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https://issues.apache.org/jira/browse/CALCITE-6145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17798891#comment-17798891
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Alessandro Solimando commented on CALCITE-6145:
-----------------------------------------------
[~simonalexs], that kind conversations usually happen in the project mailing
list (see [https://calcite.apache.org/develop/#getting-started] for details),
it's pretty active and Q&A is common there, it's also a rich source of
information about the project, so definitely worth checking it out.
If there is agreement in the discussion in the ML that there is a limitation or
an issue, a Jira ticket usually follows to track it, and to continue the
high-level discussion, if necessary.
Implementation-level discussions happen on GitHub once a PR is finally
available, if any.
HTH!
> Function 'TRIM' without parameters throw NullPointerException
> -------------------------------------------------------------
>
> Key: CALCITE-6145
> URL: https://issues.apache.org/jira/browse/CALCITE-6145
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.36.0
> Reporter: SimonAlexs
> Priority: Major
> Labels: newbie
>
> When use sql as follow, trim without parameters, it throws
> java.lang.NullPointerException.
> {code:java}
> select trim(){code}
> Error position is org.apache.calcite.sql.SqlOperator#constructArgNameList.
> Source code is below. Line 5 "operand.getKind()" results in this exception.
>
> {code:java}
> protected @Nullable List<String> constructArgNameList(SqlCall call) {
> // If any arguments are named, construct a map.
> final ImmutableList.Builder<String> nameBuilder = ImmutableList.builder();
> for (SqlNode operand : call.getOperandList()) {
> if (operand.getKind() == SqlKind.ARGUMENT_ASSIGNMENT) {
> final List<SqlNode> operandList = ((SqlCall) operand).getOperandList();
> nameBuilder.add(((SqlIdentifier) operandList.get(1)).getSimple());
> }
> }
> ImmutableList<String> argNames = nameBuilder.build();
> if (argNames.isEmpty()) {
> return null;
> } else {
> return argNames;
> }
> } {code}
>
> Should it throw an exact description?
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