Dataset files API extension for file display data with pagination and sorting

doc/release-notes/9692-files-api-extension.md

@@ -0,0 +1,7 @@
+The following API endpoints have been added:
+
+- /api/files/{id}/downloadCount
+- /api/files/{id}/dataTables
+- /access/datafile/{id}/userPermissions
+
+The getVersionFiles endpoint (/api/datasets/{id}/versions/{versionId}/files) has been extended to support pagination and ordering

doc/sphinx-guides/source/api/dataaccess.rst

@@ -403,3 +403,19 @@ This method returns a list of Authenticated Users who have requested access to t
 A curl example using an ``id``::
 
     curl -H "X-Dataverse-key:$API_TOKEN" -X GET http://$SERVER/api/access/datafile/{id}/listRequests
+
+Get User Permissions on a File:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``/api/access/datafile/{id}/userPermissions``
+
+This method returns the permissions that the calling user has on a particular file.
+
+In particular, the user permissions that this method checks, returned as booleans, are the following:
+
+* Can download the file
+* Can edit the file owner dataset
+
+A curl example using an ``id``::
+
+    curl -H "X-Dataverse-key:$API_TOKEN" -X GET "http://$SERVER/api/access/datafile/{id}/userPermissions"

doc/sphinx-guides/source/api/metrics.rst

@@ -163,3 +163,10 @@ The following table lists the available metrics endpoints (not including the Mak
     /api/info/metrics/uniquefiledownloads/toMonth/{yyyy-MM},"count by id, pid","json, csv",collection subtree,published,y,cumulative up to month specified,unique download counts per file id to the specified month. PIDs are also included in output if they exist
     /api/info/metrics/tree,"id, ownerId, alias, depth, name, children",json,collection subtree,published,y,"tree of dataverses starting at the root or a specified parentAlias with their id, owner id, alias, name, a computed depth, and array of children dataverses","underlying code can also include draft dataverses, this is not currently accessible via api, depth starts at 0"
     /api/info/metrics/tree/toMonth/{yyyy-MM},"id, ownerId, alias, depth, name, children",json,collection subtree,published,y,"tree of dataverses in existence as of specified date starting at the root or a specified parentAlias with their id, owner id, alias, name, a computed depth, and array of children dataverses","underlying code can also include draft dataverses, this is not currently accessible via api, depth starts at 0"
+
+Related API Endpoints
+---------------------
+
+The following endpoints are not under the metrics namespace but also return counts:
+
+- :ref:`file-download-count` 

doc/sphinx-guides/source/api/native-api.rst

@@ -958,6 +958,29 @@ The fully expanded example above (without environment variables) looks like this
 
   curl "https://demo.dataverse.org/api/datasets/24/versions/1.0/files"
 
+This endpoint supports optional pagination, through the ``limit`` and ``offset`` query params:
+
+.. code-block:: bash
+
+  curl "https://demo.dataverse.org/api/datasets/24/versions/1.0/files?limit=10&offset=20"
+
+Ordering criteria for sorting the results is also optionally supported. In particular, by the following possible values:
+
+* ``NameAZ`` (Default)
+* ``NameZA``
+* ``Newest``
+* ``Oldest``
+* ``Size``
+* ``Type``
+
+Please note that these values are case sensitive and must be correctly typed for the endpoint to recognize them.
+
+Usage example:
+
+.. code-block:: bash
+
+  curl "https://demo.dataverse.org/api/datasets/24/versions/1.0/files?orderCriteria=Newest"
+
 View Dataset Files and Folders as a Directory Index
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -2702,6 +2725,85 @@ The fully expanded example above (without environment variables) looks like this
 
 Note: The ``id`` returned in the json response is the id of the file metadata version.
 
+Getting File Data Tables
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+This endpoint is oriented toward tabular files and provides a JSON representation of the file data tables for an existing tabular file. ``ID`` is the database id of the file to get the data tables from or ``PERSISTENT_ID`` is the persistent id (DOI or Handle) of the file.
+
+A curl example using an ``ID``
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export ID=24
+
+  curl $SERVER_URL/api/files/$ID/dataTables
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl https://demo.dataverse.org/api/files/24/dataTables
+
+A curl example using a ``PERSISTENT_ID``
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export PERSISTENT_ID=doi:10.5072/FK2/AAA000
+
+  curl "$SERVER_URL/api/files/:persistentId/dataTables?persistentId=$PERSISTENT_ID"
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl "https://demo.dataverse.org/api/files/:persistentId/dataTables?persistentId=doi:10.5072/FK2/AAA000"
+
+Note that if the requested file is not tabular, the endpoint will return an error.
+
+.. _file-download-count:
+
+Getting File Download Count
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Provides the download count for a particular file, where ``ID`` is the database id of the file to get the download count from or ``PERSISTENT_ID`` is the persistent id (DOI or Handle) of the file.
+
+A curl example using an ``ID``
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export ID=24
+
+  curl "$SERVER_URL/api/files/$ID/downloadCount"
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl "https://demo.dataverse.org/api/files/24/downloadCount"
+
+A curl example using a ``PERSISTENT_ID``
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export PERSISTENT_ID=doi:10.5072/FK2/AAA000
+
+  curl "$SERVER_URL/api/files/:persistentId/downloadCount?persistentId=$PERSISTENT_ID"
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl "https://demo.dataverse.org/api/files/:persistentId/downloadCount?persistentId=doi:10.5072/FK2/AAA000"
+
+If you are interested in download counts for multiple files, see :doc:`/api/metrics`.
 
