/// <summary>
/// Extracts measure names from database object.
/// </summary>
/// <param name="tableName">Specifies a table that will limit measure names to that specific one.</param>
/// <returns>Returns list of measure names specific to a table or all of them if tableName is empty.</returns>
/// <exception cref="System.InvalidOperationException">Thrown when database object is null.</exception>
public IEnumerable <string> GetMeasureNames(string tableName)
{
if (null == this._database)
{
throw new InvalidOperationException("Current database is NULL. GetMeasureNames function cannot be called when database object is NULL");
}
var measureNames = new List <string>();
if (this._database.Cubes.Count > 0)
{
var cube = this._database.Cubes[0];
if (cube.MdxScripts.Count > 0)
{
var mdxScrit = cube.MdxScripts[0];
foreach (Command mdxCommand in mdxScrit.Commands)
{
if (!string.IsNullOrEmpty(mdxCommand.Text))
{
var measures = MeasuresContainer.ParseDaxScript(mdxCommand.Text).Measures;
if (string.IsNullOrEmpty(tableName))
{
measureNames.AddRange(measures.Select(i => i.TableName + i.Name));
}
else
{
measureNames.AddRange(measures.Where(i => string.Equals(i.TableName, tableName, StringComparison.CurrentCultureIgnoreCase)).Select(i => i.TableName + i.Name));
}
}
}
}
}
return(measureNames);
}
internal string GetMeasuresText()
{
if (this._database == null)
{
if (_isConnecting)
{
return("-- Reading metadata from the database. Please retry operation later.");
}
return("-- Not connected to the database.");
}
var sb = new StringBuilder();
var restrictions = new AdomdRestrictionCollection();
restrictions.Add("DatabaseID", _database.ID);
var dataSet = _adomdConn.GetSchemaDataSet("DISCOVER_XML_METADATA", restrictions);
Debug.Assert(dataSet.Tables.Count == 1);
var table = dataSet.Tables[0];
Debug.Assert(table.Columns.Count == 1);
Debug.Assert(table.Rows.Count == 1);
var script = table.Rows[0][0] as string;
Debug.Assert(!string.IsNullOrEmpty(script));
var mc = MeasuresContainer.ParseText(script);
sb.Append(mc.GetDaxText());
return(sb.ToString());
}
void BackgroundWorker_SaveMeasuresAndCalcColumns(object sender, DoWorkEventArgs e)
{
var cmdProducer = new ServerCommandProducer(_database.Name, _database.CompatibilityLevel, _database.Cubes[0].Name);
try
{
var bw = sender as BackgroundWorker;
bw.DoWork -= new DoWorkEventHandler(BackgroundWorker_SaveMeasuresAndCalcColumns);
LogLine("Begin saving measures.");
string viewText = e.Argument as string;
var mc = MeasuresContainer.ParseDaxScript(viewText);
LogLine("Begin transaction.");
using (var cmd = new AdomdCommand("@CommandText", _adomdConn))
{
cmd.Parameters.Add(new AdomdParameter("CommandText", cmdProducer.ProduceBeginTransaction()));
cmd.ExecuteNonQuery();
}
LogLine("Alter MDX script.");
using (var cmd = new AdomdCommand("@CommandText", _adomdConn))
{
cmd.Parameters.Add(new AdomdParameter("CommandText", cmdProducer.ProduceAlterMdxScript(mc.Measures)));
cmd.ExecuteNonQuery();
}
LogLine("Run ProcessRecalc.");
using (var cmd = new AdomdCommand("@CommandText", _adomdConn))
{
cmd.Parameters.Add(new AdomdParameter("CommandText", cmdProducer.ProduceProcessRecalc()));
cmd.ExecuteNonQuery();
}
LogLine("Commit transaction.");
using (var cmd = new AdomdCommand("@CommandText", _adomdConn))
{
cmd.Parameters.Add(new AdomdParameter("CommandText", cmdProducer.ProduceCommitTransaction()));
cmd.ExecuteNonQuery();
}
LogLine("End saving measures.");
}
catch (Exception ex)
{
using (var cmd = new AdomdCommand("@CommandText", _adomdConn))
{
cmd.Parameters.Add(new AdomdParameter("CommandText", cmdProducer.ProduceRollbackTransaction()));
cmd.ExecuteNonQuery();
}
LogError("Error while saving measures. " + ex.ToString());
}
}
/// <summary>
/// Gets Measures section of BIM file
/// </summary>
