include references in schemaorg writer

front-matter · May 1, 2024 · b35e1e8 · b35e1e8
1 parent d9eb38e
commit b35e1e8
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Showing 3 changed files with 29 additions and 5 deletions.
diff --git a/README.md b/README.md
@@ -18,7 +18,7 @@ Commonmeta reads and/or writes these metadata formats:
 | [CrossRef XML](https://www.crossref.org/schema/documentation/unixref1.1/unixref1.1.html) | crossrefxml      | application/vnd.crossref.unixref+xml   | later | later |
 | [Crossref](https://api.crossref.org)                                                             | crossref | application/vnd.crossref+json          | yes     | n/a     |
 | [DataCite](https://api.datacite.org/)                                                            | datacite | application/vnd.datacite.datacite+json | yes     | yes |
-| [Schema.org (in JSON-LD)](http://schema.org/)                                                    | schemaorg    | application/vnd.schemaorg.ld+json      | later     | later   |
+| [Schema.org (in JSON-LD)](http://schema.org/)                                                    | schemaorg    | application/vnd.schemaorg.ld+json      | later     | yes   |
 | [RDF XML](http://www.w3.org/TR/rdf-syntax-grammar/)                                              | rdf       | application/rdf+xml                    | no      | later   |
 | [RDF Turtle](http://www.w3.org/TeamSubmission/turtle/)                                           | turtle        | text/turtle                            | no      | later   |
 | [CSL-JSON](https://citationstyles.org/)                                                     | csl      | application/vnd.citationstyles.csl+json | later | yes   |

diff --git a/cmd/version.go b/cmd/version.go
@@ -15,7 +15,7 @@ var versionCmd = &cobra.Command{
 	Short: "Print the version number of commonmeta",
 	Long:  `All software has versions. This is commonmeta's`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("Commonmeta v0.2.5 -- HEAD")
+		fmt.Println("Commonmeta v0.2.7 -- HEAD")
 	},
 }
 

diff --git a/schemaorg/schemaorg.go b/schemaorg/schemaorg.go
@@ -19,6 +19,7 @@ type SchemaOrg struct {
 	Type                  string        `json:"@type"`
 	AdditionalType        string        `json:"additionalType,omitempty"`
 	Author                []Author      `json:"author,omitempty"`
+	Citation              []Citation    `json:"citation,omitempty"`
 	CodeRepository        string        `json:"codeRepository,omitempty"`
 	DateCreated           string        `json:"dateCreated,omitempty"`
 	DatePublished         string        `json:"datePublished,omitempty"`
@@ -60,6 +61,13 @@ type Author struct {
 	Affiliations []Organization `json:"affiliations,omitempty"`
 }
 
+// Citation represents a citation or reference to another creative work, such as another publication, web page, scholarly article, etc.
+type Citation struct {
+	ID   string `json:"@id,omitempty"`
+	Type string `json:"@type,omitempty"`
+	Name string `json:"name,omitempty"`
+}
+
 // Coderepository
 type CodeRepository struct {
 }
@@ -211,6 +219,20 @@ func Convert(data commonmeta.Data) (SchemaOrg, error) {
 		}
 	}
 
+	if len(data.References) > 0 {
+		for _, reference := range data.References {
+			t := "CreativeWork"
+			if reference.Type == "JournalArticle" {
+				t = "ScholarlyArticle"
+			}
+			schemaorg.Citation = append(schemaorg.Citation, Citation{
+				ID:   reference.ID,
+				Type: t,
+				Name: reference.Title,
+			})
+		}
+	}
+
 	if data.Type == "Dataset" {
 		schemaorg.IncludedInDataCatalog = DataCatalog{
 			ID:   data.Container.Identifier,
@@ -261,9 +283,11 @@ func Convert(data commonmeta.Data) (SchemaOrg, error) {
 		schemaorg.Encoding = mediaObjects
 	}
 
-	schemaorg.Identifier = []string{}
-	for _, identifier := range data.Identifiers {
-		schemaorg.Identifier = append(schemaorg.Identifier, identifier.Identifier)
+	if len(data.Identifiers) > 0 {
+		schemaorg.Identifier = []string{}
+		for _, identifier := range data.Identifiers {
+			schemaorg.Identifier = append(schemaorg.Identifier, identifier.Identifier)
+		}
 	}
 	schemaorg.InLanguage = data.Language
 	if len(data.Subjects) > 0 {