private void VerifySource(Column sourceColumn, string paramName)
{
sourceColumn.VerifyNotNull(paramName);
var sourceModels = sourceColumn.ScalarSourceModels;
foreach (var sourceModel in sourceModels)
{
if (sourceModel != _sourceModel && sourceModel != _targetModel)
{
throw new ArgumentException(DiagnosticMessages.ColumnMapper_InvalidSourceParentModelSet(sourceModel), paramName);
}
}
}
private void VerifyScalarSourceModels(IModels containsBy, Column sourceColumn, string exceptionParamName)
{
if (sourceColumn.ScalarSourceModels.Count == 0 && sourceColumn.GetExpression() == null)
{
throw new ArgumentException(DiagnosticMessages.Column_EmptyScalarSourceModels, exceptionParamName);
}
foreach (var model in sourceColumn.ScalarSourceModels)
{
if (!containsBy.Contains(model))
{
throw new ArgumentException(DiagnosticMessages.DbQueryBuilder_InvalidScalarSourceModel(model), exceptionParamName);
}
}
}
private static DataRow Deserialize(DataRow parentDataRow, string input, int inputIndex)
{
var dataRowPathEndIndex = inputIndex;
var childModelName = ExpectString(input, ref inputIndex, '/', '[');
var leftSquareBracketIndex = inputIndex - 1;
var dataRowOrdinal = ExpectInt(input, ref inputIndex, ']');
if (!(parentDataRow.Model[childModelName] is Model childModel))
{
throw new FormatException(DiagnosticMessages.DataRow_FromString_InvalidChildModelName(childModelName, input.Substring(0, dataRowPathEndIndex)));
}
var result = GetDataRow(parentDataRow[childModel], dataRowOrdinal, input, leftSquareBracketIndex);
return(inputIndex == input.Length ? result : Deserialize(result, input, inputIndex));
}
internal void Add(Column item)
{
Debug.Assert(Model.DesignMode);
var columns = Columns;
if (columns.Contains(item.FullName))
{
throw new InvalidOperationException(DiagnosticMessages.ColumnCollection_DuplicateModelId(item.DeclaringType, item.FullName));
}
columns.Add(item);
if (item.IsSystem)
{
SystemColumnCount++;
}
}
private static string ExpectString(string input, ref int inputIndex, char endChar)
{
var startIndex = inputIndex;
while (inputIndex < input.Length && input[inputIndex] != endChar)
{
inputIndex++;
}
if (inputIndex == input.Length)
{
throw new FormatException(DiagnosticMessages.DataRow_FromString_ExpectChar(endChar, input.Substring(0, startIndex)));
}
var result = input.Substring(startIndex, inputIndex - startIndex);
inputIndex++;
return(result);
}
/// <summary>Build the <see cref="ColumnMapping"/> between source column and target column ordinal.</summary>
/// <param name="targetColumnOrdinal">The target column ordinal.</param>
/// <param name="sourceColumn">The source column.</param>
/// <returns>This <see cref="ColumnMapper"/>.</returns>
public ColumnMapper Select(Column sourceColumn, int targetColumnOrdinal)
{
var targetColumns = _targetModel.Columns;
if (targetColumnOrdinal < 0 || targetColumnOrdinal >= targetColumns.Count)
{
throw new ArgumentOutOfRangeException(nameof(targetColumnOrdinal));
}
var targetColumn = targetColumns[targetColumnOrdinal];
VerifySource(sourceColumn, nameof(sourceColumn));
if (sourceColumn.DataType != targetColumn.DataType)
{
throw new ArgumentException(DiagnosticMessages.ColumnMapper_InvalidSourceDataType(sourceColumn.DataType, targetColumn.DataType), nameof(sourceColumn));
}
_result.Add(new ColumnMapping(sourceColumn, targetColumn));
return(this);
}
private void MergeComputation(Column baseColumn, Column computationColumn, bool isDirect)
{
if (baseColumn == computationColumn)
{
throw new InvalidOperationException(DiagnosticMessages.ComputationManager_CircularComputation(baseColumn.Name));
}
if (baseColumn.ParentModel != null)
{
_computationManager.AddDependency(baseColumn, computationColumn, isDirect);
isDirect = false;
}
if (baseColumn.IsExpression)
{
var baseBaseColumns = baseColumn.GetExpression().BaseColumns;
foreach (var baseBaseColumn in baseBaseColumns)
{
MergeComputation(baseBaseColumn, computationColumn, isDirect);
}
}
}
