Major Description
If we have a schema with an array with occursCountKind="expression" and minOccurs greater than zero, and we unparse an infoset where there are zero occurrences, we get an abort assertion. This is not a valid infoset, but we should get an UnparseError instead of an abort.
Schema:
<simpleType name="oneNum" dfdl:lengthKind="explicit" dfdl:length="1"> <restriction base="xs:int" /> </simpleType> <element name="root"> <complexType> <sequence> <element name="field1Occurs" type="ex:oneNum" /> <element name="field1" type="ex:oneNum" minOccurs="1" maxOccurs="255" dfdl:occursCountKind="expression" dfdl:occursCount="{ ../field1Occurs }" /> <element name="field2" type="ex:oneNum" minOccurs="1" maxOccurs="255" dfdl:occursCountKind="parsed" /> </sequence> </complexType> </element>
Infoset:
<ex:root xmlns:ex="http://example.com"> <field1Occurs>0</field1Occurs> <field2>1</field2> <field2>2</field2> <field2>3</field2> <field2>4</field2> </ex:root>
Error:
org.apache.daffodil.lib.exceptions.Abort: Invariant broken: minReps.==(0L) org.apache.daffodil.lib.exceptions.Assert$.abort(Assert.scala:159) org.apache.daffodil.unparsers.runtime1.OrderedUnseparatedSequenceUnparser.unparse(UnseparatedSequenceUnparsers.scala:159) org.apache.daffodil.runtime1.processors.unparsers.Unparser.unparse1(Unparser.scala:75) org.apache.daffodil.runtime1.processors.unparsers.Unparser.unparse1$(Unparser.scala:38) at org.apache.daffodil.lib.exceptions.Assert$.abort(Assert.scala:159) at org.apache.daffodil.unparsers.runtime1.OrderedUnseparatedSequenceUnparser.unparse(UnseparatedSequenceUnparsers.scala:159) at org.apache.daffodil.runtime1.processors.unparsers.Unparser.unparse1(Unparser.scala:75) at org.apache.daffodil.runtime1.processors.unparsers.Unparser.unparse1$(Unparser.scala:38) at org.apache.daffodil.runtime1.processors.unparsers.CombinatorUnparser.unparse1(Unparser.scala:124) at org.apache.daffodil.unparsers.runtime1.ElementUnparserBase.runContentUnparser(ElementUnparser.scala:181) at org.apache.daffodil.unparsers.runtime1.ElementUnparserBase.unparse(ElementUnparser.scala:202)