static DbExpression ParseFilter(QueryModel queryModel, LambdaExpression filter)
{
ScopeParameterDictionary scopeParameters = queryModel.ScopeParameters.Clone(filter.Parameters[0], queryModel.ResultModel);
DbExpression filterCondition = FilterPredicateParser.Parse(filter, scopeParameters, queryModel.ScopeTables);
return(filterCondition);
}
public virtual IQueryState Accept(WhereExpression exp)
{
ScopeParameterDictionary scopeParameters = this._queryModel.ScopeParameters.Clone(exp.Predicate.Parameters[0], this._queryModel.ResultModel);
DbExpression whereCondition = FilterPredicateParser.Parse(exp.Predicate, scopeParameters, this._queryModel.ScopeTables);
this._queryModel.AppendCondition(whereCondition);
return(this);
}
DbExpression ParseCondition(LambdaExpression condition, ComplexObjectModel objectModel, StringSet scopeTables)
{
if (condition == null)
{
return(null);
}
return(FilterPredicateParser.Parse(condition, new ScopeParameterDictionary(1)
{
{ condition.Parameters[0], objectModel }
}, scopeTables));
}
public virtual IQueryState Accept(GroupingQueryExpression exp)
{
foreach (LambdaExpression item in exp.GroupKeySelectors)
{
var keySelector = (LambdaExpression)item;
ScopeParameterDictionary scopeParameters = this._queryModel.ScopeParameters.Clone(keySelector.Parameters[0], this._queryModel.ResultModel);
this._queryModel.GroupSegments.AddRange(GroupKeySelectorParser.Parse(keySelector, scopeParameters, this._queryModel.ScopeTables));
}
foreach (LambdaExpression havingPredicate in exp.HavingPredicates)
{
ScopeParameterDictionary scopeParameters = this._queryModel.ScopeParameters.Clone(havingPredicate.Parameters[0], this._queryModel.ResultModel);
var havingCondition = FilterPredicateParser.Parse(havingPredicate, scopeParameters, this._queryModel.ScopeTables);
this._queryModel.AppendHavingCondition(havingCondition);
}
if (exp.Orderings.Count > 0)
{
this._queryModel.Orderings.Clear();
this._queryModel.InheritOrderings = false;
for (int i = 0; i < exp.Orderings.Count; i++)
{
GroupingQueryOrdering groupOrdering = exp.Orderings[i];
ScopeParameterDictionary scopeParameters = this._queryModel.ScopeParameters.Clone(groupOrdering.KeySelector.Parameters[0], this._queryModel.ResultModel);
DbExpression orderingDbExp = GeneralExpressionParser.Parse(groupOrdering.KeySelector, scopeParameters, this._queryModel.ScopeTables);
DbOrdering ordering = new DbOrdering(orderingDbExp, groupOrdering.OrderType);
this._queryModel.Orderings.Add(ordering);
}
}
QueryModel newQueryModel = this.CreateNewQueryModel(exp.Selector);
return(new GroupingQueryState(newQueryModel));
}