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[SPARK-3988][SQL] add public API for date type
Add json and python api for date type. By using Pickle, `java.sql.Date` was serialized as calendar, and recognized in python as `datetime.datetime`. Author: Daoyuan Wang <daoyuan.wang@intel.com> Closes #2901 from adrian-wang/spark3988 and squashes the following commits: c51a24d [Daoyuan Wang] convert datetime to date 5670626 [Daoyuan Wang] minor line combine f760d8e [Daoyuan Wang] fix indent 444f100 [Daoyuan Wang] fix a typo 1d74448 [Daoyuan Wang] fix scala style 8d7dd22 [Daoyuan Wang] add json and python api for date type
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- python/pyspark/sql.py 39 additions, 18 deletionspython/pyspark/sql.py
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala 1 addition, 0 deletions...scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/types/dataTypes.scala 3 additions, 1 deletion...scala/org/apache/spark/sql/catalyst/types/dataTypes.scala
- sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/ScalaReflectionSuite.scala 7 additions, 2 deletions.../org/apache/spark/sql/catalyst/ScalaReflectionSuite.scala
- sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala 7 additions, 3 deletions...core/src/main/scala/org/apache/spark/sql/SQLContext.scala
- sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala 14 additions, 6 deletions...re/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala
- sql/core/src/test/java/org/apache/spark/sql/api/java/JavaRowSuite.java 8 additions, 3 deletions...test/java/org/apache/spark/sql/api/java/JavaRowSuite.java
- sql/core/src/test/java/org/apache/spark/sql/api/java/JavaSideDataTypeConversionSuite.java 1 addition, 0 deletions...e/spark/sql/api/java/JavaSideDataTypeConversionSuite.java
- sql/core/src/test/scala/org/apache/spark/sql/api/java/ScalaSideDataTypeConversionSuite.scala 1 addition, 0 deletions...spark/sql/api/java/ScalaSideDataTypeConversionSuite.scala
- sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala 6 additions, 3 deletions.../src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
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