public static object ParseFieldValue(Type modelType, string field, string fieldValue)
{
if (String.IsNullOrWhiteSpace(fieldValue) || fieldValue == "*" || fieldValue == "NULL")
{
return(null);
}
var prop = modelType.GetProperty(field, BindingFlags.Public | BindingFlags.Instance);
if (prop == null)
{
// if not corresponding property was found, it might be custom fields, they are all treated as string
return(fieldValue);
}
if (TypeHelper.IsSimpleType(prop.PropertyType))
{
return(LuceneUtility.FromFieldStringValue(fieldValue, prop.PropertyType));
}
var propTypeInfo = ModelTypeInfo.GetTypeInfo(prop.PropertyType);
if (propTypeInfo.IsDictionary)
{
return(LuceneUtility.FromFieldStringValue(fieldValue, propTypeInfo.DictionaryValueType));
}
else if (propTypeInfo.IsCollection)
{
return(LuceneUtility.FromFieldStringValue(fieldValue, propTypeInfo.ElementType));
}
return(null);
}
static IEnumerable <IFieldable> ToFields(object container, PropertyInfo property)
{
var fieldAttr = property.GetCustomAttribute <FieldAttribute>(false) ?? new FieldAttribute(Field.Index.NOT_ANALYZED, Field.Store.YES);
var propType = ModelTypeInfo.GetTypeInfo(property.PropertyType);
if (propType.IsSimpleType)
{
var propValue = property.GetValue(container, null);
yield return(fieldAttr.CreateLuceneField(property.Name, propValue));
}
else
{
if (propType.IsCollection)
{
if (propType.IsDictionary)
{
if (!TypeHelper.IsSimpleType(propType.DictionaryKeyType))
{
throw new NotSupportedException("Not support complex dictionary key.");
}
if (TypeHelper.IsSimpleType(propType.DictionaryValueType))
{
var dic = property.GetValue(container, null) as IDictionary;
foreach (DictionaryEntry entry in dic)
{
var fieldName = GetDictionaryFieldName(property.Name, entry.Key.ToString());
yield return(fieldAttr.CreateLuceneField(fieldName, entry.Value));
}
}
else
{
var valueTypeInfo = ModelTypeInfo.GetTypeInfo(propType.DictionaryValueType);
if (valueTypeInfo.IsCollection && !valueTypeInfo.IsDictionary && TypeHelper.IsSimpleType(valueTypeInfo.ElementType))
{
var dic = property.GetValue(container, null) as IDictionary;
foreach (DictionaryEntry entry in dic)
{
var fieldName = GetDictionaryFieldName(property.Name, entry.Key.ToString());
var values = entry.Value as IEnumerable;
foreach (var value in values)
{
yield return(fieldAttr.CreateLuceneField(fieldName, value));
}
}
}
else
{
throw new NotSupportedException("Not support dictionary property with value type other than simple type and simple type collection.");
}
}
}
else
{
if (!TypeHelper.IsSimpleType(propType.ElementType))
{
throw new NotSupportedException("Not support complex collection element.");
}
var items = property.GetValue(container, null) as IEnumerable;
if (items != null)
{
foreach (var item in items)
{
yield return(fieldAttr.CreateLuceneField(property.Name, item));
}
}
}
}
}
}
public static object ToModel(Document document, Type modelType)
{
var model = Activator.CreateInstance(modelType);
foreach (var prop in modelType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (TypeHelper.IsSimpleType(prop.PropertyType))
{
var field = document.GetField(prop.Name);
if (field != null)
{
var propValue = LuceneUtility.FromFieldStringValue(field.StringValue, prop.PropertyType);
prop.SetValue(model, propValue, null);
}
}
else
{
var propTypeInfo = ModelTypeInfo.GetTypeInfo(prop.PropertyType);
if (propTypeInfo.IsCollection)
{
if (propTypeInfo.IsDictionary)
{
var propValue = prop.GetValue(model, null);
if (propValue == null)
{
propValue = Activator.CreateInstance(typeof(Dictionary <,>).MakeGenericType(propTypeInfo.DictionaryKeyType, propTypeInfo.DictionaryValueType));
prop.SetValue(model, propValue, null);
}
var dic = propValue as IDictionary;
var fields = document.GetFields().Where(f => f.Name.StartsWith(prop.Name));
// Property type is IDictionary<TKey, TValue>
if (TypeHelper.IsSimpleType(propTypeInfo.DictionaryValueType))
{
foreach (var field in fields)
{
string propName;
string dicKey;
if (TryParseDictionaryFieldName(field.Name, out propName, out dicKey))
{
var fieldValue = LuceneUtility.FromFieldStringValue(field.StringValue, propTypeInfo.DictionaryValueType);
dic.Add(dicKey, fieldValue);
}
}
}
else // Property type is IDictionary<TKey, IList<TValue>> or IDictionary<TKey, ISet<TValue>>
{
var dicValueTypeInfo = ModelTypeInfo.GetTypeInfo(propTypeInfo.DictionaryValueType);
if (dicValueTypeInfo.IsCollection && TypeHelper.IsSimpleType(dicValueTypeInfo.ElementType))
{
Type newDicValueType = null;
MethodInfo hashsetAddMethod = null;
if (dicValueTypeInfo.IsSet)
{
newDicValueType = typeof(HashSet <>).MakeGenericType(dicValueTypeInfo.ElementType);
hashsetAddMethod = GetAddMethod(newDicValueType, dicValueTypeInfo.ElementType);
}
else
{
newDicValueType = typeof(List <>).MakeGenericType(dicValueTypeInfo.ElementType);
