Luis Pabon created SOLR-4402:
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Summary: Creating dynamically named fields in requires a
Transformer
Key: SOLR-4402
URL: https://issues.apache.org/jira/browse/SOLR-4402
Project: Solr
Issue Type: Bug
Components: contrib - DataImportHandler
Affects Versions: 4.1
Environment: Ubuntu 12.04 LTS, fresh download of SOLR.
Reporter: Luis Pabon
Priority: Minor
I needed to index multiple fields from a table dynamically. At first it didn't
work, reading the field name as "_t". Out of curiosity, I added a transformer
declaration to the entity. This gave me the list of fields I needed.
Why did adding a transformer that is never used fix my problem? Removing the
transformer declaration causes the problem to come back, and it does not matter
which transformer I declare.
I am running Solr 4.1, and this issue first happened to me on the included
example-DIH example that came with the download. I read the Solr reference
guide for 4.0, and could not find a reason why adding a transformer made it
work.
Below is the db-data-config.xml file:
{code:xml}
<dataConfig>
<dataSource name="foo" driver="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost/foo" user="fakeadmin" password="fakepass"/>
<document>
<entity name="products" query="select * from `product`">
<field name="id" column="id" />
<entity name="names" query="select * from names where
productId = '${products.id}'" transformer="LogTransformer">
<field name="${names.fieldName}_t"
column="fieldValue"/>
</entity>
</entity>
</document>
</dataConfig>
{code}
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