public PersistSchemaCatalog Clone()
{
var catalog = new PersistSchemaCatalog();
lock (this)
{
foreach (var obj in Collection)
{
catalog.Collection.Add(obj.Clone());
}
}
return(catalog);
}
private void CreateSingle(UInt64 processId, string schema)
{
try
{
using (var txRef = core.Transactions.Begin(processId))
{
Guid newSchemaId = Guid.NewGuid();
var schemaMeta = VirtualPathToMeta(txRef.Transaction, schema, LockOperation.Write);
if (schemaMeta.Exists)
{
txRef.Commit();
//The namespace already exists.
return;
}
var parentSchemaMeta = GetParentMeta(txRef.Transaction, schemaMeta, LockOperation.Write);
if (parentSchemaMeta.Exists == false)
{
throw new Exception("The parent namespace does not exists. use CreateLineage() instead of CreateSingle().");
}
string parentSchemaCatalogFile = Path.Combine(parentSchemaMeta.DiskPath, Constants.SchemaCatalogFile);
PersistSchemaCatalog parentCatalog = null;
parentCatalog = core.IO.GetJson <PersistSchemaCatalog>(txRef.Transaction, parentSchemaCatalogFile, LockOperation.Write);
string filePath = string.Empty;
core.IO.CreateDirectory(txRef.Transaction, schemaMeta.DiskPath);
//Create default namespace catalog file.
filePath = Path.Combine(schemaMeta.DiskPath, Constants.SchemaCatalogFile);
if (core.IO.FileExists(txRef.Transaction, filePath, LockOperation.Write) == false)
{
core.IO.PutJson(txRef.Transaction, filePath, new PersistSchemaCatalog());
}
//Create default document catalog file.
filePath = Path.Combine(schemaMeta.DiskPath, Constants.DocumentCatalogFile);
if (core.IO.FileExists(txRef.Transaction, filePath, LockOperation.Write) == false)
{
core.IO.PutJson(txRef.Transaction, filePath, new PersistDocumentCatalog());
}
//Create default index catalog file.
filePath = Path.Combine(schemaMeta.DiskPath, Constants.IndexCatalogFile);
if (core.IO.FileExists(txRef.Transaction, filePath, LockOperation.Write) == false)
{
core.IO.PutJson(txRef.Transaction, filePath, new PersistIndexCatalog());
}
if (parentCatalog.ContainsName(schema) == false)
{
parentCatalog.Add(new PersistSchema
{
Id = newSchemaId,
Name = schemaMeta.Name
});
core.IO.PutJson(txRef.Transaction, parentSchemaCatalogFile, parentCatalog);
}
txRef.Commit();
}
}
catch (Exception ex)
{
core.Log.Write(String.Format("Failed to create single namespace for session {0}.", processId), ex);
throw;
}
}
