Changeset 1436:e0beb94d08bf in lemon-0.x for lemon/lp_cplex.cc

Timestamp:

05/26/05 14:16:16 (19 years ago)

Author:

athos

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1910

Message:

_copyLp(), _newLp() implemented.

File:

• lemon/lp_cplex.cc (modified) (3 diffs)

lemon/lp_cplex.cc

@@ -22 +22 @@
   
   LpCplex::LpCplex() : LpSolverBase() {
-    env = NULL;
-    lp = NULL;
-    env = CPXopenCPLEXdevelop(&status);     
-//     if (Env == NULL)
-//     {
-//          fprintf(stderr,"A CPLEX környezet megnyitása sikertelen.\n");
-//       CPXgeterrorstring(Env, Status, ErrorMsg);
-//       fprintf(stderr,"%s",ErrorMsg);
-//       goto Terminate;
-//     }
-    
-    // *** A problema létrehozása ***
+
+    //    env = CPXopenCPLEXdevelop(&status);     
+    env = CPXopenCPLEX(&status);     
     lp = CPXcreateprob(env, &status, "LP problem");
-    
-    //    if (Problem == NULL)
-//     {
-//      fprintf(stderr,"Az LP létrehozása sikertelen");
-//      goto Terminate;
-//     }
-    
+    //CPXmsg (cpxresults, "Hello-bello\n");
   }
   
   LpCplex::~LpCplex() {
-    status = CPXfreeprob(env,&lp); 
-    //       if (Status != 0)
-    //  {
-//        fprintf(stderr,"A CPLEX feladat törlése sikertelen.\n");
-//        CPXgeterrorstring(Env, Status, ErrorMsg);
-//        fprintf(stderr,"%s",ErrorMsg);
-//        goto Terminate;
-//      }
-       
-    status = CPXcloseCPLEX(&env); 
-    //       if (Status != 0)
-    //  {
-    //    fprintf(stderr,"A CPLEX környezet bezárása sikertelen.\n");
-//        CPXgeterrorstring(Env, Status, ErrorMsg);
-//        fprintf(stderr,"%s",ErrorMsg);
-//        goto Terminate;
-//      }
-      
+    CPXfreeprob(env,&lp); 
+    CPXcloseCPLEX(&env); 
   }
   
   LpSolverBase &LpCplex::_newLp() 
   {
-    return *(LpSolverBase*)0;
-  }
+    //The first approach opens a new environment
+    LpCplex* newlp=new LpCplex();
+    return *newlp;
+  }
+
   LpSolverBase &LpCplex::_copyLp() {
-    return *(LpSolverBase*)0;
-    //Ez lesz majd CPXcloneprob (env, lp, &status);
+    //The first approach opens a new environment
+    LpCplex* newlp=new LpCplex();
+    //The routine CPXcloneprob can be used to create a new CPLEX problem 
+    //object and copy all the problem data from an existing problem 
+    //object to it. Solution and starting information is not copied.
+    newlp->lp = CPXcloneprob (env, lp, &status);
+    return *newlp;
   }
 
@@ -83 +60 @@
     return i;
   }
+
   
   int LpCplex::_addRow() 
@@ -98 +76 @@
 
   void LpCplex::_eraseCol(int i) {
-    ///\todo Not implemented yet
+    CPXdelcols (env, lp, i, i);
   }
   
   void LpCplex::_eraseRow(int i) {
-    ///\todo Not implemented yet
+    CPXdelrows (env, lp, i, i);
   }