Hello,

I want to open and execute the simulation models from my java code.

I imported the sources of Sphinx and loaded the example model (osc.scp) successfully.

Now i want to start the simulation. Because i didn't found any documentation about this, I tried it with the ModelExecutor. Here is my entire code:

Code:

SDModel model; String projectFileName = "model/osc.sdp"; ZipFile zipFile = new ZipFile(projectFileName); ZipEntry modelEntry = zipFile.getEntry("model.sdmodel"); InputStream modelXml = zipFile.getInputStream(modelEntry); try {        model = SDModelSerializator.modelFromXML(modelXml); } finally {         modelXml.close(); } //executions Settings saved in the model ModellingSettings executionSettings = new ModellingSettings(); executionSettings.setStartTime(0.0); executionSettings.setEndTime(50.0); executionSettings.setDT(100); executionSettings.setReportingPeriod(1);                         ModelExecutor executor = new ModelExecutor(model, executionSettings);                 executor.start(); //repeat, doing all the ticks executor.doTick(); executor.stop();

I didn't modified the model, but there comes an exception:

Code:

org.sphinxes.exception.InconcistentModelException: There are errors in the model: Fehler in Formel: k = 25*exp(-0.05*TIME )         at org.sphinxes.sdmodel.execution.ModelExecutor.checkModel(ModelExecutor.java:134)         at org.sphinxes.sdmodel.execution.ModelExecutor.<init>(ModelExecutor.java:116)         at test.SphinxTester.main(SphinxTester.java:45)

1. Is this the right way to execute the model from java? Are there any other things I have to setup before executing?
2. How do I get to the simulation results? By accessing the model and iterate through all elements?
3. Is there a xml-schema for the xml-Model File in the zip archive?

Thanks!

Christian

Yesterday I tried again and now it works.

Here the solution for everyone, who wants to do similar things.

To let the ModelExecutor understand the formulas, you need to setup a FunctionsLoader, which extends the AbstractFormulaFunctionsLoader:

Code:

public class FormulaFunctionsLoader extends AbstractFormulaFunctionsLoader {         @Override         public void loadFunctions() {                 try {                         clearFunctions();                         InputStream stream = new FileInputStream("functions/functions_standard.xml");                         loadFunctionsFromStream(stream);                 } catch (FileNotFoundException e) {                 }         } }

The xml funcsions file is located in the sources.

Then you need to load it, before executing the model:

Code:

FormulaFunctionsLoader loader = new FormulaFunctionsLoader(); loader.loadFunctions(); FormulaFunctions.setFunctionsLoader(loader);

Now Sphinx knows how to handle with special functions.

Executing the model with following code works very well:

Code:

ModelExecutor executor = new ModelExecutor(model, executionSettings); executor.init(); executor.start(); while (executor.getCurrentTime() < endTime) {         executor.doTick();         String elementName = model.getStocks().get(0).getName();         System.out.println(elementName + ": " + executor.getEntityExecutor(elementName).getValue()); }                      executor.stop();

Again the question:
1. Is there any documentation about running Sphinx directly from java?
2. Are there xml-Schema definitions for the xml-files?

Christian