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package com.sun.jndi.cosnaming;

import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.spi.*;

import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;

import com.sun.jndi.toolkit.corba.CorbaUtils;

A convenience class to map the COS Naming exceptions to the JNDI exceptions.
Author:Raj Krishnamurthy
/** * A convenience class to map the COS Naming exceptions to the JNDI exceptions. * @author Raj Krishnamurthy */
public final class ExceptionMapper { private ExceptionMapper() {} // ensure no instance private static final boolean debug = false; public static final NamingException mapException(Exception e, CNCtx ctx, NameComponent[] inputName) throws NamingException { if (e instanceof NamingException) { return (NamingException)e; } if (e instanceof RuntimeException) { throw (RuntimeException)e; } NamingException ne; if (e instanceof NotFound) { if (ctx.federation) { return tryFed((NotFound)e, ctx, inputName); } else { ne = new NameNotFoundException(); } } else if (e instanceof CannotProceed) { ne = new CannotProceedException(); NamingContext nc = ((CannotProceed) e).cxt; NameComponent[] rest = ((CannotProceed) e).rest_of_name; // %%% We assume that rest returns *all* unprocessed components. // Don't' know if that is a good assumption, given // NotFound doesn't set rest as expected. -RL if (inputName != null && (inputName.length > rest.length)) { NameComponent[] resolvedName = new NameComponent[inputName.length - rest.length]; System.arraycopy(inputName, 0, resolvedName, 0, resolvedName.length); // Wrap resolved NamingContext inside a CNCtx // Guess that its name (which is relative to ctx) // is the part of inputName minus rest_of_name ne.setResolvedObj(new CNCtx(ctx._orb, ctx.orbTracker, nc, ctx._env, ctx.makeFullName(resolvedName))); } else { ne.setResolvedObj(ctx); } ne.setRemainingName(CNNameParser.cosNameToName(rest)); } else if (e instanceof InvalidName) { ne = new InvalidNameException(); } else if (e instanceof AlreadyBound) { ne = new NameAlreadyBoundException(); } else if (e instanceof NotEmpty) { ne = new ContextNotEmptyException(); } else { ne = new NamingException("Unknown reasons"); } ne.setRootCause(e); return ne; } private static final NamingException tryFed(NotFound e, CNCtx ctx, NameComponent[] inputName) throws NamingException { NameComponent[] rest = e.rest_of_name; if (debug) { System.out.println(e.why.value()); System.out.println(rest.length); } // %%% Using 1.2 & 1.3 Sun's tnameserv, 'rest' contains only the first // component that failed, not *rest* as advertized. This is useless // because what if you have something like aa/aa/aa/aa/aa. // If one of those is not found, you get "aa" as 'rest'. if (rest.length == 1 && inputName != null) { // Check that we're not talking to 1.2/1.3 Sun tnameserv NameComponent lastIn = inputName[inputName.length-1]; if (rest[0].id.equals(lastIn.id) && rest[0].kind != null && rest[0].kind.equals(lastIn.kind)) { // Might be legit ; } else { // Due to 1.2/1.3 bug that always returns single-item 'rest' NamingException ne = new NameNotFoundException(); ne.setRemainingName(CNNameParser.cosNameToName(rest)); ne.setRootCause(e); throw ne; } } // Fixed in 1.4; perform calculations based on correct (1.4) behavior // Calculate the components of the name that has been resolved NameComponent[] resolvedName = null; int len = 0; if (inputName != null && (inputName.length >= rest.length)) { if (e.why == NotFoundReason.not_context) { // First component of rest is found but not a context; keep it // as part of resolved name len = inputName.length - (rest.length - 1); // Remove resolved component from rest if (rest.length == 1) { // No more remaining rest = null; } else { NameComponent[] tmp = new NameComponent[rest.length-1]; System.arraycopy(rest, 1, tmp, 0, tmp.length); rest = tmp; } } else { len = inputName.length - rest.length; } if (len > 0) { resolvedName = new NameComponent[len]; System.arraycopy(inputName, 0, resolvedName, 0, len); } } // Create CPE and set common fields CannotProceedException cpe = new CannotProceedException(); cpe.setRootCause(e); if (rest != null && rest.length > 0) { cpe.setRemainingName(CNNameParser.cosNameToName(rest)); } cpe.setEnvironment(ctx._env); if (debug) { System.out.println("rest of name: " + cpe.getRemainingName()); } // Lookup resolved name to get resolved object final java.lang.Object resolvedObj = (resolvedName != null) ? ctx.callResolve(resolvedName) : ctx; if (resolvedObj instanceof javax.naming.Context) { // obj is a context and child is not found // try getting its nns dynamically by constructing // a Reference containing obj. RefAddr addr = new RefAddr("nns") { public java.lang.Object getContent() { return resolvedObj; } private static final long serialVersionUID = 669984699392133792L; }; Reference ref = new Reference("java.lang.Object", addr); // Resolved name has trailing slash to indicate nns CompositeName cname = new CompositeName(); cname.add(""); // add trailing slash cpe.setResolvedObj(ref); cpe.setAltName(cname); cpe.setAltNameCtx((javax.naming.Context)resolvedObj); return cpe; } else { // Not a context, use object factory to transform object. Name cname = CNNameParser.cosNameToName(resolvedName); java.lang.Object resolvedObj2 = null; try { // Check whether object factory codebase is trusted if (CorbaUtils.isObjectFactoryTrusted(resolvedObj)) { resolvedObj2 = NamingManager.getObjectInstance(resolvedObj, cname, ctx, ctx._env); } } catch (NamingException ge) { throw ge; } catch (Exception ge) { NamingException ne = new NamingException( "problem generating object using object factory"); ne.setRootCause(ge); throw ne; } // If a context, continue operation with context if (resolvedObj2 instanceof javax.naming.Context) { cpe.setResolvedObj(resolvedObj2); } else { // Add trailing slash cname.add(""); cpe.setAltName(cname); // Create nns reference final java.lang.Object rf2 = resolvedObj2; RefAddr addr = new RefAddr("nns") { public java.lang.Object getContent() { return rf2; } private static final long serialVersionUID = -785132553978269772L; }; Reference ref = new Reference("java.lang.Object", addr); cpe.setResolvedObj(ref); cpe.setAltNameCtx(ctx); } return cpe; } } }