failOnError is now true by default for CopyBuilder

Author: clausnagel

CHANGELOG.md

@@ -7,9 +7,10 @@
 - Removed `withClone` and `withSelfCopy` from `CopyBuilder`.
 - Updated `Copyable.shallowCopy` and `Copyable.deepCopy` to accept a `CopyContext`, which now provides the former
   `withClone` and `withSelfCopy` functionality.
+- Changed `CopyBuilder.failOnError` to be true by default.
 
 ### Fixed
-- `CopyBuilder` now correctly invokes `Copyable.shallowCopy` for the initial object being copied, when provided.
+- `CopyBuilder` now invokes `Copyable.shallowCopy` for the initial object being copied, when provided.
 
 ## [1.2.0] - 2025-11-20
 ### Changed

src/main/java/org/xmlobjects/util/copy/CopyBuilder.java

@@ -43,7 +43,7 @@ public class CopyBuilder {
     private final AbstractCloner<?> MAP_CLONER = new MapCloner<>(this);
     private final AbstractCloner<?> ARRAY_CLONER = new ArrayCloner(this);
 
-    private volatile boolean failOnError;
+    private volatile boolean failOnError = true;
 
     public CopyBuilder() {
         registerKnownCloners();
@@ -91,6 +91,10 @@ public CopyBuilder registerNullCopy(Class<?>... types) {
         return this;
     }
 
+    public boolean isFailOnError() {
+        return failOnError;
+    }
+
     public CopyBuilder failOnError(boolean failOnError) {
         this.failOnError = failOnError;
         return this;