Example usage for java.util Collection clear

Introduction

In this page you can find the example usage for java.util Collection clear.

Prototype

void clear();

Source Link

Document

Removes all of the elements from this collection (optional operation).

Usage

From source file:jp.ac.tokushima_u.is.ll.common.orm.hibernate.HibernateWebUtils.java

/**
 * ?ID?,???./*  w w  w .  j av a2 s.c  o  m*/
 * 
 * ??????id,??????id?????.
 * ???id??,??id??.
 * ?ID, ??cascade-save-or-update.
 * 
 * @param srcObjects ??,.
 * @param checkedIds  ?,ID.
 * @param clazz  ?
 * @param idName ??
 */
public static <T, ID> void mergeByCheckedIds(final Collection<T> srcObjects, final Collection<ID> checkedIds,
        final Class<T> clazz, final String idName) {

    //?
    Assert.notNull(srcObjects, "scrObjects?");
    Assert.hasText(idName, "idName?");
    Assert.notNull(clazz, "clazz?");

    //?,???.
    if (checkedIds == null) {
        srcObjects.clear();
        return;
    }

    //????,id?ID?,.
    //?,???id,?id???ID.
    Iterator<T> srcIterator = srcObjects.iterator();
    try {

        while (srcIterator.hasNext()) {
            T element = srcIterator.next();
            Object id;
            id = PropertyUtils.getProperty(element, idName);

            if (!checkedIds.contains(id)) {
                srcIterator.remove();
            } else {
                checkedIds.remove(id);
            }
        }

        //ID??id????,,id??.
        for (ID id : checkedIds) {
            T obj = clazz.newInstance();
            PropertyUtils.setProperty(obj, idName, id);
            srcObjects.add(obj);
        }
    } catch (Exception e) {
        throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
    }
}

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From source file:gov.nih.nci.caintegrator.common.PermissibleValueUtil.java

/**
 * Add new values to the permissibleValue collection.
 *
 * @param type the type of the abstractPermissibleValue
 * @param abstractPermissibleValues the PermissibleValue collection
 * @param addList the list of DisplayString to add
 *//*from ww w . j  av a2  s.  c o m*/
public static void addNewValue(String type, Collection<PermissibleValue> abstractPermissibleValues,
        List<String> addList) {
    if (addList == null) {
        return;
    }
    for (String displayString : addList) {
        try {
            addNewValue(type, abstractPermissibleValues, displayString);
        } catch (NumberFormatException e) {
            abstractPermissibleValues.clear();
            return;
        } catch (ParseException e) {
            abstractPermissibleValues.clear();
            return;
        }
    }
}

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From source file:com.afeng.common.dao.orm.HibernateWebUtils.java

/**
 * ?ID?,???.//from www.j ava  2  s .c  o m
 * <p/>
 * ??????id,??????id?????.
 * ???id??,??id??.
 * ?ID, ??cascade-save-or-update.
 *
 * @param srcObjects ??,.
 * @param checkedIds ?,ID.
 * @param clazz      ?
 * @param idName     ??
 */
public static <T, ID> void mergeByCheckedIds(final Collection<T> srcObjects, final Collection<ID> checkedIds,
        final Class<T> clazz, final String idName) {

    //?
    Assert.notNull(srcObjects, "scrObjects?");
    Assert.hasText(idName, "idName?");
    Assert.notNull(clazz, "clazz?");

    //?,???.
    if (checkedIds == null) {
        srcObjects.clear();
        return;
    }

    //????,id?ID?,.
    //?,???id,?id???id.
    Iterator<T> srcIterator = srcObjects.iterator();
    try {

        while (srcIterator.hasNext()) {
            T element = srcIterator.next();
            Object id;
            id = PropertyUtils.getProperty(element, idName);

            if (!checkedIds.contains(id)) {
                srcIterator.remove();
            } else {
                checkedIds.remove(id);
            }
        }

        //ID??id????,,id??.
        for (ID id : checkedIds) {
            T obj = clazz.newInstance();
            PropertyUtils.setProperty(obj, idName, id);
            srcObjects.add(obj);
        }
    } catch (Exception e) {
        throw ReflectionUtils.convertReflectionExceptionToUnchecked(e);
    }
}

