Example usage for org.apache.commons.collections ListUtils transformedList

Introduction

In this page you can find the example usage for org.apache.commons.collections ListUtils transformedList.

Prototype

public static List transformedList(List list, Transformer transformer) 

Source Link

Document

Returns a transformed list backed by the given list.

Usage

From source file:com.xpn.xwiki.plugin.watchlist.WatchListEventFeedManager.java

/**
 * @param user user to get the RSS feed for
 * @param entryNumber number of entries to retrieve
 * @param context the XWiki context//from w w  w .j  av  a2  s .c  o m
 * @return The watchlist RSS feed for the given user
 * @throws XWikiException if the retrieval of RSS entries fails
 */
@SuppressWarnings("unchecked")
public SyndFeed getFeed(String user, int entryNumber, XWikiContext context) throws XWikiException {
    List<String> wikis = plugin.getStore().getWatchedElements(user, WatchListStore.ElementType.WIKI, context);
    List<String> spaces = plugin.getStore().getWatchedElements(user, WatchListStore.ElementType.SPACE, context);
    List<String> documents = plugin.getStore().getWatchedElements(user, WatchListStore.ElementType.DOCUMENT,
            context);
    List<Object> parameters = new ArrayList<Object>();
    ActivityStreamPluginApi asApi = (ActivityStreamPluginApi) context.getWiki().getPluginApi("activitystream",
            context);

    parameters.addAll(wikis);
    parameters.addAll(spaces);
    parameters.addAll(documents);

    Transformer transformer = new ConstantTransformer("?");
    List<String> wikisPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    wikisPlaceholders.addAll(wikis);
    List<String> spacesPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    spacesPlaceholders.addAll(spaces);
    List<String> documentsPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    documentsPlaceholders.addAll(documents);

    String listItemsJoint = ",";
    String concatWiki = " or concat(act.wiki,'";
    String query = "1=0";
    if (!wikis.isEmpty()) {
        query += " or act.wiki in (" + StringUtils.join(wikisPlaceholders, listItemsJoint) + ')';
    }
    if (!spaces.isEmpty()) {
        query += concatWiki + WatchListStore.WIKI_SPACE_SEP + "',act.space) in ("
                + StringUtils.join(spacesPlaceholders, listItemsJoint) + ')';
    }
    if (!documents.isEmpty()) {
        query += concatWiki + WatchListStore.WIKI_SPACE_SEP + "',act.page) in ("
                + StringUtils.join(documentsPlaceholders, listItemsJoint) + ')';
    }
    List<ActivityEvent> events = asApi.searchEvents(query, false, true, entryNumber, 0, parameters);

    SyndFeed feed = asApi.getFeed(events);
    setFeedMetaData(feed, context);

    return feed;
}

---

From source file:org.xwiki.watchlist.internal.DefaultWatchListEventFeedManager.java

@Override
@SuppressWarnings("unchecked")
public SyndFeed getFeed(String user, int entryNumber) throws XWikiException {
    XWikiContext context = contextProvider.get();

    Collection<String> wikis = store.getWatchedElements(user, WatchedElementType.WIKI);
    Collection<String> spaces = store.getWatchedElements(user, WatchedElementType.SPACE);
    Collection<String> documents = store.getWatchedElements(user, WatchedElementType.DOCUMENT);
    List<Object> parameters = new ArrayList<Object>();
    ActivityStreamPluginApi asApi = (ActivityStreamPluginApi) context.getWiki().getPluginApi("activitystream",
            context);/*w  ww . j  a  v a  2 s.  co m*/

    parameters.addAll(wikis);
    parameters.addAll(spaces);
    parameters.addAll(documents);

    Transformer transformer = new ConstantTransformer("?");
    List<String> wikisPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    wikisPlaceholders.addAll(wikis);
    List<String> spacesPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    spacesPlaceholders.addAll(spaces);
    List<String> documentsPlaceholders = ListUtils.transformedList(new ArrayList<String>(), transformer);
    documentsPlaceholders.addAll(documents);

    String listItemsJoint = ",";
    String concatWiki = " or concat(act.wiki,'";
    String query = "1=0";
    if (!wikis.isEmpty()) {
        query += " or act.wiki in (" + StringUtils.join(wikisPlaceholders, listItemsJoint) + ')';
    }
    if (!spaces.isEmpty()) {
        query += concatWiki + DefaultWatchListStore.WIKI_SPACE_SEP + "',act.space) in ("
                + StringUtils.join(spacesPlaceholders, listItemsJoint) + ')';
    }
    if (!documents.isEmpty()) {
        query += concatWiki + DefaultWatchListStore.WIKI_SPACE_SEP + "',act.page) in ("
                + StringUtils.join(documentsPlaceholders, listItemsJoint) + ')';
    }
    List<ActivityEvent> events = asApi.searchEvents(query, false, true, entryNumber, 0, parameters);

    SyndFeed feed = asApi.getFeed(events);
    setFeedMetaData(feed, context);

    return feed;
}

---