com.viaoa.web.OASession Maven / Gradle / Ivy

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/*  Copyright 1999-2015 Vince Via [email protected]
    Licensed 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 com.viaoa.web;

import java.lang.ref.WeakReference;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Logger;

import javax.servlet.http.*;

import com.viaoa.util.OADateTime;
import com.viaoa.util.OAString;

/**
    Object used by one user session.
    @see OAApplication#createSession()
*/
public class OASession extends OABase {
    private static final long serialVersionUID = 1L;
    private static Logger LOG = Logger.getLogger(OASession.class.getName());
    
    protected OAApplication application;

    protected transient WeakReference wrefRequest;  // set by oaform.jsp
    protected transient WeakReference wrefResponse;


    protected transient ArrayList alBreadcrumbForm = new ArrayList();
    protected transient final ArrayList alForm = new ArrayList();

    private TimeZone timeZone;

    private int jsLibrary = OAApplication.JSLibrary_JQueryUI; 
    
    /**
     * set the preferred js library to use. 
     * @param type see {@link OAApplication#JSLibrary_JQueryUI} {@link OAApplication#JSLibrary_Bootstrap}
     */
    public void setDefaultJsLibrary(int type) {
        this.jsLibrary = type;
    }
    public int getDefaultJsLibrary() {
        if (this.jsLibrary != 0 || getApplication() == null) return this.jsLibrary;
        return getApplication().getDefaultJsLibrary();
    }

    
    public OASession() {
    }

    public void removeAll() {
        super.removeAll();
        synchronized (alForm) {
            alForm.clear();
        }
        alBreadcrumbForm.clear();
    }

    public void setApplication(OAApplication app) {
        this.application = app;
    }
    public OAApplication getApplication() {
        return application;
    }

    private ArrayList getBreadcrumbForms() {
        if (alBreadcrumbForm == null) {
            alBreadcrumbForm = new ArrayList(10);
        }
        return alBreadcrumbForm;
    }

    public void setLastBreadCrumbForm(OAForm f) {
        int x = getBreadcrumbForms().indexOf(f);
        if (x < 0) alBreadcrumbForm.add(f);
        else {
            while (alBreadcrumbForm.size() > (x+1)) {
                alBreadcrumbForm.remove(x+1);
            }
        }
    }
    public void setBreadCrumbForms(OAForm f) {
        if (f == null) return;
        getBreadcrumbForms().clear();
        alBreadcrumbForm.add(f);
    }
    public void clearBreadCrumbForms() {
        getBreadcrumbForms().clear();
    }

    public OAForm[] getBreadCrumbForms() {
        return (OAForm[]) getBreadcrumbForms().toArray(new OAForm[getBreadcrumbForms().size()]);
    }


    public OAForm createForm(String id) {
        removeForm(getForm(id));
        OAForm f = new OAForm(id, null);
        addForm(f);
        return f;
    }
    /**
     * 
     * @param id ex: "employee"
     * @param page ex: "employee.jsp"
     * @return
     */
    public OAForm createForm(String id, String page) {
        removeForm(getForm(id));
        OAForm f = new OAForm(id, page);
        addForm(f);
        return f;
    }
    public void addForm(OAForm form) {
        if (form == null) return;
        String id = form.getId();
        if (id == null) return;

        synchronized (alForm) {
            for (int i=0; i hmTzDst = new ConcurrentHashMap<>(); 
    private final ConcurrentHashMap hmTzNoDst = new ConcurrentHashMap<>(); 
    
    public TimeZone getBrowserTimeZone() {
        if (timeZone != null) return timeZone;

        final int msRawTzOffset = -(browserRawTzOffset * 60 * 1000);
        
        if (browserSupportsDST) {
            timeZone = hmTzDst.get(msRawTzOffset);
        }
        else {
            timeZone = hmTzNoDst.get(msRawTzOffset);
        }
        if (timeZone != null) return timeZone;
        
        String[] ss = TimeZone.getAvailableIDs(msRawTzOffset);
        if (ss != null && ss.length > 0) {
            TimeZone tz = null;
            for (int i=0; ss != null && i < ss.length; i++) {
                tz = TimeZone.getTimeZone(ss[i]);
                if (tz.useDaylightTime() == browserSupportsDST) {
                    timeZone = tz;
                    break;
                }
                if (tz != null) timeZone = tz;  // fallback
            }
        }

        if (timeZone != null) {
            if (browserSupportsDST) {
                hmTzDst.put(msRawTzOffset, timeZone);
            }
            else {
                hmTzNoDst.put(msRawTzOffset, timeZone);
            }
        }
        return timeZone;
    }

    protected OADateTime dtCreated;
    protected String sessionId;
    protected OADateTime dtLastAccessed;
    protected int maxInactiveSeconds;
    
    public OADateTime getCreated() {
        return dtCreated;
    }
    public String getSessionId() {
        return sessionId;
    }
    public OADateTime getLastAccessed() {
        return dtLastAccessed;
    }
    public int getMaxInactiveSeconds() {
        return maxInactiveSeconds;
    }
    
    protected void update(HttpSession session) {
        long ts = session.getCreationTime();
        this.dtCreated = new OADateTime(ts);
        this.sessionId = session.getId();
        long tsLast = session.getLastAccessedTime();
        this.dtLastAccessed = new OADateTime(tsLast);
        this.maxInactiveSeconds = session.getMaxInactiveInterval();
    }
}