Example usage for org.apache.commons.collections IteratorUtils filteredIterator

Introduction

In this page you can find the example usage for org.apache.commons.collections IteratorUtils filteredIterator.

Prototype

public static Iterator filteredIterator(Iterator iterator, Predicate predicate) 

Source Link

Document

Gets an iterator that filters another iterator.

Usage

From source file:com.github.liyp.test.TestMain.java

@SuppressWarnings("unchecked")
public static void main(String[] args) {
    // add a shutdown hook to stop the server
    Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
        @Override// w  w  w .  j  a v  a2  s.co  m
        public void run() {
            System.out.println("########### shoutdown begin....");
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("########### shoutdown end....");
        }
    }));

    System.out.println(args.length);
    Iterator<String> iterator1 = IteratorUtils
            .arrayIterator(new String[] { "one", "two", "three", "11", "22", "AB" });
    Iterator<String> iterator2 = IteratorUtils.arrayIterator(new String[] { "a", "b", "c", "33", "ab", "aB" });

    Iterator<String> chainedIter = IteratorUtils.chainedIterator(iterator1, iterator2);

    System.out.println("==================");

    Iterator<String> iter = IteratorUtils.filteredIterator(chainedIter, new Predicate() {
        @Override
        public boolean evaluate(Object arg0) {
            System.out.println("xx:" + arg0.toString());
            String str = (String) arg0;
            return str.matches("([a-z]|[A-Z]){2}");
        }
    });
    while (iter.hasNext()) {
        System.out.println(iter.next());
    }

    System.out.println("===================");

    System.out.println("asas".matches("[a-z]{4}"));

    System.out.println("Y".equals(null));

    System.out.println(String.format("%02d", 1000L));

    System.out.println(ArrayUtils.toString(splitAndTrim(" 11, 21,12 ,", ",")));

    System.out.println(new ArrayList<String>().toString());

    JSONObject json = new JSONObject("{\"keynull\":null}");
    json.put("bool", false);
    json.put("keya", "as");
    json.put("key2", 2212222222222222222L);
    System.out.println(json);
    System.out.println(json.get("keynull").equals(null));

    String a = String.format("{\"id\":%d,\"method\":\"testCrossSync\"," + "\"circle\":%d},\"isEnd\":true", 1,
            1);
    System.out.println(a.getBytes().length);

    System.out.println(new String[] { "a", "b" });

    System.out.println(new JSONArray("[\"aa\",\"\"]"));

    String data = String.format("%9d %s", 1, RandomStringUtils.randomAlphanumeric(10));
    System.out.println(data.getBytes().length);

    System.out.println(ArrayUtils.toString("1|2| 3|  333||| 3".split("\\|")));

    JSONObject j1 = new JSONObject("{\"a\":\"11111\"}");
    JSONObject j2 = new JSONObject(j1.toString());
    j2.put("b", "22222");
    System.out.println(j1 + " | " + j2);

    System.out.println("======================");

    String regex = "\\d+(\\-\\d+){2} \\d+(:\\d+){2}";
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher("2015-12-28 15:46:14  _NC250_MD:motion de\n");
    String eventDate = matcher.find() ? matcher.group() : "";

    System.out.println(eventDate);
}

---

From source file:com.amalto.core.storage.hibernate.InstanceScrollOptimization.java

@Override
public StorageResults visit(Select select) {
    ComplexTypeMetadata mainType = select.getTypes().get(0);
    Paging paging = select.getPaging();//from  w ww . j  a va 2  s. c  om
    int start = paging.getStart();
    if (start != 0) {
        throw new IllegalStateException(
                "This optimization is only use for iterating over all instances (start is not supported).");
    }
    if (paging.getLimit() != Integer.MAX_VALUE) {
        // Optimization *could* work when page size is set... however it also means the analysis of the query is
        // redirecting to the wrong optimization, and this is an issue.
        throw new UnsupportedOperationException();
    }
    // Perform same query as input *but* adds an order by clause 'by id' that allows efficient filtering (iterator
    // should
    // only return unique results).
    Select copy = select.copy();
    Collection<FieldMetadata> keyFields = mainType.getKeyFields();
    for (FieldMetadata keyField : keyFields) {
        copy.addOrderBy(new OrderBy(new Field(keyField), OrderBy.Direction.ASC));
    }
    Criteria criteria = createCriteria(copy); // Perform the query with order by id.
    // Create the filtered result iterator
    CloseableIterator<DataRecord> nonFilteredIterator = new ScrollableIterator(mappings, storageClassLoader,
            criteria.scroll(), callbacks);
    Predicate isUniqueFilter = new UniquePredicate(); // Unique filter returns only different instances
    Iterator filteredIterator = IteratorUtils.filteredIterator(nonFilteredIterator, isUniqueFilter);
    FilteredIteratorWrapper uniqueIterator = new FilteredIteratorWrapper(nonFilteredIterator, filteredIterator,
            select);
    return new HibernateStorageResults(storage, select, uniqueIterator);
}

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From source file:gr.omadak.leviathan.asp.objects.GenericClass.java

public Iterator getProperties() {
    return members == null ? IteratorUtils.EMPTY_ITERATOR
            : IteratorUtils.filteredIterator(members.values().iterator(), new Predicate() {
                public boolean evaluate(Object obj) {
                    return obj instanceof Property;
                }//from w w  w . j a  v a2 s  .c o m
            });
}

