* \ingroup Model
*/
//=======================================================================
- /// Concrete TreeHandler which manages a tree stored in a sqlite database
+ /// Concrete TreeHandler which manages a Tree stored in a sqlite database
class SQLiteTreeHandler : virtual public TreeHandler
{
public:
- ///====================================================================
+ //====================================================================
/// Ctor with database file name
SQLiteTreeHandler(const std::string& filename);
/// Dtor
virtual ~SQLiteTreeHandler();
- ///====================================================================
+ //====================================================================
- ///====================================================================
+ //====================================================================
/// Returns the sqlite db file name
const std::string& GetFileName() const { return mFileName; }
- ///====================================================================
+ //====================================================================
- ///====================================================================
- /// QUERY METHODS
+ //====================================================================
+ // QUERY METHODS
/// Is the 'source' readable ?
virtual bool IsReadable() { return true; }
/// Is the 'source' writable ?
virtual bool IsWritable() { return true; }
- ///====================================================================
+ //====================================================================
- ///====================================================================
- /// INITIALIZATION / FINALIZATION
- ///====================================================================
+ //====================================================================
+ // INITIALIZATION / FINALIZATION
+ //====================================================================
- ///====================================================================
+ //====================================================================
/// Opens an existing 'source'
- /// Default mode is read only
- /// If IsWritable and writable==true then opens in read/write mode
+ // Default mode is read only
+ // If IsWritable and writable==true then opens in read/write mode
virtual bool Open(bool writable = false);
/// Closes the 'source'
virtual bool Close();
/// Creates a new 'source'
- /// Default mode is read only
- /// If IsWritable and writable==true then opens in read/write mode
+ // Default mode is read only
+ // If IsWritable and writable==true then opens in read/write mode
virtual bool Create(bool writable = false);
/// Destroys the 'source'
virtual bool Destroy();
- ///====================================================================
+ //====================================================================
- ///====================================================================
+ //====================================================================
// READ METHODS
- ///====================================================================
+ //====================================================================
- ///====================================================================
+ //====================================================================
/// Returns the number of children of the Node *WITHOUT LOADING THEM*
- /// REM : The Tree itself is a Node and asking for its number of
- /// children returns the number of children of level 1.
+ // REM : The Tree itself is a Node and asking for its number of
+ // children returns the number of children of level 1.
virtual unsigned int GetNumberOfChildren(tree::Node* n);
- ///====================================================================
+ //====================================================================
- ///====================================================================
+ //====================================================================
/// Recursively loads the children of node 'parent' until maxlevel
- /// is reached.
- /// If parent == NULL or parent == tree then starts with the 'children' of
- /// the tree itself.
- /// Returns the total number of children loaded.
+ // is reached.
+ // If parent == NULL or parent == tree then starts with the 'children' of
+ // the tree itself.
+ // Returns the total number of children loaded.
virtual int LoadChildren(tree::Node* parent, int maxlevel);
- ///====================================================================
+ //====================================================================
- ///====================================================================
+ //====================================================================
/// Unloads the Node and its descendants
- /// WITHOUT altering the source, e.g. the database
+ // WITHOUT altering the source, e.g. the database
virtual void UnLoad(tree::Node* n);
///====================================================================
- ///====================================================================
- /// WRITE METHODS : WORK ONLY IN WRITE MODE
- ///====================================================================
+ //====================================================================
+ // WRITE METHODS : WORK ONLY IN WRITE MODE
+ //====================================================================
/// Adds a branch in the tree with the attributes provided
- /// returns the Level in the tree where the branch was connected
- /// (-1 for error, 0 for top level, etc. )
- /// Of course the branch is loaded on exit
+ // returns the Level in the tree where the branch was connected
+ // (-1 for error, 0 for top level, etc. )
+ // Of course the branch is loaded on exit
virtual int AddBranch( const AttributeMapType& attr );
- /// Removes the node and its descendants
+ // Removes the node and its descendants
virtual bool Remove(tree::Node*);
- /// Sets an attribute of a Node
+ // Sets an attribute of a Node
virtual bool SetAttribute(tree::Node*,
const std::string& key,
const std::string& value);
//======================================================================
//======================================================================
+
/// Returns the parent to which the branch defined by the attributes
- /// provided must be grafted
+ // provided must be grafted
tree::Node* DBGetParent( const AttributeMapType& attr);
//======================================================================
//======================================================================
+
/// Loads the children of Node parent
- /// Can recurse to numberoflevels levels
- /// \return The total number of Node loaded (may be at different levels)
+ // Can recurse to numberoflevels levels
+ // \return The total number of Node loaded (may be at different levels)
int DBLoadChildren( tree::Node* parent, int numberoflevels = 1);
//======================================================================
//======================================================================
+
/// Appends to string s the SQL command to set the attributes values
- /// of node n
+ // of node n
void SQLAppendAttributesValues(tree::Node* n, std::string& s);
//======================================================================
//======================================================================
+
/// Graft the branch defined by the attributes to the parent
void DBGraftToParent( tree::Node* parent, const AttributeMapType& attr);
//======================================================================
//======================================================================
+
/// Sets an attribute of a Node and updates the database
bool DBSetAttribute(tree::Node*,
const std::string& key,
const std::string& value);
//======================================================================
//======================================================================
+
/// Inserts the Node in the database
void DBInsert(tree::Node* n);
//======================================================================
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