/jboss-as-7.1.1.Final/clustering/web-infinispan/src/main/java/org/jboss/as/clustering/web/infinispan/SessionMapEntry.java
Java | 82 lines | 29 code | 11 blank | 42 comment | 4 complexity | dcf5c15895bf4368729ee8523770da88 MD5 | raw file
Possible License(s): LGPL-2.1, Apache-2.0
- /*
- * JBoss, Home of Professional Open Source.
- * Copyright 2010, Red Hat Middleware LLC, and individual contributors
- * as indicated by the @author tags. See the copyright.txt file in the
- * distribution for a full listing of individual contributors.
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this software; if not, write to the Free
- * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
- */
- package org.jboss.as.clustering.web.infinispan;
- import java.util.Map;
- import org.jboss.as.clustering.web.DistributableSessionMetadata;
- /**
- * Enumerates the properties of a session to be stored in a cache entry. Provides get/put methods which encapsulate away the
- * details of the map key.
- *
- * @author Paul Ferraro
- */
- public enum SessionMapEntry {
- VERSION(Integer.class), TIMESTAMP(Long.class), METADATA(DistributableSessionMetadata.class), ATTRIBUTES(Object.class);
- private Class<?> targetClass;
- private SessionMapEntry(Class<?> targetClass) {
- this.targetClass = targetClass;
- }
- /**
- * Returns the value associated with this atomic map entry.
- *
- * @param <T> the value type
- * @param map an atomic map
- * @return the entry value
- */
- public <T> T get(Map<Object, Object> map) {
- return this.<T> cast(map.get(this.key()));
- }
- /**
- * Add this entry to the specified map if the specified value is non-null.
- *
- * @param <T> the value type
- * @param map an atomic map
- * @param value the entry value
- * @return the old entry value, or null if no previous entry existed
- */
- public <T> T put(Map<Object, Object> map, Object value) throws IllegalArgumentException {
- if (value == null)
- return null;
- if (!this.targetClass.isInstance(value)) {
- throw InfinispanWebMessages.MESSAGES.invalidMapValue(value.getClass().getName(), this);
- }
- return this.<T> cast(map.put(this.key(), value));
- }
- @SuppressWarnings("unchecked")
- private <T> T cast(Object value) {
- Class<T> targetClass = (Class<T>) this.targetClass;
- return (value != null) ? targetClass.cast(value) : null;
- }
- private Byte key() {
- return Byte.valueOf((byte) this.ordinal());
- }
- }