Example usage for com.mongodb.client.model DeleteOneModel DeleteOneModel

Introduction

In this page you can find the example usage for com.mongodb.client.model DeleteOneModel DeleteOneModel.

Prototype

public DeleteOneModel(final Bson filter) 

Source Link

Document

Construct a new instance.

Usage

From source file:net.es.netshell.mongodb.MongoDBProvider.java

License:Open Source License

@Override
public final void delete(List<ResourceAnchor> anchors) throws IOException {
    if (!KernelThread.currentKernelThread().isPrivileged()) {
        throw new SecurityException("delete db list - not authorized");
    }/*from  ww w.  j  av a 2 s  . c o m*/
    HashMap<String, ArrayList<WriteModel>> collectionRequests = new HashMap<String, ArrayList<WriteModel>>();
    // Build the bulk requests per collection
    for (ResourceAnchor anchor : anchors) {
        String user = anchor.getContainerOwner();
        String collection = anchor.getContainerName();
        String collectionName = user + "_" + collection;
        ArrayList<WriteModel> requests;
        if (!collectionRequests.containsKey(collectionName)) {
            requests = new ArrayList<WriteModel>();
            collectionRequests.put(collectionName, requests);
        } else {
            requests = collectionRequests.get(collectionName);
        }
        Document query = new Document("resourceName", anchor.getResourceName());
        DeleteOneModel request = new DeleteOneModel(query);
        ;
        requests.add(request);
    }
    // Bulk delete the collection's request
    for (Map.Entry<String, ArrayList<WriteModel>> entry : collectionRequests.entrySet()) {
        String[] name = entry.getKey().split("_");
        ArrayList<WriteModel> requests = entry.getValue();
        MongoCollection mongoCollection = this.getCollection(name[0], name[1]);
        if (mongoCollection == null) {
            throw new RuntimeErrorException(new Error("Could not delete into collection " + entry.getKey()));
        }
        BulkWriteOptions options = new BulkWriteOptions();
        options.ordered(false);
        mongoCollection.bulkWrite(requests, options);
    }
}

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From source file:org.opencb.commons.datastore.mongodb.MongoDBNativeQuery.java

License:Apache License

public BulkWriteResult remove(List<? extends Bson> queryList, boolean multi) {
    List<WriteModel<Document>> actions = new ArrayList<>(queryList.size());
    if (multi) {/*from ww w. j a  va  2 s.c  om*/
        for (Bson document : queryList) {
            actions.add(new DeleteManyModel<>(document));
        }
    } else {
        for (Bson document : queryList) {
            actions.add(new DeleteOneModel<>(document));
        }
    }
    return dbCollection.bulkWrite(actions, new BulkWriteOptions().ordered(false));
}

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From source file:tour.NewQuickTour.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 *///from   w  w w  .  ja  va  2 s  .c om
public static void main(final String[] args) {
    MongoClient mongoClient;

    if (args.length == 0) {
        // connect to the local database server
        mongoClient = new MongoClient();
    } else {
        mongoClient = new MongoClient(new MongoClientURI(args[0]));
    }

    // get handle to "mydb" database
    MongoDatabase database = mongoClient.getDatabase("mydb");

    database.drop();

    // get a list of the collections in this database and print them out
    List<String> collectionNames = database.listCollectionNames().into(new ArrayList<String>());
    for (final String s : collectionNames) {
        System.out.println(s);
    }

    // get a handle to the "test" collection
    MongoCollection<Document> collection = database.getCollection("test");

    // drop all the data in it
    collection.drop();

    // make a document and insert it
    Document doc = new Document("name", "MongoDB").append("type", "database").append("count", 1).append("info",
            new Document("x", 203).append("y", 102));

    collection.insertOne(doc);

    // get it (since it's the only one in there since we dropped the rest earlier on)
    Document myDoc = collection.find().first();
    System.out.println(myDoc);

    // now, lets add lots of little documents to the collection so we can explore queries and cursors
    List<Document> documents = new ArrayList<Document>();
    for (int i = 0; i < 100; i++) {
        documents.add(new Document("i", i));
    }
    collection.insertMany(documents);
    System.out.println(
            "total # of documents after inserting 100 small ones (should be 101) " + collection.count());

    // lets get all the documents in the collection and print them out
    MongoCursor<Document> cursor = collection.find().iterator();
    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    for (Document cur : collection.find()) {
        System.out.println(cur);
    }

    // now use a query to get 1 document out
    myDoc = collection.find(eq("i", 71)).first();
    System.out.println(myDoc);

    // now use a range query to get a larger subset
    cursor = collection.find(gt("i", 50)).iterator();

    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    // range query with multiple constraints
    cursor = collection.find(and(gt("i", 50), lte("i", 100))).iterator();

    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    // max time
    collection.find().maxTime(1, TimeUnit.SECONDS).first();

    collection.drop();

    // ordered bulk writes
    List<WriteModel<Document>> writes = new ArrayList<WriteModel<Document>>();
    writes.add(new InsertOneModel<Document>(new Document("_id", 4)));
    writes.add(new InsertOneModel<Document>(new Document("_id", 5)));
    writes.add(new InsertOneModel<Document>(new Document("_id", 6)));
    writes.add(
            new UpdateOneModel<Document>(new Document("_id", 1), new Document("$set", new Document("x", 2))));
    writes.add(new DeleteOneModel<Document>(new Document("_id", 2)));
    writes.add(new ReplaceOneModel<Document>(new Document("_id", 3), new Document("_id", 3).append("x", 4)));

    collection.bulkWrite(writes);

    collection.drop();

    collection.bulkWrite(writes, new BulkWriteOptions().ordered(false));

    // getting a list of databases
    for (String name : mongoClient.listDatabaseNames()) {
        System.out.println(name);
    }

    // drop a database
    mongoClient.dropDatabase("databaseToBeDropped");

    // create a collection
    database.createCollection("cappedCollection",
            new CreateCollectionOptions().capped(true).sizeInBytes(0x100000));

    for (String name : database.listCollectionNames()) {
        System.out.println(name);
    }

    // create an ascending index on the "i" field
    collection.createIndex(new Document("i", 1));

    // list the indexes on the collection
    for (final Document index : collection.listIndexes()) {
        System.out.println(index);
    }

    // create a text index on the "content" field
    collection.createIndex(new Document("content", "text"));

    collection.insertOne(new Document("_id", 0).append("content", "textual content"));
    collection.insertOne(new Document("_id", 1).append("content", "additional content"));
    collection.insertOne(new Document("_id", 2).append("content", "irrelevant content"));

    // Find using the text index
    Document search = new Document("$search", "textual content -irrelevant");
    Document textSearch = new Document("$text", search);
    long matchCount = collection.count(textSearch);
    System.out.println("Text search matches: " + matchCount);

    // Find using the $language operator
    textSearch = new Document("$text", search.append("$language", "english"));
    matchCount = collection.count(textSearch);
    System.out.println("Text search matches (english): " + matchCount);

    // Find the highest scoring match
    Document projection = new Document("score", new Document("$meta", "textScore"));
    myDoc = collection.find(textSearch).projection(projection).first();
    System.out.println("Highest scoring document: " + myDoc);

    // release resources
    mongoClient.close();
}

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