}
foreach (var field in fields)
{
string propName;
string dicKey;
if (TryParseDictionaryFieldName(field.Name, out propName, out dicKey))
{
var fieldValue = LuceneUtility.FromFieldStringValue(field.StringValue, dicValueTypeInfo.ElementType);
if (!dic.Contains(dicKey))
{
dic.Add(dicKey, Activator.CreateInstance(newDicValueType));
}
var list = dic[dicKey];
if (dicValueTypeInfo.IsSet) // is HashSet<>
{
hashsetAddMethod.Invoke(list, new[] { fieldValue });
}
else // is IList<>
{
(list as IList).Add(fieldValue);
}
}
}
}
}
}
else // Property is collection but not dictionary
{
var fields = document.GetFields(prop.Name);
if (fields.Length == 0)
{
continue;
}
var list = Activator.CreateInstance(typeof(List <>).MakeGenericType(propTypeInfo.ElementType)) as IList;
foreach (var field in fields)
{
var fieldValue = LuceneUtility.FromFieldStringValue(field.StringValue, propTypeInfo.ElementType);
list.Add(fieldValue);
}
if (prop.PropertyType.IsArray)
{
prop.SetValue(model, list.OfType <object>().ToArray(), null);
}
else
{
prop.SetValue(model, list, null);
}
}
}
}
}
return(model);
}
protected virtual void MapComplexProperty(PropertyInfo targetProperty, PropertyInfo sourceProperty, object sourcePropValue, object source, object target, Type sourceType, Type targetType, string propertyPath, MappingContext context)
{
object targetPropValue = targetProperty.GetValue(target, null);
if (context.VisitedObjects.Contains(targetPropValue))
{
return;
}
var targetPropTypeInfo = ModelTypeInfo.GetTypeInfo(targetProperty.PropertyType);
if (targetPropTypeInfo.IsCollection)
{
var sourcePropTypeInfo = ModelTypeInfo.GetTypeInfo(sourceProperty.PropertyType);
if (targetPropTypeInfo.IsDictionary)
{
if (sourcePropTypeInfo.IsDictionary)
{
// Map between dictionaries
var targetDic = Activator.CreateInstance(typeof(Dictionary <,>).MakeGenericType(targetPropTypeInfo.DictionaryKeyType, targetPropTypeInfo.DictionaryValueType)) as IDictionary;
targetProperty.SetValue(target, targetDic, null);
var sourceDic = sourcePropValue as IDictionary;
foreach (var key in sourceDic.Keys)
{
targetDic.Add(key, sourceDic[key]);
}
}
else if (sourcePropTypeInfo.IsCollection)
{
// source collection element: Name or Key field -> dictionary key, Value field -> dictionary value
var keyProp = sourcePropTypeInfo.ElementType.GetProperty("Key", BindingFlags.Public | BindingFlags.Instance);
if (keyProp == null)
{
keyProp = sourcePropTypeInfo.ElementType.GetProperty("Name", BindingFlags.Public | BindingFlags.Instance);
}
if (keyProp != null)
{
var valueProp = sourcePropTypeInfo.ElementType.GetProperty("Value", BindingFlags.Public | BindingFlags.Instance);
if (valueProp != null)
{
var targetDic = Activator.CreateInstance(typeof(Dictionary <,>).MakeGenericType(targetPropTypeInfo.DictionaryKeyType, targetPropTypeInfo.DictionaryValueType)) as IDictionary;
foreach (var item in sourcePropValue as IEnumerable)
{
var key = keyProp.GetValue(item, null);
var value = valueProp.GetValue(item, null);
targetDic.Add(key, value);
}
targetProperty.SetValue(target, targetDic, null);
}
}
}
}
else // List or Array
{
var sourceElementType = sourcePropTypeInfo.ElementType;
var elementMapper = GetMapperOrDefault(sourceElementType, targetPropTypeInfo.ElementType);
if (elementMapper == null)
{
return;
}
var targetList = Activator.CreateInstance(typeof(List <>).MakeGenericType(targetPropTypeInfo.ElementType));
var addMethod = targetList.GetType().GetMethod("Add", BindingFlags.Public | BindingFlags.Instance, null, new[] { targetPropTypeInfo.ElementType }, null);
var sourceList = sourcePropValue as IEnumerable;
var elementPrefix = propertyPath + ".";
var totalElements = 0;
foreach (var sourceElement in sourceList)
{
var targetElement = elementMapper.Map(sourceElement, Activator.CreateInstance(targetPropTypeInfo.ElementType), sourceElementType, targetPropTypeInfo.ElementType, elementPrefix, context);
addMethod.Invoke(targetList, new[] { targetElement });
totalElements++;
}
if (!Object.ReferenceEquals(targetList, targetPropValue))
{
if (targetProperty.PropertyType.IsArray)
{
var array = Array.CreateInstance(targetPropTypeInfo.ElementType, totalElements);
var i = 0;
foreach (var item in targetList as IEnumerable)
{
array.SetValue(item, i);
i++;
}
targetProperty.SetValue(target, array, null);
}
else
{
targetProperty.SetValue(target, targetList, null);
}
}
}
}
else
{
var mapper = GetMapperOrDefault(sourceProperty.PropertyType, targetProperty.PropertyType);
if (mapper != null)
{
if (targetPropValue == null)
{
targetPropValue = Activator.CreateInstance(targetProperty.PropertyType);
}
targetPropValue = mapper.Map(sourcePropValue, targetPropValue, sourceProperty.PropertyType, targetProperty.PropertyType, propertyPath + ".", context);
targetProperty.SetValue(target, targetPropValue, null);
}
}
}
