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Jetty example source code file (EnvEntry.java)

This example Jetty source code file (EnvEntry.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Jetty tags/keywords

bound, context, enventry, enventry, initialcontext, naming, namingentry, namingexception, namingexception, no, object, object, string, string

The Jetty EnvEntry.java source code

// ========================================================================
// $Id: EnvEntry.java 1540 2007-01-19 12:24:10Z janb $
// Copyright 2006 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// 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 org.mortbay.jetty.plus.naming;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import org.mortbay.log.Log;
import org.mortbay.naming.NamingUtil;


/**
 * EnvEntry
 *
 *
 */
public class EnvEntry extends NamingEntry
{
    private boolean overrideWebXml;
    
    public static EnvEntry getEnvEntry (int scopeType, String jndiName)
    throws NamingException
    {
       return (EnvEntry)lookupNamingEntry(scopeType, EnvEntry.class, jndiName);
    }
    
    
    
    /**
     * @param name
     * @param value
     * @throws NamingException
     */
    public static void bindToENC (String name, String overrideName, Object value)
    throws NamingException
    {       
        if (name==null||name.trim().equals(""))
            throw new NamingException("No name for EnvEntry");
        if (overrideName==null||overrideName.trim().equals(""))
            overrideName = name;
        
        //if a locally scoped EnvEntry is present (which takes precedence over globally scoped EnvEntry of the same name)
        //then it should be bound to the ENC
        EnvEntry envEntry = EnvEntry.getEnvEntry(NamingEntry.SCOPE_LOCAL, name);
        if ((envEntry != null) && envEntry.isOverrideWebXml())
        {
            if (!overrideName.equals(name))
                envEntry.bindToENC(overrideName);
            else
                envEntry.bindToENC();
            return;
        }

        //otherwise, we either have no locally scoped EnvEntry, or it was not
        //supposed to override what is in web.xml, so check to see if we have
        //a global scoped EnvEntry that should override web.xml
        envEntry = EnvEntry.getEnvEntry(NamingEntry.SCOPE_GLOBAL, name);
        if ((envEntry != null) && envEntry.isOverrideWebXml())
        {
            if(!overrideName.equals(name))
                envEntry.bindToENC(overrideName);
            else
                envEntry.bindToENC();
            return;
        }
        
        //No EnvEntrys of this name, so we use the value from web.xml
        InitialContext ic = new InitialContext();
        Context envCtx = (Context)ic.lookup("java:comp/env");
        NamingUtil.bind(envCtx, name, value);
        Log.debug("Bound java:comp/env/"+name+"="+value);  
        
    }
    
    
    public EnvEntry (String jndiName, Object objToBind)
    throws NamingException
    {
        this(jndiName, objToBind, false);
    }
    
    public EnvEntry (String jndiName, Object objToBind, boolean overrideWebXml)
    throws NamingException
    {
        super(jndiName, objToBind);
        this.overrideWebXml = overrideWebXml;
    }
    
    
    public boolean isOverrideWebXml ()
    {
        return this.overrideWebXml;
    }
    
    /** Bind the object wrapped in this EnvEntry into java:comp/env.
     * If, however, it is set to NOT override the web.xml entry,
     * then don't bind it. This method works in conjunction with
     * org.mortbay.jetty.plus.webapp.Configuration.bindEnvEntry().
     * TODO clean this up
     * @see org.mortbay.jetty.plus.naming.NamingEntry#bindToENC()
     * @throws NamingException
     */
    public void bindToENC ()
    throws NamingException
    {
        super.bindToENC();
    }
}

Other Jetty examples (source code examples)

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