/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.cache.websession;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Collection;
import javax.cache.processor.EntryProcessor;
import javax.cache.processor.MutableEntry;
import org.apache.ignite.internal.util.typedef.T2;
import org.apache.ignite.internal.util.typedef.internal.U;
/**
* Session listener for web sessions caching.
*/
class WebSessionListener {
/**
* Creates new instance of attribute processor. Used for compatibility.
*
* @param updates Updates.
* @return New instance of attribute processor.
*/
public static EntryProcessor<String, WebSession, Void> newAttributeProcessor(
final Collection<T2<String, Object>> updates) {
return new AttributesProcessor(updates);
}
/**
* Multiple attributes update transformer.
*/
private static class AttributesProcessor implements EntryProcessor<String, WebSession, Void>, Externalizable {
/** */
private static final long serialVersionUID = 0L;
/** Updates list. */
private Collection<T2<String, Object>> updates;
/**
* Required by {@link Externalizable}.
*/
public AttributesProcessor() {
// No-op.
}
/**
* @param updates Updates list.
*/
AttributesProcessor(Collection<T2<String, Object>> updates) {
assert updates != null;
this.updates = updates;
}
/** {@inheritDoc} */
@Override public Void process(MutableEntry<String, WebSession> entry, Object... args) {
if (!entry.exists())
return null;
WebSession ses0 = entry.getValue();
WebSession ses = new WebSession(ses0.getId(), ses0);
for (T2<String, Object> update : updates) {
String name = update.get1();
assert name != null;
Object val = update.get2();
if (val != null)
ses.setAttribute(name, val);
else
ses.removeAttribute(name);
}
entry.setValue(ses);
return null;
}
/** {@inheritDoc} */
@Override public void writeExternal(ObjectOutput out) throws IOException {
U.writeCollection(out, updates);
}
/** {@inheritDoc} */
@Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
updates = U.readCollection(in);
}
}
}