Added node to update datacite

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/datacite/SparkDownloadUpdateDatacite.scala

@@ -0,0 +1,53 @@
+package eu.dnetlib.dhp.actionmanager.datacite
+
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser
+import eu.dnetlib.dhp.schema.oaf.{Oaf, Result}
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.LocalFileSystem
+import org.apache.hadoop.hdfs.DistributedFileSystem
+import org.apache.spark.SparkConf
+import org.apache.spark.sql.{Encoder, Encoders, SparkSession}
+import org.apache.spark.sql.functions.max
+import org.slf4j.{Logger, LoggerFactory}
+
+import java.text.SimpleDateFormat
+import java.util.{Date, Locale}
+import scala.io.Source
+
+object SparkDownloadUpdateDatacite {
+  val log: Logger = LoggerFactory.getLogger(getClass)
+
+  def main(args: Array[String]): Unit = {
+
+    val conf = new SparkConf
+    val parser = new ArgumentApplicationParser(Source.fromInputStream(getClass.getResourceAsStream("/eu/dnetlib/dhp/actionmanager/datacite/generate_dataset_params.json")).mkString)
+    parser.parseArgument(args)
+    val master = parser.get("master")
+    val sourcePath = parser.get("sourcePath")
+    val workingPath = parser.get("workingPath")
+
+    val hdfsuri = parser.get("namenode")
+    log.info(s"namenode is $hdfsuri")
+
+
+    val spark: SparkSession = SparkSession.builder().config(conf)
+      .appName(getClass.getSimpleName)
+      .master(master)
+      .getOrCreate()
+
+    implicit val oafEncoder: Encoder[Oaf] = Encoders.kryo[Oaf]
+    implicit val resEncoder: Encoder[Result] = Encoders.kryo[Result]
+
+    import spark.implicits._
+
+
+    val maxDate:String = spark.read.load(workingPath).as[Oaf].filter(s => s.isInstanceOf[Result]).map(r => r.asInstanceOf[Result].getDateofcollection).select(max("value")).first().getString(0)
+    val ISO8601FORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.US)
+    val string_to_date =ISO8601FORMAT.parse(maxDate)
+    val ts = string_to_date.getTime
+
+
+  }
+
+}