Liferay Ad integration

http://www.liferay.com/community/wiki/-/wiki/Main/LDAP+with+AD+in+Liferay+6.0.5

Windows Mobile

http://msdn.microsoft.com/en-us/windowsmobile/bb264318.aspx

Alfresco

http://www.alfresco.com/

Android Tutorial

http://developer.android.com/training/basics/firstapp/index.html

Objective-C

http://en.wikipedia.org/wiki/Objective-C

XML

XPL http://www.w3.org/Submission/xpl/

Exist DB http://exist-db.org/exist/index.xml

XPath  http://www.w3.org/TR/xpath20/

Xquery  http://www.w3.org/TR/xquery/

XSLT   http://www.w3.org/TR/xslt

Orbeon Xforms

http://www.orbeon.com/

Installsield

http://www.flexerasoftware.com/products/installshield.htm

Install4j

http://www.ej-technologies.com/products/install4j/overview.html

Working with alloyui events and elements

http://www.liferay.com/web/nathan.cavanaugh/blog/-/blogs/alloyui-working-with-elements-and-events

Alloy UI Loading Mask

AlloyUI Loading mask

if (A.one('#wrapper').loadingmask == null)
            A.one('#wrapper').plug(A.LoadingMask, { background: '#000' });
        A.one('#wrapper').loadingmask.toggle();

Changing Datatype in liferay service layer

your-portlet\docroot\WEB-INF\classes\META-INF
portlet-model-hints.xml

<model-hints>
    <model name="com.abc.portal.community.database.model.TwitterAccount">
        <field name="accountId" type="long" />
        <field name="twitterUserId" type="long" />
        <field name="imageUrl" type="String">
            <hint-collection name="TEXTAREA" />
        </field>
        <field name="twitterScreenName" type="String" />
        <field name="createDate" type="Date" />
        <field name="modifiedDate" type="Date" />
        <field name="lastStatusId" type="long" />
    </model>
    <model name="com.abc.portal.community.database.model.TwitterFeed">
        <field name="feedId" type="long" />
        <field name="accountId" type="long" />
        <field name="feedMessage" type="String">
            <hint-collection name="TEXTAREA" />
        </field>
        <field name="createDate" type="Date" />
    </model>
</model-hints>

Display Twitter feeds in liferay

In this post im going how to fetch twitter feeds in liferay portlet.
Add Message Listener in liferay port let.xml
<scheduler-entry>
            <scheduler-event-listener-class>com.abc.portal.community.messaging.SynchronizeTwitterMessageListener</scheduler-event-listener-class>
            <trigger>
                <simple>
                    <property-key>twitter.synchronization.interval</property-key>
                    <time-unit>minute</time-unit>
                </simple>
            </trigger>
        </scheduler-entry>

In Scheduler class
com.abc.portal.community.messaging.SynchronizeTwitterMessageListener

public class SynchronizeTwitterMessageListener implements MessageListener {

    @Override
    public void receive(Message message) throws MessageListenerException {
        try {
            doReceive(message);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
       
    }
    protected void doReceive(Message message) throws Exception {
       
        TwitterFeedLocalServiceUtil.updateFeeds();
        _log.info(" =========  Successfully called SynchronizeTwitterMessageListener =========");
    }

    private static Log _log = LogFactoryUtil.getLog(
        SynchronizeTwitterMessageListener.class);
}


protected void updateFeed(String twitterurl) throws PortalException,
            SystemException {

        String twitterScreenName = twitterurl;

        Date now = new Date();
        if (Validator.isNull(twitterScreenName)) {
            throw new FeedTwitterScreenNameException();
        }

        TwitterAccount twitterAccount = twitterAccountPersistence
                .fetchByTwitterScreenName(twitterScreenName);

        JSONArray jsonArray = null;
        String ImageURL = null;

        if (twitterAccount == null) {
            jsonArray = getUserTimelineJSONArray(twitterScreenName, 0);

            long feedId = counterLocalService.increment();

            twitterAccount = twitterAccountPersistence.create(feedId);

            twitterAccount.setTwitterScreenName(twitterScreenName);
            twitterAccount.setCreateDate(now);
            twitterAccount.setModifiedDate(now);

            twitterAccountPersistence.update(twitterAccount, false);

            if (jsonArray == null) {

                return;
            }

        }

        if (jsonArray == null) {

            jsonArray = getUserTimelineJSONArray(twitterScreenName,
                    twitterAccount.getLastStatusId());

