Examples with Context javax.naming.Context used on opensource projects

Example 41 with Context

use of javax.naming.Context in project jetty.project by eclipse.

the class TestJNDI method testThreadContextClassloaderAndCurrentContext.

@Test
public void testThreadContextClassloaderAndCurrentContext() throws Exception {
    //create a jetty context, and start it so that its classloader it created
    //and it is the current context
    ClassLoader currentLoader = Thread.currentThread().getContextClassLoader();
    ContextHandler ch = new ContextHandler();
    URLClassLoader chLoader = new URLClassLoader(new URL[0], currentLoader);
    ch.setClassLoader(chLoader);
    Server server = new Server();
    HandlerList hl = new HandlerList();
    server.setHandler(hl);
    hl.addHandler(ch);
    //Create another one
    ContextHandler ch2 = new ContextHandler();
    URLClassLoader ch2Loader = new URLClassLoader(new URL[0], currentLoader);
    ch2.setClassLoader(ch2Loader);
    hl.addHandler(ch2);
    try {
        ch.setContextPath("/ch");
        ch.addEventListener(new ServletContextListener() {

            private Context comp;

            private Object testObj = new Object();

            public void contextInitialized(ServletContextEvent sce) {
                try {
                    InitialContext initCtx = new InitialContext();
                    Context java = (Context) initCtx.lookup("java:");
                    assertNotNull(java);
                    comp = (Context) initCtx.lookup("java:comp");
                    assertNotNull(comp);
                    Context env = ((Context) comp).createSubcontext("env");
                    assertNotNull(env);
                    env.bind("ch", testObj);
                } catch (Exception e) {
                    throw new IllegalStateException(e);
                }
            }

            public void contextDestroyed(ServletContextEvent sce) {
                try {
                    assertNotNull(comp);
                    assertEquals(testObj, comp.lookup("env/ch"));
                    comp.destroySubcontext("env");
                } catch (Exception e) {
                    throw new IllegalStateException(e);
                }
            }
        });
        //Starting the context makes it current and creates a classloader for it
        ch.start();
        ch2.setContextPath("/ch2");
        ch2.addEventListener(new ServletContextListener() {

            private Context comp;

            private Object testObj = new Object();

            public void contextInitialized(ServletContextEvent sce) {
                try {
                    InitialContext initCtx = new InitialContext();
                    comp = (Context) initCtx.lookup("java:comp");
                    assertNotNull(comp);
                    //another context's bindings should not be visible
                    Context env = ((Context) comp).createSubcontext("env");
                    try {
                        env.lookup("ch");
                        fail("java:comp/env visible from another context!");
                    } catch (NameNotFoundException e) {
                    //expected
                    }
                } catch (Exception e) {
                    throw new IllegalStateException(e);
                }
            }

            public void contextDestroyed(ServletContextEvent sce) {
                try {
                    assertNotNull(comp);
                    comp.destroySubcontext("env");
                } catch (Exception e) {
                    throw new IllegalStateException(e);
                }
            }
        });
        //make the new context the current one
        ch2.start();
    } finally {
        ch.stop();
        ch2.stop();
        Thread.currentThread().setContextClassLoader(currentLoader);
    }
}

Example 42 with Context

use of javax.naming.Context in project jetty.project by eclipse.

the class TestJNDI method testIt.

@Test
public void testIt() throws Exception {
    //set up some classloaders
    Thread currentThread = Thread.currentThread();
    ClassLoader currentLoader = currentThread.getContextClassLoader();
    ClassLoader childLoader1 = new URLClassLoader(new URL[0], currentLoader);
    ClassLoader childLoader2 = new URLClassLoader(new URL[0], currentLoader);
    try {
        //Uncomment to aid with debug
        /*
            javaRootURLContext.getRoot().addListener(new NamingContext.Listener()
            {
                public void unbind(NamingContext ctx, Binding binding)
                {
                    System.err.println("java unbind "+binding+" from "+ctx.getName());
                }
                
