get index query is being executed on in IDocumentQueryListener.BeforeQueryExecuted

[Karl Cassar]

Is it possible to get the name of the index and/or collection type that the query is being executed on, in the context of an IDocumentQueryListener.BeforeQueryExecuted?

The only parameter provided is the IDocumentQueryCustomization.

Thanks,

Karl

[Chris Marisic]

The collection part doesn't make sense, an index doesn't need to operate on any collection. Indexes can also operate on many collections. You would need to analyze the full index definition to determine this

It seems very reasonable that name would be available.

[Oren Eini (Ayende Rahien)]

You can cast the IDocumentQueryCustomization to DocumentQuery<T>, and discover what it is working on from there.

From there, you can call GetIndexQuery(), and get the actual details.

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[Karl Cassar]

Hi Oren,

The problem is that I don't "know" the generic type at that stage and cannot cast it. Is it possible to get it without knowing the generic type? I managed to get it using a very ugly workaround for now, as per below:

            var type = queryCustomization.GetType();

            var method= type.GetMethod("GetIndexQuery");

            object[] parameters = new object[1];

            parameters[0] = false;

            IndexQuery result= (IndexQuery)method.Invoke(queryCustomization,parameters);

However, I still couldn't locate the index name from the IndexQuery.  And what would happen if query is on a dynamic index?

Regards,

Karl

​

[Oren Eini (Ayende Rahien)]

dynamic query = queryCustomization;

IndexQuery result = query.GetIndexQuery(false);

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

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[Chris Marisic]

It's hard for me to remember C# without dynamic, that was such an important addition.

[Karl Cassar]

I never used it before to be honest but I can imagine it's usefulness in such cases.

However, i still didnt find how I can get the actual index once I have the IndexQuery.  How can i get such information?

Regards,

Karl

​

[Oren Eini (Ayende Rahien)]

The index?

get the IndexName property

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

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[Karl Cassar]

From where?  IndexQuery does not have a .IndexName property or method.  

Regards,

​Karl

[Oren Eini (Ayende Rahien)]

dynamic query = queryCustomization;

var result = query.IndexName;

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

--

[Karl Cassar]

Hi again,

The 'query' does not have a property named IndexName.  I tried to cast to a DocumentQuery<T> temporarily and it doesnt have .IndexName. Trying to do that gives a:

'Microsoft.CSharp.RuntimeBinder.RuntimeBinderException' occurred in System.Core.dll but was not handled in user code

Additional information: 'Raven.Client.Document.DocumentQuery<ConceptTests_v2.RavenDb.SampleData.TestProduct>' does not contain a definition for 'IndexName'

Regards,

Karl

​

[Oren Eini (Ayende Rahien)]

Sorry, the property name is IndexQueried

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

--

[Karl Cassar]

Great, that works - thanks a lot as always!

Regards,

Karl

​