Java tutorial
/* * Copyright (c) 2017. Hans-Peter Grahsl (grahslhp@gmail.com) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package at.grahsl.kafka.connect.mongodb.cdc.debezium.mongodb; import at.grahsl.kafka.connect.mongodb.cdc.CdcOperation; import at.grahsl.kafka.connect.mongodb.converter.SinkDocument; import com.mongodb.DBCollection; import com.mongodb.client.model.DeleteOneModel; import com.mongodb.client.model.WriteModel; import org.apache.kafka.connect.errors.DataException; import org.bson.BsonDocument; public class MongoDbDelete implements CdcOperation { @Override public WriteModel<BsonDocument> perform(SinkDocument doc) { BsonDocument keyDoc = doc.getKeyDoc() .orElseThrow(() -> new DataException("error: key doc must not be missing for delete operation")); try { BsonDocument filterDoc = BsonDocument.parse("{" + DBCollection.ID_FIELD_NAME + ":" + keyDoc.getString(MongoDbHandler.JSON_ID_FIELD_PATH).getValue() + "}"); return new DeleteOneModel<>(filterDoc); } catch (Exception exc) { throw new DataException(exc); } } }