问题
I am trying the Data Import Handler for SQLServer Database.
I added the DIhandler in solrconfig.xml
, created a data-config.xml
according to my database schema and also added a field in the schema.xml
which was different. I am connecting with SQLServer database.
After I connect and I run the dataimport?command=full-import
I am not getting xml tag (data) properly.
in my data-config.xml*****
<document name="Product">
<entity dataSource="ds-1" name="Item" pk="Item_ID"
query="select item.Item_ID, itemcode from item"
deltaImportQuery="select item.Item_ID, itemcode from item where
item.Item_ID='${dataimporter.delta.Item_ID}' "
deltaQuery="select Item_ID from item where last_modified >
'${dataimporter.last_index_time}' ">
<entity name="ReturnSolrFilter"
query="select Item_Id , CustomField_ID as CustomField from
ReturnSolrFilter where Item_Id = '${Item.Item_ID}' "
deltaQuery="select Item_Id , CustomField_ID as CustomField from
ReturnSolrFilter where last_modified >
'${dataimporter.last_index_time}' "
parentDeltaQuery="select Item_ID from item where Item_ID =
'${ReturnSolrFilter.Item_ID}' ">
</entity>
</entity>
</document>
Now the Result is *******
if data found in both Table
< doc>
< int name="Item_ID">13773< /int> < str name="itemcode">15438680< /str> < arr name="CustomField"> < str>31< /str> < str>32< /str> < /arr> < /doc>
if data found in Item Table but not in ReturnSolrFilter then Tag is not generated(This is Actual Problem CustomField tag not generated)
< doc>
< int name="Item_ID">13773< /int>
< str name="itemcode">15438680< /str>
< /doc>
回答1:
I think you will need to wrap your CustomField_ID with isnull: isnull(Custom_ID, '') as CustomField
that should force the DataImportHandler to create an empty field for CustomField in the generated XML for submission as the solr document.
来源:https://stackoverflow.com/questions/7846018/data-import-in-solr-from-multiple-entity