 Updating File Metadata
 ~~~~~~~~~~~~~~~~~~~~~~

src/main/java/edu/harvard/iq/dataverse/DatasetVersionServiceBean.java

@@ -48,7 +48,23 @@ public class DatasetVersionServiceBean implements java.io.Serializable {
     private static final Logger logger = Logger.getLogger(DatasetVersionServiceBean.class.getCanonicalName());
 
     private static final SimpleDateFormat logFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH-mm-ss");
-
+
+    private static final String QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_LABEL = "SELECT fm FROM FileMetadata fm"
+            + " WHERE fm.datasetVersion.id=:datasetVersionId"
+            + " ORDER BY fm.label";
+    private static final String QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_DATE = "SELECT fm FROM FileMetadata fm, DvObject dvo"
+            + " WHERE fm.datasetVersion.id = :datasetVersionId"
+            + " AND fm.dataFile.id = dvo.id"
+            + " ORDER BY CASE WHEN dvo.publicationDate IS NOT NULL THEN dvo.publicationDate ELSE dvo.createDate END";
+    private static final String QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_SIZE = "SELECT fm FROM FileMetadata fm, DataFile df"
+            + " WHERE fm.datasetVersion.id = :datasetVersionId"
+            + " AND fm.dataFile.id = df.id"
+            + " ORDER BY df.filesize";
+    private static final String QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_TYPE = "SELECT fm FROM FileMetadata fm, DataFile df"
+            + " WHERE fm.datasetVersion.id = :datasetVersionId"
+            + " AND fm.dataFile.id = df.id"
+            + " ORDER BY df.contentType";
+
     @EJB
     DatasetServiceBean datasetService;
 
@@ -149,7 +165,19 @@ public DatasetVersion getDatasetVersion(){
             return this.datasetVersionForResponse;
         }                
     } // end RetrieveDatasetVersionResponse
-
+
+    /**
+     *  Different criteria to sort the results of FileMetadata queries used in {@link DatasetVersionServiceBean#getFileMetadatas}
+     */
+    public enum FileMetadatasOrderCriteria {
+        NameAZ,
+        NameZA,
+        Newest,
+        Oldest,
+        Size,
+        Type
+    }
+
     public DatasetVersion find(Object pk) {
         return em.find(DatasetVersion.class, pk);
     }
@@ -1224,4 +1252,50 @@ public List<DatasetVersion> getUnarchivedDatasetVersions(){
             return null;
         }
     } // end getUnarchivedDatasetVersions
+
+    /**
+     * Returns a FileMetadata list of files in the specified DatasetVersion
+     *
+     * @param datasetVersion the DatasetVersion to access
+     * @param limit for pagination, can be null
+     * @param offset for pagination, can be null
+     * @param orderCriteria a FileMetadatasOrderCriteria to order the results
+     * @return a FileMetadata list of the specified DatasetVersion
+     */
+    public List<FileMetadata> getFileMetadatas(DatasetVersion datasetVersion, Integer limit, Integer offset, FileMetadatasOrderCriteria orderCriteria) {
+        TypedQuery<FileMetadata> query = em.createQuery(getQueryStringFromFileMetadatasOrderCriteria(orderCriteria), FileMetadata.class)
+                .setParameter("datasetVersionId", datasetVersion.getId());
+        if (limit != null) {
+            query.setMaxResults(limit);
+        }
+        if (offset != null) {
+            query.setFirstResult(offset);
+        }
+        return query.getResultList();
+    }
+
+    private String getQueryStringFromFileMetadatasOrderCriteria(FileMetadatasOrderCriteria orderCriteria) {
+        String queryString;
+        switch (orderCriteria) {
+            case NameZA:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_LABEL + " DESC";
+                break;
+            case Newest:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_DATE + " DESC";
+                break;
+            case Oldest:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_DATE;
+                break;
+            case Size:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_SIZE;
+                break;
+            case Type:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_TYPE;
+                break;
+            default:
