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抄了apache tomcat的源代码里关于Session, StandardSession, Manager, StandardManager中关于Session管理部分的代码。
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‎weixin-java-common/src/main/java/me/chanjar/weixin/common/session/Constants.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package me.chanjar.weixin.common.session;
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/**
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* Manifest constants for the <code>org.apache.catalina.session</code>
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* package.
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*
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* @author Craig R. McClanahan
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*/
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public class Constants {
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public static final String Package = "me.chanjar.weixin.common.session";
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}

‎weixin-java-common/src/main/java/me/chanjar/weixin/common/session/InternalSession.java‎

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package me.chanjar.weixin.common.session;
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/**
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* Created by qianjia on 15/1/21.
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*/
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public interface InternalSession {
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/**
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* Return the <code>HttpSession</code> for which this object
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* is the facade.
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*/
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WxSession getSession();
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/**
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* Set the <code>isValid</code> flag for this session.
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*
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* @param isValid The new value for the <code>isValid</code> flag
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*/
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public void setValid(boolean isValid);
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/**
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* Return the <code>isValid</code> flag for this session.
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*/
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boolean isValid();
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/**
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* Return the session identifier for this session.
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*/
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String getIdInternal();
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/**
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* Perform the internal processing required to invalidate this session,
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* without triggering an exception if the session has already expired.
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*/
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void expire();
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/**
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* Update the accessed time information for this session. This method
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* should be called by the context when a request comes in for a particular
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* session, even if the application does not reference it.
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*/
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void access();
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/**
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* Set the <code>isNew</code> flag for this session.
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*
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* @param isNew The new value for the <code>isNew</code> flag
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*/
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void setNew(boolean isNew);
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/**
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* Set the creation time for this session. This method is called by the
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* Manager when an existing Session instance is reused.
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*
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* @param time The new creation time
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*/
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void setCreationTime(long time);
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/**
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* Set the default maximum inactive interval (in seconds)
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* for Sessions created by this Manager.
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*
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* @param interval The new default value
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*/
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void setMaxInactiveInterval(int interval);
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/**
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* Set the session identifier for this session.
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*
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* @param id The new session identifier
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*/
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void setId(String id);
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}

‎weixin-java-common/src/main/java/me/chanjar/weixin/common/session/InternalSessionFacade.java‎

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package me.chanjar.weixin.common.session;
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import java.util.Enumeration;
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/**
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* Created by qianjia on 15/1/21.
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*/
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public class InternalSessionFacade implements WxSession {
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/**
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* Wrapped session object.
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*/
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private WxSession session = null;
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public InternalSessionFacade(WxSession session) {
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session = session;
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}
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@Override
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public Object getAttribute(String name) {
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return session.getAttribute(name);
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}
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@Override
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public Enumeration<String> getAttributeNames() {
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return session.getAttributeNames();
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}
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@Override
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public void setAttribute(String name, Object value) {
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session.setAttribute(name, value);
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}
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@Override
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public void removeAttribute(String name) {
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session.removeAttribute(name);
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}
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@Override
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public void invalidate() {
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session.invalidate();
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}
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}

‎weixin-java-common/src/main/java/me/chanjar/weixin/common/session/InternalSessionManager.java‎

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package me.chanjar.weixin.common.session;
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/**
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* Created by qianjia on 15/1/21.
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*/
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public interface InternalSessionManager {
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/**
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* Construct and return a new session object, based on the default
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* settings specified by this Manager's properties. The session
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* id specified will be used as the session id.
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* If a new session cannot be created for any reason, return
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* <code>null</code>.
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*
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* @param sessionId The session id which should be used to create the
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* new session; if <code>null</code>, a new session id will be
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* generated
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* @exception IllegalStateException if a new session cannot be
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* instantiated for any reason
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*/
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public InternalSession createSession(String sessionId);
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/**
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* Remove this Session from the active Sessions for this Manager.
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*
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* @param session Session to be removed
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*/
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public void remove(InternalSession session);
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/**
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* Remove this Session from the active Sessions for this Manager.
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*
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* @param session Session to be removed
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* @param update Should the expiration statistics be updated
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*/
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public void remove(InternalSession session, boolean update);
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/**
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* Add this Session to the set of active Sessions for this Manager.
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*
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* @param session Session to be added
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*/
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void add(InternalSession session);
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/**
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* Returns the number of active sessions
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*
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* @return number of sessions active
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*/
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int getActiveSessions();
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/**
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* Get a session from the recycled ones or create a new empty one.
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* The PersistentManager manager does not need to create session data
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* because it reads it from the Store.
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*/
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InternalSession createEmptySession();
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InternalSession[] findSessions();
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/**
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* Implements the Manager interface, direct call to processExpires
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*/
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public void backgroundProcess();
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}

‎weixin-java-common/src/main/java/me/chanjar/weixin/common/session/LocalStrings.properties‎

