String key generator fails with NPE if any field value is null

[GoogleCodeExporter]

My workaround:

/**
 * {@code CacheKeyGenerator} implementation that avoids Slurry's {@code StringBasedKeyGenerator}
 * null pointer exceptions on null key fields.
 */
public class StringCacheKeyGenerator extends BaseKeyGenerator {

  @Override
  protected String getKey(Object o) {
    // The fix is to not use toString()
    return ":" + o;
  }

}

Original issue reported on code.google.com by [email protected] on 3 May 2013 at 1:38