private QueryTree.InsertExpression Parse(object entity, ConstantExpressionCatcher ec)
{
var entityMapping = _session.Factory.Mappings.MappingsByType[entity.GetType()];
var insert = new QueryTree.InsertExpression();
var index = 0;
insert.From = new QueryTree.ValueGroupExpression
{
Values =
entityMapping.Maps.Select(
x =>
(QueryTree.Expression)
ec.Catch(new QueryTree.ConstantExpression
{
ParameterName = "p" + index++,
Value = x.Property.GetValue(entity)
})).ToList()
};
insert.Columns =
new List <QueryTree.UnAliasedColumnExpression>(
entityMapping.Maps.Select(x => new QueryTree.UnAliasedColumnExpression {
Column = x.ColumnName
}));
insert.Into = new QueryTree.UnAliasedTableExpression {
Table = entityMapping.TableName
};
return(insert);
}
public ParsedQuery Update(object entity, List <Tuple <MapMapping, object> > updates)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
var ec = new ConstantExpressionCatcher();
var ex = Parse(entity, updates, ec);
return(new ParsedQuery
{
Expression = ex,
Parameters = ec.Constants
});
}
public ParsedQuery Insert(object entity)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
var ec = new ConstantExpressionCatcher();
var ex = Parse(entity, ec);
return(new ParsedQuery
{
Expression = ex,
Parameters = ec.Constants
});
}
private QueryTree.UpdateExpression Parse(object entity, List <Tuple <MapMapping, object> > updates,
ConstantExpressionCatcher ec)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
if (updates == null)
{
throw new ArgumentNullException(nameof(updates));
}
var entityMapping = _session.Factory.Mappings.MappingsByType[entity.GetType()];
var update = new QueryTree.UpdateExpression();
var index = 0;
update.Update = new QueryTree.UnAliasedTableExpression {
Table = entityMapping.TableName
};
update.Set = updates.ToDictionary(
x => new QueryTree.UnAliasedColumnExpression {
Column = x.Item1.ColumnName
},
x => ec.Catch(new QueryTree.ConstantExpression {
ParameterName = "p" + index++, Value = x.Item2
}));
update.Where =
entityMapping.Key.Keys.Select(
x =>
new QueryTree.BinaryExpression
{
Left = new QueryTree.UnAliasedColumnExpression {
Column = x.ColumnName
},
Operator = QueryTree.BooleanOperator.Equal,
Right =
ec.Catch(new QueryTree.ConstantExpression
{
ParameterName = "p" + index++,
Value = x.Property.GetValue(entity)
})
}).ToList();
return(update);
}