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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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applicationSession.session.ise=invalid session state
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applicationSession.value.iae=null value
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fileStore.saving=Saving Session {0} to file {1}
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fileStore.loading=Loading Session {0} from file {1}
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fileStore.removing=Removing Session {0} at file {1}
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fileStore.deleteFailed=Unable to delete file [{0}] which is preventing the creation of the session storage location
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fileStore.createFailed=Unable to create directory [{0}] for the storage of session data
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JDBCStore.close=Exception closing database connection {0}
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JDBCStore.saving=Saving Session {0} to database {1}
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JDBCStore.loading=Loading Session {0} from database {1}
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JDBCStore.removing=Removing Session {0} at database {1}
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JDBCStore.SQLException=SQL Error {0}
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serverSession.value.iae=null value
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sessionManagerImpl.createRandom=Created random number generator for session ID generation in {0}ms.
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sessionManagerImpl.createSession.tmase=createSession: Too many active sessions
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sessionManagerImpl.sessionTimeout=Invalid session timeout setting {0}
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sessionManagerImpl.getSession.ise=getSession: Session id cannot be null
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sessionManagerImpl.expireException=processsExpire: Exception during session expiration
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sessionManagerImpl.loading=Loading persisted sessions from {0}
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sessionManagerImpl.loading.cnfe=ClassNotFoundException while loading persisted sessions: {0}
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sessionManagerImpl.loading.ioe=IOException while loading persisted sessions: {0}
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sessionManagerImpl.unloading=Saving persisted sessions to {0}
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sessionManagerImpl.unloading.debug=Unloading persisted sessions
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sessionManagerImpl.unloading.ioe=IOException while saving persisted sessions: {0}
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sessionManagerImpl.unloading.nosessions=No persisted sessions to unload
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sessionManagerImpl.managerLoad=Exception loading sessions from persistent storage
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sessionManagerImpl.managerUnload=Exception unloading sessions to persistent storage
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sessionManagerImpl.createSession.ise=createSession: Session id cannot be null
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sessionImpl.attributeEvent=Session attribute event listener threw exception
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sessionImpl.bindingEvent=Session binding event listener threw exception
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sessionImpl.invalidate.ise=invalidate: Session already invalidated
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sessionImpl.isNew.ise=isNew: Session already invalidated
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sessionImpl.getAttribute.ise=getAttribute: Session already invalidated
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sessionImpl.getAttributeNames.ise=getAttributeNames: Session already invalidated
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sessionImpl.getCreationTime.ise=getCreationTime: Session already invalidated
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sessionImpl.getThisAccessedTime.ise=getThisAccessedTime: Session already invalidated
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sessionImpl.getLastAccessedTime.ise=getLastAccessedTime: Session already invalidated
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sessionImpl.getId.ise=getId: Session already invalidated
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sessionImpl.getMaxInactiveInterval.ise=getMaxInactiveInterval: Session already invalidated
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sessionImpl.getValueNames.ise=getValueNames: Session already invalidated
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sessionImpl.logoutfail=Exception logging out user when expiring session
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sessionImpl.notSerializable=Cannot serialize session attribute {0} for session {1}
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sessionImpl.removeAttribute.ise=removeAttribute: Session already invalidated
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sessionImpl.sessionEvent=Session event listener threw exception
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sessionImpl.setAttribute.iae=setAttribute: Non-serializable attribute {0}
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sessionImpl.setAttribute.ise=setAttribute: Session [{0}] has already been invalidated
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sessionImpl.setAttribute.namenull=setAttribute: name parameter cannot be null
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sessionImpl.sessionCreated=Created Session id = {0}
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persistentManager.loading=Loading {0} persisted sessions
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persistentManager.unloading=Saving {0} persisted sessions
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persistentManager.expiring=Expiring {0} sessions before saving them
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persistentManager.deserializeError=Error deserializing Session {0}: {1}
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persistentManager.serializeError=Error serializing Session {0}: {1}
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persistentManager.swapMaxIdle=Swapping session {0} to Store, idle for {1} seconds
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persistentManager.backupMaxIdle=Backing up session {0} to Store, idle for {1} seconds
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persistentManager.backupException=Exception occurred when backing up Session {0}: {1}
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persistentManager.tooManyActive=Too many active sessions, {0}, looking for idle sessions to swap out
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persistentManager.swapTooManyActive=Swapping out session {0}, idle for {1} seconds too many sessions active
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persistentManager.processSwaps=Checking for sessions to swap out, {0} active sessions in memory
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persistentManager.activeSession=Session {0} has been idle for {1} seconds
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persistentManager.swapIn=Swapping session {0} in from Store
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persistentManager.swapInException=Exception in the Store during swapIn: {0}
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persistentManager.swapInInvalid=Swapped session {0} is invalid
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persistentManager.storeKeysException=Unable to determine the list of session IDs for sessions in the session store, assuming that the store is empty
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persistentManager.storeSizeException=Unable to determine the number of sessions in the session store, assuming that the store is empty

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