public virtual void Add(IFieldPath path)
{
// nothing to do if we're at the end of the path
if (path.Count <= 1)
{
return;
}
var field = (IRelationField)path[0];
if (field.Subject.Equals(Subject))
{
if (!_paths.ContainsKey(field))
{
_paths.Add(field, new UniqueFieldPath(field)
{
Predecessor = this
});
}
_paths[field].Add(path[1, null]);
}
else
{
throw new ArgumentException(String.Format("Cannot add given FieldPath to UniqueFieldPath as parent subjects at this point differ ({0}, trying to add {1}).", Field.ToString(), path[0].ToString()));
}
}
/// <summary>
/// Add another field path to this path. Will ensure it's still a valid path from root to last.
/// </summary>
/// <param name="other"></param>
public void Add(IFieldPath other)
{
foreach (var f in other)
{
Add(f);
}
}
public WebObjectGraphReaderEnumerator(IEnumerator <TData> enumerator, IFieldPath <TypeModel, PropertyInfoField> fieldPath,
ITypeInstanceFactory typeInstanceFactory)
{
_enumerator = enumerator;
_fieldPath = fieldPath;
_typeInstanceFactory = typeInstanceFactory;
}
/// <summary>
/// Works with values that are BetweenValue objects.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
{
return(null);
}
var v = values[0] as BetweenValue;
if (v != null)
{
if (v.From != null && v.To != null)
{
return(new SqlBetweenParameter(path, v.From, v.To));
}
else if (v.To == null)
{
return(new SqlSimpleParameter(path, ">=", v.From));
}
else if (v.From == null)
{
return(new SqlSimpleParameter(path, "<=", v.To));
}
}
return(null);
}
/// <summary>
/// Works with BetweenValues of DateValues.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
/// <param name="path"></param>
/// <param name="values"></param>
/// <returns></returns>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
return null;
var v = values[0] as BetweenValue;
if (v != null)
{
var from = ((BetweenValue)v).From as DateValue;
var to = ((BetweenValue)v).To as DateValue;
if (from == null && to == null)
return null;
else if (from != null && to != null)
return new Conjunction()
.Parameter(new SimpleParameter(path, ">=", from.Lower))
.Parameter(new SimpleParameter(path, "<", to.Upper));
else if (to == null)
return new SimpleParameter(path, ">=", from.Lower);
else if (from == null)
return new SimpleParameter(path, "<", to.Upper);
}
return null;
}
/// <summary>
/// Use a column in the select list, sort and group by it too.
/// </summary>
/// <param name="path"></param>
/// <param name="direction"></param>
/// <returns></returns>
public virtual SqlGenerator ColumnOrderByGroupBy(IFieldPath path, SortDirection direction)
{
Column(path);
OrderBy(path, direction);
GroupBy(path);
return(this);
}
/// <summary>
/// Works with any value that can be interpreted by the data provider being used.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null)
{
return(Other.Build(path, null));
}
Junction j = (Type == JunctionType.Conjunction ? (Junction) new Conjunction() : new Disjunction());
foreach (var v in values)
{
var p = Other.Build(path, v);
if (p != null)
{
j.Add(p);
}
}
if (j.Count == 0)
{
return(null);
}
else if (j.Count == 1)
{
return(j[0]);
}
return(j);
}
/// <summary>
/// Works with any value that can be interpreted by the data provider being used.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
return null;
return new SimpleParameter(path, Operator, values[0]);
}
public Parser Create(IFieldPath path, ParameterBuilder builder)
{
Parser parser = null;
if (ParserLookup != null && ParserLookup.ContainsKey(path.Last))
{
parser = ParserLookup[path.Last];
}
else
{
if (path.Last.DataType == typeof(DateTime))
{
parser = new ExtendedDateParser();
}
else if (IsWholeNumber(path.Last.DataType))
{
parser = new ConvertParser <object, long>();
}
else if (IsDecimal(path.Last.DataType))
{
parser = new ConvertParser <object, double>();
}
}
return(parser);
}
public UIElement <UIElement> Build(IFieldPath path, ParameterBuilder builder)
{
