001/*
002 * Copyright © 2025 CUI-OpenSource-Software (info@cuioss.de)
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package de.cuioss.test.generator.domain;
017
018import de.cuioss.test.generator.TypedGenerator;
019
020import java.util.UUID;
021import java.util.logging.Level;
022import java.util.logging.Logger;
023
024/**
025 * Generates random UUID strings in the standard 8-4-4-4-12 format (e.g. "550e8400-e29b-41d4-a716-446655440000").
026 * The generator is thread-safe and produces reproducible results when using the same seed.
027 * 
028 * <p><em>Example usage from tests:</em></p>
029 * <pre>
030 * var generator = new UUIDStringGenerator();
031 * String uuid = generator.next(); // Returns a valid UUID string
032 * UUID.fromString(uuid); // Can be parsed back to UUID
033 * </pre>
034 * 
035 * @author Oliver Wolff
036 */
037public class UUIDStringGenerator implements TypedGenerator<String> {
038
039    private static final Logger LOGGER = Logger.getLogger(UUIDStringGenerator.class.getName());
040    private final TypedGenerator<UUID> uuids = new UUIDGenerator();
041
042    @Override
043    public String next() {
044        var result = uuids.next().toString();
045        LOGGER.log(Level.FINE, "Generated UUID: {0}", result);
046        return result;
047    }
048
049    @Override
050    public Class<String> getType() {
051        return String.class;
052    }
053
054}