How to migrate existing data and configure to use image.hook.impl or dl.hook.impl in Liferay

Sometimes we have to change the File storage Location through HOOK IMPL to Database or File System.
In that scenario we also have to migrate existing data which is already stored through previous HOOK.

Here is the solution -

1) Go to Document library/image gallery,click Export/import option on the top of rightside of the portlet,
click 'export' button for export the content & save the lar.

2) Stop the server and add "image.hook.impl=com.liferay.portal.image.FileSystemHook" in portal-ext properties
& comment the "#image.hook.impl=com.liferay.portal.image.DatabaseHook" in portal-ext properties.

3) Clear the database cache from serverAdministration and delete work temp folders in tomcat.

4) Start the server, Go to Document library/image gallery and 'import' the lar file.

Please let me know if you have any questions.



Your are just done, Try & Enjoy the function.....:)

Add Hidden/Admin portlets in Add more Applications Menu (Liferay)

Most of the requirement from the client comes by saying that they want the same user portlet as available in Control Panel. This can be achieved by below details.

1) Create a hook name addUserToAddApplication.
2) Create structure WEB-INF/jsp/html/portlet/layout_configuration.
3) copy view_category.jsp from source html/portlet/layout_configuration.
4) Add below lines in your jsp on line no 53 just above the while loop -

//   Use your own Category.

if(Validator.equals(portletCategory.getName(),"CATEGORY.NAME"))
{
     // 125 is portlet id of ENTERPRISE_ADMIN_USER PORTLET.

Portlet userportlet = PortletLocalServiceUtil.getPortletById(user.getCompanyId(), "125");
portlets.add(userportlet);
}

5) Deploy your hook.
6) Check your Add Application menu, you are free to add user portlet to your page.

Try & Enjoy the function....:))

Column base sorting in Liferay's Search Container with BeanComparator.

Sometimes we have such requirement that we need sorting on our column basis,
   like by clicking on column it gives us sorted data in ascending/descending form.
You can define which column you want to sort and by which order.

By using BeanComparator, it gives you  flexibility not to create your own comparators.

1) Declare String variables to define order by column and order by type

String orderByCol = ParamUtil.getString(request, "orderByCol");
String orderByType = ParamUtil.getString(request, "orderByType");
if(orderByCol==null || orderByCol.equals(StringPool.BLANK)) {
request.setAttribute("orderByCol",orderByCol);
}
if(orderByType==null || orderByType.equals(StringPool.BLANK)) {
orderByType="asc";            //Default value for order by type
request.setAttribute("orderByType",orderByType);
}

// In your liferay Search Container pass this param orderByCol and orderByType

<liferay-ui:search-container  orderByCol="<%=orderByCol %>" orderByType="<%=orderByType %>" delta="10">

2) BeanComparator beanComparator=new BeanComparator(orderByCol);

if(orderByType.equals("desc"))
{
Collections.sort(list_Details,Collections.reverseOrder(beanComparator));
orderByType="asc";
}
else
{
Collections.sort(list_Details);
orderByType="desc";
}

//You have to make a copy of this list, otherwise it will throw an exception.

List<Test> copy_List_Details = list_Details;

// Assign it to results object of Search Container

results = ListUtil.subList(list_Details, searchContainer.getStart(), searchContainer.getEnd());

3)
                  //In your column's of Search Container make orderable true and pass orderableProperty,
                  //you can sort by as many colums as you want.


     <liferay-ui:search-container-column-text
     name="Start Date"
       value="<%=sDate_dis %>"
       orderable="<%=true %>"
         orderableProperty="regiStartDate"
     />


You are done with sorting, Try and Enjoy ....:))

Crop Image in Liferay for Images of Image Gallery or Profile Images

Cropping is the way to set/cut image as per your requirement. You can set height/width of the whichever area of the image, you want.
As we all knows that Liferay's Image Gallery does not provide function to crop an Image, so it's time to develop our own.

