public void Parse(SelectContext ctx)
{
//var result = new SelectContext();
//if (ctx == null)
//{
// result.ContextType = ContextType.Program;
//}
//SelectAtomContext.Context_Stack.Push(result);
foreach (var atom in Select_atoms)
{
var a = new SelectAtomContext();
ctx.Unions.Add(new UnionContext() { Context = a });
atom.Parse(a);
}
for (var index = 0; index < this.Union_types.Count; index++)
{
ctx.Unions[index].UnionType = Union_types[index].Parse();
}
//result.ParentContext = ctx;
//SelectAtomContext.Context_Stack.Pop();
//return result;
}
DependencyProperty.Register("ExclusiveItems", typeof(Collection <object>), typeof(EnumTypeSelector), new UIPropertyMetadata(null)); // NOXLATE
#endregion
protected override void UpdateContexts(IEnumerable <DynamicValue> validValueItemHint)
{
if (this.Contexts.Count > 0)
{
return;
}
SelectContext context = CreateContext(this.EnumType, RuleEditingContext, this, this.SelectContextName, ExclusiveItems);
this.Contexts.Add(context);
}
public ReWriteResult(IQueryable <T> originalQueryable, IQueryable <T> reWriteQueryable, int?skip, int?take, IEnumerable <PropertyOrder> orders, SelectContext selectContext, GroupByContext groupByContext)
{
OriginalQueryable = originalQueryable;
ReWriteQueryable = reWriteQueryable;
Skip = skip;
Take = take;
Orders = orders;
SelectContext = selectContext;
GroupByContext = groupByContext;
}
public async Task ProcessAsync_SelectedAttributeExplicitlySet_IgnoresModelExpression()
{
// Arrange
var modelValue = "bar";
var modelExplorer = new EmptyModelMetadataProvider().GetModelExplorerForType(typeof(Model), new Model()
{
SimpleProperty = modelValue
})
.GetExplorerForProperty(nameof(Model.SimpleProperty));
var viewContext = new ViewContext();
var modelExpression = nameof(Model.SimpleProperty);
var modelHelper = new Mock <IModelHelper>();
modelHelper.Setup(mock => mock.GetModelValue(viewContext, modelExplorer, modelExpression)).Returns(modelValue);
var selectContext = new SelectContext(aspFor: new ModelExpression(modelExpression, modelExplorer));
var context = new TagHelperContext(
tagName: "govuk-select-item",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(SelectContext), selectContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-select-item",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml(new HtmlString("Item text"));
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new SelectItemTagHelper(modelHelper.Object)
{
Selected = false,
Value = modelValue,
ViewContext = viewContext
};
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Collection(
selectContext.Items,
item =>
{
Assert.False(item.Selected);
});
}
/// <summary>
/// Generate a drop down list.
/// </summary>
/// <typeparam name="TProperty">The type of the property.</typeparam>
/// <param name="property">The property.</param>
/// <param name="items">The items.</param>
/// <param name="selectedItem">The selected item.</param>
/// <param name="htmlAttributes">The HTML attributes.</param>
/// <returns></returns>
public virtual MvcHtmlString DropdownFor <TProperty>(Expression <Func <TModel, TProperty> > property,
IEnumerable <SelectListItem> items,
object selectedItem = null, object htmlAttributes = null)
{
var ctx = CreateInputContext(property, htmlAttributes);
var context = new SelectContext(ctx, null, items);
var builder = _tagBuilderFactory.Create("select");
var generatedTags = builder.Generate(context);
return(InvokeFormItemAdapters(context.Metadata, generatedTags).ToMvcString());
}
/*
* public virtual MvcHtmlString DropdownFor<TProperty>(Expression<Func<TModel, TProperty>> property,
* IEnumerable<TProperty> items,
* object selectedItem = null,
* object htmlAttributes = null)
* where TFormatter : ISelectItemFormatter, new()
* {
* var ctx = CreateInputContext(property, htmlAttributes);
* var context = new SelectContext(ctx, new TFormatter(), items);
* var generatedTags = _selectGenerator.Generate(context);
* return InvokeFormItemAdapters(context.Metadata, generatedTags).ToMvcString();
*
* }*/
/// <summary>
/// Dropdowns for.
