Recuperacion de nodos eliminados.

[z.facultad/75.52/treemulator.git] / src / btree_data.cpp

diff --git a/src/btree_data.cpp b/src/btree_data.cpp
index dd6f709b770d9d57d15b86bbaf220a0c2aa22bd7..1adeb8303d18aec14e4a01b4679126e5bdd17279 100644 (file)
--- a/src/btree_data.cpp
+++ b/src/btree_data.cpp
@@ -1,54 +1,140 @@
 
 #include "btree_data.h"
 
 #include "btree_data.h"

+#include "btree.h"

 
 

-BTreeData::BTreeData (uchar *node)
+BTreeData::BTreeData (uchar *node, int tree_type)

 {
        /* TODO : Aca deberia detectar el tipo de clave (necesito
         * info desde el arbol
         */
 {
        /* TODO : Aca deberia detectar el tipo de clave (necesito
         * info desde el arbol
         */

-       clave = new ClaveFija (node);
+       if (tree_type == BTree::KEY_FIXED)
+               clave = new ClaveFija (node);
+       else
+               clave = new ClaveVariable (node);

        node += clave->Size ();
 
        memcpy (&hijo, node, sizeof (uint));
 }
 
        node += clave->Size ();
 
        memcpy (&hijo, node, sizeof (uint));
 }
 

+BTreeData::BTreeData (Clave *k, uint child)
+{
+       clave = k;
+       hijo = child;
+}
+

 BTreeData::~BTreeData ()
 {
 BTreeData::~BTreeData ()
 {

+       if (clave) {
+               delete clave;
+               clave = NULL;
+       }

 }
 
 }
 

-uint BTreeData::Size ()
+uint BTreeData::Size () const

 {
        uint s = sizeof (uint);
        if (clave) s += clave->Size ();
 {
        uint s = sizeof (uint);
        if (clave) s += clave->Size ();

-
+       else std::cout << "No tengo clave\n";

        return s;
 }
 
        return s;
 }
 

-uchar* BTreeData::ToArray ()
+uchar* BTreeData::ToArray () const

 {
        uchar *out = new uchar[Size()];
 {
        uchar *out = new uchar[Size()];

-       memcpy (out, clave->ToArray (), clave->Size ());
-       memcpy (out+clave->Size (), &hijo, sizeof (uint));
+       if (clave) {
+               uchar *n = clave->ToArray ();
+               memcpy (out, n, clave->Size ());
+               memcpy (out+clave->Size (), &hijo, sizeof (uint));
+               delete [] n;
+       } else
+               memcpy (out, &hijo, sizeof (uint));

        return out;
 }
 
 bool BTreeData::operator < (const BTreeData &data) const
 {
        return out;
 }
 
 bool BTreeData::operator < (const BTreeData &data) const
 {

+       if (!data.clave) return false;
+

        return (*clave) < (*(data.clave));
 }
 
        return (*clave) < (*(data.clave));
 }
 

+bool BTreeData::operator == (const BTreeData &data) const
+{
+       if (!data.clave) return false;
+
+       return (*clave) == (*(data.clave));
+}
+
+bool BTreeData::Abrev (BTreeData *anterior)
+{
+       if (anterior == NULL) return false;
+
+       ClaveVariable *c = (ClaveVariable *)clave;
+       return c->Abrev (dynamic_cast<ClaveVariable *>(anterior->GetKey ()));
+}
+
+bool BTreeData::DesAbrev (BTreeData *anterior)
+{
+       if (anterior == NULL) return false;
+
+       ClaveVariable *c = (ClaveVariable *)clave;
+       return c->DesAbrev (dynamic_cast<ClaveVariable *>(anterior->GetKey ()));
+}
+
+BTreeLeafData::BTreeLeafData (uchar *node, int key_type)
+{
+       hijo = 0;       
+       if (key_type == BTree::KEY_FIXED)
+               clave = new ClaveFija (node);
+       else
+               clave = new ClaveVariable (node);
+}

 
 BTreeLeafData::~BTreeLeafData ()
 {
 
 BTreeLeafData::~BTreeLeafData ()
 {

+       if (clave) {
+               delete clave; 
+               clave = NULL;
+       }

 }
 
 }
 

-uint BTreeLeafData::Size ()
+uint BTreeLeafData::Size () const

 {
 {

+       if (!clave) {
+               std::cout << "BTreeLeafData::Size : No tengo clave!" << std::endl;
+               return 0;
+       }

        return clave->Size ();
 }
 
        return clave->Size ();
 }
 

-uchar* BTreeLeafData::ToArray ()
+uchar* BTreeLeafData::ToArray () const

 {
        return clave->ToArray ();
 }
 
 {
        return clave->ToArray ();
 }
 

+BTreeChildData::BTreeChildData (uchar *node)
+{
+       memcpy (&hijo, node, sizeof (uint));
+       clave = NULL;
+}
+
+BTreeChildData::~BTreeChildData ()
+{
+}
+
+uint BTreeChildData::Size () const
+{
+       return sizeof (uint);
+}
+
+uchar* BTreeChildData::ToArray () const
+{
+       uchar *out = new uchar[Size()];
+       memcpy (out, &hijo, sizeof (uint));
+       return out;
+}
+
+bool BTreeChildData::operator < (const BTreeData &data) const
+{
+       return false;
+}