instantiator.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new CodatID( peerGroupID, in );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.codat.CodatID newCodatID( net.jxta.peergroup.PeerGroupID groupID, byte [] seed, InputStream in ) throws IOException {
        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new CodatID( peerGroupID, seed, in );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peergroup.PeerGroupID newPeerGroupID( ) {
        return new PeerGroupID( );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peergroup.PeerGroupID newPeerGroupID( byte [] seed ) {
        return new PeerGroupID( seed );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peergroup.PeerGroupID newPeerGroupID( net.jxta.peergroup.PeerGroupID parent ) {
        PeerGroupID  parentGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( parent );
        
        return new PeerGroupID( parentGroupID );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peergroup.PeerGroupID newPeerGroupID( net.jxta.peergroup.PeerGroupID parent, byte [] seed ) {
        PeerGroupID  parentGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( parent );
        
        return new PeerGroupID( parentGroupID, seed );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peer.PeerID newPeerID( net.jxta.peergroup.PeerGroupID groupID ) {
        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new PeerID( peerGroupID );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.peer.PeerID newPeerID( net.jxta.peergroup.PeerGroupID groupID, byte [] seed  ) {
        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new PeerID( peerGroupID, seed );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.pipe.PipeID newPipeID( net.jxta.peergroup.PeerGroupID groupID ) {
        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new PipeID( peerGroupID );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.pipe.PipeID newPipeID( net.jxta.peergroup.PeerGroupID groupID, byte [] seed ) {
        PeerGroupID  peerGroupID = (PeerGroupID) IDFormat.translateFromWellKnown( groupID );
        
        return new PipeID( peerGroupID, seed );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.platform.ModuleClassID newModuleClassID( ) {
        return new ModuleClassID( );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.platform.ModuleClassID newModuleClassID( net.jxta.platform.ModuleClassID classID ) {
        return new ModuleClassID( (ModuleClassID) classID );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.platform.ModuleSpecID newModuleSpecID( net.jxta.platform.ModuleClassID classID ) {
        return new ModuleSpecID( (ModuleClassID) classID );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.id.ID fromURI( URI source ) throws URISyntaxException {
        
        // check the protocol
        if ( !net.jxta.id.ID.URIEncodingName.equalsIgnoreCase(source.getScheme()) ) {
            throw new URISyntaxException( source.toString(), "URI scheme was not as expected." );
        }
        
        String decoded = source.getSchemeSpecificPart();
        
        int colonAt = decoded.indexOf( ':' );
        
        // There's a colon right?
        if( -1 == colonAt ) {
            throw new URISyntaxException( source.toString(), "URN namespace was missing." );
        }
        
        // check the namespace
        if ( !net.jxta.id.ID.URNNamespace.equalsIgnoreCase(decoded.substring( 0, colonAt )) ) {
            throw new URISyntaxException( source.toString(), "URN namespace was not as expected. (" +
                    net.jxta.id.ID.URNNamespace + "!=" + decoded.substring( 0, colonAt ) + ")" );
        }
        
        // skip the namespace portion and the colon
        decoded = decoded.substring( colonAt + 1 );
        
        return fromURNNamespaceSpecificPart( decoded );
    }
    
    /**
     * {@inheritDoc}
     **/
    public net.jxta.id.ID fromURNNamespaceSpecificPart( String source ) throws URISyntaxException {
        int dashAt = source.indexOf( '-' );
        
        // there's a dash, right?
        if( -1 == dashAt ) {
            throw new URISyntaxException( source, "URN Encodingtype was missing." );
        }
        
        if( !source.substring( 0, dashAt).equals( getSupportedIDFormat() ) ) {
            throw new URISyntaxException( source, "JXTA ID Format was not as expected." );
        }
        
        // skip the dash
        source = source.substring( dashAt + 1 );
        
        // check that the length is even
        if( 0 != (source.length() % 2) ) {
            throw new URISyntaxException( source, "URN contains an odd number of chars" );
        }
        
        // check that the length is long enough
        if( source.length() < 2 ) {
            throw new URISyntaxException( source, "URN does not contain enough chars" );
        }
        
        // check that id is short enough
        if( IDFormat.IdByteArraySize < (source.length() % 2) ) {
            throw new URISyntaxException( source, "URN contains too many chars" );
        }
        
        net.jxta.id.ID result = null;
        IDBytes id = new IDBytes();
        
        try {
            // do the primary portion.
            for( int eachByte = 0; eachByte < ((source.length() / 2) - IDFormat.flagsSize ); eachByte++ ) {
                int index = eachByte * 2;
                String twoChars = source.substring( index, index + 2 );
                id.bytes[eachByte] = (byte) Integer.parseInt( twoChars, 16 );
            }
            
            // do the flags
            for( int eachByte = IDFormat.flagsOffset; eachByte < IDFormat.IdByteArraySize; eachByte++ ) {
                int index = source.length() - (IDFormat.IdByteArraySize - eachByte) * 2;
                String twoChars = source.substring( index, index + 2 );
                id.bytes[eachByte] = (byte) Integer.parseInt( twoChars, 16 );
            }
        } catch( NumberFormatException caught ) {
            throw new URISyntaxException( source, "Invalid Character in JXTA URI" );
        }
        
        switch( id.bytes[IDFormat.flagsOffset + IDFormat.flagsIdTypeOffset] ) {
            case IDFormat.flagCodatID :
                result = new CodatID(id);
                break;
            case IDFormat.flagPeerGroupID :
                result = new PeerGroupID(id);
                result = (PeerGroupID) IDFormat.translateToWellKnown( result );
                break;
            case IDFormat.flagPeerID :
                result = new PeerID(id);
                break;
            case IDFormat.flagPipeID :
                result = new PipeID(id);
                break;
            case IDFormat.flagModuleClassID :
                result = new ModuleClassID(id);
                break;
            case IDFormat.flagModuleSpecID :
                result = new ModuleSpecID(id);
                break;
            default :
                throw new URISyntaxException( source, "JXTA ID Type not recognized" );
        }
        
        return result;
    }
}