X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/6fcd86dce909f05de818fdd78d76e70aabc3ad22..2ab8041933e77875de62bc73e76febc528af258e:/src/btree.h

diff --git a/src/btree.h b/src/btree.h
index cacd29b..a67fa4c 100644
--- a/src/btree.h
+++ b/src/btree.h
@@ -44,18 +44,24 @@
  *    tomar una idea simimar)
  */
 
+#include <iostream>
 #include <string>
+#include <list>
+#include "common.h"
+#include "clave.h"
+#include "clave_fija.h"
+#include "clave_variable.h"
+#include "btree_data.h"
 
 /* alias para codear menos :) */
-typedef unsigned char uchar;
 
 /** Encabezado del archivo BTree */
-typedef struct _btree_file_ {
-	unsigned int block_size;
-} BTreeFileHeader;
+struct BTreeFileHeader {
+	uint block_size;
+};
 
 /** Encabezado de un bloque */
-typedef struct _btree_header_ {
+struct BTreeNodeHeader {
 	/** Indica a que nivel corresponde un bloque
 	 *
 	 *  nivel == 0 : una hoja
@@ -71,7 +77,7 @@ typedef struct _btree_header_ {
 
 	/** Cantidad de elementos en el nodo */
 	unsigned int item_count;
-} BTreeHeader;
+};
 
 /** Crea un nuevo arbol B
  *
@@ -81,24 +87,48 @@ typedef struct _btree_header_ {
  */
 class BTree {
 	public:
-		BTree (const char *filename, unsigned int block_size, bool create_new_file = false);
+		BTree (const std::string &filename, unsigned int block_size, int k_t = KEY_FIXED, bool create_new_file = false);
 		~BTree ();
 
-		void AddKey ();
-		void DelKey ();
+		/** Tipos de clave a usar */
+		enum {
+			KEY_FIXED,
+			KEY_VARIABLE
+		};
+
+		void AddKey (const Clave &k);
+		void DelKey (const Clave &k);
+
+	protected:
+		Clave* AddKeyR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+		Clave* AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+		Clave* AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+
+		void WriteFileHeader ();
 
-	private:
-		void write_tree_header ();
-		void write_block (uchar *block, uint num);
+		void WriteBlock (uchar *block, uint num);
+		uchar *ReadBlock (uint num);
+		uchar *NewBlock (uint &num);
+
+		void ReadNodoHeader (uchar *node, BTreeNodeHeader *header);
+		void WriteNodoHeader (uchar *node, BTreeNodeHeader *header);
+
+		std::list<BTreeData *> ReadKeys (uchar *node, BTreeNodeHeader &node_header);
+		void WriteKeys (uchar *node, BTreeNodeHeader &node_header, std::list<BTreeData *> &keys);
 
 		std::string filename;
 		BTreeFileHeader header;
+		int key_type;
 
 		/** Apunta al archivo de datos, asi se abre solo 1 vez
 		 *
 		 *  \TODO Ver si vale la pena
 		 */
 		FILE *fp;
+
+
+		/* DEBUG */
+		void PrintNode (uint num);
 };
 
 #endif // _B_TREE_H