repositoryid.java

java1.6众多例子参考

	    if (repId.startsWith(kIDLPrefix)) {
		typeString =
		    repId.substring(kIDLPrefixLength, repId.indexOf(':', kIDLPrefixLength));
		isIDLType = true;

		if (typeString.startsWith(kIDLNamePrefix))
		    completeClassName = kIDLClassnamePrefix + 
			typeString.substring(kIDLNamePrefix.length()).replace('/','.');
		else 
		    completeClassName = typeString.replace('/','.');

	    } else if (repId.startsWith(kValuePrefix)) {
		typeString =
		    repId.substring(kValuePrefixLength, repId.indexOf(':', kValuePrefixLength));
		isRMIValueType = true;

		if (versionString.indexOf('.') == -1) {
		    actualSuid = versionString.substring(1);
		    suid = actualSuid;  // default if not explicitly specified
				
		    if (actualSuid.indexOf(':') != -1){
		    // we have a declared hash also
			int pos = actualSuid.indexOf(':')+1;
			// actualSuid = suid.substring(pos);
			// suid = suid.substring(0, pos-1);
			suid = actualSuid.substring(pos);
			actualSuid = actualSuid.substring(0, pos-1);
		    }
		} else {
		    // _REVISIT_ : Special case version failure ?
		}
	    } else {
		isSupportedFormat = false;
		typeString = "" ;
	    }

	    if (typeString.startsWith(kSequencePrefix)) {
		isSequence = true;
	    }
		
	    return this;
	}
    }

    public final String getUnqualifiedName() {
	if (unqualifiedName == null){
	    String className = getClassName();
	    int index = className.lastIndexOf('.');
	    if (index == -1){
		unqualifiedName = className;
		definedInId = "IDL::1.0";
	    }
	    else {
		unqualifiedName = className.substring(index);
		definedInId = "IDL:" + className.substring(0, index).replace('.','/') + ":1.0";
	    }
	}
		
	return unqualifiedName;
    }

    public final String getDefinedInId() {
	if (definedInId == null){
	    getUnqualifiedName();
	}
		
	return definedInId;
    }

    public final String getTypeString() {
        return typeString;
    }

    public final String getVersionString() {
        return versionString;
    }
	
    public final String getSerialVersionUID() {
	return suid;
    }

    public final String getActualSerialVersionUID() {
	return actualSuid;
    }
    public final long getSerialVersionUIDAsLong() {
	return suidLong;
    }

    public final long getActualSerialVersionUIDAsLong() {
	return actualSuidLong;
    }

    public final boolean isRMIValueType() {
	return isRMIValueType;
    }
	
    public final boolean isIDLType() {
	return isIDLType;
    }

    public final String getRepositoryId() {
        return repId;
    }

    public static byte[] getByteArray(String repStr) {
	synchronized (repStrToByteArray){
	    return (byte[]) repStrToByteArray.get(repStr);
	}
    }

    public static void setByteArray(String repStr, byte[] repStrBytes) {
	synchronized (repStrToByteArray){
	    repStrToByteArray.put(repStr, repStrBytes);
	}
    }

    public final boolean isSequence() {
        return isSequence;
    }

    public final boolean isSupportedFormat() {
        return isSupportedFormat;
    }

	
    // This method will return the classname from the typestring OR if the classname turns out to be
    // a special class "pseudo" name, then the matching real classname is returned.
    public final String getClassName() {

	if (isRMIValueType)
	    return typeString;
	else if (isIDLType)
	    return completeClassName;
	else return null;

    }

    // This method calls getClazzFromType() and falls back to the repStrToClass
    // cache if no class was found.  It's used where any class matching the
    // given repid is an acceptable result.
    public final Class getAnyClassFromType() throws ClassNotFoundException {
        try {
	    return getClassFromType();
	} catch (ClassNotFoundException cnfe) {
	    Class clz = (Class)repStrToClass.get(repId);
	    if (clz != null)
		return clz;
	    else
		throw cnfe;
	}
    }

    public final Class getClassFromType()
        throws ClassNotFoundException {
	if (clazz != null)
	    return clazz;
		
	Class specialCase = (Class)kSpecialCasesClasses.get(getClassName());

	if (specialCase != null){
	    clazz = specialCase;
	    return specialCase;
	}
	else
	    {
		try{
		    return Util.loadClass(getClassName(), null, null);
		}
		catch(ClassNotFoundException cnfe){
		    if (defaultServerURL != null) {
			try{
			    return getClassFromType(defaultServerURL);
			}
			catch(MalformedURLException mue){
			    throw cnfe;
			}
		    }
		    else throw cnfe;
		}
	    }