/// </summary>
/// <typeparam name="TProperty">The type of the property.</typeparam>
/// <param name="property">The property.</param>
/// <param name="htmlAttributes">The HTML attributes.</param>
/// <returns></returns>
public virtual MvcHtmlString DropdownFor <TProperty>(Expression <Func <TModel, TProperty> > property,
object htmlAttributes = null)
where TProperty : struct, IConvertible, IFormattable, IComparable
{
var ctx = CreateInputContext(property, htmlAttributes);
var context = new SelectContext(ctx, null, null);
var builder = _tagBuilderFactory.Create("select");
var generatedTags = builder.Generate(context);
return(InvokeFormItemAdapters(context.Metadata, generatedTags).ToMvcString());
}
private IExpression GetExpression(SelectContext context, AssociationClassCallExp association)
{
switch (association.Source)
{
case VariableExp variableRef:
var variable = variableRef.ReferredVariable.Name;
var associationEnd = association.ReferredAssociationEnds;
var alias = variable + "_" + associationEnd.Association;
context.Body.Joins.Add(new Join
{
Left = false,
RightItem = new Table
{
Name = associationEnd.Association,
Alias = new Alias {
Name = alias
}
},
OnExp = new EqualsToExpression
{
LeftExp = new Column
{
Table = new Table
{
Name = context.Variables[variable],
Alias = new Alias {
Name = variable
}
},
Name = context.Variables[variable] + "_id",
},
RightExp = new Column
{
Table = new Table
{
Name = associationEnd.Association,
Alias = new Alias {
Name = alias
}
},
Name = associationEnd.Opp.Name,
}
}
});
context.LastJoin = Tuple.Create(variable, associationEnd);
return(null);
default:
throw new NotSupportedException();
}
}
public SelectResult Merge(SelectResult[] partitionResults)
{
SelectContext localContext = SafeGetContext(null);
if (localContext.Pass1Results != null)
{
if (localContext.Pass1Results.Details.Succeeded == false || localContext.Pass1Results.CountReturned == 0)
{
return(localContext.Pass1Results);
}
}
return(localContext.Merge(partitionResults));
}
public SelectResult Compute(Partition p)
{
SelectContext localContext = SafeGetContext(p);
if (localContext.Pass1Results != null)
{
if (localContext.Pass1Results.Details.Succeeded == false || localContext.Pass1Results.CountReturned == 0)
{
return(localContext.Pass1Results);
}
}
return(localContext.Compute(p));
}
private IExpression GetExpression(SelectContext context, IteratorExp iterator)
{
GetExpression(context, (dynamic)iterator.Source);
var alias = iterator.Iterator[0].Name;
if (iterator.Source is OperationCallExp operationCall && operationCall.ReferredOperation == Operator.AllInstances)
{
var table = context.Body.FromItem as Table;
table.Alias = new Alias
{
Name = alias
};
context.Variables.Add(alias, table.Name);
}
private IExpression GetExpression(SelectContext context, BooleanLiteralExp booleanLiteral)
{
return(new EqualsToExpression
{
LeftExp = new LongValue
{
Value = 1
},
RightExp = new LongValue
{
Value = booleanLiteral.BooleanValue.GetValueOrDefault() ? 1 : 0
}
});
}
private static ushort[] GetLIDsToReturnSparse(Partition p, SelectContext context, SelectResult result, ShortSet whereSet)
{
// Get the set of matching IDs
ushort[] lids = whereSet.Values;
// Lame - store the total to return here so we don't have to compute again
result.Total = (uint)(lids.Length);
// Compute the count to return - the count or the number left after skipping
int countToReturn = Math.Min(context.Count, (int)(lids.Length));
// Get the values for all matches in the Order By column and IDs by the order by values
Array orderByValues = p.Columns[context.OrderByColumn].GetValues(lids);
