[GitHub] [calcite] yanlin-Lynn commented on a change in pull request #1519: [CALCITE-3424] AssertionError thrown for user-defined table function with array argument

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yanlin-Lynn commented on a change in pull request #1519: [CALCITE-3424] AssertionError thrown for user-defined table function with array argument
URL: https://github.com/apache/calcite/pull/1519#discussion_r336440971
 
 

 ##########
 File path: core/src/main/java/org/apache/calcite/jdbc/JavaTypeFactoryImpl.java
 ##########
 @@ -251,13 +253,25 @@ public static RelDataType toSql(final RelDataTypeFactory typeFactory,
               type.getFieldNames()),
           type.isNullable());
     } else if (type instanceof JavaType) {
-      return typeFactory.createTypeWithNullability(
-          typeFactory.createSqlType(type.getSqlTypeName()),
-          type.isNullable());
+      Class javaClass = ((JavaType) type).getJavaClass();
+      final RelDataType nonNullType;
+      if (javaClass.isArray()) {
 
 Review comment:
   what about map type?

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