org.jvnet.hk2.internal.Collector Maven / Gradle / Ivy
/*
* Copyright (c) 2012, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.jvnet.hk2.internal;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import org.glassfish.hk2.api.MultiException;
/**
* This class collects errors, and can then also produce a MultiException
* from those errors if necessary
*
* @author jwells
*/
public class Collector {
private LinkedHashSet throwables;
public void addMultiException(MultiException me) {
if (me == null) return;
if (throwables == null) throwables = new LinkedHashSet();
throwables.addAll(me.getErrors());
}
/**
* Adds a throwable to the list of throwables in this collector
* @param th The throwable to add to the list
*/
public void addThrowable(Throwable th) {
if (th == null) return;
if (throwables == null) throwables = new LinkedHashSet();
if (th instanceof MultiException) {
throwables.addAll(((MultiException) th).getErrors());
}
else {
throwables.add(th);
}
}
/**
* This method will throw if the list of throwables associated with this
* collector is not empty
*
* @throws MultiException An exception with all the throwables found in this collector
*/
public void throwIfErrors() throws MultiException {
if (throwables == null || throwables.isEmpty()) return;
throw new MultiException(new LinkedList(throwables));
}
/**
* Returns true if this collector has errors
*
* @return true if the collector has errors
*/
public boolean hasErrors() {
return ((throwables != null) && (!throwables.isEmpty()));
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy