# Exceptions - `HTTPException` and `WebSocketException`

These are the exceptions that you can raise to show errors to the client.

When you raise an exception, as would happen with normal Python, the rest of the execution is aborted. This way you can raise these exceptions from anywhere in the code to abort a request and show the error to the client.

You can use:

* `HTTPException`
* `WebSocketException`

  CollectionBenchmarkSampleData(int size) {
    this(true, new SpecialRandom(), 1.0, size);
  }

  CollectionBenchmarkSampleData(
      boolean isUserTypeFast, SpecialRandom random, double hitRate, int size) {
    this.isUserTypeFast = isUserTypeFast;
    this.random = checkNotNull(random);
    this.hitRate = hitRate;
    this.size = size;

    this.valuesInSet = createData();
    this.queries = createQueries(valuesInSet, 1024);
  }

    public HtmlResponse create(final CreateForm form) {
        verifyCrudMode(form.crudMode, CrudMode.CREATE, form.dictId);
        validate(form, messages -> {}, this::asEditHtml);
        verifyToken(this::asEditHtml);
        createProtwordsItem(form, this::asEditHtml).ifPresent(entity -> {
            protwordsService.store(form.dictId, entity);
            saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));

    for (int i = 0; i < capacity; i++) {
      strings[i] = String.valueOf(Math.random());
    }
  }

  @Benchmark
  void addsAndRemoves(int reps) {
    int capacity = this.capacity;
    BlockingQueue<String> queue = this.queue;
    String[] strings = this.strings;
    for (int i = 0; i < reps; i++) {
      for (int j = 0; j < capacity; j++) {
        queue.add(strings[j]);
      }
      for (int j = 0; j < capacity; j++) {

    util.concurrent, like nearly all our packages, has two .gwt.xml files: one
    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

/*
 * © 2017 AgNO3 Gmbh & Co. KG
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

/*
 * © 2016 AgNO3 Gmbh & Co. KG
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

  private final Equivalence<T> resultEquivalence;

  FunctionalEquivalence(
      Function<? super F, ? extends @Nullable T> function, Equivalence<T> resultEquivalence) {
    this.function = checkNotNull(function);
    this.resultEquivalence = checkNotNull(resultEquivalence);
  }

  @Override
  protected boolean doEquivalent(F a, F b) {
    return resultEquivalence.equivalent(function.apply(a), function.apply(b));
  }

  private final char innerNodeCode;

  /** The character used for a leaf node in the trie encoding */
  private final char leafNodeCode;

  PublicSuffixType(char innerNodeCode, char leafNodeCode) {
    this.innerNodeCode = innerNodeCode;
    this.leafNodeCode = leafNodeCode;
  }

  char getLeafNodeCode() {
    return leafNodeCode;
  }

  char getInnerNodeCode() {
    return innerNodeCode;
  }

 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   http://www.apache.org/licenses/LICENSE-2.0