CEP.GenerateStream.java Source code

Introduction

Here is the source code for CEP.GenerateStream.java

Source

/*
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 */
package CEP;

import com.espertech.esper.client.EPRuntime;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import weka.core.Instance;
import weka.core.Instances;
import weka.core.converters.ArffLoader;

/**
 *
 * @author gs023850
 */
public class GenerateStream implements Runnable {
    private EPRuntime cepRT;

    public GenerateStream(EPRuntime cepRT) {
        this.cepRT = cepRT;
    }

    public void run() {
        MakeStream();
    }

    public void MakeStream() {
        File file = new File("C:\\Users\\Weary\\Documents\\w4ndata\\w4ndata.arff");
        String pc = System.getProperty("user.dir").toString();
        if (pc.contains("gs023850")) {
            file = new File("C:\\Users\\gs023850\\Documents\\w4ndata\\w4ndata.arff");
        }
        try {
            ArffLoader loader = new ArffLoader();
            loader.setFile(file);
            Instances structure = loader.getStructure();
            int j = structure.numAttributes();

            HeaderManager.SetStructure(new Instances(structure));
            Instance current;
            long previousTimeStamp = 0;
            String timeStamp = "0";
            long wait = 0;

            while ((current = loader.getNextInstance(structure)) != null) {
                timeStamp = current.stringValue(0);
                cepRT.sendEvent(current);
                System.out.println("Sending event");
                previousTimeStamp = WaitTime(timeStamp, previousTimeStamp, wait);
            }
        } catch (Exception e) {
            if (e.equals(new FileNotFoundException())) {
                System.out.println("File not found - could not generate stream");
                return;
            } else if (e.equals(new IOException())) {
                System.out.println("Unable to read file");
            } else if (e.equals(new NumberFormatException())) {
                System.out.println("Unable to convert to time to number - bad time");
            } else {
                System.out.println(e.toString());
            }
        }
    }

    ///Extract the time to hang the thread from the previous and next timestamp
    long WaitTime(String timeStamp, long previousTimeStamp, long wait) throws InterruptedException {
        timeStamp = timeStamp.substring(14, 16);
        long time = Long.parseLong(timeStamp);
        wait = (time - previousTimeStamp) * 100;
        if (wait < 0 || previousTimeStamp == 0) {
            wait = 1;
        }
        previousTimeStamp = time;
        System.out.println("Waiting: " + wait);
        Thread.sleep(wait);
        return previousTimeStamp;
    }

    void CleanHeader(ArrayList<String> header) {

    }

}