legacy application

The single-threaded nature of legacy application, like that just mentioned, is an example of a technical limitation of a legacy system.

An object-oriented legacy application or system should consist of a number of modules that expose a well-defined interface to its clients.

There are a set of industry-standard labor estimates for common automotive maintenance activities available through a legacy application.

At a large US bank, a Java team was asked to enhance a legacy application which had scant documentation.

External stored procedures are often used to access legacy data stores and legacy application systems.

They typically involve the service orientation of key software assets that are at the core of the enterprise (legacy application).

If you ve ever inherited and then had to maintain a Java-based legacy application, then this article is for you.

The other side of the wrapper -- the one that invokes and returns from the legacy application itself -- typically must be hand coded.

We created a service wrapper which uses the WebSphere MQ protocol to connect to that legacy application.

Now let's look at how this difficultly plays out in a realistic legacy application scenario.

Part 3 of this series also showed how a legacy application can be surfaced using a top-down approach.

Supports XML message exchange between the portal and the legacy application.

In addition, Terminal Server makes some adjustments to the registry for a legacy application.

For instance, you might add a FieldType to process a binary field from a legacy application that you are making searchable in Solr.

A legacy application code base represents a significant investment of time and money for a developer.

You can specify the type of service without customizing code for the Web service and without recompiling the legacy application.

A person logs on to a legacy application to find information to add to the customer request record before it can be processed.

Let's assume an enterprise legacy application (see Figure 1) is divided into modular components of business processes.

A service where a legacy application or service already exists.

So if the XML stream feeds a legacy application, you must deal with Unicode.

In order to connect to the legacy application using this wrapper, you need to add the specific transport and data transformation mechanisms.

Separate treatment for the various kinds of legacy application is outside the scope of this article.

To model a legacy application