54 lines
1.7 KiB
Java
54 lines
1.7 KiB
Java
package com.baeldung;
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import com.mongodb.BasicDBObject;
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import com.mongodb.DB;
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import com.mongodb.DBCollection;
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import com.mongodb.DBCursor;
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import com.mongodb.MongoClient;
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public class MongoExample {
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public static void main(String[] args) {
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MongoClient mongoClient = new MongoClient("localhost", 27017);
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DB database = mongoClient.getDB("myMongoDb");
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// print existing databases
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mongoClient.getDatabaseNames().forEach(System.out::println);
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database.createCollection("customers", null);
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// print all collections in customers database
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database.getCollectionNames().forEach(System.out::println);
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// create data
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DBCollection collection = database.getCollection("customers");
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BasicDBObject document = new BasicDBObject();
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document.put("name", "Shubham");
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document.put("company", "Baeldung");
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collection.insert(document);
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// update data
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BasicDBObject query = new BasicDBObject();
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query.put("name", "Shubham");
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BasicDBObject newDocument = new BasicDBObject();
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newDocument.put("name", "John");
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BasicDBObject updateObject = new BasicDBObject();
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updateObject.put("$set", newDocument);
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collection.update(query, updateObject);
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// read data
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BasicDBObject searchQuery = new BasicDBObject();
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searchQuery.put("name", "John");
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DBCursor cursor = collection.find(searchQuery);
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while (cursor.hasNext()) {
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System.out.println(cursor.next());
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}
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// delete data
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BasicDBObject deleteQuery = new BasicDBObject();
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deleteQuery.put("name", "John");
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collection.remove(deleteQuery);
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}
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}
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