---

From source file:mitm.common.mail.BodyPartUtils.java

/**
 * Returns the plain text body of the message and it's attachments. The attachments collection is cleared before use.
 *///w  w w .ja  v a  2s  .  c o m
public static String getPlainBodyAndAttachments(final MimeMessage message, Collection<Part> attachments)
        throws MessagingException, IOException {
    String body = null;

    for (int maxLevel = 1; maxLevel <= 2; maxLevel++) {
        if (attachments != null) {
            attachments.clear();
        }

        body = getPlainBodyAndAttachments(message, attachments, 0, maxLevel);

        if (body != null) {
            break;
        }
    }

    return body;
}

---

From source file:de.xwic.appkit.core.util.CollectionUtil.java

/**
 * @param where collection to clear and add to
 * @param fromWhere what to add//from   w  w  w. j  a  v a2 s .c  o  m
 * @throws NullPointerException if <code>where</code> is empty
 */
public static <E> void clearAndAddAll(final Collection<? super E> where,
        final Collection<? extends E> fromWhere) throws NullPointerException {
    if (where == fromWhere) {
        return;
    }
    where.clear();
    if (!isEmpty(fromWhere)) {
        where.addAll(fromWhere);
    }
}

---

From source file:org.apache.openejb.util.classloader.URLClassLoaderFirst.java

private static void list(final Collection<String> list, final String key) {
    list.clear();

    final String s = SystemInstance.get().getOptions().get(key, (String) null);
    if (s != null && !s.trim().isEmpty()) {
        list.addAll(Arrays.asList(s.trim().split(",")));
    }/*from   w  ww. ja va  2  s.  com*/
}

---

From source file:org.rhq.core.pc.drift.DriftDetector.java

static private void safeClear(Collection<?>... collections) {
    if (null == collections) {
        return;/*from   www . jav  a 2s .co m*/
    }
    for (Collection<?> c : collections) {
        if (null != c) {
            c.clear();
        }
    }
}

---

From source file:fr.gouv.culture.vitam.digest.DigestCompute.java

public static int createDigest(File src, File dst, File ftar, File fglobal, boolean oneDigestPerFile,
        String[] extensions, String mask, boolean prefix) {
    if (mask == null) {
        return createDigest(src, dst, ftar, fglobal, oneDigestPerFile, extensions);
    }/*from   w  w w. j  a va2s. c o  m*/
    try {
        if (prefix) {
            // fix mask
            List<File> filesToScan = new ArrayList<File>();
            File dirToSearch = src;
            if (!dirToSearch.isDirectory()) {
                if (dirToSearch.canRead() && dirToSearch.getName().startsWith(mask)) {
                    filesToScan.add(dirToSearch);
                } else {
                    throw new CommandExecutionException("Resources not found");
                }
            } else {
                Collection<File> temp = FileUtils.listFiles(dirToSearch, extensions,
                        StaticValues.config.argument.recursive);
                for (File file : temp) {
                    if (file.getName().startsWith(mask)) {
                        filesToScan.add(file);
                    }
                }
                temp.clear();
            }
            return createDigest(src, dst, ftar, fglobal, oneDigestPerFile, filesToScan);
        } else {
            // RegEx mask
            File dirToSearch = src;
            if (!dirToSearch.isDirectory()) {
                List<File> filesToScan = new ArrayList<File>();
                if (dirToSearch.canRead() && dirToSearch.getName().matches(mask + ".*")) {
                    filesToScan.add(dirToSearch);
                    String global = dirToSearch.getName().replaceAll("[^" + mask + "].*", "")
                            + "_all_digests.xml";
                    fglobal = new File(fglobal, global);
                } else {
                    throw new CommandExecutionException("Resources not found");
                }
                return createDigest(src, dst, ftar, fglobal, oneDigestPerFile, filesToScan);
            } else {
                HashMap<String, List<File>> hashmap = new HashMap<String, List<File>>();
                Collection<File> temp = FileUtils.listFiles(dirToSearch, extensions,
                        StaticValues.config.argument.recursive);
                List<File> filesToScan = null;
                Pattern pattern = Pattern.compile(mask + ".*");
                Pattern pattern2 = Pattern.compile(mask);
                for (File file : temp) {
                    String filename = file.getName();
                    Matcher matcher = pattern.matcher(filename);
                    if (matcher.matches()) {
                        String end = pattern2.matcher(filename).replaceFirst("");
                        int pos = filename.indexOf(end);
                        if (pos <= 0) {
                            System.err.println("Cannot find : " + end + " in " + filename);
                            continue;
                        }
                        String global = filename.substring(0, pos);
                        if (global.charAt(global.length() - 1) != '_') {
                            global += "_";
                        }
                        global += "all_digests.xml";
                        filesToScan = hashmap.get(global);
                        if (filesToScan == null) {
                            filesToScan = new ArrayList<File>();
                            hashmap.put(global, filesToScan);
                        }
                        filesToScan.add(file);
                    }
                }
                temp.clear();
                int res = 0;
                for (String global : hashmap.keySet()) {
                    File fglobalnew = new File(fglobal, global);
                    res += createDigest(src, dst, ftar, fglobalnew, oneDigestPerFile, hashmap.get(global));
                }
                hashmap.clear();
                return res;
            }
        }
    } catch (CommandExecutionException e1) {
        System.err.println(StaticValues.LBL.error_error.get() + " " + e1.toString());
        return -1;
    }
}

