Bruno Dumon created CALCITE-913:
-----------------------------------
Summary: Avatica: transport of array fields fails
Key: CALCITE-913
URL: https://issues.apache.org/jira/browse/CALCITE-913
Project: Calcite
Issue Type: Bug
Reporter: Bruno Dumon
Assignee: Julian Hyde
When using the avatica remote driver, reading a resultset which contains a
non-null ARRAY-type field fails (both in json & protobuf).
This can be reproduced by adding the following test to RemoteMetaTest.java:
{noformat}
@Test public void testArrays() throws SQLException {
try (AvaticaConnection conn = (AvaticaConnection)
DriverManager.getConnection(url);
Statement stmt = conn.createStatement()) {
ResultSet resultSet =
stmt.executeQuery("select * from (values ('a', array['b', 'c']));");
assertTrue(resultSet.next());
}
}
{noformat}
For example with json this gives the following error:
{noformat}
2015-10-07 16:09:08.406:WARN:oejs.HttpChannel:qtp1931444790-20: /
java.lang.RuntimeException:
com.fasterxml.jackson.databind.JsonMappingException: Conflicting getter
definitions for property "updateCount":
org.hsqldb.result.Result#isUpdateCount(0 params) vs
org.hsqldb.result.Result#getUpdateCount(0 params) (through reference chain:
org.apache.calcite.avatica.remote.ExecuteResponse["results"]->java.util.ArrayList[0]->org.apache.calcite.avatica.remote.ResultSetResponse["firstFrame"]->org.apache.calcite.avatica.Frame["rows"]->java.util.ArrayList[0]->org.hsqldb.jdbc.JDBCArray["resultSet"]->org.hsqldb.jdbc.JDBCResultSet["result"])
at
org.apache.calcite.avatica.remote.JsonHandler.handle(JsonHandler.java:61)
at
org.apache.calcite.avatica.remote.JsonHandler.apply(JsonHandler.java:46)
at
org.apache.calcite.avatica.server.AvaticaHandler.handle(AvaticaHandler.java:66)
at
org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:245)
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
Caused by:
com.fasterxml.jackson.databind.JsonMappingException: Conflicting getter
definitions for property "updateCount":
org.hsqldb.result.Result#isUpdateCount(0 params) vs
org.hsqldb.result.Result#getUpdateCount(0 params) (through reference chain:
org.apache.calcite.avatica.remote.ExecuteResponse["results"]->java.util.ArrayList[0]->org.apache.calcite.avatica.remote.ResultSetResponse["firstFrame"]->org.apache.calcite.avatica.Frame["rows"]->java.util.ArrayList[0]->org.hsqldb.jdbc.JDBCArray["resultSet"]->org.hsqldb.jdbc.JDBCResultSet["result"])
at
com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:897)
at
com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:429)
...
{noformat}
The above is with hsqldb's array implementation. With another one it went into
infinite recursion.
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