Alexandre Paulo created COUCHDB-1469:
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Summary: Filtered replication dies with criteria values not "root"
Key: COUCHDB-1469
URL: https://issues.apache.org/jira/browse/COUCHDB-1469
Project: CouchDB
Issue Type: Question
Components: Replication
Affects Versions: 1.2
Reporter: Alexandre Paulo
Priority: Minor
<< Excuse my english... I am portuguese >>
I have a document structure that goes like this:
{
"Location": {
"City": ...,
"Region": ...,
"Country": ...
}
}
I'd like to replicate my documents based on "Region", so, I wrote a filter
function with
if (doc.Location.Region && doc.Location.Region == ...) {
return true;
} else {
return false;
}
But the replication dies with {"error":"changes_reader_died"}
I tested my function as a Map function on a view, just replacion "return true"
with "emit (true)" and "return false" with "emit (false)" and it works fine.
After some testing I came to the conclusion that the replication filter
function works fine with first-level fields (e.g. "doc.field") but dies with
multi-level fields (e.g. "doc.parent.field")
In other words it does not compute "doc.Location.Region" on my filter function.
I had to change my document structure to have "doc.Region".
Now my questions:
- is this a bug or is it intended to work this way?
- if it is intended why is it allowed on Map functions, but not on filter
functions?
Thanks a lot!
<< Excuse my english... I am portuguese >>
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