JSON Schema creator and validator

doc/release-notes/9464-json-validation.md

@@ -0,0 +1,3 @@
+Functionality has been added to help validate dataset JSON prior to dataset creation. There are two new API endpoints in this release. The first takes in a collection alias and returns a custom dataset schema based on the required fields of the collection. The second takes in a collection alias and a dataset JSON file and does an automated validation of the JSON file against the custom schema for the collection. In this release funtionality is limited to json format validation and validating required elements. Future releases will address field types, controlled vocabulary, etc. (Issue #9464 and #9465)
+
+For documentation see the API changelog: http://preview.guides.gdcc.io/en/develop/api/changelog.html

doc/sphinx-guides/source/_static/api/dataset-schema.json

@@ -0,0 +1,122 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "$defs": {
+    "field": {
+        "type": "object",
+        "required": ["typeClass", "multiple", "typeName"],
+        "properties": {
+            "value": {
+                "anyOf": [
+                    {
+                        "type": "array"
+                    },
+                    {
+                        "type": "string"
+                    },
+                    {
+                        "$ref": "#/$defs/field"
+                    }
+                ]
+            },
+            "typeClass": {
+                "type": "string"
+            },
+            "multiple": {
+                "type": "boolean"
+            },
+            "typeName": {
+                "type": "string"
+            }
+        }
+    }
+},
+"type": "object",
+"properties": {
+    "datasetVersion": {
+        "type": "object",
+        "properties": {
+           "license": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string"
+                    },
+                    "uri": {
+                        "type": "string",
+                        "format": "uri"
+                   }
+                },
+                "required": ["name", "uri"]
+            },
+            "metadataBlocks": {
+                "type": "object",
+               "properties": {
+                           "citation": {
+                            "type": "object",
+                            "properties": {
+                                "fields": {
+                                    "type": "array",
+                                    "items": {
+                                        "$ref": "#/$defs/field"
+                                    },
+                                    "minItems": 5,
+                                    "allOf": [
+                                        {
+                                            "contains": {
+                                                "properties": {
+                                                    "typeName": {
+                                                        "const": "title"
+                                                    }
+                                                }
+                                            }
+                                        },
+                                        {
+                                            "contains": {
+                                                "properties": {
+                                                    "typeName": {
+                                                        "const": "author"
+                                                    }
+                                                }
+                                            }
+                                        },
+                                        {
+                                            "contains": {
+                                                "properties": {
+                                                    "typeName": {
+                                                        "const": "datasetContact"
+                                                    }
+                                                }
+                                            }
+                                        },
+                                        {
+                                            "contains": {
+                                                "properties": {
+                                                    "typeName": {
+                                                        "const": "dsDescription"
+                                                    }
+                                                }
+                                            }
+                                        },
+                                        {
+                                            "contains": {
+                                                "properties": {
+                                                    "typeName": {
+                                                        "const": "subject"
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    ]
+                                }
+                            },
+                            "required": ["fields"]
+                        }
+                     },
+                    "required": ["citation"]
+                }
+            },
+            "required": ["metadataBlocks"]
+        }
+    },
+    "required": ["datasetVersion"]
+}

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

@@ -5,15 +5,20 @@ API Changelog
     :local:
     :depth: 1
 
-6.1
----
+v6.1
+----
+
+New
+~~~
+- **/api/dataverses/{id}/datasetSchema**: See :ref:`get-dataset-json-schema`.
+- **/api/dataverses/{id}/validateDatasetJson**: See :ref:`validate-dataset-json`.
 
 Changes
 ~~~~~~~
 - **/api/datasets/{id}/versions/{versionId}/citation**: This endpoint now accepts a new boolean optional query parameter "includeDeaccessioned", which, if enabled, causes the endpoint to consider deaccessioned versions when searching for versions to obtain the citation. See :ref:`get-citation`.
 
-6.0
----
+v6.0
+----
 
 Changes
 ~~~~~~~

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

@@ -505,6 +505,56 @@ The fully expanded example above (without environment variables) looks like this
 
 .. note:: Previous endpoints ``$SERVER/api/dataverses/$id/metadatablocks/:isRoot`` and ``POST https://$SERVER/api/dataverses/$id/metadatablocks/:isRoot?key=$apiKey`` are deprecated, but supported.
 
