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package mobvista.dmp.utils.clickhouse
/**
* @package: mobvista.dmp.utils.clickhouse
* @author: wangjf
* @date: 2019-07-16
* @time: 18:28
* @email: jinfeng.wang@mobvista.com
* @phone: 152-1062-7698
*/
object ClickHouseResultSetExt {
implicit class ResultSetExt(rs: java.sql.ResultSet) {
def map[T](delegate: (java.sql.ResultSet) => T): Seq[T] = {
var results = List[T]()
while (rs.next()) {
results = delegate(rs) :: results
}
results
}
def toTab = {
// rs meta: (colId, name, type)
val header = getMeta.map(v => s"${v._2}").mkString("\t")
val body = getData.map { row =>
row.map(v => s"$v").mkString("\t")
}.mkString("\n")
val table = List(header, body).mkString("\n")
println(s"%table $table")
}
def getMeta = {
1 to rs.getMetaData.getColumnCount map { i =>
(i, rs.getMetaData.getColumnName(i), rs.getMetaData.getColumnTypeName(i))
}
}
def getData = {
val meta = getMeta
val results = scala.collection.mutable.MutableList[Seq[AnyRef]]()
while (rs.next()) {
val row = meta.map(i => rs.getObject(i._1))
results += row
}
results.toList
}
}
}