-json) diff --git a/persistence-modules/java-mongodb/src/main/java/com/baeldung/morphia/domain/Book.java b/persistence-modules/java-mongodb/src/main/java/com/baeldung/morphia/domain/Book.java index 172c916ad9..4ed2ab8580 100644 --- a/persistence-modules/java-mongodb/src/main/java/com/baeldung/morphia/domain/Book.java +++ b/persistence-modules/java-mongodb/src/main/java/com/baeldung/morphia/domain/Book.java @@ -1,5 +1,7 @@ package com.baeldung.morphia.domain; +import java.time.LocalDate; +import java.time.LocalDateTime; import java.util.HashSet; import java.util.Set; @@ -29,28 +31,13 @@ public class Book { private double cost; @Reference private Set companionBooks; + @Property + private LocalDateTime publishDate; public Book() { } - public String getTitle() { - return title; - } - - public String getAuthor() { - return author; - } - - public double getCost() { - return cost; - } - - public void addCompanionBooks(Book book) { - if (companionBooks != null) - this.companionBooks.add(book); - } - public Book(String isbn, String title, String author, double cost, Publisher publisher) { this.isbn = isbn; this.title = title; @@ -60,6 +47,71 @@ public class Book { this.companionBooks = new HashSet<>(); } + // Getters and setters ... + public String getIsbn() { + return isbn; + } + + public Book setIsbn(String isbn) { + this.isbn = isbn; + return this; + } + + public String getTitle() { + return title; + } + + public Book setTitle(String title) { + this.title = title; + return this; + } + + public String getAuthor() { + return author; + } + + public Book setAuthor(String author) { + this.author = author; + return this; + } + + public Publisher getPublisher() { + return publisher; + } + + public Book setPublisher(Publisher publisher) { + this.publisher = publisher; + return this; + } + + public double getCost() { + return cost; + } + + public Book setCost(double cost) { + this.cost = cost; + return this; + } + + public LocalDateTime getPublishDate() { + return publishDate; + } + + public Book setPublishDate(LocalDateTime publishDate) { + this.publishDate = publishDate; + return this; + } + + public Set getCompanionBooks() { + return companionBooks; + } + + public Book addCompanionBooks(Book book) { + if (companionBooks != null) + this.companionBooks.add(book); + return this; + } + @Override public String toString() { return "Book [isbn=" + isbn + ", title=" + title + ", author=" + author + ", publisher=" + publisher + ", cost=" + cost + "]"; @@ -113,4 +165,4 @@ public class Book { return true; } -} \ No newline at end of file +} diff --git a/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/BsonToJsonIntegrationTest.java b/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/BsonToJsonIntegrationTest.java new file mode 100644 index 0000000000..e382ea4ab2 --- /dev/null +++ b/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/BsonToJsonIntegrationTest.java @@ -0,0 +1,142 @@ +package com.baeldung.bsontojson; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertTrue; + +import java.sql.Timestamp; +import java.time.Instant; +import java.time.LocalDateTime; +import java.time.format.DateTimeFormatter; +import java.util.Date; +import java.util.TimeZone; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import org.bson.Document; +import org.bson.json.Converter; +import org.bson.json.JsonMode; +import org.bson.json.JsonWriterSettings; +import org.bson.json.StrictJsonWriter; +import org.bson.types.ObjectId; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.Test; +import org.junit.jupiter.api.AfterEach; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.baeldung.morphia.domain.Book; +import com.baeldung.morphia.domain.Publisher; +import com.mongodb.MongoClient; +import com.mongodb.client.MongoDatabase; + +import dev.morphia.Datastore; +import dev.morphia.Morphia; + +public class BsonToJsonIntegrationTest { + + private static final String DB_NAME = "library"; + private static Datastore datastore; + + @BeforeClass + public static void setUp() { + Morphia morphia = new Morphia(); + morphia.mapPackage("com.baeldung.morphia"); + datastore = morphia.createDatastore(new MongoClient(), DB_NAME); + datastore.ensureIndexes(); + + datastore.save(new