        }

        if ((jsonArray == null) || (jsonArray.length() == 0)) {
            return;
        }

        for (int i = 0; i < jsonArray.length(); i++) {

            JSONObject statusJSON = jsonArray.getJSONObject(i);

            SimpleDateFormat sdf = new SimpleDateFormat(
                    "EEE MMM d hh:mm:ss Z yyyy");

            Date createDate = null;

            try {
                createDate = sdf.parse(statusJSON.getString("created_at"));

            } catch (ParseException pe) {
                throw new SystemException(pe);
            }

            long statusId = statusJSON.getLong("id");
            String text = statusJSON.getString("text");
            JSONObject userJSON = statusJSON.getJSONObject("user");
            ImageURL = userJSON.getString("profile_image_url");

            if (twitterAccount.getTwitterUserId() <= 0) {
                userJSON = statusJSON.getJSONObject("user");

                twitterAccount.setTwitterUserId(userJSON.getLong("id"));
                ImageURL = userJSON.getString("profile_image_url");
                twitterAccount.setImageUrl(ImageURL);

            }

            if (twitterAccount.getLastStatusId() < statusId) {
                twitterAccount.setLastStatusId(statusId);
                twitterAccount.setImageUrl(ImageURL);
                twitterAccountPersistence.update(twitterAccount, false);
            }

            JSONObject extraData = JSONFactoryUtil.createJSONObject();

            extraData.put("text", text);

            TwitterFeed twitterFeed = TwitterFeedLocalServiceUtil
                    .createTwitterFeed(CounterLocalServiceUtil
                            .increment(TwitterFeed.class.getName()));
            twitterFeed.setAccountId(twitterAccount.getAccountId());
            twitterFeed.setCreateDate(createDate);
            System.out.println("text===============" + text);
            twitterFeed.setFeedMessage(text);
            Date today = new Date();
            Calendar cal = new GregorianCalendar();
            cal.setTime(today);
            cal.add(Calendar.DAY_OF_MONTH, -30);

            SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

            Date thirtydaysold = null;

            try {
                String date = sdfd.format(cal.getTime());
                createDate = sdfd.parse(date);
            } catch (ParseException pe) {
            }

            /*
             * List<TwitterFeed> twitterFeedsold = TwitterFeedLocalServiceUtil
             * .getOldTwitterFeeds(twitterAccount.getAccountId(),
             * thirtydaysold);
             * TwitterFeedLocalServiceUtil.deleteoldfeeds(twitterFeedsold);
             */

            /*
             * SocialActivityLocalServiceUtil.addActivity( user.getUserId(), 0,
             * createDate, Feed.class.getName(), statusId,
             * TwitterActivityKeys.ADD_STATUS, extraData.toString(), 0);
             */

            TwitterFeedLocalServiceUtil.addTwitterFeed(twitterFeed);

            // System.out.println("\n\n\n\n\ntwitterFeed>>>>>>>>" + twitterFeed
            // +"\n\n\n\n\n");
        }

        twitterAccount.setModifiedDate(now);

        twitterAccount.setImageUrl(ImageURL);

        twitterAccountPersistence.update(twitterAccount, false);
    }


protected JSONArray getUserTimelineJSONArray(String twitterScreenName,
            long sinceId) {

        // System.out.println("sinceId>>>#######################################################>>>>>>>>>>>"
        // + sinceId);
        try {
            String url = _URL + twitterScreenName + ".json";

            if (sinceId > 0) {
                url += "?since_id=" + sinceId;
            }

            return JSONFactoryUtil.createJSONArray(HttpUtil.URLtoString(url));
        } catch (Exception e) {
            if (_log.isWarnEnabled()) {
                _log.warn(e, e);
            }

            return null;
        }
    }

Remove portlet from page

To remove portlet from Page when portlet is empty.
renderRequest.setAttribute(WebKeys.PORTLET_CONFIGURATOR_VISIBILITY, Boolean.FALSE)

The JIT

The javascript framework that displays graphs 
http://thejit.org/

Another Java Portal

Another Java Portal    http://www.zkoss.org/  

it supports liferay portal server.