public List <RecordData> Join()
{
List <RecordData> listJoinInfos = new List <RecordData>();
RecordData joinInfo;
IFeature ft;
IFeature ftJoined;
List <IFeature> listSpatialJoinResults;
List <IFeature> listSpatialJoinResultsFiltered;
int count = 0;
int total = InputLayer.FeatureCount(null);
int percent = 0;
int updateInterval = 10;
int nextUpdatePercent = updateInterval;
using (ComReleaser comReleaser = new ComReleaser())
{
IFeatureCursor cursor = InputLayer.Search(null, true);
comReleaser.ManageLifetime(cursor);
bool shouldExecute = true;
while ((ft = cursor.NextFeature()) != null)
{
if (OnFilterInputFeature != null)
{
shouldExecute = OnFilterInputFeature(ft);
}
if (shouldExecute)
{
listSpatialJoinResults = SpatialJoinMethod.GetJoinFeatures(ft, JoinLayer);
// Filter SpatialJoinResult out
if (OnFilterSpatialJoinResult != null)
{
listSpatialJoinResultsFiltered = new List <IFeature>();
for (int i = 0; i < listSpatialJoinResults.Count; i++)
{
ftJoined = listSpatialJoinResults[i];
if (OnFilterSpatialJoinResult(ft, ftJoined) == true)
{
listSpatialJoinResultsFiltered.Add(ftJoined);
}
}
listSpatialJoinResults = listSpatialJoinResultsFiltered;
}
// Call back custom function after get join result.
OnResultSpatialJoinPerRecord?.Invoke(ft, listSpatialJoinResults);
if (listSpatialJoinResults.Count > 0)
{
// Compose additionFields
List <RecordData> additionFieldsRecords = OnComposeSpatialJoinRelationResultPerRecord?.Invoke(ft, listSpatialJoinResults);
if (additionFieldsRecords != null &&
additionFieldsRecords.Count > 0 &&
additionFieldsRecords.Count != listSpatialJoinResults.Count)
{
throw new Exception("Result of OnComposeSpatialJoinRelationResultPerRecord must return List<RecordData> count = param List<IFeature> count.");
}
RecordData additionFields;
// Compose spatial join result infos
for (int i = 0; i < listSpatialJoinResults.Count; i++)
{
ftJoined = listSpatialJoinResults[i];
joinInfo = NewSpatialJoinInfo();
joinInfo[FieldInput_ObjectID] = ft.OID;
joinInfo[FieldRef_DsPath] = LayerUtil.GetDataSourcePath(JoinLayer);
joinInfo[FieldRef_ObjectID] = ftJoined.OID;
#region consider use later
//// Compose additionFields
//List<RecordData> additionFieldsRecords = OnComposeSpatialJoinRelationResultPerRecord?.Invoke(ft, listSpatialJoinResults);
//if (additionFieldsRecords != null)
//{
// foreach (var additionFields in additionFieldsRecords)
// {
// string[] additionalFieldNames = additionFields.GetFieldNames();
// string additionalFieldName;
// for (int j = 0; j < additionalFieldNames.Length; j++)
// {
// additionalFieldName = additionalFieldNames[j];
// joinInfo[additionalFieldName] = additionFields[additionalFieldName];
// }
// }
//}
#endregion
// Add additionFields to joinInfo
if (additionFieldsRecords != null && additionFieldsRecords.Count > 0)
{
additionFields = additionFieldsRecords[i];
string[] additionalFieldNames = additionFields.GetFieldNames();
string additionalFieldName;
for (int j = 0; j < additionalFieldNames.Length; j++)
{
additionalFieldName = additionalFieldNames[j];
joinInfo[additionalFieldName] = additionFields[additionalFieldName];
}
}
listJoinInfos.Add(joinInfo);
}
}
}
// Progress
count++;
percent = CalPercent(count, total);
if (percent >= nextUpdatePercent)
{
OnProgressCallback?.Invoke(percent);
nextUpdatePercent += updateInterval;
}
}
}
return(listJoinInfos);
}