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https://issues.apache.org/jira/browse/OLINGO-720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14623821#comment-14623821
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Chandan V.A edited comment on OLINGO-720 at 7/12/15 2:09 PM:
-------------------------------------------------------------
At times it is required to build custom query objects for OData's GetEntitySet,
GetEntity, GetEntityCount, GetEntitySetCount, GetEntity before Delete and
Update request. Currently there is no provision for applications to build
custom query objects. In order to build custom query object applications can
extend
1)
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
class and implement the necessary methods in the class. If a method is not
overriden by the inheriting class then JPA processor builds the JPA query using
default logic.
2) Register the class as JPA entity listener with the JPA entity for which
custom query needs to be built.
3) If the extended class supports OData Tombstone feature then return "true"
for the method call isTombstoneSupported() else just return false.
Applications wishing to just support OData Tombstone (delta query) feature can
extend
org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneEntityListener.
However applications wishing to support custom JPA query and also would like to
support OData Tombstone feature can extend
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
and return "true" for the method call isTombstoneSupported() as the class
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
extends
org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneEntityListener.
Please Note:- A JPA entity can be registered with an entity listener that
either extends ODataJPAQueryExtensionEntityListener or
ODataJPATombstoneEntityListener. If a JPA entity is registered with two
different entity listeners with one extending ODataJPATombstoneEntityListener
and the other ODataJPAQueryExtensionEntityListener will not work as expected.
The class -
org.apache.olingo.odata2.jpa.processor.ref.listeners.CustomerQueryExtension in
module olingo-odata2-jpa-processor-ref provides a reference for using
ODataJPAQueryExtensionEntityListener.
Thanks
Kind Regards
Chandan
was (Author: chandan.v.a):
At times it is required to build custom query objects for OData's GetEntitySet,
GetEntity, GetEntityCount, GetEntitySetCount, GetEntity before Delete and
Update request. Currently there is no provision for applications to build
custom query objects. In order to build custom query object applications can
extend
1)
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
class and implement the necessary methods in the class. If a method is not
overriden by the inheriting class then JPA processor builds the JPA query using
default logic.
2) Register the class as JPA entity listener with the JPA entity for which
custom query needs to be built.
3) If the extended class supports OData Tombstone feature then return "true"
for the method call isTombstoneSupported() else just return false.
Applications wishing to just support OData Tombstone (delta query) feature can
extend
org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneEntityListener.
However applications wishing to support custom JPA query and also would like to
support OData Tombstone feature can extend
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
and return "true" for the method call isTombstoneSupported() as the class
org.apache.olingo.odata2.jpa.processor.api.ODataJPAQueryExtensionEntityListener
extends
org.apache.olingo.odata2.jpa.processor.api.ODataJPATombstoneEntityListener.
Please Note:- A JPA entity can be registered with an entity listener that
either extends ODataJPAQueryExtensionEntityListener or
ODataJPATombstoneEntityListener. If a JPA entity is registered with two
different entity listeners with one extending ODataJPATombstoneEntityListener
and the other ODataJPAQueryExtensionEntityListener will not work as expected.
Thanks
Kind Regards
Chandan
> ODataJPATombstoneEntityListener does not support "count" and "GetEntity"
> ------------------------------------------------------------------------
>
> Key: OLINGO-720
> URL: https://issues.apache.org/jira/browse/OLINGO-720
> Project: Olingo
> Issue Type: Bug
> Components: odata2-jpa
> Affects Versions: V2 2.0.4
> Reporter: Christian Wilhelm
> Assignee: Chandan V.A
>
> Hello,
> The ODataJPATombstoneEntityListener which is originally reuqired for the
> DeltaQuerySuppoort is not listening for OData "count" operation and the
> "GetEntity" operation.
> I am (mis-)using this listener concept for injecting a security layer -
> therefore the two operations mentioned above should be included in the
> ODataJPATombstoneEntityListener concept.
> Is it possible to add this function?
> Best regards,
> Christian
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