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sasmita swain
adding one column in xisting database
February 12, 2013 8:01 PM
Answer

sasmita swain

Rank: Regular Member

Posts: 171

Join Date: February 24, 2012

Recent Posts

Hi

I want to add one more column in shopping category table..how to do by using expando

can you give example of this

Thanks

Sasmita
David H Nebinger
RE: adding one column in xisting database
February 12, 2013 8:24 PM
Answer

David H Nebinger

Rank: Liferay Legend

Posts: 5739

Join Date: September 1, 2006

Recent Posts

Every entity has an expando bridge that you can use to access extra values.

Use the XxxLocalServiceUtil to retrieve the entity that you want to add an expando value to.

Once you have the entity, you can use:

1
2 if (entity.getExpandoBridge().hasAttribute("MyAttribute")) {
3   entity.getExpandoBridge().getAttribute("MyAttribute");
4 }


This returns a Serializable instance which you can cast to your desired type.

To set the entity, you can use:

1
2 if (! entity.getExpandoBridge().hasAttribute("MyAttribute")) {
3   // add the entity definition with the type the value is.
4   entity.getExpandoBridge().addAttribute("MyAttribute", ExpandoColumnConstants.INTEGER);
5 }
6
7 // now set the value
8 entity.getExpandoBridge().setAttribute("MyAttribute", myValue);


myValue must be serializable.

QED.
sasmita swain
RE: adding one column in xisting database
February 12, 2013 10:35 PM
Answer

sasmita swain

Rank: Regular Member

Posts: 171

Join Date: February 24, 2012

Recent Posts

Thanks David

actually i create table like custom field in expando table and successfully adding column to expandocolumn table..

my code is:

public void init() throws PortletException {


ExpandoTable table = null;


long categoryId = Long.parseLong("10154");
try{
ExpandoTable existingTable=ExpandoTableLocalServiceUtil.getTable(45506);
/*table=ExpandoTableLocalServiceUtil.addDefaultTable(categoryId, ShoppingCategory.class.getName());*/
String tablename=existingTable.getName();
System.out.println("table name = " + tablename);
}catch (Exception e) {
e.printStackTrace();
}
ExpandoColumn column = null;
ExpandoRow row=null;

/*long tableId = table.getTableId();
System.out.println("tableId ="+tableId);
*/
try {

column = ExpandoColumnLocalServiceUtil.addColumn(10904, "decription1", ExpandoColumnConstants.STRING);
row=ExpandoRowLocalServiceUtil.addExpandoRow(row);
}

catch(DuplicateColumnNameException dcne) {


// Get the ExpandoColumn ("comments-astronauts")


try {
column = ExpandoColumnLocalServiceUtil.getColumn(10904, "decription1");
row=ExpandoRowLocalServiceUtil.getRow(11002);
} catch (SystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (PortalException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

} catch (PortalException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}



super.init();
in jsp i hav 2 text fields.. i want to insert values in to expandovalues table..

Thanks

Sasmita





}
Siby Mathew
RE: adding one column in xisting database
February 14, 2013 3:14 AM
Answer

Siby Mathew

Rank: Expert

Posts: 256

Join Date: March 4, 2011

Recent Posts

Hi Sasmita,
David's code is also internally using the same API's that you are using.
You can use his code snippet as its simpler and more readable.

Also In my opinion, in your code, you should try to fetch the values first ...and then on the exception block, try to add new if not present.

Thanks,
Siby