Github user mattyb149 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2295#discussion_r156244249
--- Diff:
nifi-nar-bundles/nifi-mongodb-bundle/nifi-mongodb-processors/src/main/java/org/apache/nifi/processors/mongodb/DeleteMongo.java
---
@@ -0,0 +1,151 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.nifi.processors.mongodb;
+
+import com.mongodb.WriteConcern;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.result.DeleteResult;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.bson.Document;
+
+import java.io.ByteArrayOutputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+@EventDriven
+@Tags({ "delete", "mongo", "mongodb" })
+@CapabilityDescription(
+ "Executes a delete query against a MongoDB collection. The query
is provided in the body of the flowfile " +
+ "and the user can select whether it will delete one or many
documents that match it."
+)
+public class DeleteMongo extends AbstractMongoProcessor {
+
+ private final static Set<Relationship> relationships;
+ private final static List<PropertyDescriptor> propertyDescriptors;
+
+ static final AllowableValue DELETE_ONE = new AllowableValue("one",
"Delete One", "Delete only the first document that matches the query.");
+ static final AllowableValue DELETE_MANY = new AllowableValue("many",
"Delete Many", "Delete every document that matches the query.");
+
+ static final AllowableValue YES_FAIL = new AllowableValue("true",
"True", "Fail when no documents are deleted.");
+ static final AllowableValue NO_FAIL = new AllowableValue("false",
"False", "Do not fail when nothing is deleted.");
+
+ static final PropertyDescriptor DELETE_MODE = new
PropertyDescriptor.Builder()
+ .name("delete-mongo-delete-mode")
+ .displayName("Delete Mode")
+ .description("Choose between deleting one document by query or
many documents by query.")
+ .allowableValues(DELETE_ONE, DELETE_MANY)
--- End diff --
Is this something that the user would want to configure per-flow file? If
so, one pattern that is used (to keep the dropdown for allowable values) is to
pick an attribute (such as "mongodb.delete.mode") and add an allowable value
"Use 'mongodb.delete.mode' attribute"
---