                public Binding bind(NamingContext ctx, Binding binding)
                {
                    System.err.println("java bind "+binding+" to "+ctx.getName());
                    return binding;
                }
            });
            
            localContextRoot.getRoot().addListener(new NamingContext.Listener()
            {
                public void unbind(NamingContext ctx, Binding binding)
                {
                    System.err.println("local unbind "+binding+" from "+ctx.getName());
                }
                
                public Binding bind(NamingContext ctx, Binding binding)
                {
                    System.err.println("local bind "+binding+" to "+ctx.getName());
                    return binding;
                }
            });
            */
        //Set up the tccl before doing any jndi operations
        currentThread.setContextClassLoader(childLoader1);
        InitialContext initCtx = new InitialContext();
        //Test we can lookup the root java: naming tree
        Context sub0 = (Context) initCtx.lookup("java:");
        assertNotNull(sub0);
        //already be bound 
        try {
            Context sub1 = sub0.createSubcontext("comp");
            fail("Comp should already be bound");
        } catch (NameAlreadyBoundException e) {
        //expected exception
        }
        //check bindings at comp
        Context sub1 = (Context) initCtx.lookup("java:comp");
        assertNotNull(sub1);
        Context sub2 = sub1.createSubcontext("env");
        assertNotNull(sub2);
        initCtx.bind("java:comp/env/rubbish", "abc");
        assertEquals("abc", initCtx.lookup("java:comp/env/rubbish"));
        //check binding LinkRefs
        LinkRef link = new LinkRef("java:comp/env/rubbish");
        initCtx.bind("java:comp/env/poubelle", link);
        assertEquals("abc", initCtx.lookup("java:comp/env/poubelle"));
        //check binding References
        StringRefAddr addr = new StringRefAddr("blah", "myReferenceable");
        Reference ref = new Reference(java.lang.String.class.getName(), addr, MyObjectFactory.class.getName(), null);
        initCtx.bind("java:comp/env/quatsch", ref);
        assertEquals(MyObjectFactory.myString, initCtx.lookup("java:comp/env/quatsch"));
        //test binding something at java:
        Context sub3 = initCtx.createSubcontext("java:zero");
        initCtx.bind("java:zero/one", "ONE");
        assertEquals("ONE", initCtx.lookup("java:zero/one"));
        //change the current thread's classloader to check distinct naming
        currentThread.setContextClassLoader(childLoader2);
        Context otherSub1 = (Context) initCtx.lookup("java:comp");
        assertTrue(!(sub1 == otherSub1));
        try {
            initCtx.lookup("java:comp/env/rubbish");
            fail("env should not exist for this classloader");
        } catch (NameNotFoundException e) {
        //expected
        }
        //put the thread's classloader back
        currentThread.setContextClassLoader(childLoader1);
        //test rebind with existing binding
        initCtx.rebind("java:comp/env/rubbish", "xyz");
        assertEquals("xyz", initCtx.lookup("java:comp/env/rubbish"));
        //test rebind with no existing binding
        initCtx.rebind("java:comp/env/mullheim", "hij");
        assertEquals("hij", initCtx.lookup("java:comp/env/mullheim"));
        //test that the other bindings are already there
        assertEquals("xyz", initCtx.lookup("java:comp/env/poubelle"));
        //test java:/comp/env/stuff
        assertEquals("xyz", initCtx.lookup("java:/comp/env/poubelle/"));
        //test list Names
        NamingEnumeration nenum = initCtx.list("java:comp/env");
        HashMap results = new HashMap();
        while (nenum.hasMore()) {
            NameClassPair ncp = (NameClassPair) nenum.next();
            results.put(ncp.getName(), ncp.getClassName());
        }
        assertEquals(4, results.size());
        assertEquals("java.lang.String", results.get("rubbish"));
        assertEquals("javax.naming.LinkRef", results.get("poubelle"));
        assertEquals("java.lang.String", results.get("mullheim"));
        assertEquals("javax.naming.Reference", results.get("quatsch"));
        //test list Bindings
        NamingEnumeration benum = initCtx.list("java:comp/env");
        assertEquals(4, results.size());
        //test NameInNamespace
        assertEquals("comp/env", sub2.getNameInNamespace());
        //test close does nothing
        Context closeCtx = (Context) initCtx.lookup("java:comp/env");
        closeCtx.close();
        //test what happens when you close an initial context
        InitialContext closeInit = new InitialContext();
        closeInit.close();
        //check locking the context
        Context ectx = (Context) initCtx.lookup("java:comp");
        ectx.bind("crud", "xxx");
        ectx.addToEnvironment("org.eclipse.jndi.immutable", "TRUE");
        assertEquals("xxx", initCtx.lookup("java:comp/crud"));
        try {
            ectx.bind("crud2", "xxx2");
        } catch (NamingException ne) {
        //expected failure to modify immutable context
        }
        initCtx.close();
    } finally {
        //make some effort to clean up
        InitialContext ic = new InitialContext();
        Context java = (Context) ic.lookup("java:");
        java.destroySubcontext("zero");
        java.destroySubcontext("fee");
        currentThread.setContextClassLoader(childLoader1);
        Context comp = (Context) ic.lookup("java:comp");
        comp.destroySubcontext("env");
        comp.unbind("crud");
        comp.unbind("crud2");
        currentThread.setContextClassLoader(currentLoader);
    }
}

