List of usage examples for com.mongodb DBCollection drop
public void drop()
From source file:org.apache.hadoop.contrib.mongoreduce.MongoStreamOutputFormat.java
License:Apache License
public void checkOutputSpecs(FileSystem ignored, JobConf conf) throws IOException { if (conf.getBoolean("mongo.output.skip_splitting", false)) return;/*from ww w .j a v a 2s . co m*/ String database = conf.get("mongo.output.database", ""); if (database.equals("")) { throw new IOException("must specify a value for mongo.output.database"); } String collection = conf.get("mongo.output.collection", ""); if (collection.equals("")) { throw new IOException("must supply a value for mongo.output.collection"); } // connect to global db Mongo m = new Mongo("localhost"); DB db = m.getDB(database); DB admindb = m.getDB("admin"); DB configdb = m.getDB("config"); // optionally drop the existing collection boolean drop = conf.getBoolean("mongo.output.drop", false); DBCollection coll = db.getCollection(collection); if (drop) { coll.drop(); } else { if (coll.count() > 0) { // don't shard an existing collection - may already be sharded ... return; } } // get a list of shards ArrayList<String> shards = new ArrayList<String>(); for (DBObject s : configdb.getCollection("shards").find()) { shards.add((String) s.get("_id")); } if (shards.size() < 2) { // don't let's be silly return; } // shard the new output collection BasicDBObjectBuilder builder = new BasicDBObjectBuilder(); builder.add("enableSharding", database); admindb.command(builder.get()); builder = new BasicDBObjectBuilder(); builder.add("shardCollection", database + "." + collection); // just shard on _id - but user gets to decide what the _id is builder.add("key", new BasicDBObject("_id", 1)); admindb.command(builder.get()); // pre-split to get parallel writes // this http://www.mongodb.org/display/DOCS/Splitting+Chunks says // balancer moving chunks should take 5 minutes ... too long // wonder if moveChunk command is faster // well we could do it anyway - the jobs that can benefit from it will // check for user-submitted splitPoints String[] splits; String splitString = conf.get("mongo.output.split_points", ""); // generate our own split points if necessary if (splitString.equals("")) { long max = (long) Math.pow(93.0, 5.0); long step = max / shards.size(); splits = new String[shards.size() - 1]; // assume human readable keys for (int i = 0; i < shards.size() - 1; i++) { splits[i] = splitPointForLong(step * (i + 1)); } } else { splits = splitString.split(","); } HashMap<String, Object> splitCmd = new HashMap<String, Object>(); splitCmd.put("split", database + "." + collection); splitCmd.put("middle", ""); HashMap<String, Object> moveCmd = new HashMap<String, Object>(); moveCmd.put("moveChunk", database + "." + collection); moveCmd.put("find", ""); moveCmd.put("to", ""); // do the splitting and migrating // we assign chunks to shards in a round-robin manner int i = 0; for (String split : splits) { splitCmd.remove("middle"); splitCmd.put("middle", new BasicDBObject("_id", split)); // create new chunk admindb.command(new BasicDBObject(splitCmd)); // move to shard moveCmd.remove("find"); moveCmd.put("find", new BasicDBObject("_id", split)); moveCmd.put("to", shards.get(i)); admindb.command(new BasicDBObject(moveCmd)); i = (i + 1) % shards.size(); } }
From source file:org.apache.metamodel.mongodb.mongo2.MongoDbUpdateCallback.java
License:Apache License
protected void removeCollection(String name) { DBCollection collection = getCollection(name); _collections.remove(name); collection.drop(); }
From source file:org.aw20.mongoworkbench.command.CreateDbsMongoCommand.java
License:Open Source License
@Override public void execute() throws Exception { MongoClient mdb = MongoFactory.getInst().getMongo(sName); if (mdb == null) throw new Exception("no server selected"); DB db = mdb.getDB(sDb);/* w w w . java2s .c o m*/ String colTemp = "tmp" + System.currentTimeMillis(); DBCollection coll = db.createCollection(colTemp, new BasicDBObject()); coll.drop(); setDBNames(mdb); }
From source file:org.aw20.mongoworkbench.command.DropCollectionMongoCommand.java
License:Open Source License
@Override public void execute() throws Exception { MongoClient mdb = MongoFactory.getInst().getMongo(sName); if (mdb == null) throw new Exception("no server selected"); if (sDb == null) throw new Exception("no database selected"); MongoFactory.getInst().setActiveDB(sDb); DB db = mdb.getDB(sDb);/*from w w w.j a v a2 s . c o m*/ DBCollection collection = db.getCollection(sColl); collection.drop(); super.execute(); }
From source file:org.benjp.services.mongodb.MongoBootstrap.java
License:Open Source License
private void dropTokenCollectionIfExists() { if (getDB().collectionExists("tokens")) { DBCollection tokens = getDB().getCollection("tokens"); tokens.drop(); }/*w w w . jav a2 s.c o m*/ }
From source file:org.breizhbeans.thrift.tools.thriftmongobridge.example.SimpleApp.java
License:Apache License
