public AdvancedFilter(string filePath, string tablename, string uniqueColumnName, IEnumerable <long> uniqueRowIDs = null)
{
InitializeComponent();
_filePath = filePath;
TableName = tablename;
SelectedKeys = uniqueRowIDs;
_selectionColumnName = uniqueColumnName;
//handle events from the various specialized components
TestWindow.ErrorsFound += ErrorsFound;
TestWindow.ParseSuccess += DisplayResult;
AvailableFunctions.TextToAdd += TextToInsert;
//assign the proper grid alignment to the textblock that is behaving like a tooltip.
Grid.SetRow(TestWindow.TextBlock, 3);
MainGrid.Children.Add(TestWindow.TextBlock);
//Add the names of the columns to populate the available columns array. (this is currently handled
Database.Reader.SqLiteReader reader = new Database.Reader.SqLiteReader(filePath, tablename);
_headers = reader.ColumnNames().ToList();
TestWindow.SetHeaders = _headers;
//Add the types of the columns to enforce type strictness.
List <Type> headertypes = reader.ColumnTypes().ToList();
TestWindow.SetHeaderTypes = headertypes;
//Add the first row of data to the database as an object array so that the result will show the result for the first row.
reader.Open();
_FirstRow = reader.Row(0);
if (_selectedKeys != null)
{
if (_selectedKeys.Count() > 0)
{
AllowSelectionOption = true;
object[] tmp = reader.Column(_selectionColumnName);
_FirstSelectedRow = reader.Row(Array.IndexOf(tmp, _selectedKeys.First()));
}
}
_totalRows = reader.RowCount();
NotifyPropertyChanged(nameof(SelectedCount));
reader.Close();
TestWindow.SetDataForFirstRow = _FirstRow;
//To create a selection, set the output type to boolean...
TestWindow.SetOutputType = FieldCalculationParser.TypeEnum.Bool;
ColumnType = "True or False";
//Add the headers to the avaialblefields treeview. (i am adding type as a tooltip for reference)
for (int i = 0; i < _headers.Count(); i++)
{
System.Windows.Controls.TreeViewItem tvi = new TreeViewItem();
tvi.Header = _headers[i];
System.Windows.Controls.ToolTip t = new System.Windows.Controls.ToolTip();
t.Content = headertypes[i].Name;
tvi.ToolTip = t;
AvailableFields.Items.Add(tvi);
}
}
private List <PreviewRowItem> getPreviewRowItems()
{
List <PreviewRowItem> previewRowItems = new List <PreviewRowItem>();
//this is where you would get the parse tree from the expressionwindow, and then execute the tree for each row.
FieldCalculationParser.ParseTreeNode tree = TestWindow.GetTree;
FieldCalculationParser.ParseTreeNode.Initialize();//clear all errors.
if (tree != null)
{
Database.Reader.SqLiteReader reader = new Database.Reader.SqLiteReader(_filePath, _tableName);
object[] row;
List <string> usedheaders = tree.GetHeaderNames();
string[] uniqueheaders = getUniqueHeaders(usedheaders);
tree.SetColNums(uniqueheaders.ToList());
Int64 count = reader.RowCount();
List <int> selectedRows = null;
List <object> output = new List <object>();
reader.Open();
object[] original = reader.Column(_columnName);
object[] primaryKeys = reader.Column(_selectionColumnName);
//needs to operate on selected rows or not.
//ifselected rows, update the entire column, but put the original value in for non selected rows.
if (UseSelection)
{
selectedRows = new List <int>();
object[] tmp = reader.Column(_selectionColumnName);
foreach (long uid in _selectedKeys)
{
selectedRows.Add(Array.IndexOf(tmp, uid));
}
}
for (int i = 0; i < count; i++)
{
if (!UseSelection || selectedRows.Contains(i))
{
FieldCalculationParser.ParseTreeNode.RowOrCellNum = (int)i;//whatever.
if (uniqueheaders.Count() > 0)
{
row = reader.Row((int)i, uniqueheaders);
tree.Update(ref row);
}
output.Add(tree.Evaluate().GetResult);
}
else
{
output.Add(original[i]);
}
previewRowItems.Add(new PreviewRowItem(primaryKeys[i], original[i], output[i]));
}
reader.Close();
}
if (tree.GetComputeErrors.Count > 1)
{
//do not write to file.
StringBuilder s = new StringBuilder();
foreach (string o in tree.GetComputeErrors)
{
s.AppendLine(o);
}
ErrorWindow err = new ErrorWindow(s.ToString());
err.Title = "Output";
err.ShowDialog();
}
return(previewRowItems);
}
private void CmdExecute_Click(object sender, RoutedEventArgs e)
{
//this is where you would get the parse tree from the expressionwindow, and then execute the tree for each row.
FieldCalculationParser.ParseTreeNode tree = TestWindow.GetTree;
FieldCalculationParser.ParseTreeNode.Initialize();//clear all errors.
if (tree != null)
{
Database.Reader.SqLiteReader reader = new Database.Reader.SqLiteReader(_filePath, _tableName);
object[] row;
List <string> usedheaders = tree.GetHeaderNames(); //will include duplicates
string[] uniqueheaders = getUniqueHeaders(usedheaders); //removes duplicates
tree.SetColNums(uniqueheaders.ToList()); //lets the tree know what index in the array of object to look for for each header.
Int64 count = reader.RowCount();
List <long> output = new List <long>();
reader.Open();
//needs to operate on selected rows or not.
//ifselected rows, only iterate on the current selection.
if (UseSelection)
{
object[] tmp = reader.Column(_selectionColumnName);
List <int> items = new List <int>();
int idx = 0;
foreach (long uid in _selectedKeys)
{
idx = Array.IndexOf(tmp, uid);
FieldCalculationParser.ParseTreeNode.RowOrCellNum = idx;
if (uniqueheaders.Count() > 0)
{
row = reader.Row(idx, uniqueheaders);
tree.Update(ref row);
}
if ((bool)tree.Evaluate().GetResult)
{
//select it!
output.Add(uid);
}
}
}
else
{
object[] uniqueIDS = reader.Column(_selectionColumnName);
for (Int64 i = 0; i < count; i++)
{
FieldCalculationParser.ParseTreeNode.RowOrCellNum = (int)i;//whatever.
if (uniqueheaders.Count() > 0)
{
row = reader.Row((int)i, uniqueheaders);
tree.Update(ref row);
}
if ((bool)tree.Evaluate().GetResult)
{
//select it!
output.Add((long)uniqueIDS[i]);
}
}
}
reader.Close();
if (tree.GetComputeErrors.Count > 1)
{
//do not update selection
StringBuilder s = new StringBuilder();
foreach (string o in tree.GetComputeErrors)
{
s.AppendLine(o);
}
ErrorWindow err = new ErrorWindow(s.ToString());
err.Title = "Output";
err.ShowDialog();
}
else
{
//update _selectedKeys;
SelectedKeys = output;
//raise event?
FilterWasSuccessful = true;
Close();
}
}
}