[
https://issues.apache.org/jira/browse/CASSANDRA-17913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Benjamin Lerer updated CASSANDRA-17913:
---------------------------------------
Description:
The following test fails caused by the fact we make reversed a type that wraps
the underline type
{code:java}
@Test
public void testMapsReversed() throws Throwable
{
createTable("CREATE TABLE %s (" +
" k int, " +
" c frozen<map<text, int>>, " +
" v int, " +
" PRIMARY KEY(k, c)" +
") WITH CLUSTERING ORDER BY (c DESC)");
execute("SELECT c['testing'] FROM %s");
}
{code}
With the error
{code:java}
org.apache.cassandra.exceptions.InvalidRequestException: Invalid element
selection: c is of type frozen<map<text, int>> is not a collection
{code}
When you look in a debugger you see that the real type is
ReversedType(MapType(…)), so the current checks fail.
{+}Additional information for newcomers{+}:
* The problem impact element selection as well as range selection that where
introduced in CASSANDRA-7396 as part of 4.0. So the patch will need to be done
for 4.0.
* The checks that needs to be modified is in
{{Selectable.WithElementSelection}} and {{Selectable.WithSliceSelection}}
* The unit tests should be added to {{CollectionsTest}}
was:
The following test fails caused by the fact we make reversed a type that wraps
the underline type
{code:java}
@Test
public void testMapsReversed() throws Throwable
{
createTable("CREATE TABLE %s (" +
" k int, " +
" c frozen<map<text, int>>, " +
" v int, " +
" PRIMARY KEY(k, c)" +
") WITH CLUSTERING ORDER BY (c DESC)");
execute("SELECT c['testing'] FROM %s");
}
{code}
With the error
{code:java}
org.apache.cassandra.exceptions.InvalidRequestException: Invalid element
selection: c is of type frozen<map<text, int>> is not a collection
{code}
When you look in a debugger you see that the real type is
ReversedType(MapType(…)), so the current checks fail.
{+}Additional information for newcomers{+}:
* The problem impact element selection as well as range selection that where
introduced in CASSANDRA-7396 as part of 4.0. So the patch will need to be done
for 4.0.
* The checks that needs to be modified is in
{{Selectable.WithElementSelection}} and {{Selectable.WithSliceSelection}}
> Nested selection of reversed collections fails
> ----------------------------------------------
>
> Key: CASSANDRA-17913
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17913
> Project: Cassandra
> Issue Type: Bug
> Components: Consistency/Coordination, CQL/Semantics, Legacy/Local
> Write-Read Paths
> Reporter: David Capwell
> Priority: Normal
> Fix For: 4.0.x, 4.1.x
>
>
> The following test fails caused by the fact we make reversed a type that
> wraps the underline type
> {code:java}
> @Test
> public void testMapsReversed() throws Throwable
> {
> createTable("CREATE TABLE %s (" +
> " k int, " +
> " c frozen<map<text, int>>, " +
> " v int, " +
> " PRIMARY KEY(k, c)" +
> ") WITH CLUSTERING ORDER BY (c DESC)");
> execute("SELECT c['testing'] FROM %s");
> }
> {code}
> With the error
> {code:java}
> org.apache.cassandra.exceptions.InvalidRequestException: Invalid element
> selection: c is of type frozen<map<text, int>> is not a collection
> {code}
> When you look in a debugger you see that the real type is
> ReversedType(MapType(…)), so the current checks fail.
> {+}Additional information for newcomers{+}:
> * The problem impact element selection as well as range selection that where
> introduced in CASSANDRA-7396 as part of 4.0. So the patch will need to be
> done for 4.0.
> * The checks that needs to be modified is in
> {{Selectable.WithElementSelection}} and {{Selectable.WithSliceSelection}}
> * The unit tests should be added to {{CollectionsTest}}
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