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Feature #67: Advanced document template events

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OnGenerated and OnImportAttachment allow advanced users to enter
expressions which will be evaluated whenever these document
template/importing events are triggered. This enables greater
automation.
This commit is contained in:
Gary Sharp
2014-07-26 20:02:59 +10:00
parent c528a2be26
commit 1cc7e94646
32 changed files with 2179 additions and 1474 deletions
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Disco.BI/BI/Extensions/DocumentTemplateExtensions.cs
+74 -3
View File
@@ -75,16 +75,29 @@ namespace Disco.BI.Extensions
}
public static System.IO.Stream GeneratePdf(this DocumentTemplate dt, DiscoDataContext Database, object Data, User CreatorUser, System.DateTime TimeStamp, DocumentState State, bool FlattenFields = false)
{
return Interop.Pdf.PdfGenerator.GenerateFromTemplate(dt, Database, Data, CreatorUser, TimeStamp, State, FlattenFields);
bool generateExpression = !string.IsNullOrEmpty(dt.OnGenerateExpression);
string generateExpressionResult = null;
if (generateExpression)
generateExpressionResult = dt.EvaluateOnGenerateExpression(Data, Database, CreatorUser, TimeStamp, State);
var pdfStream = Interop.Pdf.PdfGenerator.GenerateFromTemplate(dt, Database, Data, CreatorUser, TimeStamp, State, FlattenFields);
if (generateExpression)
DocumentsLog.LogDocumentGenerated(dt, Data, CreatorUser, generateExpressionResult);
else
DocumentsLog.LogDocumentGenerated(dt, Data, CreatorUser);
return pdfStream;
}
public static Expression FilterExpressionFromCache(this DocumentTemplate dt)
{
return ExpressionCache.GetValue("DocumentTemplateFilterExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.FilterExpression, 0); });
return ExpressionCache.GetValue("DocumentTemplate_FilterExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.FilterExpression, 0); });
}
public static void FilterExpressionInvalidateCache(this DocumentTemplate dt)
{
ExpressionCache.InvalidateKey("DocumentTemplateFilterExpression", dt.Id);
ExpressionCache.InvalidateKey("DocumentTemplate_FilterExpression", dt.Id);
}
public static bool FilterExpressionMatches(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, System.DateTime TimeStamp, DocumentState State)
{
@@ -112,6 +125,64 @@ namespace Disco.BI.Extensions
}
return true;
}
public static Expression OnImportAttachmentExpressionFromCache(this DocumentTemplate dt)
{
return ExpressionCache.GetValue("DocumentTemplate_OnImportExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.OnImportAttachmentExpression, 0); });
}
public static void OnImportAttachmentExpressionInvalidateCache(this DocumentTemplate dt)
{
ExpressionCache.InvalidateKey("DocumentTemplate_OnImportExpression", dt.Id);
}
public static string EvaluateOnAttachmentImportExpression(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, System.DateTime TimeStamp)
{
if (!string.IsNullOrEmpty(dt.OnImportAttachmentExpression))
{
Expression compiledExpression = dt.OnImportAttachmentExpressionFromCache();
System.Collections.IDictionary evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, null);
try
{
object result = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
if (result == null)
return null;
else
return result.ToString();
}
catch
{
throw;
}
}
return null;
}
public static Expression OnGenerateExpressionFromCache(this DocumentTemplate dt)
{
return ExpressionCache.GetValue("DocumentTemplate_OnGenerateExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.OnGenerateExpression, 0); });
}
public static void OnGenerateExpressionInvalidateCache(this DocumentTemplate dt)
{
ExpressionCache.InvalidateKey("DocumentTemplate_OnGenerateExpression", dt.Id);
}
public static string EvaluateOnGenerateExpression(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, System.DateTime TimeStamp, DocumentState State)
{
if (!string.IsNullOrEmpty(dt.OnGenerateExpression))
{
Expression compiledExpression = dt.OnGenerateExpressionFromCache();
System.Collections.IDictionary evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, State);
try
{
object result = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
return result.ToString();
}
catch
{
throw;
}
}
return null;
}
public static string GetDataId(this DocumentTemplate dt, object Data)
{
if (Data is string)