UIElement <System.Windows.UIElement> c;
var f = path.Last;
var listArgs = OnListRequired(path);
if (builder is JunctionBuilder)
{
return(Build(path, ((JunctionBuilder)builder).Other));
}
else if (builder is BetweenBuilder || builder is DateBetweenBuilder)
{
var between = new BetweenElement(Build(path, null), Build(path, null));
if (!String.IsNullOrEmpty(path.Last.DisplayFormat))
{
// assume standard formatting codes
// ^C\d*$ = currency (or "$#.00")
// ^P\d*$ = percent (or "0.00\%")
if (System.Text.RegularExpressions.Regex.IsMatch(path.Last.DisplayFormat.Trim(), @"^([Cc]\d*)|(\$.*)$"))
{
between.PrefixText = System.Globalization.NumberFormatInfo.CurrentInfo.CurrencySymbol;
}
else if (System.Text.RegularExpressions.Regex.IsMatch(path.Last.DisplayFormat.Trim(), @"^([Pp]\d*)|([^%]*%)$"))
{
between.PostfixText = "%";
}
}
return(between);
}
else if (builder is BooleanBuilder || builder is NullBuilder)
{
return(null);
}
else if (builder is NotBuilder)
{
return(Build(path, ((NotBuilder)builder).Other));
}
else if (f.DataType == typeof(bool))
{
c = new CheckBoxElement();
}
else if (listArgs.List != null)
{
if (listArgs.Type == Configuration.FieldListType.Limited)
{
c = new ListBoxElement(listArgs.List, 400);
}
else
{
c = new ComboBoxElement(listArgs.List, true);
}
}
else
{
c = new TextBoxElement();
}
return(c);
}
/// <summary>
/// Factory method to create concrete part.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
protected virtual PresetPart <T> CreatePart(IFieldPath path)
{
var part = new PresetPart <T>(path);
part.SelectedBuilder = _builderFactory.GetDefault(part.SelectedPath);
part.UIElement = _controlFactory.Build(part.SelectedPath, part.SelectedBuilder);
return(part);
}
public WebOpenGraphEnumerableStream(WebObjectGraphReaderWriterBase objectReaderWriter,
IFieldPath <TypeModel, PropertyInfoField> fieldPath,
ITypeInstanceFactory typeInstanceFactory)
{
_objectReaderWriter = objectReaderWriter;
_fieldPath = fieldPath;
_typeInstanceFactory = typeInstanceFactory;
}
public bool CheckPath(IFieldPath <EntityModel, EntityField> fieldPath)
{
// technically we could fetch the names for each column in the query result and check the field is actually present
// but do we need to in reality? the generated queries shouldn't fault
var ord = _queryResult.GetOrdinal(fieldPath.FinalField.ProjectionAlias);
return(!_queryResult.IsDBNull(ord));
}
public override IParameter Build(IFieldPath path, params object[] values)
{
var other = Other.Build(path, values);
if (other == null)
return null;
return new NotParameter(other);
}
public BindingList<object> this[IFieldPath key]
{
get
{
if (ContainsKey(key))
return _listCache[key].Data;
return null;
}
}
/// <summary>
/// Works with any value that can be interpreted by the data provider being used.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
{
return(null);
}
return(new SimpleParameter(path, Operator, values[0]));
}
private ListRequestedArgs OnListRequired(IFieldPath path)
{
var args = new ListRequestedArgs(path);
if (ListRequested != null)
{
ListRequested(this, args);
}
return(args);
}
/// <summary>
/// Works with values which are strings.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
return null;
var v = values[0];
if (v is string)
return new LikeParameter(path, (string)v, Mode);
return null;
}
public override IParameter Build(IFieldPath path, params object[] values)
{
var other = Other.Build(path, values);
if (other == null || !(other is ISqlParameter))
{
return(null);
}
return(new SqlNotParameter((ISqlParameter)other));
}
public BindingList <object> this[IFieldPath key]
{
get
{
if (ContainsKey(key))
{
return(_listCache[key].Data);
}
return(null);
}
}
public virtual UniqueFieldPath this[IFieldPath key]
{
get
{
// unwrap FieldPath recursively to find the last step, assuming FieldPath.Last is IField (i.e. we don't traverse it)
if (key.Count == 1)
{
return(this);
}
return(_paths[(IRelationField)key[0]][key[1, null]]);
}