+.. _get-dataset-json-schema:
+
+Retrieve a Dataset JSON Schema for a Collection
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Retrieves a JSON schema customized for a given collection in order to validate a dataset JSON file prior to creating the dataset. This
+first version of the schema only includes required elements and fields. In the future we plan to improve the schema by adding controlled
+vocabulary and more robust dataset field format testing:
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export ID=root
+
+  curl -H "X-Dataverse-key:$API_TOKEN" "$SERVER_URL/api/dataverses/$ID/datasetSchema"
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl -H "X-Dataverse-key:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" "https://demo.dataverse.org/api/dataverses/root/datasetSchema"
+
+Note: you must have "Add Dataset" permission in the given collection to invoke this endpoint.
+
+While it is recommended to download a copy of the JSON Schema from the collection (as above) to account for any fields that have been marked as required, you can also download a minimal :download:`dataset-schema.json <../_static/api/dataset-schema.json>` to get a sense of the schema when no customizations have been made.
+
+.. _validate-dataset-json:
+
+Validate Dataset JSON File for a Collection
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Validates a dataset JSON file customized for a given collection prior to creating the dataset. The validation only tests for json formatting
+and the presence of required elements:
+
+.. code-block:: bash
+
+  export API_TOKEN=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+  export SERVER_URL=https://demo.dataverse.org
+  export ID=root
+
+  curl -H "X-Dataverse-key:$API_TOKEN" -X POST "$SERVER_URL/api/dataverses/$ID/validateDatasetJson" -H 'Content-type:application/json' --upload-file dataset.json
+
+The fully expanded example above (without environment variables) looks like this:
+
+.. code-block:: bash
+
+  curl -H "X-Dataverse-key:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" -X POST "https://demo.dataverse.org/api/dataverses/root/validateDatasetJson" -H 'Content-type:application/json' --upload-file dataset.json
+
+Note: you must have "Add Dataset" permission in the given collection to invoke this endpoint.
 
 .. _create-dataset-command: 
 

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

@@ -30,8 +30,9 @@
     @NamedQuery(name = "DataverseFieldTypeInputLevel.findByDataverseIdDatasetFieldTypeId",
             query = "select f from DataverseFieldTypeInputLevel f where f.dataverse.id = :dataverseId and f.datasetFieldType.id = :datasetFieldTypeId"),
     @NamedQuery(name = "DataverseFieldTypeInputLevel.findByDataverseIdAndDatasetFieldTypeIdList",
-            query = "select f from DataverseFieldTypeInputLevel f where f.dataverse.id = :dataverseId and f.datasetFieldType.id in :datasetFieldIdList")
-
+            query = "select f from DataverseFieldTypeInputLevel f where f.dataverse.id = :dataverseId and f.datasetFieldType.id in :datasetFieldIdList"),
+    @NamedQuery(name = "DataverseFieldTypeInputLevel.findRequiredByDataverseId",
+            query = "select f from DataverseFieldTypeInputLevel f where f.dataverse.id = :dataverseId and f.required = 'true' ")
 })
 @Table(name="DataverseFieldTypeInputLevel"
         ,  uniqueConstraints={

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

@@ -88,6 +88,16 @@ public DataverseFieldTypeInputLevel findByDataverseIdDatasetFieldTypeId(Long dat
             return null;
         }         
     }
+
+    public List<DataverseFieldTypeInputLevel> findRequiredByDataverseId(Long dataverseId) {
+        Query query = em.createNamedQuery("DataverseFieldTypeInputLevel.findRequiredByDataverseId", DataverseFieldTypeInputLevel.class);
+        query.setParameter("dataverseId", dataverseId);
+        try{
+            return query.getResultList();
+        } catch ( NoResultException nre ) {
+            return null;
+        }         
+    }
 
     public void delete(DataverseFieldTypeInputLevel dataverseFieldTypeInputLevel) {
         em.remove(em.merge(dataverseFieldTypeInputLevel));