protected List <Expression <Func <TEntity, bool> > > BuildWhereExpression <TEntity>(IViewModel viewModel, IList <string> where)
{
//将条件按照列组合起来
Dictionary <UiColumnInfo, List <Condition> > dictConditions = new Dictionary <UiColumnInfo, List <Condition> >();
foreach (var filter in where)
{
var ss = filter.Split(' ');
if (ss.Length != 3)
{
continue;
}
var columnInfo = viewModel.GetColumnInfo(ss[0]);
var condition = new Condition()
{
Key = ss[1], Value = ss[2]
};
if (columnInfo != null)
{
if (dictConditions.ContainsKey(columnInfo))
{
List <Condition> conditions = dictConditions[columnInfo];
conditions.Add(condition);
}
else
{
List <Condition> conditions = new List <Condition>();
conditions.Add(condition);
dictConditions[columnInfo] = conditions;
}
}
}
List <Expression <Func <TEntity, bool> > > expressions = new List <Expression <Func <TEntity, bool> > >();
foreach (var columnCondition in dictConditions)
{
ParameterExpression parameterExpression = ExpressionHelper.BuildParameterExpression(typeof(TEntity));
UiColumnInfo columnInfo = columnCondition.Key;
Expression <Func <TEntity, bool> > prediateExpression = BuildColumnConditionExpression(parameterExpression, typeof(TEntity), columnInfo, columnCondition.Value)
as Expression <Func <TEntity, bool> >;
if (prediateExpression != null)
{
expressions.Add(prediateExpression);
}
}
return(expressions);
}
public virtual UiColumnInfo CreateColumInfo(string propertyName, string jsonPropertyName = null)
{
UiColumnInfo columnInfo = null;
if (string.IsNullOrEmpty(jsonPropertyName))
{
columnInfo = new UiColumnInfo(propertyName);
}
else
{
columnInfo = new UiColumnInfo(propertyName, jsonPropertyName);
}
if (!_columnInfos.ContainsKey(columnInfo.Key))
{
_columnInfos.Add(columnInfo.Key, columnInfo);
}
return(columnInfo);
}
protected virtual Expression BuildColumnConditionExpression(ParameterExpression parameterExpression, Type entityType, UiColumnInfo columnInfo, List <Condition> conditions)
{
if (columnInfo == null) //|| columnInfo.Searchable == false)
{
return(null);
}
return(ExpressionHelper.BuildColumnConditionExpression(parameterExpression, entityType, columnInfo.PropertyName, columnInfo.PropertyValueType, columnInfo.SearchMode, columnInfo.FilterMode, conditions, false));
}
public virtual IViewModel AddViewModel([NotNull] Type clrType)
{
var viewModel = new ViewModel();
var attributes = (UiClassColumnAttribute[])Attribute.GetCustomAttributes(clrType, UiClassColumnAttributeType);
foreach (var attr in attributes)
{
if (string.IsNullOrEmpty(attr.EntityPropertyName) || string.IsNullOrEmpty(attr.EntityPropertyValueType))
{
continue;
}
UiColumnInfo columnInfo = viewModel.CreateColumInfo(attr.EntityPropertyName, attr.QueryKey);
columnInfo.PropertyValueType = attr.EntityPropertyValueType;
columnInfo.PropertyValue = attr.EntityPropertyValue;
columnInfo.DefaultContent = attr.DefaultContent;
columnInfo.DisplayName = attr.DisplayName;
columnInfo.Visible = attr.Visible;
columnInfo.Searchable = attr.Searchable;
columnInfo.SearchMode = attr.SearchMode;
columnInfo.Filterable = attr.Filterable;
columnInfo.FilterMode = attr.FilterMode;
columnInfo.ReferField = attr.ReferField;
columnInfo.ReferCondition = attr.ReferCondition;
columnInfo.ReferValueFormatMethod = attr.ReferValueFormatMethod;
columnInfo.Orderable = false;
columnInfo.Weight = attr.Weight;
columnInfo.Width = attr.Weight;
columnInfo.FormatMethod = attr.FormatMethod;
columnInfo.OperationEvent = attr.OperationEvent;
}
foreach (var propertyInfo in clrType.GetProperties())
{
UiColumnAttribute columnAttribute = (UiColumnAttribute)Attribute.GetCustomAttribute(propertyInfo, UiColumnAttributeType);
JsonPropertyAttribute jsonPropertyAttribute = (JsonPropertyAttribute)Attribute.GetCustomAttribute(propertyInfo, JsonPropertyAttributeType);
DisplayNameAttribute displayNameAttribute = (DisplayNameAttribute)Attribute.GetCustomAttribute(propertyInfo, DisplayNameAttributeType);
UiColumnInfo columnInfo = viewModel.CreateColumInfo(columnAttribute?.EntityPropertyName ?? propertyInfo.Name, jsonPropertyAttribute?.PropertyName ?? propertyInfo.Name.ToCamelCase());
columnInfo.DefaultContent = columnAttribute?.DefaultContent;
columnInfo.DisplayName = columnAttribute?.DisplayName ?? displayNameAttribute?.DisplayName;
columnInfo.PropertyValueType = columnAttribute?.EntityPropertyValueType ?? Type.GetTypeCode(propertyInfo.PropertyType).ToString();
columnInfo.PropertyValue = columnAttribute?.EntityPropertyValue;
columnInfo.Visible = columnAttribute != null ? columnAttribute.Visible : true;
columnInfo.Orderable = columnAttribute != null ? columnAttribute.Orderable : false;
columnInfo.Searchable = columnAttribute != null ? columnAttribute.Searchable : false;
columnInfo.SearchMode = columnAttribute != null ? columnAttribute.SearchMode : SearchMode.Normal;
columnInfo.Filterable = columnAttribute != null ? columnAttribute.Filterable : false;
columnInfo.FilterMode = columnAttribute != null ? columnAttribute.FilterMode : FilterMode.And;
columnInfo.ReferField = columnAttribute?.ReferField;
columnInfo.ReferCondition = columnAttribute?.ReferCondition;
columnInfo.ReferValueFormatMethod = columnAttribute?.ReferValueFormatMethod;
columnInfo.Weight = columnAttribute != null ? columnAttribute.Weight : 0;
columnInfo.Width = columnAttribute != null ? columnAttribute.Width : 0;
columnInfo.FormatMethod = columnAttribute?.FormatMethod;
columnInfo.OperationEvent = columnAttribute?.OperationEvent;
}
if (!_clrTypeMap.ContainsKey(clrType))
{
_clrTypeMap[clrType] = viewModel;
}
return(viewModel);
}
