error in subquery sum is null
-----------------------------

                 Key: OPENJPA-1843
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1843
             Project: OpenJPA
          Issue Type: Bug
          Components: query
    Affects Versions: 2.0.1
         Environment: Windows
            Reporter: Andre


The following is my query

select id from InventoryDetail id 
            join id.inventory i join i.adjustment ad where
            ( ((select sum(cogsd.quantity) from id.costOfGoodsSoldDetails 
cogsd) is null) or
            (select sum(cogsd.quantity) from id.costOfGoodsSoldDetails cogsd) < 
id.quantity)
            and ad.organisation = :organisation
            and id.item = :item 
            order by ad.transactionDate asc

and i get the following exception
Exception in thread "main" <openjpa-2.0.1-r422266:989424 nonfatal user error> 
org.apache.openjpa.persistence.ArgumentException: "Encountered "select sum ( 
cogsd . quantity ) from id . costOfGoodsSoldDetails cogsd ) is" at character 
86, but expected: ["(", ")", "*", "+", ",", "-", ".", "/", ":", "<", "<=", 
"<>", "=", ">", ">=", "?", "ABS", "ALL", "AND", "ANY", "AS", "ASC", "AVG", 
"BETWEEN", "BOTH", "BY", "CASE", "COALESCE", "CONCAT", "COUNT", "CURRENT_DATE", 
"CURRENT_TIME", "CURRENT_TIMESTAMP", "DELETE", "DESC", "DISTINCT", "EMPTY", 
"ESCAPE", "EXISTS", "FETCH", "FROM", "GROUP", "HAVING", "IN", "INDEX", "INNER", 
"IS", "JOIN", "KEY", "LEADING", "LEFT", "LENGTH", "LIKE", "LOCATE", "LOWER", 
"MAX", "MEMBER", "MIN", "MOD", "NEW", "NOT", "NULL", "NULLIF", "OBJECT", "OF", 
"OR", "ORDER", "OUTER", "SELECT", "SET", "SIZE", "SOME", "SQRT", "SUBSTRING", 
"SUM", "TRAILING", "TRIM", "TYPE", "UPDATE", "UPPER", "VALUE", "WHERE", 
<BOOLEAN_LITERAL>, <DATE_LITERAL>, <DECIMAL_LITERAL>, <IDENTIFIER>, 
<INTEGER_LITERAL>, <STRING_LITERAL>, <TIMESTAMP_LITERAL>, <TIME_LITERAL>]." 
while parsing JPQL "select id from InventoryDetail id join id.inventory i join 
i.adjustment ad where ( ((select sum(cogsd.quantity) from 
id.costOfGoodsSoldDetails cogsd) is null) or (select sum(cogsd.quantity) from 
id.costOfGoodsSoldDetails cogsd) < id.quantity) and ad.organisation = 
:organisation and id.item = :item order by ad.transactionDate asc". See nested 
stack trace for original parse error.
        at org.apache.openjpa.kernel.jpql.JPQLParser.parse(JPQLParser.java:51)
        at 
org.apache.openjpa.kernel.ExpressionStoreQuery.newCompilation(ExpressionStoreQuery.java:150)
        at 
org.apache.openjpa.kernel.QueryImpl.newCompilation(QueryImpl.java:670)
        at 
org.apache.openjpa.kernel.QueryImpl.compilationFromCache(QueryImpl.java:652)
        at 
org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:618)
        at 
org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:680)
        at org.apache.openjpa.kernel.QueryImpl.compile(QueryImpl.java:587)
        at 
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:986)
        at 
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:972)
        at 
org.apache.openjpa.persistence.EntityManagerImpl.createQuery(EntityManagerImpl.java:100)
        at id.web.pos.integra.utility.Tester.main(Tester.java:33)
Caused by: <openjpa-2.0.1-r422266:989424 nonfatal user error> 
org.apache.openjpa.persistence.ArgumentException: Encountered "select sum ( 
cogsd . quantity ) from id . costOfGoodsSoldDetails cogsd ) is" at character 
86, but expected: ["(", ")", "*", "+", ",", "-", ".", "/", ":", "<", "<=", 
"<>", "=", ">", ">=", "?", "ABS", "ALL", "AND", "ANY", "AS", "ASC", "AVG", 
"BETWEEN", "BOTH", "BY", "CASE", "COALESCE", "CONCAT", "COUNT", "CURRENT_DATE", 
"CURRENT_TIME", "CURRENT_TIMESTAMP", "DELETE", "DESC", "DISTINCT", "EMPTY", 
"ESCAPE", "EXISTS", "FETCH", "FROM", "GROUP", "HAVING", "IN", "INDEX", "INNER", 
"IS", "JOIN", "KEY", "LEADING", "LEFT", "LENGTH", "LIKE", "LOCATE", "LOWER", 
"MAX", "MEMBER", "MIN", "MOD", "NEW", "NOT", "NULL", "NULLIF", "OBJECT", "OF", 
"OR", "ORDER", "OUTER", "SELECT", "SET", "SIZE", "SOME", "SQRT", "SUBSTRING", 
"SUM", "TRAILING", "TRIM", "TYPE", "UPDATE", "UPPER", "VALUE", "WHERE", 
<BOOLEAN_LITERAL>, <DATE_LITERAL>, <DECIMAL_LITERAL>, <IDENTIFIER>, 
<INTEGER_LITERAL>, <STRING_LITERAL>, <TIMESTAMP_LITERAL>, <TIME_LITERAL>].
        at 
org.apache.openjpa.kernel.jpql.JPQL.generateParseException(JPQL.java:13087)
        at org.apache.openjpa.kernel.jpql.JPQL.jj_consume_token(JPQL.java:12961)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_primary(JPQL.java:1979)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_factor(JPQL.java:1957)
        at org.apache.openjpa.kernel.jpql.JPQL.conditional_term(JPQL.java:1807)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_expression(JPQL.java:1769)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_primary(JPQL.java:1974)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_factor(JPQL.java:1957)
        at org.apache.openjpa.kernel.jpql.JPQL.conditional_term(JPQL.java:1807)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_expression(JPQL.java:1769)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_primary(JPQL.java:1974)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_factor(JPQL.java:1957)
        at org.apache.openjpa.kernel.jpql.JPQL.conditional_term(JPQL.java:1807)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_expression(JPQL.java:1769)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_primary(JPQL.java:1974)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_factor(JPQL.java:1957)
        at org.apache.openjpa.kernel.jpql.JPQL.conditional_term(JPQL.java:1807)
        at 
org.apache.openjpa.kernel.jpql.JPQL.conditional_expression(JPQL.java:1769)
        at org.apache.openjpa.kernel.jpql.JPQL.where_clause(JPQL.java:1587)
        at org.apache.openjpa.kernel.jpql.JPQL.select_statement(JPQL.java:91)
        at org.apache.openjpa.kernel.jpql.JPQL.parseQuery(JPQL.java:63)
        at 
org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.parse(JPQLExpressionBuilder.java:2371)
        at 
org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.<init>(JPQLExpressionBuilder.java:2358)
        at org.apache.openjpa.kernel.jpql.JPQLParser.parse(JPQLParser.java:49)
        ... 10 more

It worked on Hibernate, i tried replacing is null with '= 0' and its fine but 
dunno whether the result is correct or not. Because OpenJPA do not support 
writing to embbeddables i have to rewrite some of my code 1st in order to test.

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