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This manual will give you a walk-through on how to use the HTTP web services.

 

Introduction

 

HTTP Service is the most lightweight and unrestricted remote service: it supports POST and GET requests to a predefined URL. Result is retrieved as is and rendered as a webpage.

 

Examples

 

Example #1

 

This example will show how to call chemicalize.com via an HTTP web service. In this case we want to calculate the pKvalues of a molecule.


Fig. 1 HTTP service calling the pKcalculator of chemicalize.org

 

An example calculation with this webservice can be found below.


Fig. 2 Result of the pKcalculation via the webservice calling chemicalize.org


Example #2

 

This example shows how to reach the functionalities of chemicalize.com via HTTP API.

    HTTPServiceDescriptor descriptor = new HTTPServiceDescriptor();
    descriptor.setURL("https://chemicalize.com/tomcat-files/datapage.jsp");
    
    descriptor.addArgument(ServiceArgument.createArgument("mol", ""));
    descriptor.addArgument(ServiceArgument.createArgument("special", ""));
    descriptor.addArgument(ServiceArgument.createArgument("pka_width", 0));

    Object result = null;
    try {
        result = descriptor.getServiceHandler().callService(descriptor, "c1ccnccc1", "pka", 300);
    } catch (ServiceException e) {
       System.err.println("Service call failed.");
    }
    System.out.println("Synchronized call returned: " + String.valueOf(result));

    
    descriptor.getServiceHandler().callService(descriptor, new AsyncCallback<String>() {

        @Override
        public void onSuccess(String result) {
            System.out.println("Aynchronous call returned: " + result);
        }

        @Override
        public void onFailure(ServiceException caught) {
            System.err.println("Asynchronous call failed.");
        }
        
    }, "c1ccnccc1", "pka", 300);