[jira] [Commented] (OAK-6201) Native Query syntax for rep:native unclear
[
https://issues.apache.org/jira/browse/OAK-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17158606#comment-17158606
]
Konrad Windszus commented on OAK-6201:
--
After some reverse engineering I figured out the following:
# The syntax for native queries is described at
https://lucene.apache.org/core/4_7_1/queryparser/org/apache/lucene/queryparser/classic/package-summary.html
# The query parser for native functions does not set a default field name
(https://github.com/apache/jackrabbit-oak/blob/80b32f5577522d689cdc3649f64e23d9a4b5a862/oak-lucene/src/main/java/org/apache/jackrabbit/oak/plugins/index/lucene/LucenePropertyIndex.java#L874)
# The field name for the fulltext index is {{:fulltext}}
(https://github.com/apache/jackrabbit-oak/blob/64699521cd23664775d83d39146d1fe659d3495b/oak-search/src/main/java/org/apache/jackrabbit/oak/plugins/index/search/FieldNames.java#L55)
# You have to escape the colon in the field name, so that a valid query might
look like this in SQL2 {{... native('custom-index-function-name',
'\:fulltext:()')}}
> Native Query syntax for rep:native unclear
> --
>
> Key: OAK-6201
> URL: https://issues.apache.org/jira/browse/OAK-6201
> Project: Jackrabbit Oak
> Issue Type: Documentation
>Reporter: David Gonzalez
>Assignee: Tommaso Teofili
>Priority: Minor
>
> I was trying to perform a few test queries against an Oak 1.6.x repository
> using the XPath with the rep:native(..) function and but could not get any to
> work.
> I suspect my problem is with specifying the field, but i've tried a variety
> of permutations to no avail.
> For example, if tried to re-purpose the example XPath query to search over an
> asset's dc:title [1],
> Generally, i think the documentation [2] is lacking in that 1) unclear on the
> syntax 2) unclear if i need to do anything special to Oak indexes 3) if only
> the provided lucene index will service these requests (these are all from a
> lucene POV, rather than Solr, though assume all the same considerations apply)
> [1] Non-working: {code}
> //element(*, app:Asset)[(rep:native('lucene',
> 'jcr:contnet/metdata/dc:title:(Hello OR World)'))]
> {code}
> [2]
> http://jackrabbit.apache.org/oak/docs/query/query-engine.html#Native_Queries
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[jira] [Commented] (OAK-6201) Native Query syntax for rep:native unclear
[
https://issues.apache.org/jira/browse/OAK-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157472#comment-17157472
]
Konrad Windszus commented on OAK-6201:
--
A page for how JCR properties are translated to field names in Lucene and Solr
would be highly appreciated. [~teofili] Would you be able to come up with
something in the near future?
> Native Query syntax for rep:native unclear
> --
>
> Key: OAK-6201
> URL: https://issues.apache.org/jira/browse/OAK-6201
> Project: Jackrabbit Oak
> Issue Type: Documentation
>Reporter: David Gonzalez
>Assignee: Tommaso Teofili
>Priority: Minor
>
> I was trying to perform a few test queries against an Oak 1.6.x repository
> using the XPath with the rep:native(..) function and but could not get any to
> work.
> I suspect my problem is with specifying the field, but i've tried a variety
> of permutations to no avail.
> For example, if tried to re-purpose the example XPath query to search over an
> asset's dc:title [1],
> Generally, i think the documentation [2] is lacking in that 1) unclear on the
> syntax 2) unclear if i need to do anything special to Oak indexes 3) if only
> the provided lucene index will service these requests (these are all from a
> lucene POV, rather than Solr, though assume all the same considerations apply)
> [1] Non-working: {code}
> //element(*, app:Asset)[(rep:native('lucene',
> 'jcr:contnet/metdata/dc:title:(Hello OR World)'))]
> {code}
> [2]
> http://jackrabbit.apache.org/oak/docs/query/query-engine.html#Native_Queries
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[jira] [Commented] (OAK-6201) Native Query syntax for rep:native unclear
[
https://issues.apache.org/jira/browse/OAK-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16006421#comment-16006421
]
Tommaso Teofili commented on OAK-6201:
--
> Looking forward to the eventual doc updates!
+1
note that the mentioned page at [1[ is the generic page for nativa language
support, we should have a dedicated section in our Lucene and Solr indexes that
describes each indexing implementation assumptions and expectations with
regards to that, with examples.
