Liferay get Organization by using User or get All Organizations in liferay database

This blog is just used to record methods I wrote, but they're useless for my project now. In case I need to use them in the future, I record them in the blog.

//In our MVCPortlet, we can get RenderRequest, when we get RenderRequest, we can get user and get user's organization hierarchy.

public static List<String> getTwitterScreenNames(RenderRequest renderRequest) {

List<String> twitterScreenNames = new ArrayList<String>();

ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest

.getAttribute(WebKeys.THEME_DISPLAY);

long userId = themeDisplay.getUserId();

try {

List<Organization> orgs = OrganizationLocalServiceUtil

.getUserOrganizations(userId);

for (Organization org : orgs) {

ExpandoBridge bridge = org.getExpandoBridge();

String screenName = (String) ExpandoValueLocalServiceUtil

.getData(bridge.getClassName(),

ExpandoTableConstants.DEFAULT_TABLE_NAME,

"twitter", org.getPrimaryKey());

twitterScreenNames.add(screenName);

while (org.getParentOrganizationId() != 0) {

org = org.getParentOrganization();

bridge = org.getExpandoBridge();

screenName = (String) ExpandoValueLocalServiceUtil.getData(

bridge.getClassName(),

ExpandoTableConstants.DEFAULT_TABLE_NAME,

"twitter", org.getPrimaryKey());

twitterScreenNames.add(screenName);

}

}

} catch (PortalException e) {

e.printStackTrace();

} catch (SystemException e) {

e.printStackTrace();

}

return twitterScreenNames;

}

//This method is to get all organization in liferay database.

public static List<String> getAllTwitterScreenNames()

throws SystemException, PortalException {

List<String> twitterScreenNames = new ArrayList<String>();

List<Organization> orgs = OrganizationLocalServiceUtil

.getOrganizations(QueryUtil.ALL_POS, QueryUtil.ALL_POS);

for (Organization org : orgs) {

ExpandoBridge bridge = org.getExpandoBridge();

if (bridge.hasAttribute("twitter")) {

String screenName = (String) ExpandoValueLocalServiceUtil

.getData(bridge.getClassName(),

ExpandoTableConstants.DEFAULT_TABLE_NAME,

"twitter", org.getPrimaryKey());

twitterScreenNames.add(screenName);

while (org.getParentOrganizationId() != 0) {

org = org.getParentOrganization();

bridge = org.getExpandoBridge();

screenName = (String) ExpandoValueLocalServiceUtil.getData(

bridge.getClassName(),

ExpandoTableConstants.DEFAULT_TABLE_NAME,

"twitter", org.getPrimaryKey());

twitterScreenNames.add(screenName);

}

}

}

return twitterScreenNames;

}