Retrieving Problem Information

Example of Retrieving Problem Information in a Mesh

The following example shows how to retrieve information about a problem in the mesh:

1	Build a geometry:

Model mdl = com.comsol.model.util.ModelUtil.create("Model1");

mdl.geom().create("g",3);

mdl.geom("g").create("cyl1","Cylinder").set("h",3.0);

mdl.geom("g").create("cyl2","Cylinder").set("h",3.0).set("r",0.95);

mdl.geom("g").create("co1","Difference");

mdl.geom("g").feature("co1").selection("input").set("cyl1");

mdl.geom("g").feature("co1").selection("input2").set("cyl2");

2	Build a mesh:

MeshSequence ms = mdl.mesh().create("m", "g");

ms.feature("size").set("hauto", 9);

ms.create("ftri1","FreeTri");

ms.feature("ftri1").selection().geom(2).set(1, 2, 7, 10);

ms.create("ftet1","FreeTet");

ms.feature("ftet1").create("ms1","Size");

ms.run();

3	Check if the mesh was built with problems:

boolean problem = ms.hasProblems();

4	Get the names of the features with problems. In this case the feature ftet1:

String[] problemNames = ms.feature().problemNames();

5	Get error information:

String[] errorNames = ms.feature(problemNames[0]).problem().

errorNames();

for (String errorName : errorNames) {

  int errorDepth = ms.feature(problemNames[0]).

  problem(errorName).depth();

  for (int i=0; i<errorDepth; ++i) {

    MeshFeature errorFeature = ms.feature(problemNames[0]).problem(errorName).get(i);

    String errorMessage = errorFeature.getString("message");

    MeshSelection sel = null;

    if (errorFeature.hasSelection())

      sel = errorFeature.selection();

  }

}

6	Get warning information:

String[] warningNames = ms.feature(problemNames[0]).problem().warningNames();

MeshFeature warningFeature = ms.feature(problemNames[0]).problem(warningNames[0]);

String warningMessage = warningFeature.getString("message");

MeshSelection sel = warningFeature.selection();

Example of Retrieving Problem and Warning Information in a Solver

The same technique is also available for retrieving information about problems and warnings in a solvers sequence:

1	For a solver sequence ss1, check if there are any problems:

SolverSequence ss1

boolean problem = ss1.hasProblems();

2	Get the names of the features with problems:

String[] problemNames = ss1.feature().problemNames();

3	Get error information:

String[] errorNames = ss1.feature(problemNames[0]).problem().errorNames();

SolverFeature errorFeature = ss1.feature(problemNames[0]).problem(errorNames[0]);

String errorMessage = errorFeature.getString("message");

4	Get warning information:

String[] warningNames = ss1.feature(problemNames[0]).problem().warningNames();

SolverFeature warningFeature = ss1.feature(problemNames[0]).problem(warningNames[0]);

String warningMessage = warningFeature.getString("message");