Fixing problem that when there are references the reference Aspect Model will not load (#46)

Author: michelu89

src/main/java/org/eclipse/esmf/ame/model/validation/ViolationError.java

@@ -13,6 +13,7 @@
 
 package org.eclipse.esmf.ame.model.validation;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.eclipse.esmf.aspectmodel.urn.AspectModelUrn;
@@ -37,7 +38,7 @@ public class ViolationError {
 
    @JsonInclude( JsonInclude.Include.NON_NULL )
    @JsonProperty( "fix" )
-   private List<String> fix;
+   private List<String> fix = new ArrayList<>();
 
    @JsonInclude( JsonInclude.Include.NON_NULL )
    @JsonProperty( "errorCode" )

src/main/java/org/eclipse/esmf/ame/resolver/strategy/InMemoryStrategy.java

@@ -49,15 +49,15 @@ protected Try<Model> getModelFromFileSystem( final AspectModelUrn aspectModelUrn
          final Path file = fileSystem.getPath( filePath );
 
          if ( Files.exists( file ) ) {
-            return loadTurtleFromFile( new File( Files.readString( file ) ) );
+            return Try.of( () -> loadTurtleFromString( Files.readString( file ) ) );
          }
 
          LOG.warn( "Looking for {}, but no {}.ttl was found. Inspecting files in {}", aspectModelUrn.getName(),
                aspectModelUrn.getName(), filePath );
 
          Optional<Try<Model>> modelWithDefinition = pathStream
                .filter( Files::isRegularFile )
-               .map( Path::getFileName )
+               .map( Path::toAbsolutePath )
                .map( Path::toString )
                .map( fileSystem::getPath )
                .map( aspectModelPath -> Try.of( () -> loadTurtleFromString( Files.readString( aspectModelPath ) ) ) )