Steps to to Crop an Image in Liferay-
1) Copy these two functions into your JAVA file or you can simplify the path by creating an ext of com.liferay.portal.image.FileSystemHook.

private static File getFile(long imageId, String type) {
String path = buildPath(String.valueOf(imageId));
String _rootDir=PropsUtil.get("image.hook.file.system.root.dir");
return new File(
_rootDir + StringPool.SLASH + path + StringPool.SLASH +
imageId + StringPool.PERIOD + type);
}
private static String buildPath(String fileNameFragment) {
int fileNameFragmentLength = fileNameFragment.length();

if (fileNameFragmentLength <= 2) {
return StringPool.BLANK;
}

StringBundler sb = new StringBundler(
fileNameFragmentLength / 2 + fileNameFragmentLength);

for (int i = 0; i < fileNameFragmentLength; i += 2) {
if ((i + 2) < fileNameFragmentLength) {
sb.append(StringPool.SLASH);
sb.append(fileNameFragment.substring(i, i + 2));
}
}

return sb.toString();
}

2) You can use any jQuery plugin like tapmodo-Jcrop or Javascript to get co-ordinates of Image or preview Image before croping.

3) Then write below action as per your requirements, i keep it as simple as i can.

public static void cropImage(
ActionRequest request, ActionResponse response) throws PortalException, SystemException, IOException{
long imageId=ParamUtil.getLong(request,"imageId");
String imageType=ImageLocalServiceUtil.getImage(imageId).getType();

BufferedImage outImage=ImageIO.read(getFile(imageId, imageType));
/*
x1,y1,x2,y2 are the co-ordinates, will be passed as parameters used to crop the image.
*/
BufferedImage cropped=outImage.getSubimage(ParamUtil.getInteger(request, "x1"),ParamUtil.getInteger(request, "y1"),
ParamUtil.getInteger(request, "w"),ParamUtil.getInteger(request, "h"));

ImageIO.write(cropped,imageType,
new FileOutputStream(getFile(imageId, imageType)));
ImageLocalServiceUtil.updateImage(imageId,getFile(imageId, imageType));
outImage.flush();
cropped.flush();
}

4) Try & Enjoy the function :)

Create your own custom tld in Liferay at Portal Level.

If you are here that means you already know what is a TLD(Top Level Definition).
To include a TLD in Liferay at root level or you can say a portal level tld, you can follow the steps which will help you to create one on your own.

1. Create a hook name mytld.
2. Create mytld.jsp at /docroot/web-inf/jsps/html/taglib/ui/mytld/mytld.jsp.
3. Create an ext named mytld ext.
4. Move to web.xml by /docroot/web-inf/ext-web/docroot/web-inf/web.xml in ext.
5. Put below lines in web.xml.



<?xml version="1.0"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<jsp-config>
<taglib>
<taglib-uri>http://liferay.com/tld/ui-ext</taglib-uri>
<taglib-location>/WEB-INF/tld/liferay-fc.tld</taglib-location>
</taglib>
</jsp-config>

</web-app>



6. Create a corresponding java class for ur taglib(if required) at /docroot/web-inf/ext-util-taglib/src/com/liferay/taglib/ui/MyTld.java in ext.
7. Write required code.
8. Move to /docroot/web-inf/ext-web/docroot/web-inf/tld/liferay-fc.tld.
9. Put below lines in liferay-fc.tld.


<?xml version="1.0" encoding="UTF-8"?>

<taglib>
    <tlib-version>1.0</tlib-version>
    <jsp-version>1.1</jsp-version>
    <short-name>my-tld</short-name>
    <uri>http://liferay.com/tld/my-tld</uri>
    <tag>
            <name>foodcourt-discussion</name>
            <tag-class>com.liferay.taglib.ui.FoodCourtDiscussionTag</tag-class>
            <body-content>JSP</body-content>
            <attribute>
                <name>attribute-name1</name>
                <required>true</required>
                <rtexprvalue>true</rtexprvalue>
            </attribute>
            <attribute>
                <name>attribute-name2</name>
                <required>true</required>
                <rtexprvalue>true</rtexprvalue>
            </attribute>
    </tag>
</taglib>


10. Deploy your ext.
11.Deploy your hook.
12.Restart your server.
12.Your new tld is ready to use.


Please let me know, if there is any concern about this Blog.