[SOLR-9558] DIH TemplateTransformer does not support multiple values

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 6.2
• Fix Version/s: 6.3, 7.0
• Component/s: contrib - DataImportHandler
• Assignee: Noble Paul
• Reporter: Ted Sullivan
• Created: 25/Sep/16 13:15
• Updated: 08/Jun/19 15:31
• Resolved: 26/Sep/16 07:31

Description

The DIH TemplateTransformer does not support multiple templates with the same column name. Rather than creating a List of values as it should do in this case, the value of the last <field> tag with the same column name replaces the values of previous transforms for that column. The reason is that it uses a single HashMap to store the transformations with a key on column name. The fix is to detect if a column has previously been transformed within the same field set and to create a List<Object> for that column when this occurrs.