package org.jboss.resteasy.core.interception;
import org.jboss.resteasy.annotations.interception.Precedence;
import javax.annotation.Priority;
import javax.ws.rs.Priorities;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class LegacyPrecedence
{
private static final int DEFAULTS_ORDER = 100000;
protected Map<String, Integer> precedenceOrder = new HashMap<String, Integer>();
protected List<String> precedenceList = new ArrayList<String>();
public LegacyPrecedence clone()
{
LegacyPrecedence precedence = new LegacyPrecedence();
precedence.precedenceList.addAll(precedenceList);
precedence.precedenceOrder.putAll(precedenceOrder);
return precedence;
}
public int calculateOrder(Class<?> clazz)
{
Precedence precedence = (Precedence)clazz.getAnnotation(Precedence.class);
if (precedence != null)
{
String value = precedence.value();
Integer o = precedenceOrder.get(value);
if (o == null) throw new RuntimeException("Unknown interceptor precedence: " + value);
return o;
}
else
{
for (Annotation annotation : clazz.getAnnotations())
{
precedence = annotation.annotationType().getAnnotation(Precedence.class);
if (precedence != null)
{
String value = precedence.value();
Integer o = precedenceOrder.get(value);
if (o == null) throw new RuntimeException("Unknown interceptor precedence: " + value);
return o;
}
}
}
return Priorities.USER;
}
public void addPrecedence(String precedent, int order)
{
precedenceList.add(precedent);
precedenceOrder.put(precedent, order);
}
public void appendPrecedence(String precedence)
{
precedenceList.add(precedence);
int greatest = 0;
for (Integer i : precedenceOrder.values())
{
if (i > greatest && ((int)i) != DEFAULTS_ORDER) greatest = i;
}
addPrecedence(precedence, greatest + 100);
}
public void insertPrecedenceAfter(String after, String newPrecedence)
{
int order = precedenceOrder.get(after);
order++;
addPrecedence(newPrecedence, order);
}
public void insertPrecedenceBefore(String after, String newPrecedence)
{
int order = precedenceOrder.get(after);
order--;
addPrecedence(newPrecedence, order);
}
public LegacyPrecedence()
{
precedenceOrder.put("DEFAULT", DEFAULTS_ORDER);
}
}