[jira] [Created] (DAFFODIL-2072) Poor reporting of schema errors when used as library

["Brandon Sloane (JIRA)" <ji...@apache.org>]

Brandon Sloane created DAFFODIL-2072:
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             Summary: Poor reporting of schema errors when used as library
                 Key: DAFFODIL-2072
                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2072
             Project: Daffodil
          Issue Type: Bug
          Components: API
    Affects Versions: 2.3.0
            Reporter: Brandon Sloane
         Attachments: Main.scala, test.dfdl.xsd

When used as a library, Daffodil does not produce a meaningfull error when provided with an invalid schema file.

Consider the following Scala program (Main.scala):
{quote}package com.tresys.test

import org.apache.daffodil.sapi.Daffodil
import org.apache.daffodil.sapi.Compiler
import org.apache.daffodil.util.Misc
import org.apache.daffodil.sapi.ProcessorFactory
import org.apache.daffodil.sapi.DataProcessor
import org.apache.daffodil.api.URISchemaSource

object Main extends App {
 override def main(args: Array[String]): Unit = {
 val dfdlCompiler: Compiler = Daffodil.compiler()
 val model = Misc.getRequiredResource("test.dfdl.xsd")
 val pf: ProcessorFactory = dfdlCompiler.compileSource(URISchemaSource(model).uriForLoading)
 val df: DataProcessor = pf.onPath("/")
 }
}
{quote}
The relevent portion of test.dfdl.xsd is:
{quote}<xs:element name="top" type="tns:nonexistant" />
{quote}
where tns:nonexistant is never defined.
{quote}Executing Main.scala produces the following error:

Exception in thread "main" org.apache.daffodil.exceptions.Abort: Usage error: ProcessorFactory.this.isError.unary_!
org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
org.apache.daffodil.compiler.ProcessorFactory.$anonfun$onPath$1(Compiler.scala:131)
scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
org.apache.daffodil.ExecutionMode$.$anonfun$usingCompilerMode$1(ExecutionMode.scala:64)
 at org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
 at org.apache.daffodil.compiler.ProcessorFactory.$anonfun$onPath$1(Compiler.scala:131)
 at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
 at org.apache.daffodil.ExecutionMode$.$anonfun$usingCompilerMode$1(ExecutionMode.scala:64)
 at org.apache.daffodil.compiler.ProcessorFactory.onPath(Compiler.scala:130)
 at org.apache.daffodil.sapi.ProcessorFactory.onPath(Daffodil.scala:273)
 at com.tresys.test.Main$.main(Main.scala:16)
 at com.tresys.test.Main.main(Main.scala)
{quote}
For reference, using the CLI produces the following (good) error:
{quote}[error] Schema Definition Error: Error loading schema due to org.xml.sax.SAXParseException; systemId: file:/home/bsloane/workspace/Test/src/test.dfdl.xsd; lineNumber: 35; columnNumber: 51; src-resolve: Cannot resolve the name 'tns:nonexistant' to a(n) 'type definition' component.
Schema context: file:/home/bsloane/workspace/Test/src/test.dfdl.xsd Location in file:??
{quote}



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