package org.nutz.mvc.impl;
import java.util.Iterator;
import java.util.List;
import org.nutz.lang.Lang;
import org.nutz.mvc.ActionChain;
import org.nutz.mvc.ActionContext;
import org.nutz.mvc.Processor;
public class NutActionChain implements ActionChain {
private Processor head;
private Processor errorProcessor;
public NutActionChain(List<Processor> list, Processor errorProcessor) {
if (null != list) {
Iterator<Processor> it = list.iterator();
if (it.hasNext()) {
head = it.next();
Processor p = head;
while (it.hasNext()) {
Processor next = it.next();
p.setNext(next);
p = next;
}
}
}
this.errorProcessor = errorProcessor;
}
public void doChain(ActionContext ac) {
if (null != head)
try {
head.process(ac);
}
catch (Throwable e) {
ac.setError(e);
try {
errorProcessor.process(ac);
}
catch (Throwable ee) {
throw Lang.wrapThrow(ee);
}
}
}
}