private string GenerateFilter(FdoFeature feat)
{
FdoFeatureTable table = feat.Table;
if (table.PrimaryKey.Length > 0)
{
List <string> filters = new List <string>();
foreach (DataColumn col in table.PrimaryKey)
{
DataType dt = ExpressUtility.GetFdoDataTypeFromClrType(col.DataType);
string f = string.Empty;
if (dt == DataType.DataType_DateTime || dt == DataType.DataType_String)
{
f = col.ColumnName + " = '" + feat[col] + "'";
}
else
{
f = col.ColumnName + " = " + feat[col];
}
filters.Add(f);
}
return("(" + string.Join(" AND ", filters.ToArray()) + ")");
}
return(null);
}
private static void SaveQueryResult(FdoFeatureTable table, string file)
{
if (!string.IsNullOrEmpty(file))
{
//Ask for class name
if (string.IsNullOrEmpty(table.TableName))
{
string name = MessageService.ShowInputBox(ResourceService.GetString("TITLE_SAVE_QUERY_AS"), ResourceService.GetString("MSG_SAVE_QUERY_AS"), "QueryResult");
while (name != null && name.Trim() == string.Empty)
{
name = MessageService.ShowInputBox(ResourceService.GetString("TITLE_SAVE_QUERY_AS"), ResourceService.GetString("MSG_SAVE_QUERY_AS"), "QueryResult");
}
if (name == null)
{
return;
}
table.TableName = name;
}
using (TableToFlatFile proc = new TableToFlatFile(table, file))
{
EtlProcessCtl ctl = new EtlProcessCtl(proc);
Workbench.Instance.ShowContent(ctl, ViewRegion.Dialog);
}
}
}
internal string GenerateFilter(FdoFeature[] features)
{
if (features == null || features.Length == 0)
{
return(null);
}
FdoFeatureTable table = features[0].Table;
//All features in array must originate from the same table
for (int i = 1; i < features.Length; i++)
{
if (features[i].Table != table)
{
return(null);
}
}
List <string> filter = new List <string>();
foreach (FdoFeature feat in features)
{
filter.Add(GenerateFilter(feat));
}
return(string.Join(" OR ", filter.ToArray()));
}
private void saveSQLite_Click(object sender, EventArgs e)
{
FdoFeatureTable table = this.ResultTable;
if (table == null || table.Rows.Count == 0)
{
this.ShowError(ResourceService.GetString("ERR_NO_RESULT_TABLE_TO_SAVE"));
return;
}
string file = FileService.SaveFile(ResourceService.GetString("TITLE_SAVE_QUERY_RESULT"), ResourceService.GetString("FILTER_SQLITE"));
SaveQueryResult(table, file);
}
void RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
_view.SetBusyCursor(false);
_timer.Stop();
_view.CancelEnabled = false;
_view.ClearEnabled = true;
_view.ExecuteEnabled = true;
if (e.Error != null)
{
_view.DisplayError(e.Error);
}
else
{
FdoFeatureTable result = null;
if (e.Cancelled)
{
result = _cancelResult;
}
else
{
result = e.Result as FdoFeatureTable;
}
if (result != null)
{
_view.ResultTable = result;
if (e.Cancelled)
{
_view.StatusMessage = string.Format("Query cancelled. Returned {0} results", result.Rows.Count);
}
else
{
_view.StatusMessage = string.Format("Returned {0} results", result.Rows.Count);
}
}
else //No result table
{
if (e.Cancelled)
{
_view.StatusMessage = "Query cancelled";
}
else
{
_view.StatusMessage = string.Format("0 results");
}
}
}
}
private void DeleteFeatures(FdoFeatureTable table, FdoFeature[] features)
{
string filter = GenerateFilter(features);
if (string.IsNullOrEmpty(filter))
{
_view.ShowError("Unable to generate a delete filter. Possibly this result set has no unique identifiers or this result set was produced from a SQL query. If this result set is produced from a standard query, make sure that *ALL* identity properties are selected");
return;
}
int expectedCount = features.Length;
using (FdoFeatureService service = _connection.CreateFeatureService())
{
//Deleting is based on a very simple premise, the filter should produce the
//same number of affected results when selecting and deleting.
//
//In our case, the filter should affect exactly the expected number of results when selecting and deleting.
long count = service.GetFeatureCount(table.TableName, filter, true);
if (expectedCount == count)
{
int deleted = service.DeleteFeatures(table.TableName, filter, true);
if (expectedCount == deleted)
{
foreach (FdoFeature feat in features)
{
table.Rows.Remove(feat);
}
_view.ShowMessage("Delete Feature", "Feature Deleted");
}
}
else if (count > expectedCount)
{
_view.ShowError("Delete operation would delete more than the expected number of features (" + expectedCount + ")");
}
else if (count == 0)
{
_view.ShowError("Delete operation would not delete any features");
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="TableToFlatFile"/> class.