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From source file:org.toobsframework.data.beanutil.BeanMonkey.java

private static Object evaluatePropertyValue(String name, String className, String namespace, Object value,
        Map properties, Object bean)
        throws InvocationTargetException, IllegalAccessException, NoSuchMethodException, PermissionException {
    // Perform the assignment for this property
    if (className.startsWith(configuration.getProperty("toobs.beanmonkey.dataPackage"))) {
        className = className.substring(className.lastIndexOf(".") + 1);

        IObjectLoader odao = null;/*  www.  j av  a2s  .c o m*/
        ICollectionLoader cdao = null;
        Object daoObject = beanFactory.getBean(Introspector.decapitalize(className) + "Dao");
        if (daoObject == null) {
            throw new InvocationTargetException(new Exception(
                    "DAO class " + Introspector.decapitalize(className) + "Dao could not be loaded"));
        }
        if (daoObject instanceof IObjectLoader) {
            odao = (IObjectLoader) daoObject;
        } else {
            cdao = (ICollectionLoader) daoObject;
        }

        String guid = null;
        if (value != null && value.getClass().isArray()) {
            if (properties.containsKey(PlatformConstants.MULTI_ACTION_INSTANCE)) {
                Object[] oldValue = (Object[]) value;
                Integer instance = (Integer) properties.get(PlatformConstants.MULTI_ACTION_INSTANCE);
                if (oldValue.length >= instance + 1) {
                    guid = ((String[]) oldValue)[instance];
                } else {
                    throw new RuntimeException("Instance " + instance + " not found in " + oldValue + " for: "
                            + name + " class: " + className + " in: " + bean);
                }
            } else {
                guid = ((String[]) value)[0];
            }
        } else {
            guid = (String) value;
        }
        if (guid != null && guid.length() > 0) {
            String personId = (String) properties.get("personId");
            try {
                if (odao != null) {
                    value = odao.load(guid);
                } else {
                    value = cdao.load(Integer.parseInt(guid));
                }
            } catch (PermissionException pe) {
                log.error("PermissionException loading object " + className + "." + name + " with guid " + guid
                        + " by person " + personId);
                throw pe;
            } finally {
            }
        } else {
            value = null;
        }
    } else if ((className.equals("java.util.ArrayList") || className.equals("java.util.List"))
            && !(value instanceof java.util.List)) {
        Object[] values = null;
        if (value != null && value.getClass().isArray()) {
            values = ((Object[]) value);
        } else {
            values = new Object[1];
            values[0] = (Object) value;
        }
        value = new ArrayList();
        for (int aa = 0; aa < values.length; aa++) {
            if (!"".equals(values[aa]))
                ((ArrayList) value).add(values[aa]);
        }
        if (((ArrayList) value).size() == 0)
            value = null;
    } else if (className.equals("java.util.Collection")) {
        className = null;
        String typeProp = (namespace != null ? namespace : "") + name + "-Type";
        if (properties.get(typeProp) != null && properties.get(typeProp).getClass().isArray()) {
            className = ((String[]) properties.get(typeProp))[0];
        } else {
            className = (String) properties.get(typeProp);
        }

        if (className == null) {
            throw new InvocationTargetException(new Exception("Missing collection type for " + name));
        }

        IObjectLoader odao = null;
        ICollectionLoader cdao = null;
        Object daoObject = beanFactory.getBean(Introspector.decapitalize(className) + "Dao");
        if (daoObject == null) {
            throw new InvocationTargetException(new Exception(
                    "DAO class " + Introspector.decapitalize(className) + "Dao could not be loaded"));
        }
        if (daoObject instanceof IObjectLoader) {
            odao = (IObjectLoader) daoObject;
        } else {
            cdao = (ICollectionLoader) daoObject;
        }

