Example usage for java.util ListIterator hasPrevious

Introduction

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

Prototype

boolean hasPrevious();

Source Link

Document

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

Usage

From source file:org.netflux.core.RecordMetadata.java

/**
 * Removes from this metadata all the field metadata with names included in the supplied collection.
 * //from w w  w .j a v  a 2s  . c  om
 * @param fieldNames the names of the field metadata to remove.
 * @throws NullPointerException if the specified collection is <code>null</code>.
 */
public void remove(Collection<String> fieldNames) {
    LinkedHashMap<String, Integer> fieldsToRemove = (LinkedHashMap<String, Integer>) this.fieldIndexes.clone();
    fieldsToRemove.keySet().retainAll(fieldNames);

    List<FieldMetadata> newFieldMetadata = (List<FieldMetadata>) this.fieldMetadata.clone();

    ListIterator<Integer> fieldIndexIterator = new ArrayList<Integer>(fieldsToRemove.values())
            .listIterator(fieldsToRemove.size());
    while (fieldIndexIterator.hasPrevious()) {
        newFieldMetadata.remove(fieldIndexIterator.previous());
    }

    this.setFieldMetadata(newFieldMetadata);
}

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From source file:samples.com.axiomine.largecollections.util.TurboListSample.java

public static void workOnTurboList(TurboList<Integer> lst) {
    try {/*from  w w  w  . j a  v  a 2s  .  com*/
        ListIterator<Integer> it = lst.listIterator();

        for (int i = 0; i < 10; i++) {
            boolean b = lst.add(i);
            Assert.assertEquals(true, true);
        }
        System.out.println("Size of map=" + lst.size());
        System.out.println("Value for key 0=" + lst.get(0));
        ;
        System.out.println("Now remove key 0");
        try {
            int i = lst.remove(0);
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }

        int i = lst.remove(9);
        System.out.println("Value for deleted key=" + i);
        ;
        System.out.println("Size of map=" + lst.size());

        lst.close();
        boolean b = false;
        try {
            lst.add(9);
        } catch (Exception ex) {
            System.out.println("Exception because acces after close");
            b = true;
        }
        lst.open();
        System.out.println("Open again");
        b = lst.add(9);

        Assert.assertEquals(true, b);
        i = lst.set(9, 99);
        Assert.assertEquals(99, i);
        i = lst.set(5, 55);
        Assert.assertEquals(55, i);
        i = lst.set(0, 100);
        Assert.assertEquals(100, i);
        System.out.println(lst.get(0));
        System.out.println(lst.get(5));
        System.out.println(lst.get(9));
        System.out.println("Now put worked. Size of map should be 10. Size of the map =" + lst.size());

        Iterator<Integer> iter = lst.iterator();
        try {
            while (iter.hasNext()) {
                i = iter.next();
                System.out.println("From ITerator = " + i);
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) iter).close();
        }

        ListIterator<Integer> lstIter = lst.listIterator();
        try {
            while (lstIter.hasNext()) {
                i = lstIter.next();
                System.out.println("From List Iterator = " + i);
                System.out.println("From List Iterator Next Index= " + lstIter.nextIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        lstIter = lst.listIterator(5);
        try {
            while (lstIter.hasNext()) {
                i = lstIter.next();
                System.out.println("From List Iterator = " + i);
                System.out.println("From List Iterator Next Index= " + lstIter.nextIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("---");
        lstIter = lst.listIterator(9);
        try {
            while (lstIter.hasPrevious()) {
                i = lstIter.previous();
                System.out.println("From List Iterator Previous= " + i);
                System.out.println("From List Iterator Previous Index= " + lstIter.previousIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("----------------------------------");
        lstIter = lst.listIterator();
        try {
            while (lstIter.hasNext()) {
                i = lstIter.next();
                System.out.println("Iterating Forward = " + i);
            }

