Change log error to warn in SpdxOwlOntology

There are cases where missing property or class names is expected.
Changing these from log.error to log.warn so that the log files are
not poluted with extranous error messages.

Signed-off-by: Gary O'Neall <gary@sourceauditor.com>

Author: goneall

src/main/java/org/spdx/spdxRdfStore/SpdxOwlOntology.java

@@ -219,13 +219,13 @@ public List<String> getClassUriRestrictions(String classUri, String propertyUri)
 			if (classUri.endsWith("GenericSpdxElement")) {
 				ontClass = model.getOntClass(SpdxConstants.SPDX_NAMESPACE + SpdxConstants.CLASS_SPDX_ELEMENT);
 			} else {
-				logger.error(classUri + " is not an SPDX class");
+				logger.warn(classUri + " is not an SPDX class");
 				throw new SpdxRdfException(classUri + " is not an SPDX class");
 			}
 		}
 		OntProperty property = model.getOntProperty(checkGetOwlUriFromRenamed(propertyUri));
 		if (Objects.isNull(property)) {
-			logger.error(propertyUri + " is not an SPDX property");
+			logger.warn(propertyUri + " is not an SPDX property");
 			throw new MissingDataTypeAndClassRestriction(propertyUri + " is not an SPDX property");
 		}
 		List<Statement> propertyRestrictions = new ArrayList<Statement>();
@@ -253,13 +253,13 @@ public List<String> getDataUriRestrictions(String classUri, String propertyUri)
 			if (classUri.endsWith("GenericSpdxElement")) {
 				ontClass = model.getOntClass(SpdxConstants.SPDX_NAMESPACE + SpdxConstants.CLASS_SPDX_ELEMENT);
 			} else {
-				logger.error(classUri + " is not an SPDX class");
+				logger.warn(classUri + " is not an SPDX class");
 				throw new SpdxRdfException(classUri + " is not an SPDX class");
 			}
 		}
 		OntProperty property = model.getOntProperty(checkGetOwlUriFromRenamed(propertyUri));
 		if (Objects.isNull(property)) {
-			logger.error(propertyUri + " is not an SPDX property");
+			logger.warn(propertyUri + " is not an SPDX property");
 			throw new SpdxRdfException(propertyUri + " is not an SPDX property");
 		}
 		List<Statement> propertyRestrictions = new ArrayList<Statement>();
@@ -287,13 +287,13 @@ public boolean isList(String classUri, String propertyUri) throws SpdxRdfExcepti
 			if (classUri.endsWith("GenericSpdxElement")) {
 				ontClass = model.getOntClass(SpdxConstants.SPDX_NAMESPACE + SpdxConstants.CLASS_SPDX_ELEMENT);
 			} else {
-				logger.error(classUri + " is not an SPDX class");
+				logger.warn(classUri + " is not an SPDX class");
 				throw new SpdxRdfException(classUri + " is not an SPDX class");
 			}
 		}
 		OntProperty property = model.getOntProperty(checkGetOwlUriFromRenamed(propertyUri));
 		if (Objects.isNull(property)) {
-			logger.error(propertyUri + " is not an SPDX property");
+			logger.warn(propertyUri + " is not an SPDX property");
 			throw new SpdxRdfException(propertyUri + " is not an SPDX property");
 		}
 		List<Statement> propertyRestrictions = new ArrayList<Statement>();