/hudson-core/src/main/java/hudson/util/xstream/ImmutableMapConverter.java

http://github.com/hudson/hudson · Java · 70 lines · 34 code · 8 blank · 28 comment · 0 complexity · 7e44af88438cfa1307c7214889b4093b MD5 · raw file

  1. /*
  2. * The MIT License
  3. *
  4. * Copyright (c) 2010, InfraDNA, Inc.
  5. *
  6. * Permission is hereby granted, free of charge, to any person obtaining a copy
  7. * of this software and associated documentation files (the "Software"), to deal
  8. * in the Software without restriction, including without limitation the rights
  9. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10. * copies of the Software, and to permit persons to whom the Software is
  11. * furnished to do so, subject to the following conditions:
  12. *
  13. * The above copyright notice and this permission notice shall be included in
  14. * all copies or substantial portions of the Software.
  15. *
  16. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22. * THE SOFTWARE.
  23. */
  24. package hudson.util.xstream;
  25. import com.google.common.collect.ImmutableMap;
  26. import com.thoughtworks.xstream.XStream;
  27. import com.thoughtworks.xstream.converters.UnmarshallingContext;
  28. import com.thoughtworks.xstream.converters.collections.MapConverter;
  29. import com.thoughtworks.xstream.converters.reflection.ReflectionProvider;
  30. import com.thoughtworks.xstream.converters.reflection.SerializableConverter;
  31. import com.thoughtworks.xstream.io.HierarchicalStreamReader;
  32. import com.thoughtworks.xstream.mapper.Mapper;
  33. import java.util.HashMap;
  34. import java.util.Map;
  35. import java.util.concurrent.ConcurrentHashMap;
  36. /**
  37. * {@link ConcurrentHashMap} should convert like a map, instead of via serialization.
  38. *
  39. * @author Kohsuke Kawaguchi
  40. */
  41. public class ImmutableMapConverter extends MapConverter {
  42. private final SerializableConverter sc;
  43. public ImmutableMapConverter(XStream xs) {
  44. this(xs.getMapper(),xs.getReflectionProvider());
  45. }
  46. public ImmutableMapConverter(Mapper mapper, ReflectionProvider reflectionProvider) {
  47. super(mapper);
  48. sc = new SerializableConverter(mapper,reflectionProvider);
  49. }
  50. @Override
  51. public boolean canConvert(Class type) {
  52. return ImmutableMap.class.isAssignableFrom(type);
  53. }
  54. @Override
  55. public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
  56. return ImmutableMap.copyOf((Map)super.unmarshal(reader, context));
  57. }
  58. @Override
  59. protected Object createCollection(Class type) {
  60. return new HashMap();
  61. }
  62. }