Example usage for java.util ListIterator hasNext

Introduction

In this page you can find the example usage for java.util ListIterator hasNext.

Prototype

boolean hasNext();

Source Link

Document

Returns true if this list iterator has more elements when traversing the list in the forward direction.

Usage

From source file:edu.uci.ics.hyracks.algebricks.rewriter.rules.IntroJoinInsideSubplanRule.java

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context)
        throws AlgebricksException {
    AbstractLogicalOperator op0 = (AbstractLogicalOperator) opRef.getValue();
    if (op0.getOperatorTag() != LogicalOperatorTag.SUBPLAN) {
        return false;
    }//  w  w w .j av  a  2  s . c o m
    SubplanOperator subplan = (SubplanOperator) op0;

    Mutable<ILogicalOperator> leftRef = subplan.getInputs().get(0);
    if (((AbstractLogicalOperator) leftRef.getValue())
            .getOperatorTag() == LogicalOperatorTag.EMPTYTUPLESOURCE) {
        return false;
    }

    ListIterator<ILogicalPlan> plansIter = subplan.getNestedPlans().listIterator();
    ILogicalPlan p = null;
    while (plansIter.hasNext()) {
        p = plansIter.next();
    }
    if (p == null) {
        return false;
    }
    if (p.getRoots().size() != 1) {
        return false;
    }
    Mutable<ILogicalOperator> opRef1 = p.getRoots().get(0);

    while (true) {
        AbstractLogicalOperator op1 = (AbstractLogicalOperator) opRef1.getValue();
        if (op1.getInputs().size() != 1) {
            return false;
        }
        if (op1.getOperatorTag() == LogicalOperatorTag.SELECT) {
            Mutable<ILogicalOperator> op2Ref = op1.getInputs().get(0);
            AbstractLogicalOperator op2 = (AbstractLogicalOperator) op2Ref.getValue();
            if (op2.getOperatorTag() != LogicalOperatorTag.SELECT && descOrSelfIsScanOrJoin(op2)) {
                Set<LogicalVariable> free2 = new HashSet<LogicalVariable>();
                OperatorPropertiesUtil.getFreeVariablesInSelfOrDesc(op2, free2);
                if (free2.isEmpty()) {
                    Set<LogicalVariable> free1 = new HashSet<LogicalVariable>();
                    OperatorPropertiesUtil.getFreeVariablesInSelfOrDesc(op1, free1);
                    if (!free1.isEmpty()) {
                        OperatorManipulationUtil.ntsToEts(op2Ref, context);
                        NestedTupleSourceOperator nts = new NestedTupleSourceOperator(
                                new MutableObject<ILogicalOperator>(subplan));
                        Mutable<ILogicalOperator> ntsRef = new MutableObject<ILogicalOperator>(nts);
                        Mutable<ILogicalOperator> innerRef = new MutableObject<ILogicalOperator>(op2);
                        InnerJoinOperator join = new InnerJoinOperator(
                                new MutableObject<ILogicalExpression>(ConstantExpression.TRUE), ntsRef,
                                innerRef);
                        op2Ref.setValue(join);
                        context.computeAndSetTypeEnvironmentForOperator(nts);
                        context.computeAndSetTypeEnvironmentForOperator(join);
                        return true;
                    }
                }
            }
        }
        opRef1 = op1.getInputs().get(0);
    }
}

From source file:net.alchemiestick.katana.winehqappdb.filter_dialog.java

private String getNamedData(String name) {
    ListIterator<NameValuePair> itr = webData.listIterator();
    while (itr.hasNext()) {
        NameValuePair t = itr.next();
        if (t.getName() == name) {
            return t.getValue();
        }//from w w  w  . ja v a2s . c o  m
    }
    return new String();
}

From source file:edu.harvard.mcz.imagecapture.ConfiguredBarcodePositionTemplateDetector.java

protected String detectTemplateForImage(File anImageFile, CandidateImageFile scannableFile, boolean quickCheck)
        throws UnreadableFileException {
    // Set default response if no template is found.
    String result = PositionTemplate.TEMPLATE_NO_COMPONENT_PARTS;

    // Read the image file, if possible, otherwise throw exception.
    if (!anImageFile.canRead()) {
        throw new UnreadableFileException("Unable to read " + anImageFile.getName());
    }/*from   w w  w. j a  va 2 s  .c o m*/

    BufferedImage image = null;
    try {
        image = ImageIO.read(anImageFile);
    } catch (IOException e) {
        throw new UnreadableFileException("IOException trying to read " + anImageFile.getName());
    }