/// </summary>
/// <param name="table">The table.</param>
/// <param name="file">The file.</param>
/// <param name="reportFrequency">The report frequency.</param>
public TableToFlatFile(FdoFeatureTable table, string file, int reportFrequency)
: this(table, file)
{
_ReportFrequency = reportFrequency;
}
/// <summary>
/// Initializes a new instance of the <see cref="TableToFlatFile"/> class.
/// </summary>
/// <param name="table">The table.</param>
/// <param name="file">The file.</param>
public TableToFlatFile(FdoFeatureTable table, string file)
{
_table = table;
_outputFile = file;
}
void DoWork(object sender, DoWorkEventArgs e)
{
IFdoReader reader = null;
using (FdoFeatureService service = _connection.CreateFeatureService())
{
try
{
if (e.Argument is FeatureAggregateOptions)
{
reader = service.SelectAggregates((FeatureAggregateOptions)e.Argument);
}
else if (e.Argument is StandardQuery)
{
var stdArg = (e.Argument as StandardQuery);
reader = service.SelectFeatures(stdArg.query, stdArg.Limit, stdArg.UseExtendedSelect);
}
else if (e.Argument is string)
{
reader = service.ExecuteSQLQuery(e.Argument.ToString());
}
//Init the data grid view
FdoFeatureTable table = new FdoFeatureTable();
table.RequestSpatialContext += delegate(object o, string name)
{
SpatialContextInfo c = service.GetSpatialContext(name);
if (c != null)
{
table.AddSpatialContext(c);
}
};
ClassDefinition clsDef = null;
bool hasJoins = false;
if (e.Argument is StandardQuery)
{
var qry = ((StandardQuery)e.Argument).query;
clsDef = service.GetClassByName(qry.ClassName); //TODO: Should really qualify this, but our input parameters do not specify a schema
hasJoins = qry.JoinCriteria.Count > 0;
}
table.InitTable(reader, clsDef, hasJoins);
// need to store object class defn outside loop
ClassDefinition classDefObject = null;
ClassDefinition classDefAssoc = null;
while (reader.ReadNext() && !_queryWorker.CancellationPending)
{
//Pass processed feature to data grid view
FdoFeature feat = table.NewRow();
for (int i = 0; i < reader.FieldCount; i++)
{
string name = reader.GetName(i);
if (!reader.IsNull(name))
{
FdoPropertyType pt = reader.GetFdoPropertyType(name);
switch (pt)
{
case FdoPropertyType.Association:
// TODO: how to handle for non-StandardQuery
if (e.Argument is StandardQuery)
{
// because the original code used an iterator over the reader.FieldCount
// it is a bit of a hack to get another definition of the class and check
// we are at the right property with a name comparison
// TODO: code review to see if this can be implemented better
FdoFeatureReader readerFeature = (FdoFeatureReader)reader;
ClassDefinition classDef = readerFeature.GetClassDefinition();
foreach (PropertyDefinition propertyDef in classDef.Properties)
{
// only looking for the right association
if ((PropertyType.PropertyType_AssociationProperty == propertyDef.PropertyType) &&
(propertyDef.Name.Equals(name)))
{
AssociationPropertyDefinition assocProp = (AssociationPropertyDefinition)propertyDef;
ClassDefinition classAssoc = assocProp.AssociatedClass;
// get a reader from the association - nice!
IFeatureReader readerAssoc = readerFeature.GetFeatureObject(name);
if ((null != readerAssoc) && (readerAssoc.ReadNext()))
{
// TODO: this should be an iterative function
// the simple reassignment on each instance fails
// (classDefObject.Properties is always zero after first record)
// so have set classDefObject higher-up and re-use/
// - problem will occur if more than one association
// ClassDefinition classDefObject = readerObject.GetClassDefinition();
if (null == classDefAssoc)
{
classDefAssoc = readerAssoc.GetClassDefinition();
}
foreach (PropertyDefinition propertyDefAssoc in classDefAssoc.Properties)
{
String nameAssoc = propertyDefAssoc.Name;
// TODO: only "data" type handled at present
if (PropertyType.PropertyType_DataProperty == propertyDefAssoc.PropertyType)
{
DataPropertyDefinition datapropertyDefAssoc = (DataPropertyDefinition)propertyDefAssoc;
String szFullName = name + "." + nameAssoc;
DataType ptAssoc = datapropertyDefAssoc.DataType;
// TODO: handle all types
switch (ptAssoc)
{
case DataType.DataType_String:
feat[szFullName] = readerAssoc.GetString(nameAssoc);
break;
case DataType.DataType_Int16:
feat[szFullName] = readerAssoc.GetInt16(nameAssoc);
break;
case DataType.DataType_Int32:
feat[szFullName] = readerAssoc.GetInt32(nameAssoc);
break;
case DataType.DataType_Int64:
feat[szFullName] = readerAssoc.GetInt64(nameAssoc);
break;
}
}
}
readerAssoc.Close();
}
}
}
}
break;
case FdoPropertyType.BLOB:
feat[name] = reader.GetLOB(name).Data;
break;
case FdoPropertyType.Boolean:
feat[name] = reader.GetBoolean(name);
break;
case FdoPropertyType.Byte:
feat[name] = reader.GetByte(name);
break;
case FdoPropertyType.CLOB:
feat[name] = reader.GetLOB(name).Data;
break;
case FdoPropertyType.DateTime:
{
try
{
feat[name] = reader.GetDateTime(name);
}
catch //Unrepresentable dates
{
feat[name] = DBNull.Value;
}
}
break;
case FdoPropertyType.Decimal: //We should probably remove this as FDO coerces decimals to doubles (otherwise why is there not a GetDecimal() method in FdoIReader?)