internal static string GetMeasuresFromBimFile(string bimFilePath)
{
try
{
if (!File.Exists(bimFilePath))
{
throw new FileNotFoundException(string.Format("Model file {0} doesn't exist.", bimFilePath));
}
string bimScript = File.ReadAllText(bimFilePath);
var mc = MeasuresContainer.ParseText(bimScript);
return(mc.GetDaxText());
}
catch (Exception e)
{
throw new DaxException(string.Format("Error while reading measures from file '{0}'", bimFilePath), e);
}
}
/// <summary>
/// Saves DAX file to Measures section of BIM file
/// </summary>
internal static void SaveMeasuresToBimFile(string daxFilePath)
{
string daxFileContent = File.ReadAllText(daxFilePath);
string customScript = null;
//TL: If DAX file includes custom MDX script, remove it to avoid interference with parser
if (daxFileContent.Contains(BeginCustomScript))
{
// read custom script
customScript = daxFileContent.Substring(daxFileContent.IndexOf(BeginCustomScript, StringComparison.InvariantCultureIgnoreCase), daxFileContent.IndexOf(EndCustomScript, EndCustomScript.Length, StringComparison.InvariantCultureIgnoreCase) + EndCustomScript.Length);
// remove custom script
daxFileContent = daxFileContent.Replace(customScript, String.Empty);
}
var mc = MeasuresContainer.ParseDaxScript(daxFileContent);
string bimFilePath = ConvertDaxPathToBimPath(daxFilePath);
if (!File.Exists(bimFilePath))
{
throw new FileNotFoundException(string.Format("Model file {0} doesn't exist", bimFilePath));
}
if (new FileInfo(bimFilePath).IsReadOnly)
{
throw new InvalidOperationException(string.Format("Model file {0} is read only", bimFilePath));
}
// TL -- injecting custom MDX script verbatum to the bim file
if (!string.IsNullOrEmpty(customScript))
{
// insert customScript as first measure so it gets serialized first
DaxMeasure m = new DaxMeasure();
m.Name = "CustomMDXScript";
m.FullText = customScript;
mc.Measures.Insert(0, m);
}
string bimScript = System.IO.File.ReadAllText(bimFilePath);
var updatedScript = mc.UpdateMeasures(bimScript);
File.WriteAllText(bimFilePath, updatedScript);
}
public string ProduceAlterScriptElement(MeasuresContainer container)
{
var stream = new MemoryStream();
var writer = new XmlTextWriter(stream, Encoding.UTF8);
var obj = container.ToMdxScript(_dbCompatibilityLevel);
Utils.Serialize(writer, obj, true);
stream.Position = 0;
var text = new StreamReader(stream).ReadToEnd();
//Delete default nodes
var document = XDocument.Parse(text);
document.Descendants(MeasuresContainer.NS + "CreatedTimestamp").Remove();
document.Descendants(MeasuresContainer.NS + "LastSchemaUpdate").Remove();
document.Descendants(MeasuresContainer.NS + "Value").Where(i => i.IsEmpty).Remove();
document.Element(MeasuresContainer.NS + "MdxScript").RemoveAttributes();
return(document.ToString(SaveOptions.OmitDuplicateNamespaces));
}
/// <summary>
/// Constructs declarations cache based on database object
/// </summary>
private void ConstructSchemaBasedDeclarations()
{
LogLine("Begin constructing schema based declarations.");
List <Declaration> tableDeclarations = new List <Declaration>();
List <Declaration> measureDeclarations = new List <Declaration>();
Dictionary <string, List <Declaration> > tableMembersDeclarations = new Dictionary <string, List <Declaration> >();
List <string> tableList = new List <string>();
List <string> columnList = new List <string>();
List <string> measureList = new List <string>();
if (null == this._database)
{
ClearDeclarationsCache();
LogLine("ERROR: Database is not defined.");
return;
}
foreach (Microsoft.AnalysisServices.Dimension dim in _database.Dimensions)
{
// Set table declarations
tableDeclarations.Add(new Babel.Declaration(dim.Description, dim.Name, Babel.LanguageService.TABLE_GLYPH_INDEX, dim.Name));
