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/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.apphosting.api;

/**
 * Reources for namespaces used by front end and back end.
 * 
 */
public final class NamespaceResources {

  /**
   * The separator character used to encode the appId/namespace pair.
   */
  // This must be less than every valid app ID character (so all of 
  // an app's records are contiguous in bigtable, regardless of namespaces).
  //
  // Note that mangling with the "" namespace is a no-op to preserve
  // existing records.
  //
  // *IMPORTANT* - Keep this in sync with C++ client and Python (and newer runtimes).
  // ()
  public static final char NAMESPACE_SEPARATOR = '!';

  private NamespaceResources() {
    // Make not instantiable.
  }
}