}
public ConvertedViewIntersectionField(
string fieldName, bool canRead, bool canWrite, TypeModel declaringTypeModel,
PropertyInfoField originPropertyField, IFieldPath <ViewIntersectionModel, ViewIntersectionField> path,
TryConvertDelegate <TSourceData, TDestinationData> tryConvertDelegate
) :
base(
fieldName, canRead, canWrite, typeof(TDestinationData), declaringTypeModel, originPropertyField
)
{
_path = path;
_tryConvertDelegate = tryConvertDelegate;
}
public IEnumerable <ViewIntersectionField> GetPathFields(IFieldPath <ViewIntersectionField> fieldPath)
{
if (fieldPath.FinalField == null)
{
return(Fields);
}
if (fieldPath.FinalField.SelfModel == null)
{
return(new ViewIntersectionField[0]);
}
return(fieldPath.FinalField.SelfModel.Fields);
}
public virtual UniqueFieldPath this[IFieldPath key]
{
get
{
var ufp = _paths.Find(m => m.Subject.Equals(key[0].Subject));
if (ufp == null)
{
throw new KeyNotFoundException(String.Format("FieldPath starting at {0} not found in unique field path", key[0].ToString()));
}
return(ufp[key]);
}
}
/// <summary>
/// Works with DateValues.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
/// <param name="path"></param>
/// <param name="values"></param>
/// <returns></returns>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
return null;
if (values[0] is DateValue)
{
var date = (DateValue)values[0];
return new SimpleParameter(path, ">=", date.Lower);
}
return null;
}
private IntersectedFields <EntityModel, EntityField, TypeModel, PropertyInfoField> BuildIntersectedFields(
EntityField referenceField, IFieldPath <EntityModel, EntityField> referenceKey,
IFieldPath <TypeModel, PropertyInfoField> modelField
)
{
// to obey generic type constraints we need to use reflection
// so there's no use in using the ill-suited generic dispatch pattern here
var factory = Activator.CreateInstance(
typeof(Factory <,>).MakeGenericType(referenceField.FieldDataType, referenceKey.FinalField.FieldDataType),
TypeInstanceFactory, Schema
) as Factory;
return(factory.BuildIntersectedFields(referenceKey, modelField));
}
void SelectedFieldChanged(object sender, EventArgs e)
{
var d = ((FieldPathComboItem)sender);
var path = new FieldPath();
foreach (var f in Items)
{
path.Add(f.SelectedField);
if (f == d) // end of the road (either truncated or the last field changed)
{
SelectedPath = path;
return;
}
}
}
/// <summary>
/// Works with values which are strings.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
{
return(null);
}
var v = values[0];
if (v is string)
{
return(new LikeParameter(path, (string)v, Mode));
}
return(null);
}
/// <summary>
/// Works with DateValues.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
{
return(null);
}
if (values[0] is DateValue)
{
var date = (DateValue)values[0];
return(new SqlSimpleParameter(path, ">=", date.Upper));
}
return(null);
}
private IGraphReader <ViewIntersectionModel, ViewIntersectionField> GetNodeReader(
IFieldPath <ViewIntersectionModel, ViewIntersectionField> fieldPath
)
{
int offset = 0;
var reader = _rootReader;
foreach (var pathSegment in fieldPath.Fields)
{
offset++;
if (pathSegment is IConvertedViewField convertedViewField)
{
reader = convertedViewField.ConvertToReader(reader, offset);
}
}
return(reader);
}
/// <summary>
/// Works with values that are BetweenValue objects.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
return null;
var v = values[0] as BetweenValue;
if (v != null)
{
if (v.From != null && v.To != null)
return new BetweenParameter(path, v.From, v.To);
else if (v.To == null)
return new SimpleParameter(path, ">=", v.From);
else if (v.From == null)
return new SimpleParameter(path, "<=", v.To);
}
return null;
}
/// <summary>
/// Works with any value that can be interpreted by the data provider being used.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null)
return Other.Build(path, null);
Junction j = (Type == JunctionType.Conjunction ? (Junction)new Conjunction() : new Disjunction());