        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("Now Serialize the List");
        File serFile = new File(System.getProperty("java.io.tmpdir") + "/x.ser");
        FileSerDeUtils.serializeToFile(lst, serFile);
        System.out.println("Now De-Serialize the List");
        lst = (TurboList<Integer>) FileSerDeUtils.deserializeFromFile(serFile);
        System.out.println("After De-Serialization " + lst);
        System.out.println("After De-Serialization Size of map should be 10. Size of the map =" + lst.size());
        printListCharacteristics(lst);
        System.out.println("Now calling lst.clear()");
        lst.clear();
        System.out.println("After clear list size should be 0 and =" + lst.size());
        lst.add(0);
        System.out.println("Just added a record and lst size =" + lst.size());
        System.out.println("Finally Destroying");
        lst.destroy();

        System.out.println("Cleanup serialized file");
        FileUtils.deleteQuietly(serFile);

    } catch (Exception ex) {
        throw Throwables.propagate(ex);
    }

}

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From source file:Heuristics.TermLevelHeuristics.java

public boolean isQuestionMarkAtEndOfStatus(String status) {
    List<String> terms = new ArrayList();
    Collections.addAll(terms, status.split(" "));
    StringBuilder sb = new StringBuilder();
    boolean cleanEnd = false;
    ListIterator<String> termsIterator = terms.listIterator(terms.size());
    while (termsIterator.hasPrevious() & !cleanEnd) {
        String string = termsIterator.previous();
        if (!cleanEnd && (string.contains("/") || string.startsWith("#") || string.startsWith("@")
                || string.equals("\\|") || string.equals("") || string.contains("via")
                || string.equals("..."))) {
            continue;
        } else {/*from w ww.  j  a  v a 2s. com*/
            cleanEnd = true;
        }
        sb.insert(0, string);
    }
    status = sb.toString().trim();
    if (status.length() == 0) {
        return false;
    } else {
        return ("?".equals(String.valueOf(status.charAt(status.length() - 1)))) ? true : false;
    }
}

---

From source file:com.neatresults.mgnltweaks.ui.field.ComponentTemplateSelectFieldFactory.java

private Map<String, TemplateDefinition> getAreaHierarchy(Node parentArea)
        throws RepositoryException, RegistrationException {
    Map<String, TemplateDefinition> areaHierarchy = new LinkedHashMap<String, TemplateDefinition>();
    List<String> areaNamesHierarchy = new ArrayList<String>();
    Node parentParentArea = parentArea;
    while (parentParentArea != null) {
        String areaName = parentParentArea.getName();
        areaNamesHierarchy.add(areaName);
        parentParentArea = NodeUtil.getNearestAncestorOfType(parentParentArea, NodeTypes.Area.NAME);
    }/*from  ww w.j  av a  2 s .  com*/

    Node parentPage = NodeUtil.getNearestAncestorOfType(parentArea, NodeTypes.Page.NAME);
    templateId = parentPage.getProperty(NodeTypes.Renderable.TEMPLATE).getString();
    TemplateDefinition templateDef = registry.getTemplateDefinition(templateId);

    templateDef = mergeDefinition(templateDef);

