/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.app.xmlui.aspect.eperson;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.cocoon.environment.http.HttpEnvironment;
import org.apache.cocoon.selection.Selector;
import org.dspace.app.xmlui.utils.ContextUtil;
import org.dspace.authenticate.AuthenticationManager;
import org.dspace.authenticate.AuthenticationMethod;
/**
* Selector will count the number of interactive AuthenticationMethods defined in the
* dspace configuration file.
* @author Jay Paz
* @author Scott Phillips
*
*/
public class AuthenticationCountSelector implements Selector{
/**
* Returns true if the expression (in this case a number) is equal to the number
* of AuthenticationMethods defined in the dspace.cfg file.
*/
public boolean select(String expression, Map objectModel, Parameters parameters) {
// get an iterator of all the AuthenticationMethods defined
final Iterator<AuthenticationMethod> authMethods = AuthenticationManager
.authenticationMethodIterator();
final HttpServletResponse httpResponse = (HttpServletResponse) objectModel
.get(HttpEnvironment.HTTP_RESPONSE_OBJECT);
final HttpServletRequest httpRequest = (HttpServletRequest) objectModel
.get(HttpEnvironment.HTTP_REQUEST_OBJECT);
int authMethodCount = 0;
// iterate to count the methods
while(authMethods.hasNext()){
AuthenticationMethod auth = authMethods.next();
try
{
if (auth.loginPageURL(
ContextUtil.obtainContext(objectModel), httpRequest,
httpResponse) != null){
authMethodCount++;
}
}
catch (SQLException e)
{
// mmm... we should not never go here, anyway we convert it in an unchecked exception
throw new IllegalStateException(e);
}
}
final Integer exp = Integer.valueOf(expression);
return (authMethodCount == exp);
}
}