        Object[] guids = null;
        if (value != null && value.getClass().isArray()) {
            guids = ((Object[]) value);
        } else if (value != null && value instanceof ArrayList) {
            guids = new Object[((ArrayList) value).size()];
            for (int i = 0; i < guids.length; i++) {
                guids[i] = (Object) ((ArrayList) value).get(i);
            }
        } else {
            guids = new Object[1];
            guids[0] = (Object) value;
        }

        String personId = (String) properties.get("personId");

        java.util.Collection valueList = (java.util.Collection) PropertyUtils.getProperty(bean, name);
        valueList.clear();

        for (int i = 0; i < guids.length; i++) {
            if (odao != null) {
                if (((String) guids[i]).length() == 0)
                    continue;
                value = odao.load((String) guids[i]);
            } else if (cdao != null) {
                value = cdao.load((Integer) guids[i]);
            }
            if (value != null) {
                valueList.add(value);
            } else {
                if (beanFactory.containsBean(className + "CollectionCreator")) {
                    ICollectionCreator collectionCreator = (ICollectionCreator) beanFactory
                            .getBean(className + "CollectionCreator");
                    try {
                        collectionCreator.addCollectionElements(guids[i], valueList, properties, personId,
                                namespace);
                    } catch (Exception e) {
                        throw new InvocationTargetException(e);
                    }
                }
            }
        }
        value = valueList;
    } else if (className.equals("java.lang.String") && value != null && value.getClass().isArray()
            && ((Object[]) value).length > 1
            && properties.containsKey(PlatformConstants.MULTI_ACTION_INSTANCE)) {
        Object[] oldValue = (Object[]) value;
        Integer instance = (Integer) properties.get(PlatformConstants.MULTI_ACTION_INSTANCE);
        if (oldValue.length >= instance + 1) {
            value = oldValue[instance];
        } else {
            throw new RuntimeException("Instance " + instance + " not found in " + oldValue + " for: " + name
                    + " class: " + className + " in: " + bean);
        }
    } else if (className.equals("java.lang.String") && value != null && value.getClass().isArray()
            && ((Object[]) value).length > 1) {
        Object[] oldValue = (Object[]) value;
        String newValue = new String();
        for (int i = 0; i < oldValue.length; i++) {
            if (i > 0) {
                newValue = newValue + ";";
            }
            newValue = newValue + oldValue[i];
        }
        value = newValue;
    } else if ((className.equals("java.lang.Integer") || className.equals("java.lang.Boolean"))
            && value != null) {
        if (value.getClass().isArray() && ((Object[]) value).length == 1 && ((Object[]) value)[0].equals("")) {
            value = null;
        } else if (!value.getClass().isArray() && String.valueOf(value).equals("")) {
            value = null;
        }
    } else if (className.equals("java.util.Date") && value != null) {
        if (value.getClass().isArray()) {
            value = StringToDateConverter.convert(value);
        }
    }

    return value;
}

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From source file:org.deri.iris.queryrewriting.RewritingUtils.java

public static Collection<IRule> unfold(final IRule reconciliationQuery,
        final Map<String, Set<IRule>> rewritingMap, final Set<IRule> cns) {

    final Collection<IRule> unfolded = new ArrayList<IRule>();
    unfolded.add(RenamingUtils.canonicalRenaming(reconciliationQuery, "U"));

    List<IRule> temp;/*from w  w  w .  j a v a 2s  .  c o  m*/
    for (final String key : rewritingMap.keySet()) {

        temp = ImmutableList.copyOf(unfolded);
        unfolded.clear();
        // get the corresponding expansions
        final Set<IRule> rewritings = rewritingMap.get(key);
        for (final IRule r : temp) {
            for (final ILiteral t : r.getBody()) {
                if (t.getAtom().getPredicate().getPredicateSymbol().equals(key)) {
                    // possible expansion
                    final Map<IVariable, ITerm> gamma = new LinkedHashMap<IVariable, ITerm>();
                    for (IRule exp : rewritings) {
                        exp = RenamingUtils.canonicalRenaming(exp, "V");
                        if (TermMatchingAndSubstitution.unify(t.getAtom(),
                                exp.getHead().iterator().next().getAtom(), gamma)) {
                            final IRule qPrime = RenamingUtils.canonicalRenaming(
                                    RewritingUtils.rewrite(r, t.getAtom(), exp.getBody(), gamma), "U");
                            unfolded.add(qPrime);
                        }
                    }
                }
            }
        }

    }
    return unfolded;
}

---

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