public bool IsFeatureClassLockable(IFeatureClass checkFeatureClass)
{
IObjectClass objectClass = checkFeatureClass as IObjectClass;
if (objectClass == null)
{
return(false);
}
ISchemaLock schemaLock = (ISchemaLock)objectClass;
if (schemaLock == null)
{
return(false);
}
// Get an enumerator over the current schema locks.
IEnumSchemaLockInfo enumSchemaLockInfo = null;
schemaLock.GetCurrentSchemaLocks(out enumSchemaLockInfo);
// Iterate through the locks.
ISchemaLockInfo schemaLockInfo = null;
int lockCount = 0;
while ((schemaLockInfo = enumSchemaLockInfo.Next()) != null)
{
lockCount++;
Trace.WriteLine(string.Format("{0} : {1} : {2}", schemaLockInfo.TableName,
schemaLockInfo.UserName, schemaLockInfo.SchemaLockType));
}
// Note: 1 sharedLock for this process is normal, so we test for > 1 lock
return(lockCount < 2);
}
private void TopologyGeneralPropertyPage_Load(object sender, EventArgs e)
{
ISchemaLock @lock = this.itopology_0 as ISchemaLock;
IEnumSchemaLockInfo schemaLockInfo = null;
@lock.GetCurrentSchemaLocks(out schemaLockInfo);
schemaLockInfo.Reset();
if (schemaLockInfo.Next() == null)
{
this.txtName.Properties.ReadOnly = true;
this.txtClusterTolerance.Properties.ReadOnly = true;
}
this.txtName.Text = (this.itopology_0 as IDataset).Name;
this.txtClusterTolerance.Text = this.itopology_0.ClusterTolerance.ToString();
this.bool_0 = true;
switch (this.itopology_0.State)
{
case esriTopologyState.esriTSUnanalyzed:
this.lblTopoError1.Text = "没有校验";
this.lblTopoError2.Text = "在拓扑中存在一个或多个脏区。脏区是指被编辑过的区域";
break;
case esriTopologyState.esriTSAnalyzedWithErrors:
this.lblTopoError1.Text = "已经校验 - 存在错误";
this.lblTopoError2.Text = "所有编辑过的拓扑已经被校验过。有一个或多个拓扑错误存在";
break;
case esriTopologyState.esriTSAnalyzedWithoutErrors:
this.lblTopoError1.Text = "已经校验 - 没有错误误";
this.lblTopoError2.Text = "所有编辑过的拓扑已经被校验过。没有拓扑错误存在";
break;
}
}
/// <summary>Method to perform the actual schema lock</summary>
/// <remarks>
/// - If the schema is already locked by a different user, an exception is thrown with lock info (name / table)
/// - If the schema is already locked by the current user, no lock is performed
/// - When an exclusive lock is successfully established, the lock is added to the list of managed locks
/// for demotion at disposal
/// </remarks>
public void LockDatasetSchema(ITable fc)
{
ResourceManager resourceManager = new ResourceManager(
"ESRI.ArcGIS.OSM.OSMClassExtension.OSMClassExtensionStrings", this.GetType().Assembly);
ISchemaLock schemaLock = fc as ISchemaLock;
if (schemaLock == null)
{
throw new ArgumentNullException("schemaLock");
}
// make sure that are not any existing exclusive locks
IEnumSchemaLockInfo currentlyExistingLocks;
try
{
schemaLock.GetCurrentSchemaLocks(out currentlyExistingLocks);
}
catch (Exception ex)
{
throw new ApplicationException(resourceManager.GetString("OSMClassExtensionManager_Reading_Lock_Exception"));
}
bool gdbAlreadyLockedbyUser = false;
ISchemaLockInfo schemaLockInfo = null;
while ((schemaLockInfo = currentlyExistingLocks.Next()) != null)
{
if (schemaLockInfo.SchemaLockType == esriSchemaLock.esriExclusiveSchemaLock &&
!String.IsNullOrEmpty(schemaLockInfo.UserName))
{
throw new ApplicationException(string.Format(
resourceManager.GetString("OSMClassExtensionManager_Exclusive_Lock_Exception"),
schemaLockInfo.TableName, schemaLockInfo.UserName));
}
else if (schemaLockInfo.SchemaLockType == esriSchemaLock.esriExclusiveSchemaLock)
{
gdbAlreadyLockedbyUser = true;
break;
}
}
if (!gdbAlreadyLockedbyUser)
{
schemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);
}
_managedLocks.Add(schemaLock);
}