---

From source file:gr.omadak.leviathan.asp.objects.GenericClass.java

public Iterator getMethods() {
    return members == null ? IteratorUtils.EMPTY_ITERATOR
            : IteratorUtils.filteredIterator(members.values().iterator(), new Predicate() {
                public boolean evaluate(Object obj) {
                    return obj instanceof Method;
                }//ww  w .ja  va  2s. co m
            });
}

---

From source file:gov.nih.nci.caarray.util.owlparser.AbstractOntologyOwlParser.java

@SuppressWarnings("unchecked")
private void handle(Element rootElement) throws ParseException {
    try {//ww w.ja va 2s. co  m
        startProcessing();
        if (url == null) {
            url = rootElement.attributeValue(getBaseAttributeName());
        }
        handleOntologyDescription(rootElement.element(getOntologyElementName()));
        List<Element> classElements = rootElement.elements(getClassElementName());
        // two passes: one to create categories, one to resolve subclassing references
        handleClasses(classElements.iterator());
        handleSubclasses(classElements.iterator());
        List<Element> allElements = rootElement.elements();
        Iterator<Element> individualElements = IteratorUtils.filteredIterator(allElements.iterator(),
                IndividualElementPredicate.INSTANCE);
        handleIndividuals(individualElements);
    } finally {
        finishProcessing();
    }
}

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From source file:com.projity.grouping.core.transform.filtering.NodeFilter.java

public Iterator filteredIterator(Iterator i) {
    return IteratorUtils.filteredIterator(i, this);
}

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From source file:io.wcm.config.core.persistence.impl.ToolsConfigPagePersistenceProvider.java

@SuppressWarnings("unchecked")
private Iterator<Resource> getResourceInheritanceChainInternal(final String configName,
        final Iterator<String> paths, final ResourceResolver resourceResolver) {

    // find all matching items among all configured paths
    Iterator<Resource> matchingResources = IteratorUtils.transformedIterator(paths, new Transformer() {
        @Override//from   ww  w  .j  av a2 s. c om
        public Object transform(Object input) {
            String configPath = buildResourcePath((String) input, configName);
            Resource resource = resourceResolver.getResource(configPath);
            if (resource != null) {
                log.trace("+ Found matching config resource for inheritance chain: {}", configPath);
            } else {
                log.trace("- No matching config resource for inheritance chain: {}", configPath);
            }
            return resource;
        }
    });
    Iterator<Resource> result = IteratorUtils.filteredIterator(matchingResources,
            PredicateUtils.notNullPredicate());
    if (result.hasNext()) {
        return result;
    } else {
        return null;
    }
}

---

From source file:gr.omadak.leviathan.asp.objects.JsUserDefinedMethod.java

public Iterator getLocalFunctions() {
    return localFunctions == null ? IteratorUtils.EMPTY_ITERATOR
            : IteratorUtils.filteredIterator(localFunctions.iterator(), new Predicate() {
                public boolean evaluate(Object ob) {
                    JsUserDefinedMethod method = (JsUserDefinedMethod) ob;
                    return method.definedAsVar && !method.definedInVar;
                }/*from w  ww .j a v  a2  s  .c om*/
            });
}

---

From source file:io.wcm.caconfig.extensions.persistence.impl.ToolsConfigPagePersistenceStrategy.java

@SuppressWarnings("unchecked")
private Iterator<Resource> getResourceInheritanceChainInternal(final Collection<String> bucketNames,
        final String configName, final Iterator<String> paths, final ResourceResolver resourceResolver) {

    // find all matching items among all configured paths
    Iterator<Resource> matchingResources = IteratorUtils.transformedIterator(paths, new Transformer() {

        @Override/*from   w w w .j a  v  a  2s.c  o m*/
        public Object transform(Object input) {
            String path = (String) input;
            for (String bucketName : bucketNames) {
                final String name = bucketName + "/" + configName;
                final String configPath = buildResourcePath(path, name);
                Resource resource = resourceResolver.getResource(configPath);
                if (resource != null) {
                    log.trace("+ Found matching config resource for inheritance chain: {}", configPath);
                    return resource;
                } else {
                    log.trace("- No matching config resource for inheritance chain: {}", configPath);
                }
            }
            return null;
        }
    });
    Iterator<Resource> result = IteratorUtils.filteredIterator(matchingResources,
            PredicateUtils.notNullPredicate());
    if (result.hasNext()) {
        return result;
    }
    return null;
}

---

From source file:nl.strohalm.cyclos.controls.reports.members.transactions.ExportMembersTransactionsDetailsToCsvAction.java

@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
protected List<?> executeQuery(final ActionContext context) {
    final MembersReportHandler reportHandler = getReportHandler();
    final Pair<MembersTransactionsReportDTO, Iterator<MemberTransactionDetailsReportData>> pair = reportHandler
            .handleTransactionsDetails(context);
    final MembersTransactionsReportDTO dto = pair.getFirst();
    final Iterator<MemberTransactionDetailsReportData> reportIterator = pair.getSecond();
    final Iterator iterator = IteratorUtils.filteredIterator(reportIterator, new Predicate() {
        @Override//  ww  w  .  j  av  a  2  s.  c o  m
        public boolean evaluate(final Object element) {
            final MemberTransactionDetailsReportData data = (MemberTransactionDetailsReportData) element;
            if (dto.isIncludeNoTraders()) {
                return true;
            }
            return data.getAmount() != null;
        }
    });
    return new IteratorListImpl(iterator);
}

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