Github user huawei-flink commented on a diff in the pull request: https://github.com/apache/flink/pull/3547#discussion_r106361152 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/AggregateUtil.scala --- @@ -19,33 +19,124 @@ package org.apache.flink.table.runtime.aggregate import java.util -import org.apache.calcite.rel.`type`._ +import scala.collection.JavaConversions.asScalaBuffer +import scala.collection.mutable.ArrayBuffer + +import org.apache.calcite.rel.RelNode +import org.apache.calcite.rel.`type`.RelDataType import org.apache.calcite.rel.core.AggregateCall +import org.apache.calcite.rex.RexInputRef +import org.apache.calcite.rex.RexLiteral +import org.apache.calcite.rex.RexWindowBound +import org.apache.calcite.sql.SqlAggFunction +import org.apache.calcite.sql.SqlKind import org.apache.calcite.sql.`type`.SqlTypeName -import org.apache.calcite.sql.`type`.SqlTypeName._ -import org.apache.calcite.sql.fun._ -import org.apache.calcite.sql.{SqlAggFunction, SqlKind} -import org.apache.flink.streaming.api.functions.ProcessFunction +import org.apache.calcite.sql.`type`.SqlTypeName.BIGINT +import org.apache.calcite.sql.`type`.SqlTypeName.BOOLEAN +import org.apache.calcite.sql.`type`.SqlTypeName.DECIMAL +import org.apache.calcite.sql.`type`.SqlTypeName.DOUBLE +import org.apache.calcite.sql.`type`.SqlTypeName.FLOAT +import org.apache.calcite.sql.`type`.SqlTypeName.INTEGER +import org.apache.calcite.sql.`type`.SqlTypeName.SMALLINT +import org.apache.calcite.sql.`type`.SqlTypeName.TINYINT --- End diff -- I see your point, although I thought that wildcard import was not a best practice. It seems that the java and scala implementation are following different conventions. I have no problems with it in principle.
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