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https://issues.apache.org/jira/browse/NIFI-3838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16003158#comment-16003158
]
ASF GitHub Bot commented on NIFI-3838:
--------------------------------------
Github user mattyb149 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1772#discussion_r115555861
--- Diff:
nifi-commons/nifi-record-path/src/main/java/org/apache/nifi/record/path/ArrayIndexFieldValue.java
---
@@ -0,0 +1,57 @@
+/*
+ * 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.record.path;
+
+import java.util.Objects;
+
+import org.apache.nifi.serialization.record.RecordField;
+import org.apache.nifi.serialization.record.RecordFieldType;
+
+public class ArrayIndexFieldValue extends StandardFieldValue {
+ private final int index;
+
+ public ArrayIndexFieldValue(final Object value, final RecordField
field, final FieldValue parent, final int index) {
+ super(value, field, validateParent(parent));
+ this.index = index;
+ }
+
+ private static FieldValue validateParent(final FieldValue parent) {
+ Objects.requireNonNull(parent, "Cannot create an
ArrayIndexFieldValue without a parent");
+ if (RecordFieldType.ARRAY !=
parent.getField().getDataType().getFieldType()) {
+ // TODO: Add Unit test that does something like
//myArray[../name = 'myName'][0] and ensure that
--- End diff --
Check your TODOs please to see which should stay and which can go :)
> Create UpdateRecord processor and provide a RecordPath DSL to specify fields
> ----------------------------------------------------------------------------
>
> Key: NIFI-3838
> URL: https://issues.apache.org/jira/browse/NIFI-3838
> Project: Apache NiFi
> Issue Type: New Feature
> Reporter: Mark Payne
> Assignee: Mark Payne
>
> With the addition of the RecordReader and RecordWriter controller services,
> it would be nice to have a Processor that is capable of updating specific
> fields of a record, based on user-defined values or based on the value of
> another field in the Record.
> To do so, we need some sort of DSL that would allow us to access a specific
> field in a record - something akin to JsonPath but that will work on any
> Record object.
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