    ListIterator<String> iter = areaNamesHierarchy.listIterator(areaNamesHierarchy.size());
    Node componentOrArea = parentPage;
    while (iter.hasPrevious()) {
        String name = iter.previous();
        // subnode component is typically indication of having area type single
        if (!componentOrArea.hasNode(name)
                && (componentOrArea.hasNode("component") || (templateDef instanceof AreaDefinition
                        && "single".equals(((AreaDefinition) templateDef).getType())))) {
            componentOrArea = componentOrArea.getNode("component/" + name);
            // so we know component is single, and we neeed to look if it has any sub areas
            String id = componentOrArea.getParent().getProperty(NodeTypes.Renderable.TEMPLATE).getString();
            TemplateDefinition componentDef = registry.getTemplateDefinition(id);
            if (componentDef != null) {
                templateDef = componentDef;
            }
        } else {
            componentOrArea = componentOrArea.getNode(name);
        }
        // do we really need to merge here already?
        AreaDefinition area = templateDef.getAreas().get(name);
        if (area != null) {
            AreaDefinition areaDef = (AreaDefinition) mergeDefinition(area);
            templateDef = areaDef;
        } else {
            AreaDefinition maybeHit = templateDef.getAreas().get(name);
            if (maybeHit != null) {
                areaHierarchy.put(name, maybeHit);
                templateDef = maybeHit;
            } else {
                // get subareas of the area? what the hack was i thinking when writing this? How does it work anyway?
                for (Entry<String, AreaDefinition> tempAreaEntry : templateDef.getAreas().entrySet()) {
                    AreaDefinition tempArea = tempAreaEntry.getValue();
                    maybeHit = tempArea.getAreas().get(name);
                    if (maybeHit != null) {
                        areaHierarchy.put(tempAreaEntry.getKey(), tempAreaEntry.getValue());
                        templateDef = maybeHit;
                    }
                }
            }
            // noComponent area ... how do i read those?
        }
        areaHierarchy.put(name, templateDef);
    }

    return areaHierarchy;
}

---

From source file:org.apache.cayenne.unit.di.server.SchemaBuilder.java

private void dropSchema(DataNode node, DataMap map) throws Exception {

    List<DbEntity> list = dbEntitiesInInsertOrder(node, map);

    try (Connection conn = dataSourceFactory.getSharedDataSource().getConnection();) {

        DatabaseMetaData md = conn.getMetaData();
        List<String> allTables = new ArrayList<String>();

        try (ResultSet tables = md.getTables(null, null, "%", null)) {
            while (tables.next()) {
                // 'toUpperCase' is needed since most databases
                // are case insensitive, and some will convert names to
                // lower
                // case
                // (PostgreSQL)
                String name = tables.getString("TABLE_NAME");
                if (name != null)
                    allTables.add(name.toUpperCase());
            }//from   w  w  w.jav a  2 s.  com
        }

        unitDbAdapter.willDropTables(conn, map, allTables);

        // drop all tables in the map
        try (Statement stmt = conn.createStatement();) {

            ListIterator<DbEntity> it = list.listIterator(list.size());
            while (it.hasPrevious()) {
                DbEntity ent = it.previous();
                if (!allTables.contains(ent.getName().toUpperCase())) {
                    continue;
                }

                for (String dropSql : node.getAdapter().dropTableStatements(ent)) {
                    try {
                        logger.info(dropSql);
                        stmt.execute(dropSql);
                    } catch (SQLException sqe) {
                        logger.warn("Can't drop table " + ent.getName() + ", ignoring...", sqe);
                    }
                }
            }
        }

        unitDbAdapter.droppedTables(conn, map);
    }
}

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From source file:org.cipango.callflow.JmxMessageLog.java

public void setMaxMessages(int maxMessages) {
    if (maxMessages <= 0)
        throw new IllegalArgumentException("Max message must be greater than 0");
    synchronized (this) {
        if (isRunning() && maxMessages != _maxMessages) {
            MessageInfo[] messages = new MessageInfo[maxMessages];
            ListIterator<MessageInfo> it = iterate(false);
            int index = maxMessages;
            while (it.hasPrevious()) {
                messages[--index] = it.previous();
                if (index == 0)
                    break;
            }//w ww. j  ava  2  s. c  o m
            _cursor = 0;
            _messages = messages;
        }
        _maxMessages = maxMessages;
    }
}

