Content Comparison

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Sources are components that enable 

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 to talk to back-end services. They let 

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 do query and ingest operations on catalog stores, and query operations on federated sources. Sources reside in the Sources area of the 

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 Overview.

Anchor
CreatingANewSource CreatingANewSource

Creating a New Source

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1. Create a new class that implements the specified Source interface.
2. Implement the required methods.
3. Create OSGi descriptor file to communicate with the OSGi registry (described in the Working with OSGi  section).
   1. Import

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      packages
   2. Register source class as service to OSGi registry
4. Deploy to

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   • Check the Working with OSGi - Bundles section.

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1. Create java class that implements CatalogProvider

   Code Block
   public class TestCatalogProvider implements ddf.catalog.source.CatalogProvider

2. Implement the required methods from the ddf.catalog.source.CatalogProvider interface

   Code Block
   public CreateResponse create(CreateRequest createRequest) throws IngestException; public UpdateResponset update(UpdateRequest updateRequest) throws IngestException; public DeleteResponse delete(DeleteRequest deleteRequest) throws IngestException;

3. Import the

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   interface packages to the bundle manifest (in addition to any other required packages):

   Code Block
   Import-Package: ddf.catalog, ddf.catalog.source

4. Export the service to the OSGi registry:

   Code Block
   xml xml title Blueprint example xml
   <service ref="[[TestCatalogProvider]]" interface="ddf.catalog.source.CatalogProvider" />

The

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Integrator's Guide provides details on the following Catalog Providers that come with 

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out of the box:

• Dummy Catalog Provider

Tip
A code example of a Catalog Provider delivered with  Insert excerpt ApplicationName ApplicationName nopanel true ApplicationName is the Catalog Solr Embedded Provider.

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1. Create Java class that implements FederatedSource

   Code Block
   public class TestFederatedSource implements ddf.catalog.source.FederatedSource

2. Implement the required methods of the ddf.catalog.source.FederatedSource interface.

   
   

    

3. Import the

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   interface packages to the bundle manifest (in addition to any other required packages):

   Code Block
   Import-Package: ddf.catalog, ddf.catalog.source

4. Export the service to the OSGi registry:

   Code Block
   xml xml title Blueprint examplexml
   <service ref="[[TestFederatedSource]]" interface="ddf.catalog.source.FederatedSource" />

The

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Integrator's Guide provides details on the following Federated Sources that come with 

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out of the box:

• OpenSearch Source

Tip
A code example of a Federated Source delivered with  Insert excerpt ApplicationName ApplicationName nopanel trueApplicationName can be found in ddf.catalog.source.solr

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1. Create Java class that implements ConnectedSource

   Code Block
   public class TestConnectedSource implements ddf.catalog.source.ConnectedSource

2. Implement the required methods of the ddf.catalog.source.ConnectedSource interface.

   
   

    

3. Import the

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   interface packages to the bundle manifest (in addition to any other required packages):

   Code Block
   Import-Package: ddf.catalog, ddf.catalog.source

4. Export the service to the OSGi registry:

   Code Block
   xml xml title Blueprint examplexml
   <service ref="[[TestConnectedSource]]" interface="ddf.catalog.source.ConnectedSource" />

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