Book() + .setIsbn("isbn") + .setTitle("title") + .setAuthor("author") + .setCost(3.95) + .setPublisher(new Publisher(new ObjectId("fffffffffffffffffffffffa"),"publisher")) + .setPublishDate(LocalDateTime.parse("2020-01-01T18:13:32Z", DateTimeFormatter.ISO_DATE_TIME)) + .addCompanionBooks(new Book().setIsbn("isbn2"))); + } + + @AfterClass + public static void tearDown() { + datastore.delete(datastore.createQuery(Book.class)); + } + + @Test + public void givenBsonDocument_whenUsingStandardJsonTransformation_thenJsonDateIsObjectEpochTime() { + + String json = null; + try (MongoClient mongoClient = new MongoClient()) { + MongoDatabase mongoDatabase = mongoClient.getDatabase(DB_NAME); + Document bson = mongoDatabase.getCollection("Books").find().first(); + json = bson.toJson(); + } + + String expectedJson = "{\"_id\": \"isbn\", " + + "\"className\": \"com.baeldung.morphia.domain.Book\", " + + "\"title\": \"title\", " + + "\"author\": \"author\", " + + "\"publisher\": {\"_id\": {\"$oid\": \"fffffffffffffffffffffffa\"}, " + + "\"name\": \"publisher\"}, " + + "\"price\": 3.95, " + + "\"publishDate\": {\"$date\": 1577898812000}}"; + + assertNotNull(json); + + assertEquals(expectedJson, json); + } + + + @Test + public void givenBsonDocument_whenUsingRelaxedJsonTransformation_thenJsonDateIsObjectIsoDate() { + + String json = null; + try (MongoClient mongoClient = new MongoClient()) { + MongoDatabase mongoDatabase = mongoClient.getDatabase(DB_NAME); + Document bson = mongoDatabase.getCollection("Books").find().first(); + json = bson.toJson(JsonWriterSettings + .builder() + .outputMode(JsonMode.RELAXED) + .build()); + } + + String expectedJson = "{\"_id\": \"isbn\", " + + "\"className\": \"com.baeldung.morphia.domain.Book\", " + + "\"title\": \"title\", " + + "\"author\": \"author\", " + + "\"publisher\": {\"_id\": {\"$oid\": \"fffffffffffffffffffffffa\"}, " + + "\"name\": \"publisher\"}, " + + "\"price\": 3.95, " + + "\"publishDate\": {\"$date\": \"2020-01-01T17:13:32Z\"}}"; + + assertNotNull(json); + + assertEquals(expectedJson, json); + } + + @Test + public void givenBsonDocument_whenUsingCustomJsonTransformation_thenJsonDateIsStringField() { + + String json = null; + try (MongoClient mongoClient = new MongoClient()) { + MongoDatabase mongoDatabase = mongoClient.getDatabase(DB_NAME); + Document bson = mongoDatabase.getCollection("Books").find().first(); + json = bson.toJson(JsonWriterSettings + .builder() + .dateTimeConverter(new JsonDateTimeConverter()) + .build()); + } + + String expectedJson = "{\"_id\": \"isbn\", " + + "\"className\": \"com.baeldung.morphia.domain.Book\", " + + "\"title\": \"title\", " + + "\"author\": \"author\", " + + "\"publisher\": {\"_id\": {\"$oid\": \"fffffffffffffffffffffffa\"}, " + + "\"name\": \"publisher\"}, " + + "\"price\": 3.95, " + + "\"publishDate\": \"2020-01-01T17:13:32Z\"}"; + + assertEquals(expectedJson, json); + + } + +} diff --git a/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/JsonDateTimeConverter.java b/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/JsonDateTimeConverter.java new file mode 100644 index 0000000000..46023e363f --- /dev/null +++ b/persistence-modules/java-mongodb/src/test/java/com/baeldung/bsontojson/JsonDateTimeConverter.java @@ -0,0 +1,30 @@ +package com.baeldung.bsontojson; + +import java.time.Instant; +import java.time.ZoneId; +import java.time.format.DateTimeFormatter; +import java.util.Date; +import java.util.TimeZone; + +import org.bson.json.Converter; +import org.bson.json.StrictJsonWriter; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class JsonDateTimeConverter implements Converter { + + private static final Logger LOGGER = LoggerFactory.getLogger(JsonDateTimeConverter.class); + static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ISO_INSTANT + .withZone(ZoneId.of("UTC")); + + @Override + public void convert(Long value, StrictJsonWriter writer) { + try { + Instant instant = new Date(value).toInstant(); + String s = DATE_TIME_FORMATTER.format(instant); + writer.writeString(s); + } catch (Exception e) { + LOGGER.error(String.format("Fail to convert offset %d to JSON date", value), e); + } + } +}