---

From source file:samples.com.axiomine.largecollections.util.WritableListSample.java

public static void workOnWritableList(WritableList<IntWritable> lst) {
    try {/*from   w  w w . ja  va 2 s.  com*/
        ListIterator<Writable> it = lst.listIterator();

        for (int i = 0; i < 10; i++) {
            boolean b = lst.add(new IntWritable(i));
            Assert.assertEquals(true, true);
        }
        System.out.println("Size of map=" + lst.size());
        System.out.println("Value for key 0=" + lst.get(0));
        ;
        System.out.println("Now remove key 0");
        try {
            //int i = lst.remove(0);
            Writable w = lst.remove(0);
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }

        int i = ((IntWritable) lst.remove(9)).get();
        System.out.println("Value for deleted key=" + i);
        ;
        System.out.println("Size of map=" + lst.size());

        lst.close();
        boolean b = false;
        try {
            lst.add(new IntWritable(9));
        } catch (Exception ex) {
            System.out.println("Exception because acces after close");
            b = true;
        }
        lst.open();
        System.out.println("Open again");
        b = lst.add(new IntWritable(9));

        Assert.assertEquals(true, b);
        i = ((IntWritable) lst.set(9, new IntWritable(99))).get();
        Assert.assertEquals(99, i);
        i = ((IntWritable) lst.set(5, new IntWritable(55))).get();
        Assert.assertEquals(55, i);
        i = ((IntWritable) lst.set(0, new IntWritable(100))).get();
        Assert.assertEquals(100, i);
        System.out.println(lst.get(0));
        System.out.println(lst.get(5));
        System.out.println(lst.get(9));
        System.out.println("Now put worked. Size of map should be 10. Size of the map =" + lst.size());

        Iterator<Writable> iter = lst.iterator();
        try {
            while (iter.hasNext()) {
                i = ((IntWritable) iter.next()).get();
                System.out.println("From ITerator = " + i);
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) iter).close();
        }

        ListIterator<Writable> lstIter = lst.listIterator();
        try {
            while (lstIter.hasNext()) {
                i = ((IntWritable) lstIter.next()).get();
                System.out.println("From List Iterator = " + i);
                System.out.println("From List Iterator Next Index= " + lstIter.nextIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        lstIter = lst.listIterator(5);
        try {
            while (lstIter.hasNext()) {
                i = ((IntWritable) lstIter.next()).get();
                System.out.println("From List Iterator = " + i);
                System.out.println("From List Iterator Next Index= " + lstIter.nextIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("---");
        lstIter = lst.listIterator(9);
        try {
            while (lstIter.hasPrevious()) {
                i = ((IntWritable) lstIter.next()).get();
                System.out.println("From List Iterator Previous= " + i);
                System.out.println("From List Iterator Previous Index= " + lstIter.previousIndex());
            }
        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("----------------------------------");
        lstIter = lst.listIterator();
        try {
            while (lstIter.hasNext()) {
                i = ((IntWritable) lstIter.next()).get();
                System.out.println("Iterating Forward = " + i);
            }

        } finally {
            //Always close and iterator after use. Otherwise you will not be able to call the clear function
            ((Closeable) lstIter).close();
        }

        System.out.println("Now Serialize the List");
        File serFile = new File(System.getProperty("java.io.tmpdir") + "/x.ser");
        FileSerDeUtils.serializeToFile(lst, serFile);
        System.out.println("Now De-Serialize the List");
        lst = (WritableList<IntWritable>) FileSerDeUtils.deserializeFromFile(serFile);
        System.out.println("After De-Serialization " + lst);
        System.out.println("After De-Serialization Size of map should be 10. Size of the map =" + lst.size());
        printListCharacteristics(lst);
        System.out.println("Now calling lst.clear()");
        lst.clear();
        System.out.println("After clear list size should be 0 and =" + lst.size());
        lst.add(new IntWritable(0));
        System.out.println("Just added a record and lst size =" + lst.size());
        System.out.println("Finally Destroying");
        lst.destroy();

        System.out.println("Cleanup serialized file");
        FileUtils.deleteQuietly(serFile);

    } catch (Exception ex) {
        throw Throwables.propagate(ex);
    }

}

---

From source file:org.apache.stratos.autoscaler.service.util.IaasContext.java

/**
 * This will return the node id of the node which is belong to the
 * requesting domain, sub domain and which is the most recently created. If it cannot find a
 * matching node id, this will return <code>null</code>.
 * @param domain service domain.//from ww w.  j a va 2  s  . c o  m
 * @param subDomain service sub domain. 
 * @return the node Id of the node
 */
public String getLastMatchingNode(String domain, String subDomain) {

