Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/354#discussion_r60167981
--- 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")
+ .description("Jolt Specification for transform of JSON data.")
+ .required(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .addValidator(new JOLTSpecValidator())
+ .required(true)
+ .build();
--- End diff --
Looking at the tests I am now wondering if we should also support pointing
to a file which contains spec. If json spec is simple it may be OK to just type
it in, but even in your tests some are rather complex and it may not be very
convenient for the user to just type it in. Also, the user may not be
technically skilled to do that and may rely on the library of specs files. What
do you think?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