Example 43 with Context

use of javax.naming.Context in project jetty.project by eclipse.

the class NamingContext method lookup.

/*------------------------------------------------*/
/**
     * Lookup a binding by name
     *
     * @param name name of bound object
     * @exception NamingException if an error occurs
     */
public Object lookup(Name name) throws NamingException {
    if (__log.isDebugEnabled())
        __log.debug("Looking up name=\"" + name + "\"");
    Name cname = toCanonicalName(name);
    if ((cname == null) || (cname.size() == 0)) {
        __log.debug("Null or empty name, returning copy of this context");
        NamingContext ctx = new NamingContext(_env, _name, _parent, _parser);
        ctx._bindings = _bindings;
        return ctx;
    }
    if (cname.size() == 1) {
        Binding binding = getBinding(cname);
        if (binding == null) {
            NameNotFoundException nnfe = new NameNotFoundException();
            nnfe.setRemainingName(cname);
            throw nnfe;
        }
        Object o = binding.getObject();
        //handle links by looking up the link
        if (o instanceof LinkRef) {
            //if link name starts with ./ it is relative to current context
            String linkName = ((LinkRef) o).getLinkName();
            if (linkName.startsWith("./"))
                return this.lookup(linkName.substring(2));
            else {
                //link name is absolute
                InitialContext ictx = new InitialContext();
                return ictx.lookup(linkName);
            }
        } else if (o instanceof Reference) {
            //deference the object
            try {
                return NamingManager.getObjectInstance(o, cname, this, _env);
            } catch (NamingException e) {
                throw e;
            } catch (Exception e) {
                __log.warn("", e);
                throw new NamingException(e.getMessage());
            }
        } else
            return o;
    }
    //it is a multipart name, recurse to the first subcontext
    String firstComponent = cname.get(0);
    Object ctx = null;
    if (firstComponent.equals(""))
        ctx = this;
    else {
        Binding binding = getBinding(firstComponent);
        if (binding == null) {
            NameNotFoundException nnfe = new NameNotFoundException();
            nnfe.setRemainingName(cname);
            throw nnfe;
        }
        //as we have bound a reference to an object factory
        //for the component specific contexts
        //at "comp" we need to resolve the reference
        ctx = binding.getObject();
        if (ctx instanceof Reference) {
            //deference the object
            try {
                ctx = NamingManager.getObjectInstance(ctx, getNameParser("").parse(firstComponent), this, _env);
            } catch (NamingException e) {
                throw e;
            } catch (Exception e) {
                __log.warn("", e);
                throw new NamingException(e.getMessage());
            }
        }
    }
    if (!(ctx instanceof Context))
        throw new NotContextException();
    return ((Context) ctx).lookup(cname.getSuffix(1));
}

Example 44 with Context

use of javax.naming.Context in project jetty.project by eclipse.

the class NamingContext method createSubcontext.

