public IEnumerable <QueryResultColumn> Evaluate(DslDataQuery query, long userId)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var entityType = _queryEntityNameTranslator.GetEntityType(query.QueryEntityName);
var dataSource = _dataSourceInfoProvider.Get(entityType.Name, userId);
if (dataSource == null)
{
return(Enumerable.Empty <QueryResultColumn>());
}
var isQueryBlocksIsEmpty = (query.Blocks == null) ||
!query.Blocks.Any();
if (isQueryBlocksIsEmpty)
{
return(GetDefaultColumns(query, userId, dataSource));
}
RestrictFirstSelect(query, dataSource, userId);
_queryProjectRestrictor.Restrict(query, entityType, dataSource, userId);
return(GetLastSelectColumns(query));
}
private object ExecuteExpr(DslDataQuery query)
{
var linqQuery = _translator.Translate(query);
var entityType = _nameTranslator.GetEntityType(query.QueryEntityName);
var source = _dataSourceProvider.GetDataSource(entityType);
var result = _executor.Execute(source, entityType, linqQuery);
return(result);
}
public string ResolvePropertyTypeName(string entityTypeName, string propertyName)
{
var entityType = _queryEntityNameTranslator.GetEntityType(entityTypeName);
var property = entityType.GetProperty(propertyName);
if (property == null)
{
throw new PropertyDoesNotBelongsToEntityException(entityTypeName, propertyName);
}
if (property.PropertyType.IsGenericType)
{
return(property.PropertyType.GenericTypeArguments[0].Name);
}
var propertyTypeName = property.PropertyType.Name;
return(propertyTypeName);
}