private static void HandleSetOperation(Select select, MethodCallExpression expression, bool intersect, Func <IQueryable <T>, string> getTableName)
{
if (select.SetOperatons == null)
{
select.SetOperatons = new List <SetOperation>();
}
var setOperationSource = CreateModel(expression.ArgumentAt(2), getTableName).Select;
setOperationSource.Top = 1;
setOperationSource.TopType = Select.TopValueType.Count;
var operatorExpressions = expression.ArgumentAt <NewArrayExpression>(3).
Expressions.
Select(x => x.NodeType == ExpressionType.Quote ? ((UnaryExpression)x).Operand : x).
Select(x => ((LambdaExpression)x).Body).
Select(x => x.NodeType == ExpressionType.Convert ? ((UnaryExpression)x).Operand : x);
var operators = operatorExpressions.Select(x => Operator.Create.Equal(Operand.Create.Projection(ProjectionVisitor <T> .CreateModel(x)),
Operand.Create.Projection(ProjectionVisitor <T> .CreateModel(x, select.From.Alias))));
foreach (var @operator in operators)
{
setOperationSource.Where = setOperationSource.HasWhere ? Operator.Create.Operators(setOperationSource.Where, Operator.OperatorType.And, @operator) : @operator;
}
setOperationSource.Projection = operatorExpressions.Select(x => SelectProjection.Create(ProjectionVisitor <T> .CreateModel(x))).ToList();
select.SetOperatons.Add(new SetOperation {
Type = intersect ? SetOperation.OperationType.Intersect : SetOperation.OperationType.Compliment,
Select = setOperationSource
});
}
public virtual SelectProjection ProjectProperties(LambdaExpression p)
{
Visit(p);
Projection = Properties.Count == 0
? new SelectProjection(MappedProperties, p)
: new SelectProjection(Properties, p);
return(Projection);
}
public ProjectionQueryCommandOptions(IObjectMapping mapping, SelectProjection selectProjection) : base(selectProjection)
{
_mapping = mapping;
}
protected QueryCommandOptions(SelectProjection selectProjection)
{
SelectProjection = selectProjection;
AttributesToLoad = selectProjection.SelectedProperties;
}
public ProjectionResultTransformer(SelectProjection selectProjection, IDictionary <string, string> queriedProperties, IObjectMapping mapping)
: base(queriedProperties, mapping, queriedProperties.Count == mapping.Properties.Count && selectProjection.ReturnType == mapping.Type)
{
_selectProjection = selectProjection;
}
public DynamicQueryCommandOptions(SelectProjection projection)
: base(projection == null ? new Dictionary <string, string>() : projection.SelectedProperties)
{
_projection = projection;
}
public DynamicResultTransformer(SelectProjection projection = null)
{
_projection = projection;
}