+                queryString = QUERY_STR_FIND_ALL_FILE_METADATAS_ORDER_BY_LABEL;
+                break;
+        }
+        return queryString;
+    }
 } // end class

src/main/java/edu/harvard/iq/dataverse/FileDownloadServiceBean.java

@@ -8,6 +8,7 @@
 import edu.harvard.iq.dataverse.authorization.users.User;
 import edu.harvard.iq.dataverse.dataaccess.DataAccess;
 import edu.harvard.iq.dataverse.dataaccess.StorageIO;
+import edu.harvard.iq.dataverse.engine.command.DataverseRequest;
 import edu.harvard.iq.dataverse.engine.command.exception.CommandException;
 import edu.harvard.iq.dataverse.engine.command.impl.CreateGuestbookResponseCommand;
 import edu.harvard.iq.dataverse.engine.command.impl.RequestAccessCommand;
@@ -571,5 +572,15 @@ public String getDirectStorageLocatrion(String storageLocation) {
 
         return null; 
     }
-
+
+    /**
+     *  Checks if the DataverseRequest, which contains IP Groups, has permission to download the file
+     *
+     * @param dataverseRequest the DataverseRequest
+     * @param dataFile the DataFile to check permissions
+     * @return boolean
+     */
+    public boolean canDownloadFile(DataverseRequest dataverseRequest, DataFile dataFile) {
+        return permissionService.requestOn(dataverseRequest, dataFile).has(Permission.DownloadFile);
+    }
 }

src/main/java/edu/harvard/iq/dataverse/api/Access.java

@@ -1945,5 +1945,22 @@ private URI handleCustomZipDownload(User user, String customZipServiceUrl, Strin
             throw new BadRequestException(); 
         }
         return redirectUri;
-    }   
+    }
+
+    @GET
+    @AuthRequired
+    @Path("/datafile/{id}/userPermissions")
+    public Response getUserPermissionsOnFile(@Context ContainerRequestContext crc, @PathParam("id") String dataFileId) {
+        DataFile dataFile;
+        try {
+            dataFile = findDataFileOrDie(dataFileId);
+        } catch (WrappedResponse wr) {
+            return wr.getResponse();
+        }
+        JsonObjectBuilder jsonObjectBuilder = Json.createObjectBuilder();
+        User requestUser = getRequestUser(crc);
+        jsonObjectBuilder.add("canDownloadFile", fileDownloadService.canDownloadFile(createDataverseRequest(requestUser), dataFile));
+        jsonObjectBuilder.add("canEditOwnerDataset", permissionService.userOn(requestUser, dataFile.getOwner()).has(Permission.EditDataset));
+        return ok(jsonObjectBuilder);
+    }
 }

src/main/java/edu/harvard/iq/dataverse/api/Datasets.java

@@ -488,9 +488,17 @@ public Response getVersion(@Context ContainerRequestContext crc, @PathParam("id"
     @GET
     @AuthRequired
     @Path("{id}/versions/{versionId}/files")
-    public Response getVersionFiles(@Context ContainerRequestContext crc, @PathParam("id") String datasetId, @PathParam("versionId") String versionId, @Context UriInfo uriInfo, @Context HttpHeaders headers) {
-        return response( req -> ok( jsonFileMetadatas(
-                         getDatasetVersionOrDie(req, versionId, findDatasetOrDie(datasetId), uriInfo, headers).getFileMetadatas())), getRequestUser(crc));
+    public Response getVersionFiles(@Context ContainerRequestContext crc, @PathParam("id") String datasetId, @PathParam("versionId") String versionId, @QueryParam("limit") Integer limit, @QueryParam("offset") Integer offset, @QueryParam("orderCriteria") String orderCriteria, @Context UriInfo uriInfo, @Context HttpHeaders headers) {
+        return response( req -> {
+            DatasetVersion datasetVersion = getDatasetVersionOrDie(req, versionId, findDatasetOrDie(datasetId), uriInfo, headers);
+            DatasetVersionServiceBean.FileMetadatasOrderCriteria fileMetadatasOrderCriteria;
+            try {
+                fileMetadatasOrderCriteria = orderCriteria != null ? DatasetVersionServiceBean.FileMetadatasOrderCriteria.valueOf(orderCriteria) : DatasetVersionServiceBean.FileMetadatasOrderCriteria.NameAZ;
+            } catch (IllegalArgumentException e) {
+                return error(Response.Status.BAD_REQUEST, "Invalid order criteria: " + orderCriteria);
+            }
+            return ok(jsonFileMetadatas(datasetversionService.getFileMetadatas(datasetVersion, limit, offset, fileMetadatasOrderCriteria)));
+        }, getRequestUser(crc));
     }
 
     @GET