public static void main(String[] args) throws Exception { // --------------------------------------------------------------- // NON SECURED GET ALWAYS PASSWORD'S KEYSTORE FROM A SECURED PLACE // get it from a secured console String pwd = args[0];// w w w . ja v a 2 s . co m // get it from a console String keyProtectedPassword = args[1]; // NON SECURED GET ALWAYS PASSWORD'S KEYSTORE FROM A SECURED PLACE // --------------------------------------------------------------- // load key from the key store final KeyStore keyStore = KeyStore.getInstance("JCEKS"); keyStore.load(new FileInputStream("./keystore/secretkey.keystore"), pwd.toCharArray()); // Extract the AES key KeyStore.PasswordProtection keyPassword = new KeyStore.PasswordProtection( keyProtectedPassword.toCharArray()); KeyStore.SecretKeyEntry aesKey = (KeyStore.SecretKeyEntry) keyStore.getEntry("aesKey", keyPassword); // AES KEY byte[] key = aesKey.getSecretKey().getEncoded(); // Secured bridge initialisation // First create the wrapper SecuredWrapper securedWrapper = new SecuredWrapper(key); // Set the fields protected securedWrapper.secureThriftFields(People.class, true, People._Fields.FIRST_NAME); securedWrapper.secureThriftFields(People.class, true, People._Fields.LAST_NAME); securedWrapper.secureThriftFields(People.class, false, People._Fields.BIRTHDAY); securedWrapper.secureThriftFields(People.class, true, People._Fields.EMAIL); // Add the wrapper TBSONUnstackedProtocol.addSecuredWrapper(securedWrapper); // setup mongo // and get the collection MongoClient mongo = new MongoClient("localhost", 27017); DB db = mongo.getDB("example-thrift-mongo"); DBCollection peoples = db.getCollection("people"); // write people People people = new People(); people.setFirstName("my secret first name"); people.setLastName("my secret last name"); people.setEmail("me@me"); people.setInceptionDate(System.currentTimeMillis()); people.setBirthday("1970-01-01"); people.setLanguage("en"); // serialize it DBObject dbObject = ThriftMongoHelper.thrift2DBObject(people); System.out.println("save=" + dbObject.toString()); // write the document peoples.save(dbObject); // find document by secured field BasicDBObject searchQuery = new BasicDBObject(); searchQuery.put(People._Fields.FIRST_NAME.getFieldName(), securedWrapper.digest64("my secret first name".getBytes())); System.out.println("query=" + searchQuery.toString()); DBCursor cursor = peoples.find(searchQuery); while (cursor.hasNext()) { // print secured people DBObject dbSecuredObject = cursor.next(); System.out.println("secured=" + dbSecuredObject); // deserialize the secured object People peopleDeserialized = (People) ThriftMongoHelper.DBObject2Thrift(dbSecuredObject, People.class); System.out.println("unwrapped=" + peopleDeserialized.toString()); } // Bye System.out.println("Thrift and mongo rocks :D"); System.out.println("Destroy the collection"); peoples.drop(); }
From source file:org.codinjutsu.tools.mongo.logic.MongoManager.java
License:Apache License
public void dropCollection(ServerConfiguration configuration, MongoCollection mongoCollection) { MongoClient mongo = null;//from w w w . java2s . c om try { String databaseName = mongoCollection.getDatabaseName(); mongo = createMongoClient(configuration); DB database = mongo.getDB(databaseName); DBCollection collection = database.getCollection(mongoCollection.getName()); collection.drop(); } catch (UnknownHostException ex) { throw new ConfigurationException(ex); } finally { if (mongo != null) { mongo.close(); } } }
From source file:org.codinjutsu.tools.nosql.mongo.logic.MongoClient.java
License:Apache License
public void dropCollection(ServerConfiguration configuration, MongoCollection mongoCollection) { com.mongodb.MongoClient mongo = null; try {/*from w w w.j a va2 s.co m*/ String databaseName = mongoCollection.getDatabaseName(); mongo = createMongoClient(configuration); DB database = mongo.getDB(databaseName); DBCollection collection = database.getCollection(mongoCollection.getName()); collection.drop(); } catch (UnknownHostException ex) { throw new ConfigurationException(ex); } finally { if (mongo != null) { mongo.close(); } } }
From source file:org.datanucleus.store.mongodb.MongoDBSchemaHandler.java
License:Open Source License
@Override public void deleteSchemaForClasses(Set<String> classNames, Properties props, Object connection) { DB db = (DB) connection;/*from w w w .jav a 2 s . com*/ ManagedConnection mconn = null; try { if (db == null) { mconn = storeMgr.getConnection(-1); db = (DB) mconn.getConnection(); } Iterator<String> classIter = classNames.iterator(); ClassLoaderResolver clr = storeMgr.getNucleusContext().getClassLoaderResolver(null); while (classIter.hasNext()) { String className = classIter.next(); AbstractClassMetaData cmd = storeMgr.getMetaDataManager().getMetaDataForClass(className, clr); if (cmd != null) { StoreData storeData = storeMgr.getStoreDataForClass(cmd.getFullClassName()); Table table = null; if (storeData != null) { table = storeData.getTable(); } else { table = new CompleteClassTable(storeMgr, cmd, null); } DBCollection collection = db.getCollection(table.getName()); collection.dropIndexes(); if (NucleusLogger.DATASTORE_SCHEMA.isDebugEnabled()) { NucleusLogger.DATASTORE_SCHEMA.debug(Localiser.msg("MongoDB.SchemaDelete.Class", cmd.getFullClassName(), table.getName())); } collection.drop(); } } } finally { if (mconn != null) { mconn.release(); } } }
From source file:org.datanucleus.store.mongodb.MongoDBStoreManager.java
License:Open Source License
public void deleteSchema(Set<String> classNames, Properties props) { ManagedConnection mconn = getConnection(-1); try {//from w w w . j a va2s .c o m DB db = (DB) mconn.getConnection(); Iterator<String> classIter = classNames.iterator(); ClassLoaderResolver clr = nucleusContext.getClassLoaderResolver(null); while (classIter.hasNext()) { String className = classIter.next(); AbstractClassMetaData cmd = getMetaDataManager().getMetaDataForClass(className, clr); if (cmd != null) { DBCollection collection = db.getCollection(getNamingFactory().getTableName(cmd)); collection.dropIndexes(); collection.drop(); } } } finally { mconn.release(); } }