/// <summary>
/// Validates row names and value types against schema
/// </summary>
/// <param name="schema"></param>
/// <returns></returns>
public virtual Exception Validate(ResultSetSchema schema)
{
schema.ThrowIfNull("schema");
var ex = schema.Validate(true);
if (ex != null)
{
return(new InvalidOperationException("Invalid schema", ex));
}
ex = CheckForEmptyValuesWithoutColumnName();
if (ex != null)
{
return(ex);
}
ex = CheckForInvalidCOlumnNames(schema);
if (ex != null)
{
return(ex);
}
ex = CheckForInvalidValueTypes(schema);
if (ex != null)
{
return(ex);
}
return(null); // nothing to validate here TODO: validate against given schema!!
}
private Exception CheckForInvalidCOlumnNames(ResultSetSchema schema)
{
var columnName = this.Keys.Where(key => !schema.Columns.Any(column => column.Name == key)).FirstOrDefault();
if (columnName != null)
{
return(new InvalidOperationException($"Column '{columnName}' is not defined in schema"));
}
return(null);
}
private Exception CheckForInvalidValueTypes(ResultSetSchema schema)
{
var invalidColumn = this.Where(kv => schema.Columns.Any(column => column.Name == kv.Key && kv.Value != null && kv.Value != DBNull.Value && kv.Value.GetType() != column.ClrType))
.Select(kv => new { ColumnName = kv.Key, ValueType = kv.Value.GetType().FullName }).FirstOrDefault();
if (invalidColumn != null)
{
return(new InvalidOperationException($"Value for '{ invalidColumn.ColumnName}' is of type '{invalidColumn.ValueType}' while schema defines type '{schema.GetColumn(invalidColumn.ColumnName).ClrType.FullName}'"));
}
return(null);
}
public virtual Exception Validate(ResultSetSchema schema, bool recursive = false)
{
schema.ThrowIfNull("schema");
if (recursive)
{
foreach (var row in this)
{
var ex = row.Validate(schema);
if (ex != null)
{
return(new InvalidOperationException("Found invalid row(s)", ex));
}
}
}
return(null);
}
