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-- 4. Dataset table/view and Dataset related tables/views
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-- Dataset temporary table supporting updates
DROP TABLE IF EXISTS ${hive_db_name}.dataset_tmp;
CREATE TABLE ${hive_db_name}.dataset_tmp (id STRING, title STRING, publisher STRING, journal STRING, date STRING, year STRING, bestlicence STRING, embargo_end_date STRING, delayed BOOLEAN,   authors INT,   source STRING,   abstract BOOLEAN,   type STRING ) clustered by (id) into 100 buckets stored as orc tblproperties('transactional'='true');

INSERT INTO ${hive_db_name}.dataset_tmp SELECT substr(d.id, 4) as id, d.title[0].value as title, d.publisher.value as publisher, cast(null as string) as journal, d.dateofacceptance.value as date,
date_format(d.dateofacceptance.value,'yyyy') as year, d.bestaccessright.classname as bestlicence, d.embargoenddate.value as embargo_end_date, false as delayed, size(d.author) as authors,
concat_ws ('\u003B',d.source.value) as source,
case when size(d.description) > 0 then true else false end as abstract, 'dataset' as type from ${hive_source_db_name}.dataset d where d.datainfo.deletedbyinference=false;


-- Dataset_citations
CREATE TABLE ${hive_db_name}.dataset_citations as select substr(d.id, 4) as id, xpath_string(citation.value, "//citation/id[@type='openaire']/@value") as result from ${hive_source_db_name}.dataset d  lateral view explode(d.extrainfo) citations as citation where xpath_string(citation.value, "//citation/id[@type='openaire']/@value") !="";

CREATE TABLE ${hive_db_name}.dataset_classifications AS SELECT substr(p.id, 4) as id, instancetype.classname as type from ${hive_source_db_name}.dataset p LATERAL VIEW explode(p.instance.instancetype) instances as instancetype;
CREATE TABLE ${hive_db_name}.dataset_concepts AS SELECT substr(p.id, 4) as id, contexts.context.id as concept from ${hive_source_db_name}.dataset p LATERAL VIEW explode(p.context) contexts as context;
CREATE TABLE ${hive_db_name}.dataset_datasources as SELECT p.id, case when d.id is null then 'other' else p.datasource end as datasource FROM (SELECT  substr(p.id, 4) as id, substr(instances.instance.hostedby.key, 4) as datasource from ${hive_source_db_name}.dataset p lateral view explode(p.instance) instances as instance) p LEFT OUTER JOIN (SELECT substr(d.id, 4) id from ${hive_source_db_name}.datasource d WHERE d.datainfo.deletedbyinference=false) d on p.datasource = d.id;
CREATE TABLE ${hive_db_name}.dataset_languages AS SELECT substr(p.id, 4) as id, p.language.classname as language from ${hive_source_db_name}.dataset p;
CREATE TABLE ${hive_db_name}.dataset_oids AS SELECT substr(p.id, 4) as id, oids.ids as oid from ${hive_source_db_name}.dataset p LATERAL VIEW explode(p.originalid) oids as ids;
CREATE TABLE ${hive_db_name}.dataset_pids AS SELECT substr(p.id, 4) as id, ppid.qualifier.classname as type, ppid.value as pid from ${hive_source_db_name}.dataset p lateral view explode(p.pid) pids as ppid;
CREATE TABLE ${hive_db_name}.dataset_topics AS SELECT substr(p.id, 4) as id, subjects.subject.qualifier.classname as type, subjects.subject.value as topic from ${hive_source_db_name}.dataset p lateral view explode(p.subject) subjects as subject;