/// <summary>
/// Add a new entry for file. File must be saved so as to be
/// appeared under its parent directory.
/// </summary>
private SqlFile __addFile(string fileName)
{
if ((fileName = checkInvalidChars(fileName)) == null)
{
SqlFsErrCode.CurrentError = FsErr.InvalidChars;
return(null);
}
if (__isAlreadyExist(fileName))
{
SqlFsErrCode.CurrentError = FsErr.NameAlreadyExists;
return(null);
}
FsID newID = SqlFile.addFile(db, fileName, this.ID);
if (newID.compare(SqlFsConst.INVALIDID) <= 0)
{
SqlFsErrCode.CurrentError = FsErr.NoNewIDForNewFsNode;
return(null);
}
if (!updateChildList(SqlFsConst.FSOP.ADD, newID, FsID.toFsID(0)))
{
// delete entry just created
SqlFs.deleteEntryByID(db, SqlFs.DBNAMES.FsBlock.ToString(), SqlFs.FSBLOCK.fsID.ToString(), newID);
return(null);
}
SqlFile f = SqlFile.getFile(db, fsLocker, newID);
f.setDataBlockID(SqlFsConst.NOFILEDATAID);
return(f);
}
/// <summary>
/// Create a new entry in FsBlock
/// </summary>
/// <returns> new ID for the inserted node </returns>
internal static FsID addFsNode(SQLiteDatabase db, SqlFsConst.FSTYPE type, string dirName, FsID parentID)
{
long curTime = SqlFsFunc.calToFileTime(new DateTime());
List <object> colsAndValues = new List <object>(10);
colsAndValues.Add(SqlFs.FSBLOCK.fsCreateTime.ToString());
colsAndValues.Add(curTime);
colsAndValues.Add(SqlFs.FSBLOCK.fsLastModTime.ToString());
colsAndValues.Add(curTime);
colsAndValues.Add(SqlFs.FSBLOCK.fsFileSize.ToString());
colsAndValues.Add(0);
colsAndValues.Add(SqlFs.FSBLOCK.fsType.ToString());
colsAndValues.Add(type.v());
colsAndValues.Add(SqlFs.FSBLOCK.fsName.ToString());
colsAndValues.Add(dirName);
colsAndValues.Add(SqlFs.FSBLOCK.fsParent.ToString());
colsAndValues.Add(parentID);
ContentValues contValues = SqlStr.genContentValues(colsAndValues);
try
{
db.insert(SqlFs.DBNAMES.FsBlock.ToString(), null, contValues);
}
catch (Exception e)
{
SqlFsLog.debug(e);
SqlFsErrCode.CurrentError = FsErr.AddFsNodeError;
return(SqlFsConst.INVALIDID);
}
// retrieve the ID of the new entry
return(SqlFs.getLastInsertID(db));
}
/// <summary>
/// Add an empty dir
/// </summary>
/// <returns> the newly created dir </returns>
private SqlDir __addDir(string dirName)
{
if ((dirName = checkInvalidChars(dirName)) == null)
{
SqlFsErrCode.CurrentError = FsErr.InvalidChars;
return(null);
}
if (__isAlreadyExist(dirName))
{
SqlFsErrCode.CurrentError = FsErr.NameAlreadyExists;
return(null);
}
FsID newID = SqlDir.addDir(db, dirName, this.ID);
if (newID.compare(SqlFsConst.INVALIDID) <= 0)
{
SqlFsErrCode.CurrentError = FsErr.NoNewIDForNewFsNode;
return(null);
}
if (!updateChildList(SqlFsConst.FSOP.ADD, newID, FsID.toFsID(0)))
{
// delete entry just created
SqlFs.deleteEntryByID(db, SqlFs.DBNAMES.FsBlock.ToString(), SqlFs.FSBLOCK.fsID.ToString(), newID);
return(null);
}
return(SqlDir.getDir(db, fsLocker, newID));
}
public static SqlFs create(string dbPath, IFileData dummyInst, Context ctxt, AtomicBoolean isNewTableCreated)
{
SqlFsErrCode.CurrentError = FsErr.OK;
SqlFs fs = null;
try
{
if (dbPath != null)
{
fs = new SqlFs(ctxt, dbPath);
if (fs != null)
{
fs.fsLocker.FsLock;
try
{
fs.open();
fs.prepare(dummyInst, isNewTableCreated);
}
finally
{
fs.fsLocker.dispose();
}
}
}
}
catch (Exception e)
{
SqlFsLog.debug("ERROR: Cannot open database, " + e.Message);
SqlFsErrCode.CurrentError = FsErr.CannotOpenDB;
}
return(fs);
}
/// <summary>
/// delete all dirs and files recursively
/// </summary>
private bool __delete()
{
bool isOK = false;
do
{
// delete itself from parent
if (!this.ID.Equals(SqlFsConst.ROOTDIRID)) // root has no parent
