Github user olegz commented on a diff in the pull request: https://github.com/apache/nifi/pull/354#discussion_r60167411 --- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/TransformJSON.java --- @@ -0,0 +1,211 @@ +/* + * 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.standard; + + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.concurrent.TimeUnit; + +import org.apache.nifi.annotation.behavior.EventDriven; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.SideEffectFree; +import org.apache.nifi.annotation.behavior.SupportsBatching; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.components.AllowableValue; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.ValidationContext; +import org.apache.nifi.components.ValidationResult; +import org.apache.nifi.components.Validator; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.logging.ProcessorLog; +import org.apache.nifi.processor.AbstractProcessor; +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.apache.nifi.processor.io.StreamCallback; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.stream.io.BufferedInputStream; +import org.apache.nifi.util.StopWatch; + +import com.bazaarvoice.jolt.Shiftr; +import com.bazaarvoice.jolt.Removr; +import com.bazaarvoice.jolt.Chainr; +import com.bazaarvoice.jolt.Defaultr; +import com.bazaarvoice.jolt.Transform; +import com.bazaarvoice.jolt.JsonUtils; + +@EventDriven +@SideEffectFree +@SupportsBatching +@Tags({"json", "jolt", "transform", "shiftr", "chainr", "defaultr", "removr"}) +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@CapabilityDescription("Applies a list of JOLT specifications to the flowfile JSON payload. A new FlowFile is created " + + "with transformed content and is routed to the 'success' relationship. If the JSON transform " + + "fails, the original FlowFile is routed to the 'failure' relationship") +public class TransformJSON extends AbstractProcessor { + + public static final AllowableValue SHIFTR = new AllowableValue("Shift", "Shift Transform DSL", "This JOLT transformation will shift input JSON/data to create the output JSON/data."); + public static final AllowableValue CHAINR = new AllowableValue("Chain", "Chain Transform DSL", "Execute list of JOLT transformations."); + public static final AllowableValue DEFAULTR = new AllowableValue("Default", "Default Transform DSL", " This JOLT transformation will apply default values to the output JSON/data."); + public static final AllowableValue REMOVR = new AllowableValue("Remove", "Remove Transform DSL", " This JOLT transformation will apply default values to the output JSON/data."); + + public static final PropertyDescriptor JOLT_SPEC = new PropertyDescriptor.Builder() + .name("Jolt Specification") --- End diff -- Something @alopresto pointed out on another unrelated PR, yet a valid point and we need to start making it as a rule and that is using _name_ and _displayName_. In fact I'll quote Andy's comment: ".name should be a machine-safe string (i.e. ssl-context-service) which will remain constant over the life of the processor because it is used for object resolution when loading from the flow.tar.gz file. For the human-readable value to display in the UI, please use .displayName. This can be changed without affecting object resolution (for future renaming, internationalization, etc.)." So, you can name the above property "jolt-spec" or something like that, yet keep _displayName_ "Jolt Specification". The benefit if at some point we find a more user friendly name we'll be able to change it at will, which is not something we'll be able to do with the current approach.
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