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1 using System.Collections;
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2
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3 using BLToolkit.Reflection;
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4
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5 namespace BLToolkit.Mapping
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6 {
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7 public class ObjectListMapper : IMapDataSourceList, IMapDataDestinationList
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8 {
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9 public ObjectListMapper(IList list, ObjectMapper objectMapper)
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10 {
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11 _list = list;
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12 _mapper = objectMapper;
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13 }
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14
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15 private readonly IList _list;
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16 private ObjectMapper _mapper;
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17 private int _currentItem;
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18
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19 #region IMapDataSourceList Members
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20
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21 void IMapDataSourceList.InitMapping(InitContext initContext)
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22 {
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23 initContext.DataSource = _mapper;
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24 }
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25
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26 bool IMapDataSourceList.SetNextDataSource(InitContext initContext)
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27 {
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28 if (_currentItem >= _list.Count)
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29 return false;
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30
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31 initContext.SourceObject = _list[_currentItem];
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32 _currentItem++;
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33
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34 return true;
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35 }
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36
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37 void IMapDataSourceList.EndMapping(InitContext initContext)
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38 {
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39 }
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40
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41 #endregion
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42
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43 #region IMapDataDestinationList Members
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44
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45 void IMapDataDestinationList.InitMapping(InitContext initContext)
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46 {
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47 ISupportMapping sm = _list as ISupportMapping;
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48
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49 if (sm != null)
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50 {
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51 sm.BeginMapping(initContext);
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52
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53 if (initContext.ObjectMapper != null && _mapper != initContext.ObjectMapper)
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54 _mapper = initContext.ObjectMapper;
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55 }
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56 }
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57
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58 IMapDataDestination IMapDataDestinationList.GetDataDestination(InitContext initContext)
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59 {
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60 return _mapper;
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61 }
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62
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63 private object _currentObject;
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64
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65 private void AddCurrent()
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66 {
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67 if (_currentObject != null)
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68 {
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69 _list.Add(_currentObject);
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70 _currentObject = null;
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71 }
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72 }
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73
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74 object IMapDataDestinationList.GetNextObject(InitContext initContext)
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75 {
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76 AddCurrent();
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77
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78 return _currentObject = _mapper.CreateInstance(initContext);
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79 }
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80
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81 void IMapDataDestinationList.EndMapping(InitContext initContext)
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82 {
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83 AddCurrent();
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84
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85 ISupportMapping sm = _list as ISupportMapping;
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86
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87 if (sm != null)
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88 sm.EndMapping(initContext);
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89 }
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90
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91 #endregion
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92 }
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93 }
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