public static StandardResult <SimpleTable> Execute(SimpleTable sourceTable, SimpleTable expandTable)
{
if (sourceTable == null)
{
return(StandardResult <SimpleTable> .ReturnError("ExpandTable() error: source table null"));
}
if (expandTable == null)
{
return(StandardResult <SimpleTable> .ReturnError("ExpandTable() error: aggregate table null"));
}
var newTable = sourceTable.Copy();
// create columns
foreach (var map in expandTable)
{
var source = map["source"];
var destination = map["destination"];
newTable.AddColumnName(destination);
var expression = ExpressionCache.Compile(source);
if (expression == null)
{
return(StandardResult <SimpleTable> .ReturnError("AggregateTable() error: evaluator returns null", "Source: " + source));
}
}
var fieldSource = new FieldDataSource();
foreach (var newRow in newTable)
{
fieldSource.Row = newRow;
foreach (var map in expandTable)
{
var source = map["source"];
var destination = map["destination"];
var expression = ExpressionCache.Compile(source);
var result = expression.Evaluate(new Context()
{
FieldSource = fieldSource
});
if (result.IsError)
{
return(StandardResult <SimpleTable> .ReturnError("ExpandTable() error: occurred during evaluating: " + expression.Parser.Tokenizer.Expression, result.String));
}
newRow[destination] = ToString(result);
}
}
return(StandardResult <SimpleTable> .ReturnResult(newTable));
}
public static StandardResult <SimpleTable> Execute(SimpleTable table, string includeExpression)
{
if (string.IsNullOrWhiteSpace(includeExpression))
{
return(StandardResult <SimpleTable> .ReturnResult(table.Copy()));
}
var newTable = new SimpleTable();
foreach (var column in table.ColumnNames)
{
newTable.AddColumnName(column);
}
var fieldSource = new FieldDataSource();
var expression = ExpressionCache.Compile(includeExpression);
foreach (var sourceRow in table)
{
fieldSource.Row = sourceRow;
if (string.IsNullOrWhiteSpace(includeExpression))
{
continue;
}
var result = expression.Evaluate(new Context()
{
FieldSource = fieldSource
});
if (!expression.IsValid)
{
return(StandardResult <SimpleTable> .ReturnError("FilterTable() error: occurred during evaluating: " + expression.Parser.Tokenizer.Expression, "invalid result: " + result.String));
}
if (!result.IsBoolean)
{
return(StandardResult <SimpleTable> .ReturnError("FilterTable() error: occurred during evaluating: " + expression.Parser.Tokenizer.Expression, "result was not boolean: " + result.String));
}
if (!result.Boolean)
{
continue;
}
var newRow = newTable.CreateRow();
for (int i = 0; i < sourceRow.ColumnCount; i++)
{
var value = sourceRow[i];
if (value == null)
{
continue;
}
newRow[i] = value;
}
}
return(StandardResult <SimpleTable> .ReturnResult(newTable));
}