45 lines
1.9 KiB
Markdown
45 lines
1.9 KiB
Markdown
# Searching entities
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This is a guide on how to search for specific entities using the OpenAIRE Graph API.
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## Endpoints
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Currently, the Graph API supports the following entity types:
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* Research products - endpoint: [`GET /researchProducts`](https://api-beta.openaire.eu/graph/researchProducts)
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* Organizations - endpoint: [`GET /organizations`](https://api-beta.openaire.eu/graph/organizations)
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* Data sources - endpoint: [`GET /dataSources`](https://api-beta.openaire.eu/graph/dataSources)
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* Projects - endpoint: [`GET /projects`](https://api-beta.openaire.eu/graph/projects)
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Each of these endpoints can be used to list all entities of the corresponding type.
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Listing such entities can be more useful when using the [filtering](./filtering-search-results.md),
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[sorting](./sorting-and-paging.md#sorting), and [paging](./sorting-and-paging.md#paging) capabilities of the Graph API.
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## Response
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The response of the aforementioned endpoints is an object of the following type:
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```json
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{
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header: {
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numFound: 36818386,
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maxScore: 1,
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queryTime: 21,
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page: 1,
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pageSize: 10
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},
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results: [
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...
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]
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}
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```
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It contains a `header` object with the following fields:
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- `numFound`: the total number of entities found
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- `maxScore`: the maximum relevance score of the search results
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- `queryTime`: the time in milliseconds that the search took
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- `page`: the current page of the search results (when using basic pagination)
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- `pageSize`: the number of entities per page
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- `nextCursor`: the next page cursor (when using cursor-based pagination, see: [paging](./sorting-and-paging.md#paging)
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Finally, the `results` field contains an array of entities of the corresponding type (i.e., [Research product](../../../data-model/entities/research-product.md), [Organization](../../../data-model/entities/organization.md), [Data Source](../../../data-model/entities/data-source.md), or [Project](../../../data-model/entities/project.md)).
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