|
public static GetRelations ( |
||
| primaryType | ||
| Результат | ReadOnlyCollection |
|
/// <summary>
/// Inserts into the database all relation information. Dependent objects will be commited.
/// </summary>
/// <param name="dbObject">The primary object owning the RelationList to be populated.</param>
/// <param name="forceRetrieval">Determines if ALL relations will be retrieved.</param>
private void updateRelationTables(DatabaseTable dbObject)
{
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
updateRelationTable(dbObject, currRelation);
}
}
private void verifyRelationTables(Type primaryType)
{
foreach (DBRelation currRelation in DBRelation.GetRelations(primaryType))
{
try {
// check if the table exists in the database, if not, create it
SQLiteResultSet resultSet = dbClient.Execute("select * from sqlite_master where type='table' and name = '" + currRelation.TableName + "'");
if (resultSet.Rows.Count == 0)
{
// create table
string createQuery =
"create table " + currRelation.TableName + " (id INTEGER primary key, " +
currRelation.PrimaryColumnName + " INTEGER, " +
currRelation.SecondaryColumnName + " INTEGER)";
resultSet = dbClient.Execute(createQuery);
// create index1
resultSet = dbClient.Execute("create index " + currRelation.TableName + "__index1 on " +
currRelation.TableName + " (" + currRelation.PrimaryColumnName + ")");
// create index2
resultSet = dbClient.Execute("create index " + currRelation.TableName + "__index2 on " +
currRelation.TableName + " (" + currRelation.SecondaryColumnName + ")");
logger.Debug("Created " + currRelation.TableName + " sub-table.");
}
}
catch (SQLiteException e) {
logger.FatalException("Error verifying " + currRelation.TableName + " subtable.", e);
}
}
}
public void CommitRelations(DatabaseTable dbObject)
{
if (dbObject == null)
{
return;
}
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
if (currRelation.AutoRetrieve)
{
foreach (DatabaseTable subObj in currRelation.GetRelationList(dbObject))
{
Commit(subObj);
}
updateRelationTable(dbObject, currRelation);
}
}
foreach (DBField currField in DBField.GetFieldList(dbObject.GetType()))
{
if (currField.DBType == DBField.DBDataType.DB_OBJECT)
{
Commit((DatabaseTable)currField.GetValue(dbObject));
}
}
}
// deletes all subtable data for the given object.
private void deleteAllRelationData(DatabaseTable dbObject)
{
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
deleteRelationData(dbObject, currRelation);
}
}
public void Revert(DatabaseTable dbObject)
{
if (dbObject == null || dbObject.RevertInProcess)
{
return;
}
dbObject.RevertInProcess = true;
// recursively revert any child objects
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
foreach (DatabaseTable subObj in currRelation.GetRelationList(dbObject))
{
Revert(subObj);
}
}
// revert any objects directly linked to
foreach (DBField currField in DBField.GetFieldList(dbObject.GetType()))
{
if (currField.DBType == DBField.DBDataType.DB_OBJECT)
{
Commit((DatabaseTable)currField.GetValue(dbObject));
}
}
// revert any modified relationships
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
if (currRelation.GetRelationList(dbObject).CommitNeeded)
{
currRelation.GetRelationList(dbObject).Populated = false;
getRelationData(dbObject, currRelation);
}
}
dbObject.RevertInProcess = false;
// if this object has never been committed or has not been changed, just quit
if (dbObject.ID == null || !dbObject.CommitNeeded)
{
return;
}
// regrab, copy values and reupdate cache
cache.Remove(dbObject);
DatabaseTable oldVersion = Get(dbObject.GetType(), (int)dbObject.ID);
dbObject.Copy(oldVersion);
cache.Replace(dbObject);
}
private void getAllRelationData(DatabaseTable dbObject)
{
if (preloading.Contains(dbObject.GetType()))
{
return;
}
foreach (DBRelation currRelation in DBRelation.GetRelations(dbObject.GetType()))
{
if (currRelation.AutoRetrieve)
{
getRelationData(dbObject, currRelation);
}
}
}