foreach (var v in values)
{
var p = Other.Build(path, v);
if (p != null)
j.Add(p);
}
if (j.Count == 0)
return null;
else if (j.Count == 1)
return j[0];
return j;
}
public List <object> GetList(IFieldPath path)
{
var generator = GetListGenerator();
generator.Path = path;
if (Regex.IsMatch(path.Last.List.Source, @"^select.*[`'\[\s]id", RegexOptions.IgnoreCase))
{
generator.IdColumn = "ID";
generator.ValueColumn = "Value";
}
HashSet <object> set = new HashSet <object>();
using (var conn = CreateConnection())
{
conn.Open();
using (var cmd = conn.CreateCommand())
{
//cmd.CommandTimeout = CommandTimeout;
generator.UpdateCommand(cmd);
using (var reader = cmd.ExecuteReader())
{
int idx = -1;
try { idx = reader.GetOrdinal("ID"); }
catch { }
while (reader.Read())
{
// assumes either 1 or 2 columns. If 2, one will be ID column
var item = reader.GetValue(idx != -1 ? 1 - idx : 0);
if (!set.Contains(item))
{
set.Add(item);
}
}
}
}
}
return(new List <object>(set));
}
public T Read <T>(IFieldPath <EntityModel, EntityField> fieldPath)
{
if (typeof(T).IsEnum)
{
return((T)(object)Read <int>(fieldPath));
}
var ord = _queryResult.GetOrdinal(fieldPath.FinalField.ProjectionAlias);
if (_queryResult.IsDBNull(ord))
{
return(default(T));
}
var typeReader = QueryTypeReaders.GetTypeReader <T>();
if (typeReader == null)
{
throw new InvalidOperationException($"Type `{typeof(T).FullName}` not supported.");
}
return(typeReader(_queryResult, ord));
}
/// <summary>
/// Creates a builder that can be used as a default for a field path.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public virtual IParameterBuilder GetDefault(IFieldPath path)
{
IParameterBuilder b;
if (path.Last.DataType == typeof(string))
{
b = new LikeBuilder(MatchMode.Anywhere);
}
else if (path.Last.DataType == typeof(DateTime))
{
b = new DateBetweenBuilder();
}
else if (IsNumeric(path.Last.DataType))
{
b = new BetweenBuilder();
}
else
{
b = new SimpleBuilder("=");
}
return(new JunctionBuilder(JunctionType.Disjunction, b));
}
/// <summary>
/// Works with BetweenValues of DateValues.
/// Only processes the first value. Use JunctionBuilder to combine multiple.
/// </summary>
/// <param name="path"></param>
/// <param name="values"></param>
/// <returns></returns>
public override IParameter Build(IFieldPath path, params object[] values)
{
if (values == null || values.Length == 0)
{
return(null);
}
var v = values[0] as BetweenValue;
if (v != null)
{
var from = ((BetweenValue)v).From as DateValue;
var to = ((BetweenValue)v).To as DateValue;
if (from == null && to == null)
{
return(null);
}
else if (from != null && to != null)
{
return(new SqlConjunction()
.Parameter(new SqlSimpleParameter(path, ">=", from.Lower))
.Parameter(new SqlSimpleParameter(path, "<", to.Upper)));
}
else if (to == null)
{
return(new SqlSimpleParameter(path, ">=", from.Lower));
}
else if (from == null)
{
return(new SqlSimpleParameter(path, "<", to.Upper));
}
}
return(null);
}
public Action GetList(IFieldPath path, IDbServiceAsyncCallback <List <object> > callback) //ListCallback callback)
{
var worker = new BackgroundWorker();
worker.WorkerSupportsCancellation = true;
worker.DoWork += (s1, e1) =>
{
e1.Result = GetList(path);
e1.Cancel = worker.CancellationPending;
};
worker.RunWorkerCompleted += (s2, e2) =>
{
worker.Dispose();
// cancellation assumes the SearchWorker property has been set null
if (e2.Cancelled)
{
return;
}
if (e2.Error != null)
{
//MessageBox.Show("There was an error when trying to perform the search.\n\n" + e2.Error.Message, "Search", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
callback.Exception = e2.Error;
}
else
{
callback.Results = e2.Result as List <object>;
//callback(path, e2.Result as List<object>);
}
callback.Callback(callback);
};
worker.RunWorkerAsync();
return(new Action(worker.CancelAsync));
}
/// <summary>
/// Use a column in the select list, sort and group by it too.