Array.Sort(orderByValues, lids);
// Walk in ascending or descending order and return the matches
int count = 0;
ushort[] lidsToReturn = new ushort[countToReturn];
if (countToReturn == 0)
{
return(lidsToReturn);
}
int index, end, step;
if (context.OrderByDescending)
{
index = (int)(lids.Length - 1);
end = index - countToReturn;
step = -1;
}
else
{
index = 0;
end = index + countToReturn;
step = 1;
}
for (; index != end; index += step)
{
lidsToReturn[count] = lids[index];
count++;
}
return(lidsToReturn);
}
public void SetLabel_AlreadyGotItem_ThrowsInvalidOperationException()
{
// Arrange
var context = new SelectContext(aspFor: null);
context.AddItem(new SelectItem()
{
Content = new HtmlString("Option")
});
// Act
var ex = Record.Exception(() => context.SetLabel(false, null, new HtmlString("Error")));
// Assert
Assert.IsType <InvalidOperationException>(ex);
Assert.Equal("<govuk-select-label> must be specified before <govuk-select-item>.", ex.Message);
}
private SelectContext SafeGetContext(Partition p)
{
SelectContext ctx = _context;
if (ctx == null)
{
// This case should only happen for unit tests
ctx = new SelectContext(this);
if (p != null && string.IsNullOrEmpty(this.OrderByColumn))
{
ctx.OrderByColumn = p.IDColumn.Name;
ctx.OrderByDescending = true;
}
}
return(ctx);
}
public async Task ProcessAsync_AddItemsToContext()
{
// Arrange
var selectContext = new SelectContext(aspFor: null);
var context = new TagHelperContext(
tagName: "govuk-select-item",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(SelectContext), selectContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-select-item",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml(new HtmlString("Item text"));
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new SelectItemTagHelper()
{
Disabled = true,
Selected = true,
Value = "value"
};
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Collection(
selectContext.Items,
item =>
{
Assert.Equal("Item text", item.Content.RenderToString());
Assert.True(item.Disabled);
Assert.True(item.Selected);
Assert.Equal("value", item.Value);
});
}
public static bool TryVisitSelect(this MethodCallExpression node, SelectExpressionsCollection options, MemberContext context, out MemberContext newContext)
{
newContext = null;
bool result = node.Method.DeclaringType == typeof(Queryable) && node.Method.Name == Select;
if (result)
{
Expression arg = node.Arguments[1];
if (arg.NodeType == ExpressionType.Quote)
{
LambdaExpression lambda = (LambdaExpression)node.Arguments[1].StripQuotes();
if (lambda.Body is NewExpression selectMember)
{
newContext = new SelectContext(selectMember, context);
}
if (lambda.Body is MemberInitExpression memberInit)
{
newContext = new SelectContext(memberInit, context);
}
if (lambda.Body is ParameterExpression)
{
newContext = context;
return(result);
}
if (newContext != null)
{
options.Fields.Clear();
SelectFieldsVisitor visitor = new SelectFieldsVisitor(context, options);
visitor.Visit(lambda.Body);
return(result);
}
}
throw new InvalidOperationException($"Unable to translate '{Select}' method.");
}
return(result);
}
private static ushort[] GetLIDsToReturnDense(Partition p, SelectContext context, SelectResult result, ShortSet whereSet)
{
// Get the sorted IDs, *if available*
IList <ushort> sortedLIDs;
int sortedLIDsCount;
IColumn <object> orderByColumn = p.Columns[context.OrderByColumn];
if (!orderByColumn.TryGetSortedIndexes(out sortedLIDs, out sortedLIDsCount))
{
return(GetLIDsToReturnSparse(p, context, result, whereSet));
}
// Determine how many to return. Stop if none.