    // iterate through templates and check until the first template where a barcode is found
    List<String> templates = PositionTemplate.getTemplateIds();
    ListIterator<String> i = templates.listIterator();
    boolean found = false;
    while (i.hasNext() && !found) {
        try {
            // get the next template from the list
            PositionTemplate template = new PositionTemplate((String) i.next());
            log.debug("Testing template: " + template.getTemplateId());
            if (template.getTemplateId().equals(PositionTemplate.TEMPLATE_NO_COMPONENT_PARTS)) {
                // skip, this is the default result if no other is found.
            } else {
                if (image.getWidth() == template.getImageSize().getWidth()) {
                    // Check to see if the barcode is in the part of the template
                    // defined by getBarcodeULPosition and getBarcodeSize.
                    String text;
                    if (scannableFile == null) {
                        text = CandidateImageFile.getBarcodeTextFromImage(image, template, quickCheck);
                    } else {
                        text = scannableFile.getBarcodeText(template);
                    }
                    log.debug("Found:[" + text + "] ");
                    if (text.length() > 0) {
                        // a barcode was scanned 
                        // Check to see if it matches the expected pattern.
                        // Use the configured barcode matcher.
                        if (Singleton.getSingletonInstance().getBarcodeMatcher().matchesPattern(text)) {
                            found = true;
                            log.debug("Match to:" + template.getTemplateId());
                            result = template.getTemplateId();
                        }
                    }
                } else {
                    log.debug("Skipping as template " + template.getTemplateId()
                            + " is not same size as image. ");
                }
            }
        } catch (NoSuchTemplateException e) {
            // Ending up here means a serious error in PositionTemplate
            // as the list of position templates returned by getTemplates() includes
            // an entry that isn't recognized as a valid template.  
            log.fatal(
                    "Fatal error.  PositionTemplate.getTemplates() includes an item that isn't a valid template.");
            log.trace(e);
            ImageCaptureApp.exit(ImageCaptureApp.EXIT_ERROR);
        }
    }
    return result;
}

From source file:net.alchemiestick.katana.winehqappdb.filter_dialog.java

private void setNamedData(String name, String value) {
    ListIterator<NameValuePair> itr = webData.listIterator();
    while (itr.hasNext()) {
        NameValuePair t = itr.next();
        if (t.getName() == name) {
            itr.set(new BasicNameValuePair(name, value));
            return;
        }//from  w ww  . j  a v a  2  s.c  o m
    }
    webData.add(new BasicNameValuePair(name, value));
}

From source file:com.bluelotussoftware.apache.commons.fileupload.example.FileUploadServlet.java

/**
 * Processes requests for both HTTP//from w  ww .j  av a  2  s. c  om
 * <code>GET</code> and
 * <code>POST</code> methods.
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    boolean isMultiPart = ServletFileUpload.isMultipartContent(request);
    log("isMultipartContent: " + isMultiPart);
    log("Content-Type: " + request.getContentType());
    if (isMultiPart) {

        // Create a factory for disk-based file items
        DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();

        /*
         * Set the file size limit in bytes. This should be set as an
         * initialization parameter
         */
        diskFileItemFactory.setSizeThreshold(1024 * 1024 * 10); //10MB.

        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(diskFileItemFactory);

        // Parse the request
        List items = null;
        try {
            items = upload.parseRequest(request);
        } catch (FileUploadException ex) {
            log("Could not parse request", ex);
        }

        PrintWriter out = response.getWriter();
        out.print("<html><head><title>SUCCESS</title></head><body><h1>DONE!</h1>");

        ListIterator li = items.listIterator();
        while (li.hasNext()) {
            FileItem fileItem = (FileItem) li.next();
            if (fileItem.isFormField()) {
                processFormField(fileItem);
            } else {
                out.append(processUploadedFile(fileItem));
            }
        }
        out.print("</body></html>");
        out.flush();
        out.close();

    }
}

From source file:de.unisb.cs.st.javaslicer.tracer.instrumentation.PauseTracingInstrumenter.java

@SuppressWarnings("unchecked")
public void transform(final ClassNode classNode) {
    final ListIterator<MethodNode> methodIt = classNode.methods.listIterator();
    while (methodIt.hasNext()) {
        final MethodNode method = methodIt.next();
        transformMethod(method, methodIt, Type.getObjectType(classNode.name).getClassName());
    }/*  w  ww  .j a  va 2s .  co m*/
}

From source file:edu.cornell.mannlib.vitro.webapp.controller.json.GetEntitiesByVClass.java

@Override
protected JSONArray process() throws ServletException {
    log.debug("in getEntitiesByVClass()");
    String vclassURI = vreq.getParameter("vclassURI");
    WebappDaoFactory daos = vreq.getUnfilteredWebappDaoFactory();

    if (vclassURI == null) {
        throw new ServletException("getEntitiesByVClass(): no value for 'vclassURI' found in the HTTP request");
    }/* ww w. j  a  v  a2s  . c  om*/

    VClass vclass = daos.getVClassDao().getVClassByURI(vclassURI);
    if (vclass == null) {
        throw new ServletException("getEntitiesByVClass(): could not find vclass for uri '" + vclassURI + "'");
    }