/// </summary>
/// <param name="path"></param>
/// <param name="direction"></param>
/// <returns></returns>
public virtual SqlGenerator ColumnOrderByGroupBy(IFieldPath path, SortDirection direction)
{
Column(path);
OrderBy(path, direction);
GroupBy(path);
return this;
}
/// <summary>
/// Add another field path to this path. Will ensure it's still a valid path from root to last.
/// </summary>
/// <param name="other"></param>
public void Add(IFieldPath other)
{
foreach (var f in other)
Add(f);
}
/// <summary>
/// Define a column to group by. Any additional joins that are required to use these columns will be included.
/// Can be called multiple times.
/// </summary>
public virtual SqlGenerator GroupBy(IFieldPath path)
{
_groupBy.Add(path);
return this;
}
/// <summary>
/// Ignores values and just creates SimpleParameters that do or don't equal Value.
/// </summary>
public override IParameter Build(IFieldPath path, params object[] values)
{
return new SimpleParameter(path, (Value ? "<>" : "="), 0);
}
/// <summary>
/// Creates a list of builders relevant to the given field path.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public virtual IList<ParameterBuilder> Build(IFieldPath path)
{
var builders = new List<ParameterBuilder>();
if (path.Last.DataType == typeof(bool))
{
builders.Add(new BooleanBuilder(true));
builders.Add(new BooleanBuilder(false));
builders.Add(new NullBuilder());
builders.Add(new NotBuilder(new NullBuilder()) { Label = "is not null" });
}
else if (path.Last.DataType == typeof(string))
{
builders.Add(new SimpleBuilder("="));
builders.Add(new LikeBuilder(MatchMode.Anywhere));
builders.Add(new LikeBuilder(MatchMode.Start));
builders.Add(new LikeBuilder(MatchMode.End));
builders.Add(new NotBuilder(new SimpleBuilder("=")));
builders.Add(new NotBuilder(new LikeBuilder(MatchMode.Anywhere)) { Label = "does not contain" });
builders.Add(new NotBuilder(new LikeBuilder(MatchMode.Start)) { Label = "does not start with" });
builders.Add(new NotBuilder(new LikeBuilder(MatchMode.End)) { Label = "does not end with" });
builders.Add(new NullBuilder());
builders.Add(new NotBuilder(new NullBuilder()) { Label = "is not null" });
}
else if (path.Last.DataType == typeof(DateTime))
{
builders.Add(new DateEqualsBuilder());
builders.Add(new NotBuilder(new DateEqualsBuilder()));
builders.Add(new DateGtBuilder());
builders.Add(new DateGtEqualBuilder());
builders.Add(new DateLtBuilder());
builders.Add(new DateLtEqualBuilder());
builders.Add(new DateBetweenBuilder());
builders.Add(new NotBuilder(new DateBetweenBuilder()));
builders.Add(new NullBuilder());
builders.Add(new NotBuilder(new NullBuilder()) { Label = "is not null" });
}
else if (IsNumeric(path.Last.DataType))
{
builders.Add(new SimpleBuilder("="));
builders.Add(new NotBuilder(new SimpleBuilder("=")));
builders.Add(new SimpleBuilder(">"));
builders.Add(new SimpleBuilder(">="));
builders.Add(new SimpleBuilder("<"));
builders.Add(new SimpleBuilder("<="));
builders.Add(new BetweenBuilder());
builders.Add(new NotBuilder(new BetweenBuilder()));
builders.Add(new NullBuilder());
builders.Add(new NotBuilder(new NullBuilder()) { Label = "is not null" });
}
else
{
// catch all - but if someone is using custom types they can extend the factory and deal with it
builders.Add(new SimpleBuilder("="));
builders.Add(new NotBuilder(new SimpleBuilder("=")));
