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https://issues.apache.org/jira/browse/DRILL-7143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16811880#comment-16811880
 ] 

ASF GitHub Bot commented on DRILL-7143:
---------------------------------------

arina-ielchiieva commented on pull request #1726: DRILL-7143: Support default 
value for empty columns
URL: https://github.com/apache/drill/pull/1726#discussion_r272834240
 
 

 ##########
 File path: common/src/main/java/org/apache/drill/common/types/BooleanType.java
 ##########
 @@ -15,45 +15,39 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.drill.exec.expr;
+package org.apache.drill.common.types;
 
-import org.apache.drill.common.map.CaseInsensitiveMap;
-
-import java.util.Arrays;
-import java.util.List;
 import java.util.Map;
 
+import org.apache.drill.common.map.CaseInsensitiveMap;
+
 /**
  * Enum that contains two boolean types: TRUE and FALSE.
  * Each has numeric representation and list of allowed literals.
  * List of literals if formed according to
  * {@link <a 
href="https://www.postgresql.org/docs/9.6/static/datatype-boolean.html";>Postgre 
Documentation</a>}
  */
 public enum BooleanType {
-  TRUE(1, Arrays.asList("t", "true", "y", "yes", "on", "1")),
-  FALSE(0, Arrays.asList("f", "false", "n", "no", "off", "0"));
+  TRUE(1, new String [] {"true", "1", "t", "y", "yes", "on",}),
+  FALSE(0, new String [] {"false", "0", "f", "n", "no", "off"});
 
   private final int numericValue;
-  private final List<String> literals;
+  private final String[] literals;
 
-  BooleanType(int numericValue, List<String> literals) {
+  BooleanType(int numericValue, String literals[]) {
 
 Review comment:
   Please fix array declaration.
 
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> Enforce column-level constraints when using a schema
> ----------------------------------------------------
>
>                 Key: DRILL-7143
>                 URL: https://issues.apache.org/jira/browse/DRILL-7143
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.16.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Major
>             Fix For: 1.16.0
>
>
> The recently added schema framework enforces schema constraints at the table 
> level. We now wish to add additional constraints at the column level.
> * If a column is marked as "strict", then the reader will use the exact type 
> and mode from the column schema, or fail if it is not possible to do so.
> * If a column is marked as required, and provides a default value, then that 
> value is used instead of 0 if a row is missing a value for that column.
> This PR may also contain other fixes the the base functional revealed through 
> additional testing.



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