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[BAEL-2732] Adding in BSON examples from article

This commit is contained in:
Michael Pratt 2019-04-24 13:49:04 +00:00
parent 970a94bc76
commit a89a07db5f
2 changed files with 81 additions and 2 deletions
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2
persistence-modules/java-mongodb/pom.xml
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@ -35,7 +35,7 @@
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<mongo.version>3.4.1</mongo.version>
<mongo.version>3.10.1</mongo.version>
<flapdoodle.version>1.11</flapdoodle.version>
</properties>

79
persistence-modules/java-mongodb/src/main/java/com/baeldung/MongoBsonExample.java Normal file
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@ -0,0 +1,79 @@
package com.baeldung;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class MongoBsonExample
{
public static void main(String[] args)
{
//
// 4.1 Connect to cluster (default is localhost:27017)
//
MongoClient mongoClient = MongoClients.create();
MongoDatabase database = mongoClient.getDatabase("myDB");
MongoCollection<Document> collection = database.getCollection("employees");
//
// 4.2 Insert new document
//
Document employee = new Document()
.append("first_name", "Joe")
.append("last_name", "Smith")
.append("title", "Java Developer")
.append("years_of_service", 3)
.append("skills", Arrays.asList("java", "spring", "mongodb"))
.append("manager", new Document()
.append("first_name", "Sally")
.append("last_name", "Johanson"));
collection.insertOne(employee);
//
// 4.3 Find documents
//
Document query = new Document("last_name", "Smith");
List results = new ArrayList<>();
collection.find(query).into(results);
query =
new Document("$or", Arrays.asList(
new Document("last_name", "Smith"),
new Document("first_name", "Joe")));
results = new ArrayList<>();
collection.find(query).into(results);
//
// 4.4 Update document
//
query = new Document(
"skills",
new Document(
"$elemMatch",
new Document("$eq", "spring")));
Document update = new Document(
"$push",
new Document("skills", "security"));
collection.updateMany(query, update);
//
// 4.5 Delete documents
//
query = new Document(
"years_of_service",
new Document("$lt", 0));
collection.deleteMany(query);
}
}