abstractdatabase.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id: AbstractDatabase.java,v 1.5 2003/11/07 21:34:21 per_nyfelt Exp $

package org.ozoneDB;

import org.ozoneDB.tools.OPP.OPP;

/**
	Implementation of methods common to subclasses.
	@author <a href="http://www.medium.net/">Medium.net</a>
*/
abstract class AbstractDatabase extends Object implements OzoneInterface {

	public final static int DefaultAccessRight = Public;

	public OzoneProxy createObject( String className ) throws RuntimeException, OzoneRemoteException {
		return createObject( className, DefaultAccessRight, null, null, null );
	}

	public OzoneProxy createObject( String className, int access ) throws RuntimeException, OzoneRemoteException {
		return createObject( className, access, null, null, null );
	}

	public OzoneProxy createObject( String className, int access, String objName ) throws RuntimeException,  OzoneRemoteException {
		return createObject( className, access, objName, null, null );
	}

	public OzoneProxy createObject( String className, String sig, Object[] args ) throws RuntimeException, OzoneRemoteException {
		return createObject(className,DefaultAccessRight,null,sig,args);
	}

	public OzoneProxy createObject(Class type) throws RuntimeException, OzoneRemoteException {
		return createObject(type.getName());
	}

	public OzoneProxy createObject(Class type, int access ) throws RuntimeException, OzoneRemoteException {
		return createObject(type.getName(), access);
	}

    public OzoneProxy createObject(Class type, int access, String objName ) throws RuntimeException, OzoneRemoteException {
		return createObject(type.getName(), access, objName);
	}

	public OzoneProxy createObject(Class type, int access, String objName, Class[] sig, Object[] args) throws RuntimeException, OzoneRemoteException {
		return createObject(type.getName(),access,objName, createSignature(sig),args);
	}

	public OzoneProxy createObject(Class type, Class[] sig, Object[] args ) throws RuntimeException, OzoneRemoteException {
		return createObject(type.getName(), createSignature(sig),args);
	}

    protected String createSignature(Class[] sig) {
        if (sig == null || sig.length == 0) {
            return null;
        }
        String signature = sig[0].getName();
        for (int i = 1; i < sig.length; i++) {
            signature = signature + OPP.SIGNATURE_DELIMITER + sig[i].getName();
        }
        return signature;
    }
}