GH-5148 fixes based on review

core/sail/nativerdf/src/main/java/org/eclipse/rdf4j/sail/nativerdf/ValueStore.java

@@ -543,7 +543,7 @@ private boolean isNamespaceData(byte[] data) {
 	private NativeValue data2value(int id, byte[] data) throws IOException {
 		if (data.length == 0) {
 			if (softFailOnCorruptData) {
-				return new CorruptValue(revision, id);
+				return new CorruptValue(revision, id, data);
 			}
 			throw new SailException("Empty data array for value with id " + id);
 		}
@@ -556,7 +556,7 @@ private NativeValue data2value(int id, byte[] data) throws IOException {
 			return data2literal(id, data);
 		default:
 			if (softFailOnCorruptData) {
-				return new CorruptValue(revision, id);
+				return new CorruptValue(revision, id, data);
 			}
 			throw new SailException("Invalid type " + data[0] + " for value with id " + id);
 		}

core/sail/nativerdf/src/main/java/org/eclipse/rdf4j/sail/nativerdf/model/CorruptValue.java

@@ -1,21 +1,22 @@
 /*******************************************************************************
- * Copyright (c) 2024 Eclipse RDF4J contributors, Aduna, and others.
+ * Copyright (c) 2024 Eclipse RDF4J contributors.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Distribution License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
  *
  * SPDX-License-Identifier: BSD-3-Clause
- *******************************************************************************/
+ ******************************************************************************/
+
 package org.eclipse.rdf4j.sail.nativerdf.model;
 
 import org.eclipse.rdf4j.sail.nativerdf.ValueStoreRevision;
 
 /**
  * CorruptValue is used when a NativeValue cannot be read from the ValueStore and if soft failure is enabled (see
  * ValueStore#softFailOnCorruptData).
- *
+ * <p>
  * There is no method isCorruptValue() as it would exist for a "regular" implementation of NativeValue. Since
  * CorruptValue is only to be used in exceptional situations, the recommended way of checking for it is using
  * "instanceof".
@@ -24,32 +25,17 @@
  */
 public class CorruptValue implements NativeValue {
 
-	/*-----------*
-	 * Constants *
-	 *-----------*/
-
 	private static final long serialVersionUID = 8829067881854394802L;
 
-	/*----------*
-	 * Variables *
-	 *----------*/
-
+	private final byte[] data;
 	private volatile ValueStoreRevision revision;
-
 	private volatile int internalID;
 
-	/*--------------*
-	 * Constructors *
-	 *--------------*/
-
-	public CorruptValue(ValueStoreRevision revision, int internalID) {
+	public CorruptValue(ValueStoreRevision revision, int internalID, byte[] data) {
 		setInternalID(internalID, revision);
+		this.data = data;
 	}
 
-	/*---------*
-	 * Methods *
-	 *---------*/
-
 	@Override
 	public void setInternalID(int internalID, ValueStoreRevision revision) {
 		this.internalID = internalID;
@@ -67,7 +53,17 @@ public int getInternalID() {
 	}
 
 	public String stringValue() {
-		return Integer.toString(internalID);
+		return "CorruptValue_with_ID_" + internalID;
+	}
+
+	/**
+	 * Returns the bytes that were read from the ValueStore for this value's internalID. Since the value is corrupt the
+	 * data may be null or an empty array.
+	 *
+	 * @return null, empty array or corrupt data
+	 */
+	public byte[] getData() {
+		return data;
 	}
 
 	@Override
@@ -88,4 +84,4 @@ public boolean equals(Object o) {
 		return super.equals(o);
 	}
 
-}
+}