{
double val = reader.GetDouble(name);
if (Double.IsNaN(val))
{
feat[name] = DBNull.Value;
}
else
{
feat[name] = Convert.ToDecimal(val);
}
}
break;
case FdoPropertyType.Double:
feat[name] = reader.GetDouble(name);
break;
case FdoPropertyType.Geometry:
{
try
{
byte[] fgf = reader.GetGeometry(name);
OSGeo.FDO.Geometry.IGeometry geom = service.GeometryFactory.CreateGeometryFromFgf(fgf);
var fg = new FdoGeometry(geom);
//OGR geometry trap
using (var env = fg.Envelope) { }
feat[name] = fg;
}
catch
{
feat[name] = DBNull.Value;
}
}
break;
case FdoPropertyType.Int16:
feat[name] = reader.GetInt16(name);
break;
case FdoPropertyType.Int32:
feat[name] = reader.GetInt32(name);
break;
case FdoPropertyType.Int64:
feat[name] = reader.GetInt64(name);
break;
case FdoPropertyType.Object:
// TODO: how to handle for non-StandardQuery
if (e.Argument is StandardQuery)
{
// because the original code used an iterator over the reader.FieldCount
// it is a bit of a hack to get another definition of the class and check
// we are at the right property with a name comparison
// TODO: code review to see if this can be implemented better
FdoFeatureReader readerFeature = (FdoFeatureReader)reader;
ClassDefinition classDef = readerFeature.GetClassDefinition();
foreach (PropertyDefinition propertyDef in classDef.Properties)
{
// only looking for the right object
if ((PropertyType.PropertyType_ObjectProperty == propertyDef.PropertyType) &&
(propertyDef.Name.Equals(name)))
{
ObjectPropertyDefinition assocProp = (ObjectPropertyDefinition)propertyDef;
ClassDefinition classAssoc = assocProp.Class;
// get a reader from the object - nice!
IFeatureReader readerObject = readerFeature.GetFeatureObject(name);
if ((null != readerObject) && (readerObject.ReadNext()))
{
// TODO: this should be an iterative function
// the simple reassignment on each instance fails
// (classDefObject.Properties is always zero after first record)
// so have set classDefObject higher-up and re-use/
// - problem will occur if more than one association
// ClassDefinition classDefObject = readerObject.GetClassDefinition();
if (null == classDefObject)
{
classDefObject = readerObject.GetClassDefinition();
}
foreach (PropertyDefinition propertyDefObject in classDefObject.Properties)
{
String nameObject = propertyDefObject.Name;
// TODO: only "data" type handled at present
if (PropertyType.PropertyType_DataProperty == propertyDefObject.PropertyType)
{
DataPropertyDefinition datapropertyDefObject = (DataPropertyDefinition)propertyDefObject;
String szFullName = name + "." + nameObject;
DataType ptAssoc = datapropertyDefObject.DataType;
// TODO: handle all types
switch (ptAssoc)
{
case DataType.DataType_String:
feat[szFullName] = readerObject.GetString(nameObject);
break;
case DataType.DataType_Int16:
feat[szFullName] = readerObject.GetInt16(nameObject);
break;
case DataType.DataType_Int32:
feat[szFullName] = readerObject.GetInt32(nameObject);
break;
case DataType.DataType_Int64:
feat[szFullName] = readerObject.GetInt64(nameObject);
break;
}
}
}
readerObject.Close();
readerObject = null;
}
}
}
}
break;
//case FdoPropertyType.Raster:
case FdoPropertyType.Single:
feat[name] = reader.GetSingle(name);
break;
case FdoPropertyType.String:
feat[name] = reader.GetString(name);
break;
}
}
else
{
feat[name] = DBNull.Value;
}
}
table.AddRow(feat);
if (table.Rows.Count % 50 == 0)
{
System.Threading.Thread.Sleep(50);
}
}
if (_queryWorker.CancellationPending)
{
e.Cancel = true;
_cancelResult = table;
}
else
{
e.Result = table;
}
}
finally
{
if (reader != null)
{
reader.Close();
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="FdoFeatureTableInputOperation"/> class.
/// </summary>
/// <param name="table">The table.</param>
public FdoFeatureTableInputOperation(FdoFeatureTable table)
{
_table = table;
}
