D-Net

@namespace("eu.dnetlib.iis.ingest.pmc.metadata.schemas")

protocol IIS{

    import idl "ReferenceBasicMetadata.avdl";

    record ReferenceMetadata {

        ReferenceBasicMetadata basicMetadata;

//      reference position in bibliography, starting with '1'

        union { null , int } position = null;

//      raw citation string held here just in case - maybe we will be able to use it

//      instead of basicMetadata if the latter one turns out to be of a low quality

        union { null , string } text = null;

    }

}

@namespace("eu.dnetlib.iis.ingest.pmc.metadata.schemas")

protocol IIS{

    record Range {

        union { null , string } start = null;

        union { null , string } end = null;

    }

    record ReferenceBasicMetadata {

        union { null , string } title = null;

//      author names (a single string corresponds to a single author)

        union { null , array<string> } authors = null;

        union { null , Range } pages = null;

//      the name of a journal, a book or anything that the article comes from

        union { null , string } source = null;

        union { null , string } volume = null;

        union { null , string } year = null;

        union { null , string } issue = null;

        map<string> externalIds;

    }

}

@namespace("eu.dnetlib.iis.ingest.pmc.metadata.schemas")

protocol IIS{

	import idl "ReferenceBasicMetadata.avdl";

	import idl "ReferenceMetadata.avdl";

    record ExtractedDocumentMetadata {

//      OpenAIRE identifier of the document

        string id;

//      Pubmed identifier of the document

        union { null , string } pmid = null;

//		pubmed entity type        

        string entityType;

//      name of journal in which the article is published

        union { null , string } journal = null;

//      references extracted from pfd document

        union { null , array<ReferenceMetadata> } references = null;

//      page range in which the article is published

        union { null , Range } pages = null;

    }

}