Indexing heterogeneous resources

A method comprising:

• determining a query parameter specifying a property value of a resource property of a resource based, at least in part, on a received query, wherein the query is generated to retrieve the resource from a resource store of heterogeneous native format resources;
• searching through an index store that comprises a plurality of index documents to identify an index document that indicates the resource property and the corresponding property value specified in the query parameter, wherein the plurality of index documents have common formatting;
• determining whether the index store comprises the index document that indicates the resource property and the corresponding property value specified in the query parameter;
• in response to determining that the index store comprises the index document that indicates the resource property and the corresponding property value specified in the query parameter,
• identifying the index document that indicates the resource property and the property value specified in the query parameter and that references the resource in the resource store;
• and
• retrieving the resource from the resource store based on said identifying the index document that indicates the resource property and the property value specified in the query parameter and that references the resource in the resource store;
• in response to determining that the index store does not comprise the index document that indicates the resource property and the corresponding property value specified in the query parameter;
• determining an inability to identify the index document that references the resource in the resource store;
• and
• presenting a notification indicating the inability to identify the resource in the resource store that is associated with the resource property and the corresponding property value specified in the query parameter.

A computer program product for indexing heterogeneous resources, the computer program product comprising:

• a non-transitory computer usable storage medium having computer usable program code embodied therewith, the computer usable program code configured to:
• receive a notification indicating that a resource is stored in a resource store;
• determine a resource category for the resource based, at least in part, on metadata of the resource, in response to the computer usable program code receiving the notification indicating that the resource is stored in the resource store;
• determine whether a resource index schema for the resource can be identified based on the resource category for the resource;
• in response to determining that the resource index schema for the resource category can be identified,
• identify the resource index schema for the resource, wherein the resource index schema indicates a resource property of the resource;
• determine, from the metadata of the resource, a property value for the resource property indicated in the resource index schema for the resource;
• create a first index document that has a format independent of a format of the resource, that indicates the resource property and the property value, and that references the resource in the resource store of heterogeneous native format resources;
• in response to determining that the resource index schema for the resource cannot be identified,
• identify a generic schema that indicates at least one property related to storing the resource in a resource store;
• identify a property value of the resource for the at least one property indicated in the generic schema;
• create a second index document that has a format independent of a format of the resource, that indicates the at least one property identified in the generic schema and the corresponding property value, and that references the resource in the resource store of heterogeneous native format resources;
• and
• store the first index document or the second index document in an index store that comprises a plurality of index documents, wherein the first index document, the second index document, and the plurality of index documents have common formatting.

An apparatus comprising:

• a processor;
• a network interface coupled with the processor, the network interface operable to receive a notification indicating that a resource is stored in a resource store;
• the resource store for storing heterogeneous native format resources;
• an index store comprising a plurality of index documents with common formatting;
• and
• a resource-indexing unit operable to
• determine a resource category for the resource based, at least in part, on metadata of the resource, in response to the network interface receiving the notification indicating that the resource is stored in the resource store;
• determine whether a resource index schema for the resource can be identified based on the resource category for the resource;
• in response to the resource-indexing unit determining that the resource index schema for the resource category can be identified,
• identify the resource index schema for the resource, wherein the resource index schema indicates a resource property of the resource;
• determine, from the metadata of the resource, a property value for the resource property indicated in the resource index schema for the resource;
• create a first index document that has a format independent of a format of the resource, that indicates the resource property and the property value, and that references the resource in the resource store of heterogeneous native format resources;
• in response to the resource-indexing unit determining that the resource index schema for the resource cannot be identified,
• identify a generic schema that indicates at least one property related to storing the resource in a resource store;
• identify a property value of the resource for the at least one property indicated in the generic schema;
• create a second index document that has a format independent of a format of the resource, that indicates the at least one property identified in generic schema and the corresponding property value, and that references the resource in the resource store of heterogeneous native format resources;
• and
• store the first index document and the second index document in an index store that comprises the plurality of index documents, wherein the first index document, the second index document, and the plurality of index documents have common formatting.