int countToReturn = Math.Min(context.Count, (int)(result.Total));
ushort[] lidsToReturn = new ushort[countToReturn];
if (countToReturn == 0)
{
return(lidsToReturn);
}
// Enumerate matches in OrderBy order and return the requested columns for them
ushort countAdded = 0;
int sortedIndex = (context.OrderByDescending ? orderByColumn.Count - 1 : 0);
int lastIndex = (context.OrderByDescending ? -1 : orderByColumn.Count);
int step = (context.OrderByDescending ? -1 : 1);
// Return the next 'count' matches
for (; sortedIndex != lastIndex; sortedIndex += step)
{
ushort lid = sortedLIDs[sortedIndex];
if (whereSet.Contains(lid))
{
lidsToReturn[countAdded] = lid;
if (++countAdded == countToReturn)
{
break;
}
}
}
return(lidsToReturn);
}
private IExpression GetAllInstances(SelectContext context, IEntity referredType)
{
var table = new Table
{
Name = referredType.Name,
};
if (context.Body.FromItem == null)
{
context.Body.FromItem = table;
}
else
{
context.Body.Joins.Add(new Join
{
RightItem = table
});
}
return(null);
}
public SelectStatement ToSql(IOclExpression expression)
{
var context = new SelectContext {
Body = new PlainSelect()
};
var result = GetExpression(context, (dynamic)expression);
var body = context.Body;
body.SelItems.Add(new SelectItem
{
Exp = result,
Alias = new Alias
{
Name = "res"
}
});
Complete(body, context);
return(new SelectStatement
{
SelectBody = body
});
}
public SelectResult Merge(SelectResult[] partitionResults)
{
SelectContext localContext = SafeGetContext(null);
if (localContext.Pass1Results != null)
{
if (localContext.Pass1Results.Details.Succeeded == false || localContext.Pass1Results.CountReturned == 0)
{
return(localContext.Pass1Results);
}
}
SelectResult result = localContext.Merge(partitionResults);
if (localContext.Pass1Results != null)
{
// If this isn't the first pass, use the total from the first pass
result.Total = localContext.Pass1Results.Total;
}
return(result);
}
private IExpression GetExpression(SelectContext context, PropertyCallExp propertyCall)
{
switch (propertyCall.Source)
{
case VariableExp variableRef:
var table = context.Variables[variableRef.ReferredVariable.Name];
return(new Column
{
Table = new Table
{
Name = table,
Alias = new Alias
{
Name = variableRef.ReferredVariable.Name
}
},
Name = propertyCall.ReferredProperty.Name
});
default:
throw new NotSupportedException();
}
}
private static async Task _enumerate(AsyncEnumerator <TResult> .Yield yield, SelectContext <TSource, TResult> context)
{
try
{
while (await context.Source.MoveNextAsync(yield.CancellationToken).ConfigureAwait(false))
{
await yield.ReturnAsync(context.Selector(context.Source.Current)).ConfigureAwait(false);
}
}
finally
{
if (context.DisposeSource)
{
context.Source.Dispose();
}
}
}
private void SetSelect(SelectContext select, string name, string varName)
{
if (select != null)
{
var dq = new DataCube(name, DataStatement.SELECT, varName);
FieldsContext fields = select.fields();
FilterconditionContext Filtercondition = select.filtercondition();
SortstatementContext sortStatement = select.sortstatement();
if (fields != null)
{
StringltrContext[] fieldStrings = fields.stringltr();
if (fieldStrings != null)
{
foreach (StringltrContext sc in fieldStrings)
{
if (sc.strings() != null)
{
var ss = sc.strings().GetText();
if (ss.IndexOf(":") > 0)
{
var sf = ss.Split(':');
dq.SelectStatement.AddField(new State.Field.StringField(sf[0], sf[1]));
}
else
{
dq.SelectStatement.AddField(new State.Field.StringField(ss, ss));
}
}
else if (sc.datefunction() != null)
{
DatefunctionContext df = sc.datefunction();
