public QaValidUrls(
[Doc(nameof(DocStrings.QaValidUrls_table))][NotNull] ITable table,
[Doc(nameof(DocStrings.QaValidUrls_urlExpression))][NotNull]
string urlExpression)
: base(table)
{
Assert.ArgumentNotNull(table, nameof(table));
Assert.ArgumentNotNullOrEmpty(urlExpression, nameof(urlExpression));
_table = table;
_urlExpression = urlExpression;
_maximumParallelTasks = _defaultMaximumParallelTasks;
// if the url expression is a single field, then direclty read from the field
// (by the field index determined here)
// Use the infrastructure for expression evaluation only if the url expression
// is really a sql expression involving more than one field name
// and/or functions, literals etc.,
List <string> tokens = ExpressionUtils.GetExpressionTokens(urlExpression).ToList();
_isSingleField = false;
if (tokens.Count == 1)
{
int fieldIndex = table.FindField(urlExpression);
if (fieldIndex < 0)
{
throw new ArgumentException(
string.Format("Field not found in table {0}: {1}",
DatasetUtils.GetName(table),
urlExpression), nameof(urlExpression));
}
// the url expression is a single field name
_fieldIndex = fieldIndex;
_isSingleField = true;
_affectedComponent = urlExpression.ToUpper().Trim();
}
if (!_isSingleField)
{
List <string> fieldNames = ExpressionUtils.GetExpressionFieldNames(
_table, _urlExpression).ToList();
if (fieldNames.Count == 0)
{
throw new ArgumentException(
$@"Invalid expression: {urlExpression}",
nameof(urlExpression));
}
if (fieldNames.Count == 1)
{
_affectedComponent = fieldNames[0].ToUpper().Trim();
}
}
}
public static TableView Create([NotNull] ITable table,
[CanBeNull] string expression,
bool useAsConstraint,
bool caseSensitive = false)
{
Assert.ArgumentNotNull(table, nameof(table));
if (expression == null || expression.Trim().Length == 0)
{
// this filter helper won't do much
return(new TableView(new ColumnInfo[] { }, null));
}
// read/remove case sensitivity override from expression
bool?caseSensitivityOverride;
expression = ExpressionUtils.ParseCaseSensitivityHint(expression,
out caseSensitivityOverride);
if (caseSensitivityOverride != null)
{
caseSensitive = caseSensitivityOverride.Value;
}
var columnInfos = new List <ColumnInfo>();
var addedFields = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
IFields fields = table.Fields;
if (table.HasOID)
{
string oidFieldName = table.OIDFieldName.ToUpper();
int fieldIndex = table.FindField(oidFieldName);
IField field = fields.Field[fieldIndex];
columnInfos.Add(new FieldColumnInfo(table, field, fieldIndex));
addedFields.Add(oidFieldName);
}
var factory = new ColumnInfoFactory(table);
foreach (string token in ExpressionUtils.GetExpressionTokens(expression))
{
if (addedFields.Contains(token))
{
continue;
}
ColumnInfo columnInfo = factory.GetColumnInfo(token);
if (columnInfo != null)
{
columnInfos.Add(columnInfo);
addedFields.Add(token);
}
}
var dataTable = new DataTable(DatasetUtils.GetName(table))
{
CaseSensitive = caseSensitive
};
foreach (ColumnInfo columnInfo in columnInfos)
{
dataTable.Columns.Add(columnInfo.ColumnName, columnInfo.ColumnType);
}
var dataView = new DataView(dataTable);
if (useAsConstraint)
{
dataView.RowFilter = expression;
}
return(new TableView(columnInfos, dataView));
}
public static MultiTableView Create(
[NotNull] IList <ITable> tables,
[NotNull] IList <string> tableAliases,
[NotNull] string expression,
bool caseSensitive = false,
[CanBeNull] Action <Action <string, Type>, IList <ITable> > customizeDataTable = null,
bool useAsConstraint = true)
{
Assert.ArgumentNotNull(tables, nameof(tables));
Assert.ArgumentNotNull(tableAliases, nameof(tableAliases));
Assert.ArgumentNotNull(expression, nameof(expression));
if (tables.Count != tableAliases.Count)
{
throw new ArgumentException(
string.Format("Equal number of tables({0}) and aliases({1}) expected",
tables.Count, tableAliases.Count));
}
// read/remove case sensitivity override from expression
bool?caseSensitivityOverride;
expression = ExpressionUtils.ParseCaseSensitivityHint(expression,
out caseSensitivityOverride);
if (caseSensitivityOverride != null)
{
caseSensitive = caseSensitivityOverride.Value;
}
List <string> upperCaseTableAliases = tableAliases.Select(alias => alias.ToUpper())
.ToList();
var tableAliasIndexes = new List <int>();
var dataTable = new DataTable {
CaseSensitive = caseSensitive
};
List <ColumnInfoFactory> factories =
tables.Select(table => new ColumnInfoFactory(table)).ToList();
var columnInfos = new List <ColumnInfo>();
var addedFields = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
const bool toUpper = true;
foreach (string expressionToken in
ExpressionUtils.GetExpressionTokens(expression, toUpper))
{
if (addedFields.Contains(expressionToken))
{
continue;
}
int tableAliasIndex;
ColumnInfo columnInfo = TryGetColumnInfo(upperCaseTableAliases,
factories,
expressionToken,
out tableAliasIndex);
if (columnInfo == null)
{
continue;
}
columnInfos.Add(columnInfo);
// add column using fully qualified name
dataTable.Columns.Add(expressionToken, columnInfo.ColumnType);
tableAliasIndexes.Add(tableAliasIndex);
addedFields.Add(expressionToken);
}
customizeDataTable?.Invoke(
(columnName, type) => dataTable.Columns.Add(columnName, type),
tables);
var dataView = new DataView(dataTable);
if (useAsConstraint)
{
dataView.RowFilter = expression;
}
return(new MultiTableView(columnInfos, tableAliasIndexes, dataView));
}
public string ToString([NotNull] IRow row,
bool constraintOnly,
[CanBeNull] ICollection <string> addedConstraintFieldNames)
{
DataView dataView = ConstraintView;
if (dataView == null)
{
return(string.Empty);
}
var sb = new StringBuilder();
CreateDataRow(row, ColumnInfos);
DataTable dataTable = dataView.Table;
if (constraintOnly)
{
foreach (string fieldNameCandidate in
ExpressionUtils.GetExpressionTokens(dataView.RowFilter))
{
int columnIndex = dataTable.Columns.IndexOf(fieldNameCandidate);
if (columnIndex < 0 || columnIndex >= ColumnInfos.Count)
{
continue;
}
// the candidate matches an existing column
if (addedConstraintFieldNames != null)
{
if (addedConstraintFieldNames.Contains(fieldNameCandidate))
{
continue;
}
addedConstraintFieldNames.Add(fieldNameCandidate);
}
if (sb.Length > 0)
{
sb.Append("; ");
}
ColumnInfo columnInfo = GetColumnInfo(columnIndex);
sb.AppendFormat("{0} = {1}",
GetDataTableColumnName(columnIndex),
columnInfo.FormatValue(row));
}
}
else
{
var columnIndex = 0;
foreach (ColumnInfo columnInfo in ColumnInfos)
{
if (sb.Length > 0)
{
sb.Append("; ");
}
sb.AppendFormat("{0} = {1}",
GetDataTableColumnName(columnIndex),
columnInfo.FormatValue(row));
columnIndex++;
}
}
return(sb.ToString());
}
