gov.nih.nci.ccts.grid.service.LabConsumerServiceImpl.java Source code

Introduction

Here is the source code for gov.nih.nci.ccts.grid.service.LabConsumerServiceImpl.java

Source

/*
 * Copyright Northwestern University and SemanticBits, LLC
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/ctms-commons/LICENSE.txt for details.
 */
package gov.nih.nci.ccts.grid.service;

import gov.nih.nci.ccts.grid.common.LabConsumerServiceI;

import java.rmi.RemoteException;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.xml.rpc.handler.soap.SOAPMessageContext;

import org.apache.axis.MessageContext;
import org.apache.axis.transport.http.HTTPConstants;
import org.globus.wsrf.config.ContainerConfig;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 * TODO:I am the service side implementation class. IMPLEMENT AND DOCUMENT ME
 * 
 * @created by Introduce Toolkit version 1.2
 * 
 */
public class LabConsumerServiceImpl extends LabConsumerServiceImplBase {

    private static final String SPRING_CLASSPATH_EXPRESSION = "springClasspathExpression";

    private static final String DEFAULT_SPRING_CLASSPATH_EXPRESSION = "classpath:applicationContext-lab.xml";

    private static final String LAB_CONSUMER_BEAN_NAME = "labConsumerBeanName";

    private static final String DEFAULT_LAB_CONSUMER_BEAN_NAME = "labConsumer";

    private LabConsumerServiceI consumer;

    public LabConsumerServiceImpl() throws RemoteException {
        super();
    }

    public gov.nih.nci.cabig.ccts.domain.loadlabs.Acknowledgement loadLabs(
            gov.nih.nci.cabig.ccts.domain.loadlabs.LoadLabsRequest loadLabsRequest) throws RemoteException {
        initialize();
        return consumer.loadLabs(loadLabsRequest);
    }

    /**
     * Will try to locate a pre-existent {@link ApplicationContext}; if failed,
     * will create it explicitly.
     * 
     * @see http://jira.semanticbits.com/browse/CAAERS-4291
     */
    private synchronized void initialize() {
        if (this.consumer == null) {
            ApplicationContext ctx = null;
            String exp = ContainerConfig.getConfig().getOption(SPRING_CLASSPATH_EXPRESSION,
                    DEFAULT_SPRING_CLASSPATH_EXPRESSION);
            String bean = ContainerConfig.getConfig().getOption(LAB_CONSUMER_BEAN_NAME,
                    DEFAULT_LAB_CONSUMER_BEAN_NAME);

            // see http://jira.semanticbits.com/browse/CAAERS-4291
            // let's see if ApplicationContext is already available as a
            // WebApplicationContext
            // if so, use it; otherwise, fall back to standard approach for
            // backward compatibility.
            SOAPMessageContext messageContext = MessageContext.getCurrentContext();
            if (messageContext != null) {
                HttpServlet srv = (HttpServlet) messageContext.getProperty(HTTPConstants.MC_HTTP_SERVLET);
                if (srv != null) {
                    ServletContext servletContext = srv.getServletContext();
                    ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);
                }
            }

            if (ctx == null) {
                System.out.println(
                        "LabConsumerServiceImpl: unable to find pre-existing spring context in servlet context; falling back to direct context creation.");
                System.out.println("LabConsumerServiceImpl: Creating spring context explicitly...");
                ctx = new ClassPathXmlApplicationContext(exp);

            }

            if (ctx != null)
                this.consumer = (LabConsumerServiceI) ctx.getBean(bean);

        }
    }

}