    InstanceContext ctx = getInstanceContext(domain, subDomain);

    if (ctx == null) {
        return null;
    }

    // iterate in reverse order
    ListIterator<String> iter = new ArrayList<String>(ctx.getNodeIdToIpMap().keySet())
            .listIterator(ctx.getNodeIdToIpMap().size());

    if (iter.hasPrevious()) {
        return iter.previous();
    }

    return null;
}

---

From source file:com.numenta.taurus.instance.InstanceDetailPageFragment.java

void updateServerHeader() {
    if (_chartData == null) {
        return;//  w  ww  . j  a  v a  2s .  c o m
    }
    if (_instanceChartFrag == null) {
        return;
    }

    // Update server header
    _instanceChartFrag.setChartData(_chartData);

    // Update time slider
    Date endDate = _chartData.getEndDate();
    long endTime;
    if (endDate == null) {
        endTime = System.currentTimeMillis();
    } else {
        endTime = endDate.getTime();
    }
    _timeView.setAggregation(_chartData.getAggregation());
    _timeView.setEndDate(endTime);

    // Check if need to collapse to market hours
    if (_collapseAfterHours) {
        EnumSet<MetricType> anomalousMetrics = _chartData.getAnomalousMetrics();
        if (anomalousMetrics.contains(MetricType.TwitterVolume)) {
            // Collapse to market hours if twitter anomalies occurred during market hours
            MarketCalendar marketCalendar = TaurusApplication.getMarketCalendar();
            boolean collapsed = true;

            // Check if is there any twitter anomaly on the last visible bars
            List<Pair<Long, Float>> data = _chartData.getData();
            ListIterator<Pair<Long, Float>> iterator = data.listIterator(data.size());
            for (int i = 0; i < TaurusApplication.getTotalBarsOnChart() && iterator.hasPrevious(); i++) {
                Pair<Long, Float> value = iterator.previous();
                if (value != null && value.second != null && !Float.isNaN(value.second)) {
                    double scaled = DataUtils.logScale(value.second);
                    if (scaled >= TaurusApplication.getYellowBarFloor()
                            && !marketCalendar.isOpen(value.first)) {
                        // Found anomaly, don't collapse
                        collapsed = false;
                        break;
                    }
                }
            }
            _marketHoursCheckbox.setChecked(collapsed);
        } else {
            // Collapse to market hours if we only have stock anomalies
            _marketHoursCheckbox.setChecked(true);
        }
        // Prevent collapsing during scroll
        _collapseAfterHours = false;
    }
}

---

From source file:org.flowable.cmmn.converter.ConversionHelper.java

public void addExitCriteriaToCurrentElement(Criterion exitCriterion) {
    addExitCriterion(exitCriterion);//w ww.  j  a  v  a  2s  .c om

    ListIterator<CmmnElement> iterator = currentCmmnElements.listIterator(currentCmmnElements.size());
    HasExitCriteria hasExitCriteria = null;
    while (hasExitCriteria == null && iterator.hasPrevious()) {
        CmmnElement cmmnElement = iterator.previous();
        if (cmmnElement instanceof HasExitCriteria) {
            hasExitCriteria = (HasExitCriteria) cmmnElement;
        }
    }

    if (hasExitCriteria == null) {
        hasExitCriteria = getCurrentCase().getPlanModel();
    }

    if (StringUtils.isEmpty(exitCriterion.getId())) {
        // An id is expected by the evaluation algorithm, so setting an internal one if there isn't one
        exitCriterion.setId("exitCriterion_" + (hasExitCriteria.getExitCriteria().size() + 1));
    }

    exitCriterion.setAttachedToRefId(hasExitCriteria.getId());
    hasExitCriteria.getExitCriteria().add(exitCriterion);
}

---

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