/// <summary>
/// 构造方法
/// </summary>
/// <param name="property">属性的信息</param>
/// <param name="propertyDefine">属性的定义</param>
public Column(PropertyInfo property, PropertyDefine propertyDefine)
{
Property = property;
PropertyDefine = propertyDefine;
if (DataType.FullName != DataTypeNames.String && propertyDefine.Length > 0)
{
throw new SpiderException("Only string property can set length.");
}
DefaultValue = Property.PropertyType.IsValueType ? Activator.CreateInstance(Property.PropertyType) : null;
Option = propertyDefine.Option;
SelectorAttribute = new SelectorAttribute
{
Expression = propertyDefine.Expression,
Type = propertyDefine.Type,
Arguments = propertyDefine.Arguments
};
NotNull = propertyDefine.NotNull;
IgnoreStore = propertyDefine.IgnoreStore;
Length = propertyDefine.Length;
foreach (var formatter in property.GetCustomAttributes <Formatter.Formatter>(true))
{
Formatters.Add(formatter);
}
}
/// <summary>
/// 构造方法
/// </summary>
public EntityDefine()
{
Type = typeof(T);
var typeName = Type.FullName;
Name = typeName;
TableInfo = Type.GetCustomAttribute <EntityTable>();
if (TableInfo != null)
{
if (TableInfo.Indexs != null)
{
TableInfo.Indexs = new HashSet <string>(TableInfo.Indexs.Select(i => i.Replace(" ", ""))).ToArray();
}
if (TableInfo.Uniques != null)
{
TableInfo.Uniques = new HashSet <string>(TableInfo.Uniques.Select(i => i.Replace(" ", ""))).ToArray();
}
}
EntitySelector entitySelector = Type.GetCustomAttribute <EntitySelector>();
if (entitySelector != null)
{
Multi = true;
Take = entitySelector.Take;
TakeFromHead = entitySelector.TakeFromHead;
SelectorAttribute = new SelectorAttribute {
Expression = entitySelector.Expression, Type = entitySelector.Type
};
}
else
{
Multi = false;
}
var targetUrlsSelectors = Type.GetCustomAttributes <TargetUrlsSelector>();
TargetUrlsSelectors = targetUrlsSelectors.ToList();
var sharedValueSelectorAttributes = Type.GetCustomAttributes <SharedValueSelector>();
SharedValues = sharedValueSelectorAttributes.Select(e => new SharedValueSelector
{
Name = e.Name,
Expression = e.Expression,
Type = e.Type
}).ToList();
GenerateEntityColumns();
ValidateEntityDefine();
}