{
SqlDir parent = this.Parent;
if (parent == null)
{
SqlFsErrCode.CurrentError = FsErr.NoParent;
break;
}
if (!parent.updateChildList(SqlFsConst.FSOP.DEL, this.ID, FsID.toFsID(0)))
{
break;
}
}
// delete underlying subdirs and files
List <SqlFsNode> childList = this.ChildList;
if (childList != null)
{
// delete children one by one
foreach (SqlFsNode fsNode in childList)
{
fsNode.delete();
}
}
// delete itself
if (this.ID.Equals(SqlFsConst.ROOTDIRID))
{
// for root, just clear all children
this.setField(SqlFs.FSBLOCK.fsChild, null);
}
else
{
if (!SqlFs.deleteEntryByID(db, SqlFs.DBNAMES.FsBlock.ToString(), SqlFs.FSBLOCK.fsID.ToString(), this.ID))
{
SqlFsErrCode.CurrentError = FsErr.CannotDeleteFsEntry;
break;
}
}
isOK = true;
} while (false);
return(isOK);
}
private bool __delete()
{
bool isOK = false;
do
{
// delete itself from parent
SqlDir parent = this.Parent;
if (parent == null)
{
SqlFsErrCode.CurrentError = FsErr.NoParent;
break;
}
if (!parent.updateChildList(SqlFsConst.FSOP.DEL, this.ID, FsID.toFsID(0)))
{
break;
}
// delete entry in data block table
FsID dataBlockID = this.getDataBlockID();
if (dataBlockID.compare(SqlFsConst.INVALIDID) <= 0)
{
//SqlFsLog.debug("+++ dataBlockID = " + dataBlockID.getVal());
SqlFsErrCode.CurrentError = FsErr.DataBlockIDNotValid;
break;
}
if (!SqlFs.deleteEntryByID(db, IFileData.DTABLENAME, IFileData.IDCOL, dataBlockID))
{
SqlFsErrCode.CurrentError = FsErr.CannotDeleteDataBlockEntry;
break;
}
// delete its own entry
if (!SqlFs.deleteEntryByID(db, SqlFs.DBNAMES.FsBlock.ToString(), SqlFs.FSBLOCK.fsID.ToString(), this.ID))
{
SqlFsErrCode.CurrentError = FsErr.CannotDeleteFsEntry;
break;
}
isOK = true;
} while (false);
return(isOK);
}
/// <summary>
/// Move itself to a destination path (absolute or relative)
/// </summary>
private bool __move(string destPath)
{
if (SqlFsFunc.isNullOrEmpty(destPath))
{
SqlFsErrCode.CurrentError = FsErr.EmptyString;
return(false);
}
// determine destination dir
SqlDir destDir = null;
if (destPath.StartsWith(SqlFsConst.STRPATHSEP))
{
// absolute path
SqlDir rootDir = (SqlDir)SqlFs.getFsNodeByID(db, fsLocker, SqlFsConst.ROOTDIRID); // get root
destPath = SqlFsFunc.Trim(destPath, new char[] { SqlFsConst.PATHSEP });
// if empty after trim, it refers to root
destDir = SqlFsFunc.isNullOrEmpty(destPath) ? rootDir : rootDir.getDir(destPath);
}
else
{
// relative path
SqlDir parent = this.Parent;
if (parent != null)
{
destDir = parent.getDir(destPath);
}
}
if (destDir != null)
{
return(__move(destDir));
}
SqlFsErrCode.CurrentError = FsErr.DestDirNotFound;
return(false);
}
internal virtual SqlFsNode getFsNodeByID(FsID id)
{
return(SqlFs.getFsNodeByID(db, fsLocker, id));
}
///
/// @param [in] dbPath -- absolute or relative path (inside phone memory) to the db file </param>
/// @param [in] dummyInst -- a dummy instance of a class inherited from IFileData. </param>
public static SqlFs create(string dbPath, IFileData dummyInst, Context ctxt)
{
AtomicBoolean isNewTableCreated = new AtomicBoolean(false);
return(SqlFs.create(dbPath, dummyInst, ctxt, isNewTableCreated));
}
/// <summary>
/// Create db using the default "SimpleFileData"
/// </summary>
/// @param [in] dbPath -- absolute or relative path (inside phone memory) to the db file </param>
public static SqlFs create(string dbPath, Context ctxt)
{
AtomicBoolean isNewTableCreated = new AtomicBoolean(false);
return(SqlFs.create(dbPath, new SimpleFileData(), ctxt, isNewTableCreated));
}
protected internal virtual FsID getLastInsertID(SQLiteDatabase db)
{
return(SqlFs.getLastInsertID(db));
}
