null pointer exception sql queries includes unnest expression

[TunahanOcal]

Hello, First of all, thank you for the new version of the toolkit. After changing the version to 5.0, I encountered an error when the SQL code has unnest expression. After debugging the code I see that the ASTPathExpression in ASTTablePathExpression which contains unnest expression is null.

You can see where the null pointer error occurs below.

List<ASTNodes.ASTPathExpression> pathExpressions = (List)getResourcePathExpressionFromParseTree(parsedStatement).stream().sorted(Comparator.comparing((expression) -> {
            return expression.getParseLocationRange().start();
        })).collect(Collectors.toList());

You can see the error below:

SEVERE: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.NullPointerException: Cannot invoke "com.google.zetasql.parser.ASTNodes$ASTPathExpression.getParseLocationRange()" because "expression" is null] with root cause
java.lang.NullPointerException: Cannot invoke "com.google.zetasql.parser.ASTNodes$ASTPathExpression.getParseLocationRange()" because "expression" is null
    at com.google.zetasql.toolkit.StatementRewriter.lambda$quoteNamePaths$0(StatementRewriter.java:123)
    at java.base/java.util.Comparator.lambda$comparing$77a9974f$1(Comparator.java:473)
    at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:360)
    at java.base/java.util.TimSort.sort(TimSort.java:220)
    at java.base/java.util.Arrays.sort(Arrays.java:1308)
    at java.base/java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:353)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
    at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
    at com.google.zetasql.toolkit.StatementRewriter.quoteNamePaths(StatementRewriter.java:124)
    at com.google.zetasql.toolkit.ZetaSQLToolkitAnalyzer$StatementAnalyzer.next(ZetaSQLToolkitAnalyzer.java:210)
    at com.google.zetasql.toolkit.ZetaSQLToolkitAnalyzer$StatementAnalyzer.next(ZetaSQLToolkitAnalyzer.java:148)

[ppaglilla]

Thank you for reporting! Fixed in version 0.5.1.

There's not announcement in the repository yet, but it was released to maven already.