private Evaluator CreateExpressionEvaluator()
{
var meta = new ExpressionMeta("VisualBasic");
// Expressions
string expression;
foreach (var candidate in GetPossibleExpressions())
{
if (LocalReportsEngineCommon.IsExpression(candidate, out expression))
{
meta.AddExpression(expression);
}
}
// TODO: Extensions
var extension = new Extension();
extension.Name = "Parameters";
extension.Instance = new ReadOnlyParameterCollection(ReportParameters);
meta.AddExtension(extension);
// TODO: Async compile in Evaluator
return(meta.Compile());
}
public object ResolveDataSet(RdlDataSet dataSetElement, bool adhoc)
{
var queryElement = dataSetElement.Query;
if (queryElement == null)
{
return(null);
}
var transactional = !adhoc && IsTransactional;
var command = (transactional ? TransactionConnection : AdHocConnection).CreateCommand();
command.CommandType = GetCommandType(queryElement.CommandType);
command.CommandText = queryElement.CommandText;
command.CommandTimeout = GetCommandTimeout(queryElement.Timeout);
command.Transaction = transactional ? Transaction : null;
foreach (var parameterElement in queryElement.QueryParameters)
{
var parameter = command.CreateParameter();
parameter.ParameterName = parameterElement.Name;
var value = LocalReportsEngineCommon.PhraseToValue(ReportMeta, RdlDataTypeEnum.String,
parameterElement.Value);
parameter.Value = value;
command.Parameters.Add(parameter);
}
using (var reader = command.ExecuteReader())
{
var dataTable = new DataTable();
dataTable.Load(reader);
return(dataTable);
}
}
private void ReportParameters_Resolve(object sender, ResolvableEventArgs <string, ReportParameter> args)
{
// Prompt the consumer first
var reportParameterElement =
ReportElement.ReportParameters.First(rp => rp.Name.SafeEqualsIgnoreCase(args.ResolvingKey));
args.ResolvedItem = LocalReportsEngineCommon.ElementToObject(reportParameterElement, this);
args.IsResolved = true;
}
private void DataSources_Resolve(object sender, ResolvableEventArgs <string, IResolvedDataSource> args)
{
// Prompt the user first
var dataSourceElement =
ReportElement.DataSources.First(ds => ds.Name.SafeEqualsIgnoreCase(args.ResolvingKey));
args.ResolvedItem = LocalReportsEngineCommon.ElementToObject(dataSourceElement, this);
args.IsResolved = true;
// We need to kick off this event, if the ds was resolved while the report was being refreshed
if (IsReportRefreshing)
{
args.ResolvedItem.OnReportRefreshing();
}
}
public void Initialize(RdlDataSource dataSourceElement, ReportMeta reportMeta)
{
DataSourceElement = dataSourceElement;
ReportMeta = reportMeta;
IsTransactional = LocalReportsEngineCommon.StringToBool(dataSourceElement.Transaction);
string factoryName;
lock (DbFactoryNames)
if (!DbFactoryNames.TryGetValue(dataSourceElement.ConnectionProperties.DataProvider, out factoryName))
{
throw new ArgumentOutOfRangeException("dataSourceElement",
"ConnectionProperties.DataProvider is unknown");
}
var providerFactory = DbProviderFactories.GetFactory(factoryName);
var connectionString = CreateConnectionString(dataSourceElement, providerFactory);
AdHocConnection = CreateConnection(providerFactory, connectionString);
TransactionConnection = IsTransactional ? CreateConnection(providerFactory, connectionString) : null;
}
private IEnumerable <Microsoft.Reporting.WinForms.ReportParameter> GetParameters()
{
foreach (var parameterElement in CurrentReportMeta.ReportElement.ReportParameters)
{
var parameter = new Microsoft.Reporting.WinForms.ReportParameter(parameterElement.Name);
var resolvedParameter = CurrentReportMeta.ReportParameters[parameter.Name];
if (resolvedParameter.MultiValue)
{
foreach (var value in (object[])resolvedParameter.Value)
{
parameter.Values.Add(LocalReportsEngineCommon.ValueToString(value, resolvedParameter.DataType));
}
}
else
{
parameter.Values.Add(LocalReportsEngineCommon.ValueToString(resolvedParameter.Value, resolvedParameter.DataType));
}
yield return(parameter);
}
}
public static ReportMeta Load(Stream stream)
{
var reportElement = LocalReportsEngineCommon.DeserializeReport(stream);
return(new ReportMeta(reportElement));
}