dq.SelectStatement.AddField(new State.Field.DateField(df.WORD().GetText(), sc.WORD().GetText())
{
Function = getDateFunction(df.DATEFUNCTION().GetText())
});
}
else if (sc.dateadvancefunction() != null)
{
DateadvancefunctionContext df = sc.dateadvancefunction();
var dfield = GetDateField(df);
dfield.AliasName = sc.WORD().GetText();
dq.SelectStatement.AddField(dfield);
}
else if (sc.numberfunction() != null)
{
NumberfunctionContext nf = sc.numberfunction();
State.Field.NumberField.FunctionType nft = getNumFunction(nf.NUMBERUDF().GetText());
string fm = "";
if (nft == State.Field.NumberField.FunctionType.NUMBERFORMAT || nft == State.Field.NumberField.FunctionType.ROUND)
{
// fm = nf.dataformat().INT().GetText().ToString();
}
dq.SelectStatement.AddField(new State.Field.NumberField(nf.WORD().GetText(), sc.WORD().GetText())
{
Function = getNumFunction(nf.NUMBERUDF().GetText()), Format = fm
});
}
else if (sc.numberformat() != null)
{
NumberformatContext nf = sc.numberformat();
State.Field.NumberField.FunctionType nft = getNumFunction(nf.NUMBERUDF().GetText());
string fm = "";
if (nft == State.Field.NumberField.FunctionType.NUMBERFORMAT || nft == State.Field.NumberField.FunctionType.ROUND)
{
fm = nf.INT().GetText().ToString();
}
dq.SelectStatement.AddField(new State.Field.NumberField(nf.WORD().GetText(), sc.WORD().GetText())
{
Function = getNumFunction(nf.NUMBERUDF().GetText()), Format = fm
});
}
else if (sc.stringfunction() != null)
{
StringfunctionContext df = sc.stringfunction();
State.Field.StringField.FunctionType nft = getStringFunction(df.STRINGUDF().GetText());
//string fm = "";
//if (nft == State.Field.StringField.FunctionType.FORMAT)
//{
// fm = df.dataformat().INT().GetText().ToString();
//}
dq.SelectStatement.AddField(new State.Field.StringField(df.WORD().GetText(), sc.WORD().GetText())
{
Function = getStringFunction(df.STRINGUDF().GetText()), Format = ""
});
}
else if (sc.stringformat() != null)
{
StringformatContext df = sc.stringformat();
State.Field.StringField.FunctionType nft = State.Field.StringField.FunctionType.FORMAT;
string fm = "";
if (nft == State.Field.StringField.FunctionType.FORMAT)
{
fm = df.TEXT().GetText();
}
dq.SelectStatement.AddField(new State.Field.StringField(df.WORD().GetText(), sc.WORD().GetText())
{
Function = nft, Format = fm
});
}
}
}
}
if (Filtercondition != null)
{
ConditionContext condition = Filtercondition.condition();
var search = new State.Search(condition.children[0].GetText(), condition.children[1].GetText(), condition.children[2].GetText());
dq.SelectStatement.AddCondition(search);
}
if (sortStatement != null)
{
OrderContext order = sortStatement.order();
dq.SelectStatement.AddOrder(new State.SortBy(order.ORDERBY()[0].GetText(), order.fields()[0].GetText()));
}
DataCubes.Add(dq);
}
}
private IExpression GetExpression(SelectContext context, VariableExp variableExp)
{
return(CreateColumn(context.Variables[variableExp.ReferredVariable.Name], variableExp.ReferredVariable.Name));
}
public QueryAstBuilder()
{
_selectContext = new SelectContext(this);
_returnContext = new ReturnContext(this);
}
public QuerySelectDiscoverVisitor(SelectContext selectContext)
{
_selectContext = selectContext;
}
private static async Task _enumerate(AsyncEnumerator <TResult> .Yield yield, SelectContext <TSource, TResult> context)
{
using (var enumerator = await context.Source.GetAsyncEnumeratorAsync(yield.CancellationToken).ConfigureAwait(false))
{
while (await enumerator.MoveNextAsync(yield.CancellationToken).ConfigureAwait(false))
{
await yield.ReturnAsync(context.Selector(enumerator.Current)).ConfigureAwait(false);
}
}
}