    }

    public final Class getClassFromType(Class expectedType, String codebase)
        throws ClassNotFoundException {
	if (clazz != null)
	    return clazz;
		
	Class specialCase = (Class)kSpecialCasesClasses.get(getClassName());

	if (specialCase != null){
	    clazz = specialCase;
	    return specialCase;
	} else {
            ClassLoader expectedTypeClassLoader = (expectedType == null ? null : expectedType.getClassLoader());
            return Utility.loadClassOfType(getClassName(),
                                            codebase,
                                            expectedTypeClassLoader,
                                            expectedType,
                                            expectedTypeClassLoader);
        }

    }

    public final Class getClassFromType(String url) 
	throws ClassNotFoundException, MalformedURLException {
	return Util.loadClass(getClassName(), url, null);
    }

    public final String toString() {
    	return repId;
    }

    /**
     * Checks to see if the FullValueDescription should be retrieved.
     * @exception Throws IOException if suids do not match or if the repositoryID
     * is not an RMIValueType
     */
    public static boolean useFullValueDescription(Class clazz, String repositoryID)
	throws IOException{

	String clazzRepIDStr = createForAnyType(clazz);

	if (clazzRepIDStr.equals(repositoryID))
	    return false;

	RepositoryId targetRepid;
	RepositoryId clazzRepid;

	synchronized(cache) {
	// to avoid race condition where multiple threads could be
	// accessing this method, and their access to the cache may
	// be interleaved giving unexpected results

	    targetRepid = cache.getId(repositoryID);
	    clazzRepid = cache.getId(clazzRepIDStr);
	}
	//ObjectStreamClass osc = ObjectStreamClass.lookup(clazz);
		
	if ((targetRepid.isRMIValueType()) && (clazzRepid.isRMIValueType())){
	    if (!targetRepid.getSerialVersionUID().equals(clazzRepid.getSerialVersionUID())) {

		String mssg = "Mismatched serialization UIDs : Source (Rep. ID" + 
		    clazzRepid + ") = " + 
		    clazzRepid.getSerialVersionUID() + " whereas Target (Rep. ID " + repositoryID + 
		    ") = " + targetRepid.getSerialVersionUID();
				//com.sun.corba.se.impl.io.ValueUtility.log("RepositoryId",mssg);
		throw new IOException(mssg);
	}
	    else {
		return true;
	    }		
	}
	else {

	    throw new IOException("The repository ID is not of an RMI value type (Expected ID = " + clazzRepIDStr + "; Received ID = " + repositoryID +")");
    }
    }

    private static String createHashString(java.io.Serializable ser) {

	return createHashString(ser.getClass());
    }

    private static String createHashString(java.lang.Class clazz) {

	if (clazz.isInterface() || !java.io.Serializable.class.isAssignableFrom(clazz))
	    return kInterfaceHashCode;

	//ObjectStreamClass osc = ObjectStreamClass.lookup(clazz);

	long actualLong = ObjectStreamClass.getActualSerialVersionUID(clazz);
	String hash = null;
	if (actualLong == 0)
	    hash = kInterfaceOnlyHashStr;
	else if (actualLong == 1)
	    hash = kExternalizableHashStr;
	else
	    hash = Long.toHexString(actualLong).toUpperCase();
	while(hash.length() < 16){
	    hash = "0" + hash;
	}

	long declaredLong = ObjectStreamClass.getSerialVersionUID(clazz);
	String declared = null;
	if (declaredLong == 0)
	    declared = kInterfaceOnlyHashStr;
	else if (declaredLong == 1)
	    declared = kExternalizableHashStr;
	else
	    declared = Long.toHexString(declaredLong).toUpperCase();
	while (declared.length() < 16){
	    declared = "0" + declared;
    }
	hash = hash + ":" + declared;

	return ":" + hash;
    }

    /**
     * Creates a repository ID for a sequence.  This is for expert users only as
     * this method assumes the object passed is an array.  If passed an object 
     * that is not an array, it will produce a rep id for a sequence of zero 
     * length.  This would be an error.
     * @param ser The Java object to create a repository ID for
     **/
    public static String createSequenceRepID(java.lang.Object ser){
	return createSequenceRepID(ser.getClass());
    }

    /**
     * Creates a repository ID for a sequence.  This is for expert users only as
     * this method assumes the object passed is an array.  If passed an object 
     * that is not an array, it will produce a malformed rep id.
     * @param clazz The Java class to create a repository ID for
     **/
    public static String createSequenceRepID(java.lang.Class clazz){
	synchronized (classSeqToRepStr){
		
        String repid = (String)classSeqToRepStr.get(clazz);
	if (repid != null)
	    return repid;

	Class originalClazz = clazz;

        Class type = null;
	int numOfDims = 0;