    List<Individual> entsInVClass = daos.getIndividualDao().getIndividualsByVClass(vclass);
    if (entsInVClass == null) {
        throw new ServletException(
                "getEntitiesByVClass(): null List<Individual> retruned by getIndividualsByVClass() for "
                        + vclassURI);
    }
    int numberOfEntsInVClass = entsInVClass.size();

    List<Individual> entsToReturn = new ArrayList<Individual>(REPLY_SIZE);
    String requestHash = null;
    int count = 0;
    boolean more = false;
    /* we have a large number of items to send back so we need to stash the list in the session scope */
    if (entsInVClass.size() > REPLY_SIZE) {
        more = true;
        HttpSession session = vreq.getSession(true);
        requestHash = Integer.toString((vclassURI + System.currentTimeMillis()).hashCode());
        session.setAttribute(requestHash, entsInVClass);

        ListIterator<Individual> entsFromVclass = entsInVClass.listIterator();
        while (entsFromVclass.hasNext() && count < REPLY_SIZE) {
            entsToReturn.add(entsFromVclass.next());
            entsFromVclass.remove();
            count++;
        }
        if (log.isDebugEnabled()) {
            log.debug("getEntitiesByVClass(): Creating reply with continue token, found " + numberOfEntsInVClass
                    + " Individuals");
        }
    } else {
        if (log.isDebugEnabled())
            log.debug("getEntitiesByVClass(): sending " + numberOfEntsInVClass
                    + " Individuals without continue token");
        entsToReturn = entsInVClass;
        count = entsToReturn.size();
    }

    //put all the entities on the JSON array
    JSONArray ja = individualsToJson(entsToReturn);

    //put the responseGroup number on the end of the JSON array
    if (more) {
        try {
            JSONObject obj = new JSONObject();
            obj.put("resultGroup", "true");
            obj.put("size", count);
            obj.put("total", numberOfEntsInVClass);

            StringBuffer nextUrlStr = vreq.getRequestURL();
            nextUrlStr.append("?").append("getEntitiesByVClass").append("=1&").append("resultKey=")
                    .append(requestHash);
            obj.put("nextUrl", nextUrlStr.toString());

            ja.put(obj);
        } catch (JSONException je) {
            throw new ServletException("unable to create continuation as JSON: " + je.getMessage());
        }
    }

    log.debug("done with getEntitiesByVClass()");
    return ja;
}

From source file:com.offbynull.voip.kademlia.model.NodeLeastRecentSet.java

public ActivityChangeSet remove(Node node) {
    Validate.notNull(node);/*ww w .  j  a  va 2 s  . c  o m*/

    Id nodeId = node.getId();

    InternalValidate.matchesLength(baseId.getBitLength(), nodeId);

    ListIterator<Activity> it = entries.listIterator();
    while (it.hasNext()) {
        Activity entry = it.next();

        Id entryId = entry.getNode().getId();

        if (entryId.equals(nodeId)) {
            InternalValidate.matchesLink(entry.getNode(), node);

            // remove
            it.remove();
            return ActivityChangeSet.removed(entry);
        }
    }

    return ActivityChangeSet.NO_CHANGE;
}

From source file:gov.nih.nci.ncicb.cadsr.common.jsp.tag.handler.AltQuestionText.java

private Question getQuestionFromList(String questionIdSeq, List questions) {
    ListIterator iterate = questions.listIterator();

    while (iterate.hasNext()) {
        Question question = (Question) iterate.next();

        if (question.getQuesIdseq().equals(questionIdSeq)) {
            return question;
        }//from www.  ja v  a  2 s  . c  o m
    }
    return null;
}

From source file:de.fhg.iais.asc.ui.MyCortexStarter.java

/**
 * Configures this object according to a list of command line arguments.<br>
 * <br>/*from   w ww.  j  a  v  a 2s .c o  m*/
 * The following arguments are recognized and processed from the left to the
 * right. Initially all servers are enabled.<br>
 * <br>
 * -conf &lt;ConfigName&gt; sets the name of the spring main configuration.
 * If there is more than one "-conf" argument, the rightmost one will be
 * used. If there is no "-conf" argument, the "default" spring main
 * configuration is used.<br>
 * <br>
 * +ALL enables all servers.<br>
 * -ALL disables all servers.<br>
 * +&lt;servername&gt; enables a single server.<br>
 * -&lt;servername&gt; disables a single server.<br>
 * <br>
 * Examples: to start all servers without the triplestore:<br>
 * +ALL -TRIPLESTORE<br>
 * Examples: to start only the triplestore server:<br>
 * -ALL +TRIPLESTORE<br>
 * Examples: to start the triplestore and the search server:<br>
 * -ALL +TRIPLESTORE +SEARCH<br>
 * Nonsense-examples: to start the search server:<br>
 * +ALL +TRIPLESTORE -ALL +SEARCH<br>
 */
private void configure(ListIterator<String> argIterator) {
    while (argIterator.hasNext()) {
        handleNextArgument(argIterator);
    }
}