Update error message for truncated file

Refs NASA-PDS/validate#569

src/main/java/gov/nasa/pds/label/object/ArrayObject.java

@@ -92,6 +92,9 @@ public ArrayObject(URL parent, gov.nasa.arc.pds.xml.generated.File fileObject, A
     setSize(findSize(elementType.getSize()));
 
     adapter = new ArrayAdapter(dimensions, elementType);
+
+    this.name = array.getName();
+    this.localIdentifier = array.getLocalIdentifier();
   }
 
   /**
@@ -130,15 +133,6 @@ public int[] getDimensions() {
     return dimensions;
   }
 
-  /**
-   * return the name of this array.
-   *
-   * @return the name of this array.
-   */
-  public String getName() {
-    return array.getName();
-  }
-
   private long findSize(int elementSize) {
     long count = 1;
     for (int dimension : dimensions) {

src/main/java/gov/nasa/pds/label/object/DataObject.java

@@ -63,6 +63,7 @@ public abstract class DataObject {
   protected long offset;
   protected long size;
   protected String name;
+  protected String localIdentifier;
   protected SeekableByteChannel channel;
   protected DataObjectLocation dataObjectLocation;
 
@@ -278,4 +279,12 @@ public DataObjectLocation getDataObjectLocation() {
   public void setDataObjectLocation(DataObjectLocation dataObjectLocation) {
     this.dataObjectLocation = dataObjectLocation;
   }
+
+  public String getLocalIdentifier() {
+    return localIdentifier;
+  }
+
+  public void setLocalIdentifier(String localIdentifier) {
+    this.localIdentifier = localIdentifier;
+  }
 }

src/main/java/gov/nasa/pds/label/object/TableObject.java

@@ -81,6 +81,7 @@ public TableObject(URL parentDir, gov.nasa.arc.pds.xml.generated.File fileObject
     this.tableReader = null;
 
     this.name = ((ByteStream) tableObject).getName();
+    this.localIdentifier = ((ByteStream) tableObject).getLocalIdentifier();
   }
 
   /**

src/main/java/gov/nasa/pds/objectAccess/ByteWiseFileAccessor.java

@@ -191,8 +191,9 @@ private void initializeAccessor(URL url, long offset, int length, long records,
       if (this.totalBytesRead < expectedBytesToRead) {
         if (expectedBytesToRead > fileSizeMinusOffset) {
           throw new InvalidTableException(
-              "Cannot read object. Remaining file size: " + fileSizeMinusOffset
-                  + ", Expected bytes remaining for object: " + expectedBytesToRead);
+              "Data object is truncated. Expected bytes as defined by label: " + expectedBytesToRead
+                  + " (" + records + " records)" + ", Actual bytes remaining in file: "
+                  + fileSizeMinusOffset + " (" + (fileSizeMinusOffset / length) + " records)");
         } else {
           throw new InvalidTableException("Expected to read in " + expectedBytesToRead
               + " bytes but only " + totalBytesRead + " bytes were read for " + url.toString());