instantiator.java

JXTA&#8482 is a set of open, generalized peer-to-peer (P2P) protocols that allow any networked devi

        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 = 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;
    }
}