tableList.AddRange(GenerateValidTableNames(dim.Name));
// Obtain column declarations for current table
List <Declaration> columnDeclarationsCurrentTable = new List <Declaration>();
foreach (DimensionAttribute dimAttr in dim.Attributes)
{
// Skip RowNumber columns
if (_rowNumberColumnNames.Any(i => { return(string.Equals(i, dimAttr.Name, StringComparison.CurrentCultureIgnoreCase)); }))
{
continue;
}
var columnShortName = "[" + dimAttr.Name + "]";
if (dimAttr.Source is ExpressionBinding)
{
// use calc column glyph
columnDeclarationsCurrentTable.Add(new Babel.Declaration(dimAttr.Description, dimAttr.Name, Babel.LanguageService.CALC_COLUMN_GLYPH_INDEX, columnShortName));
}
else
{
// use base column glyph
columnDeclarationsCurrentTable.Add(new Babel.Declaration(dimAttr.Description, dimAttr.Name, Babel.LanguageService.BASE_COLUMN_GLYPH_INDEX, columnShortName));
}
GenerateValidTableNames(dim.Name).ForEach(i => columnList.Add(string.Format("{0}{1}", i, columnShortName)));
}
tableMembersDeclarations.Add(dim.Name, columnDeclarationsCurrentTable);
}
// Obtain measure declarations and distribute them in table member declarations
if (this._database.Cubes.Count > 0)
{
var cube = this._database.Cubes[0];
if (cube.MdxScripts.Count > 0)
{
var mdxScript = cube.MdxScripts[0];
foreach (Command mdxCommand in mdxScript.Commands)
{
if (!string.IsNullOrEmpty(mdxCommand.Text))
{
var measures = MeasuresContainer.ParseDaxScript(mdxCommand.Text).Measures;
foreach (var measure in measures)
{
// Add measure declaration to the global collection
var measureShortName = "[" + measure.Name + "]";
measureDeclarations.Add(new Babel.Declaration(measure.Expression, measure.Name, Babel.LanguageService.MEASURE_GLYPH_INDEX, measureShortName));
GenerateValidTableNames(measure.TableName).ForEach(i => measureList.Add(string.Format("{0}{1}", i, measureShortName)));
// Add the measure declaration to the table member declaration list
if (tableMembersDeclarations.ContainsKey(measure.TableName))
{
tableMembersDeclarations[measure.TableName].Add(new Babel.Declaration(measure.Expression, measure.Name, Babel.LanguageService.MEASURE_GLYPH_INDEX, measureShortName));
}
}
}
}
}
}
// Create HTML table
string htmlSchemaTemplate;
using (var textStreamReader = new StreamReader(System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("DaxEditor.Resources.ScemaTemplate.htm")))
{
htmlSchemaTemplate = textStreamReader.ReadToEnd();
}
var htmlSchemaBuilder = new StringBuilder();
foreach (var td in tableMembersDeclarations)
{
htmlSchemaBuilder.AppendFormat(BeginTableTemplate, HtmlEncode(td.Key));
foreach (var decl in td.Value)
{
if (_rowNumberColumnNames.Any(i => { return(string.Equals(i, decl.Name, StringComparison.CurrentCultureIgnoreCase)); }))
{
continue;
}
switch (decl.Glyph)
{
case Babel.LanguageService.BASE_COLUMN_GLYPH_INDEX:
htmlSchemaBuilder.AppendFormat(RowTemplate, "column", HtmlEncode(decl.Name));
break;
case Babel.LanguageService.CALC_COLUMN_GLYPH_INDEX:
htmlSchemaBuilder.AppendFormat(RowTemplate, "calcolumn", HtmlEncode(decl.Name));
break;
case Babel.LanguageService.MEASURE_GLYPH_INDEX:
htmlSchemaBuilder.AppendFormat(RowTemplate, "measure", HtmlEncode(decl.Name));
break;
}
}
htmlSchemaBuilder.Append(EndTableTemplate);
}
htmlSchemaTemplate = htmlSchemaTemplate.Replace(TablesPlaceholder, htmlSchemaBuilder.ToString());
// Commit the newly created declarations into the cache
lock (this)
{
this._tableDeclarations = tableDeclarations;
this._measureDeclarations = measureDeclarations;
this._tableMembersDeclarations = tableMembersDeclarations;
this._htmlSchema = htmlSchemaTemplate;
_completionDataSnapshot = new CompletionDataSnapshot(_completionDataSnapshot, tableList, columnList, measureList);
}
LogLine("End constructing schema based declarations.");
}
