# Adding a New Language to Fess

This guide explains how to add internationalization (i18n) support for a new language in Fess.

## Overview

Fess uses a two-tier language support system:

1. **Full UI Translation** (13 languages): Complete user interface translation with label and message files
2. **Search/Analysis Support** (40+ languages): Language-specific text analysis for search indexing

   * near-simultaneously) then this is the first reason known to this peer.
   */
  internal var errorCode: ErrorCode? = null
    get() = withLock { field }

  /** The exception that explains [errorCode]. Null if no exception was provided. */
  internal var errorException: IOException? = null

  init {
    if (headers != null) {

  }

  /*
   * The following methods are safe to call as long as the conditions in the *previous* comment are
   * met *and* the index is less than size().
   *
   * (The above explains when these methods are safe from a `nullness` perspective. From an
   * `unchecked` perspective, they're safe because we put only K/V elements into each array.)
   */

  @SuppressWarnings("unchecked")

  }

  /*
   * The following methods are safe to call as long as the conditions in the *previous* comment are
   * met *and* the index is less than size().
   *
   * (The above explains when these methods are safe from a `nullness` perspective. From an
   * `unchecked` perspective, they're safe because we put only K/V elements into each array.)
   */

  @SuppressWarnings("unchecked")

            }
            if (terminateAfter > 0) {
                builder.setTerminateAfter(terminateAfter);
            }
        }

        public void setExplain(boolean explain) {
            this.explain = explain;
        }

        public void setMinScore(float minScore) {
            this.minScore = minScore;
        }

        public void setPreference(String preference) {

            }
            if (terminateAfter > 0) {
                builder.setTerminateAfter(terminateAfter);
            }
        }

        public void setExplain(boolean explain) {
            this.explain = explain;
        }

        public void setMinScore(float minScore) {
            this.minScore = minScore;
        }

        public void setPreference(String preference) {

            }
            if (terminateAfter > 0) {
                builder.setTerminateAfter(terminateAfter);
            }
        }

        public void setExplain(boolean explain) {
            this.explain = explain;
        }

        public void setMinScore(float minScore) {
            this.minScore = minScore;
        }

        public void setPreference(String preference) {

    }

    @Override
    public ActionFuture<ExplainResponse> explain(final ExplainRequest request) {
        return client.explain(request);
    }

    @Override
    public void explain(final ExplainRequest request, final ActionListener<ExplainResponse> listener) {
        client.explain(request, listener);
    }

    @Override
    public ClearScrollRequestBuilder prepareClearScroll() {

   *
   * <p><b>Java 8+ users:</b> use {@link Comparator#naturalOrder} instead.
   */
  @SuppressWarnings({"unchecked", "rawtypes"})
  // TODO(kevinb): right way to explain this??
  // plus https://github.com/google/guava/issues/989
  public static <C extends Comparable> Ordering<C> natural() {
    return (Ordering<C>) NaturalOrdering.INSTANCE;
  }

  // Static factories

   * requested permits, by an invocation acquire(permits), are served from:
   *
   * - stored permits (if available)
   *
   * - fresh permits (for any remaining permits)
   *
   * How this works is best explained with an example:
   *
   * For a RateLimiter that produces 1 token per second, every second that goes by with the
   * RateLimiter being unused, we increase storedPermits by 1. Say we leave the RateLimiter unused