jin xing created CALCITE-3197:
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Summary: Convert data of Timestamp/Time/Date as original form when
enumerating from ArrayTable
Key: CALCITE-3197
URL: https://issues.apache.org/jira/browse/CALCITE-3197
Project: Calcite
Issue Type: Bug
Components: core
Reporter: jin xing
In current implementation ColumnLoader, data of
{{Rep.JAVA_SQL_TIMESTAMP/Rep.JAVA_SQL_TIME/Rep.JAVA_SQL_DATE}} are converted as
numeric during loading.
https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/adapter/clone/ColumnLoader.java#L234
But current code seems forgot to revert the data back to original form when
enumerating.
As a result, below test is failing now
{code:java}
// MaterializationTest.java
@Test public void testTimestampType() {
String sql = "select \"eventid\", \"ts\"\n"
+ "from \"events\"\n"
+ "where \"eventid\" > 5";
checkMaterialize(sql, sql);
}{code}
For type of {{Rep.JAVA_SQL_TIMESTAMP/Rep.JAVA_SQL_TIME/Rep.JAVA_SQL_DATE}},
cursor acesses {{TimestampAccessor/TimeAccessor/DateAccessor}}, which expect
column value as {{Timestamp/Time/Date}}.
It make sense to 'unwrap' the data as original form when enumerating from
{{ArrayTable}}.
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