Version: 2023.2
LanguageEnglish
  • C#

SearchExpression.ProcessValues

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Declaration

public static IEnumerable<SearchItem> ProcessValues(IEnumerable<SearchItem> items, string outputValueFieldName, Func<SearchItem,T> processHandler);

Parameters

items Group of items to transform.
outputValueFieldName Name of the field in the SearchItem to write the value to. If null, we write to the internal value of the item.
processHandler Transformer function that need to returns a new value for the item.

Returns

IEnumerable<SearchItem> Yield a new list of items that have been transformed.

Description

Take a group of SearchItems and apply a processHandler transformer function to the item in order to sets its internal value or an outputValueField. Note that these items are processed in the main thread thus allowing you to resolve any kind of selectors.

[Description("Convert arguments to a string allowing you to format the result.")]
[SearchExpressionEvaluator(SearchExpressionType.Selector | SearchExpressionType.Text, SearchExpressionType.Iterable | SearchExpressionType.Literal | SearchExpressionType.Variadic)]
[SearchExpressionEvaluatorSignatureOverload(SearchExpressionType.Iterable | SearchExpressionType.Literal | SearchExpressionType.Variadic)]
public static IEnumerable<SearchItem> FormatItems(SearchExpressionContext c)
{
    var skipCount = 0;
    if (SearchExpression.GetFormatString(c.args[0], out var formatStr))
        skipCount++;
    var items = c.args.Skip(skipCount).SelectMany(e => e.Execute(c));
    var dataSet = SearchExpression.ProcessValues(items, null, item => SearchExpression.FormatItem(c.search, item, formatStr));
    return dataSet;
}