/*------------------------------------------------*/
/**
     * Create a context as a child of this one
     *
     * @param name a <code>Name</code> value
     * @return a <code>Context</code> value
     * @exception NamingException if an error occurs
     */
public Context createSubcontext(Name name) throws NamingException {
    if (isLocked()) {
        NamingException ne = new NamingException("This context is immutable");
        ne.setRemainingName(name);
        throw ne;
    }
    Name cname = toCanonicalName(name);
    if (cname == null)
        throw new NamingException("Name is null");
    if (cname.size() == 0)
        throw new NamingException("Name is empty");
    if (cname.size() == 1) {
        //not permitted to bind if something already bound at that name
        Binding binding = getBinding(cname);
        if (binding != null)
            throw new NameAlreadyBoundException(cname.toString());
        Context ctx = new NamingContext((Hashtable) _env.clone(), cname.get(0), this, _parser);
        addBinding(cname, ctx);
        return ctx;
    }
    //If the name has multiple subcontexts, walk the hierarchy by
    //fetching the first one. All intermediate subcontexts in the
    //name must already exist.
    String firstComponent = cname.get(0);
    Object ctx = null;
    if (firstComponent.equals(""))
        ctx = this;
    else {
        Binding binding = getBinding(firstComponent);
        if (binding == null)
            throw new NameNotFoundException(firstComponent + " is not bound");
        ctx = binding.getObject();
        if (ctx instanceof Reference) {
            //deference the object
            if (__log.isDebugEnabled())
                __log.debug("Object bound at " + firstComponent + " is a Reference");
            try {
                ctx = NamingManager.getObjectInstance(ctx, getNameParser("").parse(firstComponent), this, _env);
            } catch (NamingException e) {
                throw e;
            } catch (Exception e) {
                __log.warn("", e);
                throw new NamingException(e.getMessage());
            }
        }
    }
    if (ctx instanceof Context) {
        return ((Context) ctx).createSubcontext(cname.getSuffix(1));
    } else
        throw new NotContextException(firstComponent + " is not a Context");
}

Example 45 with Context

use of javax.naming.Context in project jetty.project by eclipse.

the class NamingContext method list.

/*------------------------------------------------*/
/**
     * List all names bound at Context named by Name
     *
     * @param name a <code>Name</code> value
     * @return a <code>NamingEnumeration</code> value
     * @exception NamingException if an error occurs
     */
public NamingEnumeration list(Name name) throws NamingException {
    if (__log.isDebugEnabled())
        __log.debug("list() on Context=" + getName() + " for name=" + name);
    Name cname = toCanonicalName(name);
    if (cname == null) {
        return new NameEnumeration(__empty.iterator());
    }
    if (cname.size() == 0) {
        return new NameEnumeration(_bindings.values().iterator());
    }
    //multipart name
    String firstComponent = cname.get(0);
    Object ctx = null;
    if (firstComponent.equals(""))
        ctx = this;
    else {
        Binding binding = getBinding(firstComponent);
        if (binding == null)
            throw new NameNotFoundException();
        ctx = binding.getObject();
        if (ctx instanceof Reference) {
            //deference the object
            if (__log.isDebugEnabled())
                __log.debug("Dereferencing Reference for " + name.get(0));
            try {
                ctx = NamingManager.getObjectInstance(ctx, getNameParser("").parse(firstComponent), this, _env);
            } catch (NamingException e) {
                throw e;
            } catch (Exception e) {
                __log.warn("", e);
                throw new NamingException(e.getMessage());
            }
        }
    }
    if (!(ctx instanceof Context))
        throw new NotContextException();
    return ((Context) ctx).list(cname.getSuffix(1));
}