Github user mattyb149 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2003#discussion_r127116107
--- Diff:
nifi-nar-bundles/nifi-standard-services/nifi-record-serialization-services-bundle/nifi-record-serialization-services/src/main/java/org/apache/nifi/csv/CSVUtils.java
---
@@ -37,6 +45,16 @@
"The format used by Informix when issuing the UNLOAD TO file_name
command with escaping disabled");
static final AllowableValue MYSQL = new AllowableValue("mysql", "MySQL
Format", "CSV data follows the format used by MySQL");
+ static final AllowableValue SCHEMA_ACCESS_STRATEGY_EXPLICIT_COLUMNS =
new AllowableValue("csv-explicit-columns", "Use '" +
EXPLICIT_COLUMNS_DISPLAY_NAME + "' Property",
+ "Takes the '" + EXPLICIT_COLUMNS_DISPLAY_NAME + "' property
value as the explicit definition of the CSV columns.");
+
+ static final PropertyDescriptor EXPLICIT_COLUMNS = new
PropertyDescriptor.Builder()
+ .name(EXPLICIT_COLUMNS_DISPLAY_NAME)
+ .description("Specifies the CSV columns expected as a comma
separated list. Only used with the Schema Access Strategy '" +
SCHEMA_ACCESS_STRATEGY_EXPLICIT_COLUMNS.getDisplayName() + "'.")
+ .expressionLanguageSupported(false)
--- End diff --
Is there any reason why expression language should not be supported? Using
a Variable Registry for example, the header list could be set externally.
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