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https://issues.apache.org/jira/browse/NIFI-3497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15895393#comment-15895393
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ASF GitHub Bot commented on NIFI-3497:
--------------------------------------
Github user alopresto commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1536#discussion_r104273923
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ScanAttribute.java
---
@@ -97,13 +107,23 @@
.addValidator(StandardValidators.createRegexValidator(0, 1,
false))
.defaultValue(null)
.build();
+ public static final PropertyDescriptor
DICTIONARY_ENTRY_METADATA_DEMARCATOR = new PropertyDescriptor.Builder()
+ .name("Dictionary Entry Metadata Demarcator")
--- End diff --
The preferred code style is to use a "machine-readable" (aka no spaces)
value for `name` and provide a human-formatted value for `displayName`.
> ScanAttribute should support tagging a flowfile with metadata value from the
> supplied dictionary
> ------------------------------------------------------------------------------------------------
>
> Key: NIFI-3497
> URL: https://issues.apache.org/jira/browse/NIFI-3497
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Joseph Witt
> Assignee: Joseph Witt
>
> Today ScanAttribute just looks through the supplied dictionary and given
> object for a string matching hit. If it hits then it is a match otherwise it
> is a 'not found'. However, when a hit occurs it can often be quite useful to
> gather additional metadata about that hit. This makes cases like
> enrichment/tagging much easier.
> So, plan is to have ScanAttribute support a dictionary value demarcator which
> would separate the dictionary term from some string response that will be
> added to the flowfile. For instance a dictionary might have
> apples:These are red or green
> bananas:These are yellow unless you should toss them or make bread
> Then if a hit occurs on 'apples' the flowfile that contained such an
> attribute would have a new attribute such as 'dictionary.hit.term' = 'apple'
> and 'dictionary.hit.metadata' = 'These are red or green'.
> This means downstream processors could extract that metadata and do
> interesting things with it.
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