resultcollector.java

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            } finally {
                JOrphanUtils.closeQuietly(dataReader);
                JOrphanUtils.closeQuietly(bufferedInputStream);
				if (!parsedOK || errorDetected) {
                    GuiPackage.showErrorMessage(
                                "Error loading results file - see log file",
                                "Result file loader");
				}
			}
		} else {
            GuiPackage.showErrorMessage(
                    "Error loading results file - could not open file",
                    "Result file loader");			
		}
	}

	private static void writeFileStart(PrintWriter writer, SampleSaveConfiguration saveConfig) {
		if (saveConfig.saveAsXml()) {
			writer.print(XML_HEADER);
			// Write the EOL separately so we generate LF line ends on Unix and Windows
			writer.print("\n"); // $NON-NLS-1$
            String pi=saveConfig.getXmlPi();
            if (pi.length() > 0) {
                writer.println(pi);
            }
            // Can't do it as a static initialisation, because SaveService 
            // is being constructed when this is called
			writer.print(TESTRESULTS_START_V1_1_PREVER);
            writer.print(SaveService.getVERSION());
            writer.print(TESTRESULTS_START_V1_1_POSTVER);
			// Write the EOL separately so we generate LF line ends on Unix and Windows
            writer.print("\n"); // $NON-NLS-1$
		} else if (saveConfig.saveFieldNames()) {
			writer.println(CSVSaveService.printableFieldNamesToString(saveConfig));
		}
	}

	private static void writeFileEnd(PrintWriter pw, SampleSaveConfiguration saveConfig) {
		if (saveConfig.saveAsXml()) {
			pw.print("\n"); // $NON-NLS-1$
			pw.print(TESTRESULTS_END);
			pw.print("\n");// Added in version 1.1 // $NON-NLS-1$
		}
	}

	private static synchronized PrintWriter getFileWriter(String filename, SampleSaveConfiguration saveConfig)
			throws IOException {
		if (filename == null || filename.length() == 0) {
			return null;
		}
		PrintWriter writer = (PrintWriter) files.get(filename);
		boolean trimmed = true;

		if (writer == null) {
			if (saveConfig.saveAsXml()) {
				trimmed = trimLastLine(filename);
			} else {
				trimmed = new File(filename).exists();
			}
			// Find the name of the directory containing the file
			// and create it - if there is one
			File pdir = new File(filename).getParentFile();
			if (pdir != null)
				pdir.mkdirs();
			writer = new PrintWriter(new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(filename,
					trimmed)), SaveService.getFileEncoding("UTF-8")), true); // $NON-NLS-1$
			files.put(filename, writer);
		}
		if (!trimmed) {
			writeFileStart(writer, saveConfig);
		}
		return writer;
	}

	// returns false if the file did not contain the terminator
	private static boolean trimLastLine(String filename) {
		RandomAccessFile raf = null;
		try {
			raf = new RandomAccessFile(filename, "rw"); // $NON-NLS-1$
			long len = raf.length();
			if (len < MIN_XML_FILE_LEN) {
				return false;
			}
			raf.seek(len - TESTRESULTS_END.length() - 10);// TODO: may not work on all OSes?
			String line;
			long pos = raf.getFilePointer();
			int end = 0;
			while ((line = raf.readLine()) != null)// reads to end of line OR end of file
			{
				end = line.indexOf(TESTRESULTS_END);
				if (end >= 0) // found the string
				{
					break;
				}
				pos = raf.getFilePointer();
			}
			if (line == null) {
				log.warn("Unexpected EOF trying to find XML end marker in " + filename);
				raf.close();
				return false;
			}
			raf.setLength(pos + end);// Truncate the file
			raf.close();
			raf = null;
		} catch (FileNotFoundException e) {
			return false;
		} catch (IOException e) {
			log.warn("Error trying to find XML terminator " + e.toString());
			return false;
		} finally {
			try {
				if (raf != null)
					raf.close();
			} catch (IOException e1) {
				log.info("Could not close " + filename + " " + e1.getLocalizedMessage());
			}
		}
		return true;
	}