builders.Add(new NullBuilder());
builders.Add(new NotBuilder(new NullBuilder()) { Label = "is not null" });
}
// pretty much always a disjunction when combining multiple values
for (int i = 0; i < builders.Count; i++)
builders[i] = new JunctionBuilder(JunctionType.Disjunction, builders[i]);
return builders;
}
public LikeParameter(IFieldPath path, string value)
: this(path, value, MatchMode.Anywhere)
{
}
/// <summary>
/// Uses a column in the select list and also group by it.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public virtual SqlGenerator ColumnGroupBy(IFieldPath path)
{
Column(path);
GroupBy(path);
return this;
}
public SimpleParameter(IFieldPath path, string op, object value)
{
Path = path;
Operator = op;
Value = value;
}
void SelectedFieldChanged(object sender, EventArgs e)
{
var d = ((FieldPathComboItem)sender);
var path = new FieldPath();
foreach (var f in Items)
{
path.Add(f.SelectedField);
if (f == d) // end of the road (either truncated or the last field changed)
{
SelectedPath = path;
return;
}
}
}
public bool ContainsKey(IFieldPath path)
{
return _listCache.ContainsKey(path);
}
public ListRequestedArgs(IFieldPath path)
{
Path = path;
}
public BetweenParameter(IFieldPath path, object lo, object hi)
{
_path = path;
_lo = lo;
_hi = hi;
}
/// <summary>
/// Uses a column in the select list. Any additional joins that are required to use these columns will be included.
/// Can be called multiple times.
/// </summary>
public virtual SqlGenerator Column(IFieldPath path)
{
_columns.Add(path);
return this;
}
public LikeParameter(IFieldPath path, string value, MatchMode mode)
{
Path = path;
Value = value;
Mode = mode;
}
public SqlString AddField(IFieldPath path)
{
Parts.Add(path);
return this;
}
/// <summary> /// Builds a parameter for the given path with the list of values parsed from the UI. /// </summary> /// <param name="path"></param> /// <param name="values"></param> /// <returns></returns> public abstract IParameter Build(IFieldPath path, params object[] values);
public SqlListGenerator Path(IFieldPath path)
{
_path = path;
return this;
}
/// <summary>
/// Creates a builder that can be used as a default for a field path.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public virtual ParameterBuilder GetDefault(IFieldPath path)
{
ParameterBuilder b;
if (path.Last.DataType == typeof(string))
b = new LikeBuilder(MatchMode.Anywhere);
else if (path.Last.DataType == typeof(DateTime))
b = new DateBetweenBuilder();
else if (IsNumeric(path.Last.DataType))
b = new BetweenBuilder();
else
b = new SimpleBuilder("=");
return new JunctionBuilder(JunctionType.Disjunction, b);
}
/// <summary>
/// Define a column to sort by. Any additional joins that are required to use these columns will be included.
/// Can be called multiple times.
/// </summary>
public virtual SqlGenerator OrderBy(IFieldPath path, SortDirection direction)
{
_orderBy.Add(new OrderedField(path, (direction == SortDirection.Ascending ? "ASC" : "DESC")));
return this;
}
public OrderedField(IFieldPath path, string direction)
{
Path = path;
Direction = direction;
}
public override IParameter Build(IFieldPath path, params object[] values)
{
return null;
}
public SqlString AddField(IFieldPath path)
{
Parts.Add(path);
return(this);
}
public NullParameter(IFieldPath path)
{
Path = path;
}
