internal void AutoMapColumns <T>(params Expression <Func <T, object> >[] ignorePropertyExpressions)
{
//此代码只能被执行一次
if (this._autoMappedAlreadyCalled)
{
throw new DBClientException("AutoMap cannot be called more than once.");
}
this._autoMappedAlreadyCalled = true;
var properties = ReflectionHelper.GetProperties(_data.Item.GetType());
var ignorePropertyNames = new HashSet <string>();
//添加要过滤的名单
if (ignorePropertyExpressions != null && ignorePropertyExpressions.Length > 0)
{
foreach (var ignorePropertyExpression in ignorePropertyExpressions)
{
var ignorePropertyName = new PropertyExpressionParser <T>(_data.Item, ignorePropertyExpression).Name;
ignorePropertyNames.Add(ignorePropertyName);
}
}
//添加字段
foreach (var property in properties)
{
if (!ignorePropertyNames.Contains(property.Key))//如果此字段不存在
{
if (ReflectionHelper.IsBasicClrType(property.Value.PropertyType))
{
this.Column(property.Key, ReflectionHelper.GetPropertyValue(_data.Item, property.Value), DbType.Object, property.Value.PropertyType);
}
}
}
}
internal void Where <T>(Expression <Func <T, object> > expression, DbType parameterType, int size)
{
var parser = new PropertyExpressionParser <T>(this._data.Item, expression);
this.Where(parser.Name, parser.Value, parameterType, size);
}