    // Only called if visualizer is non-null
	private void readSamples(TestResultWrapper testResults, Visualizer visualizer) throws Exception {
		Collection samples = testResults.getSampleResults();
		Iterator iter = samples.iterator();
		while (iter.hasNext()) {
			SampleResult result = (SampleResult) iter.next();
			if (isSampleWanted(result.isSuccessful())) {
				visualizer.add(result);
			}
		}
	}

	public void clearVisualizer() {
		// current = -1;
		if (getVisualizer() != null && getVisualizer() instanceof Clearable) {
			((Clearable) getVisualizer()).clearData();
		}
		finalizeFileOutput();
	}

	public void sampleStarted(SampleEvent e) {
	}

	public void sampleStopped(SampleEvent e) {
	}

	/**
	 * When a test result is received, display it and save it.
	 * 
	 * @param event
	 *            the sample event that was received
	 */
	public void sampleOccurred(SampleEvent event) {
		SampleResult result = event.getResult();

		if (isSampleWanted(result.isSuccessful())) {
			sendToVisualizer(result);
			if ( out != null) {// no point otherwise
				SampleSaveConfiguration config = getSaveConfig();
				result.setSaveConfig(config);
				try {
					if (config.saveAsXml()) {
						recordResult(event);
					} else {
						String savee = CSVSaveService.resultToDelimitedString(event);
						out.println(savee);
					}
				} catch (Exception err) {
					log.error("Error trying to record a sample", err); // should throw exception back to caller
				}
			}
		}
	}

	protected final void sendToVisualizer(SampleResult r) {
		if (getVisualizer() != null) {
			getVisualizer().add(r);
		}
	}

	// Only called if out != null
	private void recordResult(SampleEvent event) throws Exception {
		SampleResult result = event.getResult();
		if (!isResultMarked(result) && !this.isStats) {
			if (SaveService.isSaveTestLogFormat20()) {
				if (serializer == null) {
					serializer = new DefaultConfigurationSerializer();
				}
				out.write(OldSaveService.getSerializedSampleResult(result, serializer, getSaveConfig()));
			} else {
				SaveService.saveSampleResult(event, out);
			}
		}
	}

	/**
	 * recordStats is used to save statistics generated by visualizers
	 * 
	 * @param e
	 * @throws Exception
	 */
	public void recordStats(TestElement e) throws Exception {
		if (out == null) {
			initializeFileOutput();
		}
		if (out != null) {
			SaveService.saveTestElement(e, out);
		}
	}

	private synchronized boolean isResultMarked(SampleResult res) {
		String filename = getFilename();
		boolean marked = res.isMarked(filename);

		if (!marked) {
			res.setMarked(filename);
		}
		return marked;
	}

	private void initializeFileOutput() throws IOException {

		String filename = getFilename();
		if (out == null && filename != null) {
			if (out == null) {
				try {
					out = getFileWriter(filename, getSaveConfig());
				} catch (FileNotFoundException e) {
					out = null;
				}
			}
		}
	}

	private synchronized void finalizeFileOutput() {
		if (out != null) {
			writeFileEnd(out, getSaveConfig());
			out.close();
			files.remove(getFilename());
			out = null;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see TestListener#testIterationStart(LoopIterationEvent)
	 */
	public void testIterationStart(LoopIterationEvent event) {
	}

	/**
	 * @return Returns the saveConfig.
	 */
	public SampleSaveConfiguration getSaveConfig() {
		try {
			return (SampleSaveConfiguration) getProperty(SAVE_CONFIG).getObjectValue();
		} catch (ClassCastException e) {
			setSaveConfig(new SampleSaveConfiguration());
			return getSaveConfig();
		}
	}

	/**
	 * @param saveConfig
	 *            The saveConfig to set.
	 */
	public void setSaveConfig(SampleSaveConfiguration saveConfig) {
		getProperty(SAVE_CONFIG).setObjectValue(saveConfig);
	}

	// This is required so that
	// @see org.apache.jmeter.gui.tree.JMeterTreeModel.getNodesOfType()
	// can find the Clearable nodes - the userObject has to implement the interface.
	public void clearData() {
	}

}