> Native Query syntax for rep:native unclear
> --
>
> Key: OAK-6201
> URL: https://issues.apache.org/jira/browse/OAK-6201
> Project: Jackrabbit Oak
> Issue Type: Documentation
>Reporter: David Gonzalez
>Priority: Minor
>
> I was trying to perform a few test queries against an Oak 1.6.x repository
> using the XPath with the rep:native(..) function and but could not get any to
> work.
> I suspect my problem is with specifying the field, but i've tried a variety
> of permutations to no avail.
> For example, if tried to re-purpose the example XPath query to search over an
> asset's dc:title [1],
> Generally, i think the documentation [2] is lacking in that 1) unclear on the
> syntax 2) unclear if i need to do anything special to Oak indexes 3) if only
> the provided lucene index will service these requests (these are all from a
> lucene POV, rather than Solr, though assume all the same considerations apply)
> [1] Non-working: {code}
> //element(*, app:Asset)[(rep:native('lucene',
> 'jcr:contnet/metdata/dc:title:(Hello OR World)'))]
> {code}
> [2]
> http://jackrabbit.apache.org/oak/docs/query/query-engine.html#Native_Queries
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[jira] [Commented] (OAK-6201) Native Query syntax for rep:native unclear
[
https://issues.apache.org/jira/browse/OAK-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16006357#comment-16006357
]
David Gonzalez commented on OAK-6201:
-
[~teofili] Agree; IME not many developers that work on oak-platforms have an
understanding of lucene's underpinnings, making the many nods to lucene
functionalities confounding; TBH, im still unclear how to derive the field name
for any bit of data indexed into the lucene document. (which is fine, as this
should be addressed in the docs, not necessarily in the jira issue). Looking
forward to the eventual doc updates!
> Native Query syntax for rep:native unclear
> --
>
> Key: OAK-6201
> URL: https://issues.apache.org/jira/browse/OAK-6201
> Project: Jackrabbit Oak
> Issue Type: Documentation
>Reporter: David Gonzalez
>Priority: Minor
>
> I was trying to perform a few test queries against an Oak 1.6.x repository
> using the XPath with the rep:native(..) function and but could not get any to
> work.
> I suspect my problem is with specifying the field, but i've tried a variety
> of permutations to no avail.
> For example, if tried to re-purpose the example XPath query to search over an
> asset's dc:title [1],
> Generally, i think the documentation [2] is lacking in that 1) unclear on the
> syntax 2) unclear if i need to do anything special to Oak indexes 3) if only
> the provided lucene index will service these requests (these are all from a
> lucene POV, rather than Solr, though assume all the same considerations apply)
> [1] Non-working: {code}
> //element(*, app:Asset)[(rep:native('lucene',
> 'jcr:contnet/metdata/dc:title:(Hello OR World)'))]
> {code}
> [2]
> http://jackrabbit.apache.org/oak/docs/query/query-engine.html#Native_Queries
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[jira] [Commented] (OAK-6201) Native Query syntax for rep:native unclear
[
https://issues.apache.org/jira/browse/OAK-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16004727#comment-16004727
]
Tommaso Teofili commented on OAK-6201:
--
I think your problem relates to the assumption that a (relative) property maps
1:1 with a Lucene index, which is not the case, e.g. properties that are used
for full text search will usually have a name like _:fulltext:dc:title_.
On the other hand we need to consider the fact that not all of the users may
have knowledge about how information about a certain property is indexed into
Lucene (or Solr) therefore it'd be helpful to provide some guidance on how to
use native query language depending on configuration of the Oak Lucene index to
be used.
> Native Query syntax for rep:native unclear
> --
>
> Key: OAK-6201
> URL: https://issues.apache.org/jira/browse/OAK-6201
> Project: Jackrabbit Oak
> Issue Type: Documentation
>Reporter: David Gonzalez
>Priority: Minor
>
> I was trying to perform a few test queries against an Oak 1.6.x repository
> using the XPath with the rep:native(..) function and but could not get any to
> work.
> I suspect my problem is with specifying the field, but i've tried a variety
> of permutations to no avail.
> For example, if tried to re-purpose the example XPath query to search over an
> asset's dc:title [1],
> Generally, i think the documentation [2] is lacking in that 1) unclear on the
> syntax 2) unclear if i need to do anything special to Oak indexes 3) if only
> the provided lucene index will service these requests (these are all from a
> lucene POV, rather than Solr, though assume all the same considerations apply)
> [1] Non-working: {code}
> //element(*, app:Asset)[(rep:native('lucene',
> 'jcr:contnet/metdata/dc:title:(Hello OR World)'))]
> {code}
> [2]
> http://jackrabbit.apache.org/oak/docs/query/query-engine.html#Native_Queries
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