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package com.sun.faces.context;
import java.util.Enumeration;
import java.util.Map;
import java.util.Iterator;
import java.util.Collections;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.io.Serializable;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.faces.application.ProjectStage;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.Util;
/**
* @see javax.faces.context.ExternalContext#getSessionMap()
*/
public class SessionMap extends BaseContextMap<Object> {
private static final Logger LOGGER = FacesLogger.APPLICATION.getLogger();
private final HttpServletRequest request;
private final ProjectStage stage;
// ------------------------------------------------------------ Constructors
public SessionMap(HttpServletRequest request, ProjectStage stage) {
this.request = request;
this.stage = stage;
}
// -------------------------------------------------------- Methods from Map
@Override
public void clear() {
HttpSession session = getSession(false);
if (session != null) {
for (Enumeration e = session.getAttributeNames();
e.hasMoreElements();) {
String name = (String) e.nextElement();
session.removeAttribute(name);
}
}
}
// Supported by maps if overridden
@Override
public void putAll(Map t) {
HttpSession session = getSession(true);
for (Iterator i = t.entrySet().iterator(); i.hasNext(); ) {
Map.Entry entry = (Map.Entry) i.next();
Object v = entry.getValue();
Object k = entry.getKey();
if (ProjectStage.Development.equals(stage) && !(v instanceof Serializable)) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING,
"jsf.context.extcontext.sessionmap.nonserializable",
new Object[] { k, v.getClass().getName() });
}
}
//noinspection NonSerializableObjectBoundToHttpSession
session.setAttribute((String) k, v);
}
}
@Override
public Object get(Object key) {
Util.notNull("key", key);
HttpSession session = getSession(false);
return ((session != null) ? session.getAttribute(key.toString()) : null);
}
@Override
public Object put(String key, Object value) {
Util.notNull("key", key);
HttpSession session = getSession(true);
Object result = session.getAttribute(key);
if (value != null && ProjectStage.Development.equals(stage) && !(value instanceof Serializable)) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING,
"jsf.context.extcontext.sessionmap.nonserializable",
new Object[]{key, value.getClass().getName()});
}
}
//noinspection NonSerializableObjectBoundToHttpSession
boolean doSet = true;
if (null != value && null != result) {
int valCode = System.identityHashCode(value);
int resultCode = System.identityHashCode(result);
doSet = valCode != resultCode;
}
if (doSet) {
session.setAttribute(key, value);
}
return (result);
}
@Override
public Object remove(Object key) {
if (key == null) {
return null;
}
HttpSession session = getSession(false);
if (session != null) {
String keyString = key.toString();
Object result = session.getAttribute(keyString);
session.removeAttribute(keyString);
return (result);
}
return null;
}
@Override
public boolean containsKey(Object key) {
HttpSession session = getSession(false);
return ((session != null)
&& session.getAttribute(key.toString()) != null);
}
@Override
public boolean equals(Object obj) {
return !(obj == null || !(obj instanceof SessionMap))
&& super.equals(obj);
}
@Override
public int hashCode() {
HttpSession session = getSession(false);
int hashCode =
7 * ((session != null) ? session.hashCode() : super.hashCode());
if (session != null) {
for (Iterator i = entrySet().iterator(); i.hasNext();) {
hashCode += i.next().hashCode();
}
}
return hashCode;
}
// --------------------------------------------- Methods from BaseContextMap
@SuppressWarnings("unchecked")
@Override
protected Iterator<Map.Entry<String,Object>> getEntryIterator() {
HttpSession session = getSession(false);
if (session != null) {
return new EntryIterator(session.getAttributeNames());
} else {
Map<String,Object> empty = Collections.emptyMap();
return empty.entrySet().iterator();
}
}
@SuppressWarnings("unchecked")
@Override
protected Iterator<String> getKeyIterator() {
HttpSession session = getSession(false);
if (session != null) {
return new KeyIterator(session.getAttributeNames());
} else {
Map<String,Object> empty = Collections.emptyMap();
return empty.keySet().iterator();
}
}
@SuppressWarnings("unchecked")
@Override
protected Iterator<Object> getValueIterator() {
HttpSession session = getSession(false);
if (session != null) {
return new ValueIterator(session.getAttributeNames());
} else {
Map<String,Object> empty = Collections.emptyMap();
return empty.values().iterator();
}
}
// --------------------------------------------------------- Private Methods
protected HttpSession getSession(boolean createNew) {
return request.getSession(createNew);
}
} // END SessionMap