BrokerAdapter.java

/*
 * Copyright (c) 2004-2011 Marco Maccaferri and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Marco Maccaferri - initial API and implementation
 */

package org.eclipsetrader.core.internal.trading;

import javax.xml.bind.annotation.adapters.XmlAdapter;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipsetrader.core.instruments.ISecurity;
import org.eclipsetrader.core.internal.CoreActivator;
import org.eclipsetrader.core.trading.BrokerException;
import org.eclipsetrader.core.trading.IAccount;
import org.eclipsetrader.core.trading.IBroker;
import org.eclipsetrader.core.trading.IOrder;
import org.eclipsetrader.core.trading.IOrderChangeListener;
import org.eclipsetrader.core.trading.IOrderMonitor;
import org.eclipsetrader.core.trading.IOrderRoute;
import org.eclipsetrader.core.trading.IOrderSide;
import org.eclipsetrader.core.trading.IOrderType;
import org.eclipsetrader.core.trading.IOrderValidity;
import org.eclipsetrader.core.trading.ITradingService;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;

public class BrokerAdapter extends XmlAdapter<String, IBroker> {

    public class FailsafeBroker implements IBroker {

        private String id;

        public FailsafeBroker(String id) {
            this.id = id;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getId()
         */
        @Override
        public String getId() {
            return id;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getName()
         */
        @Override
        public String getName() {
            return id;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#canTrade(org.eclipsetrader.core.instruments.ISecurity)
         */
        @Override
        public boolean canTrade(ISecurity security) {
            return false;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#connect()
         */
        @Override
        public void connect() {
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#disconnect()
         */
        @Override
        public void disconnect() {
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getAllowedSides()
         */
        @Override
        public IOrderSide[] getAllowedSides() {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getAllowedTypes()
         */
        @Override
        public IOrderType[] getAllowedTypes() {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getAllowedValidity()
         */
        @Override
        public IOrderValidity[] getAllowedValidity() {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getAllowedRoutes()
         */
        @Override
        public IOrderRoute[] getAllowedRoutes() {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getOrders()
         */
        @Override
        public IOrderMonitor[] getOrders() {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#prepareOrder(org.eclipsetrader.core.trading.IOrder)
         */
        @Override
        public IOrderMonitor prepareOrder(IOrder order) throws BrokerException {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getSecurityFromSymbol(java.lang.String)
         */
        @Override
        public ISecurity getSecurityFromSymbol(String symbol) {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getSymbolFromSecurity(org.eclipsetrader.core.instruments.ISecurity)
         */
        @Override
        public String getSymbolFromSecurity(ISecurity security) {
            return null;
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#addOrderChangeListener(org.eclipsetrader.core.trading.IOrderChangeListener)
         */
        @Override
        public void addOrderChangeListener(IOrderChangeListener listener) {
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#removeOrderChangeListener(org.eclipsetrader.core.trading.IOrderChangeListener)
         */
        @Override
        public void removeOrderChangeListener(IOrderChangeListener listener) {
        }

        /* (non-Javadoc)
         * @see org.eclipsetrader.core.trading.IBroker#getAccounts()
         */
        @Override
        public IAccount[] getAccounts() {
            return new IAccount[0];
        }
    }

    public BrokerAdapter() {
    }

    /* (non-Javadoc)
     * @see javax.xml.bind.annotation.adapters.XmlAdapter#marshal(java.lang.Object)
     */
    @Override
    public String marshal(IBroker v) throws Exception {
        return v != null ? v.getId() : null;
    }

    /* (non-Javadoc)
     * @see javax.xml.bind.annotation.adapters.XmlAdapter#unmarshal(java.lang.Object)
     */
    @Override
    public IBroker unmarshal(String v) throws Exception {
        if (v == null) {
            return null;
        }

        IBroker connector = null;
        try {
            BundleContext context = CoreActivator.getDefault().getBundle().getBundleContext();
            ServiceReference serviceReference = context.getServiceReference(ITradingService.class.getName());

            ITradingService tradingService = (ITradingService) context.getService(serviceReference);
            connector = tradingService.getBroker(v);

            context.ungetService(serviceReference);
        } catch (Exception e) {
            Status status = new Status(IStatus.ERROR, CoreActivator.PLUGIN_ID, 0, "Error reading feed service", e);
            CoreActivator.log(status);
        }

        if (connector == null) {
            Status status = new Status(IStatus.WARNING, CoreActivator.PLUGIN_ID, 0, "Failed to load broker " + v, null);
            CoreActivator.log(status);
            return new FailsafeBroker(v);
        }

        return connector;
    }
}