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Questions tagged [legacy]

A legacy system is an old application, technology, mainframe, method, etc., still having an influence on an organization.

A legacy system is an old application, technology, mainframe, method, etc. that may or may not remain in active use, while still having a certain influence on an organization.

On one hand, maintenance of legacy systems and their integration with new solutions can be time consuming, particularly when a vendor's support is no longer available. On the other hand, legacy systems tend to be well-understood and thoroughly tested in production environments over the years since their deployment.

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database design for new system but legacy dependency

We are planing to make a new project (complete relaunch) of a web application in PHP (Symfony 2) and PostgreSQL. Currently we use PHP and MySQL (MyISAM). -> webapp The current and new webapp depends on another system (.NET) including a database (MS…
timaschew
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String literals are created with prefix NULL (0)

Background: I'm working on a legacy code of a web application and I'm currently converting some of the ASCII parts of the code to UNICODE. I've run in to the following bug in the logger. it seems that string literals are either created or for some…
qballer
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Saw a strange if statement in some legacy C code

What I saw in an if statement was like this. if((var = someFunc()) == 0){ ... } Will the statement (var = someFunc()) always return the final value of var no matter what environment we are in?
Boumbles
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How do I get a Rails 1.2.6 to automatically load code from app/*

I have a Rails 1.2.6 application and I would like to be able to create a folder in app/ and have its contents loaded. This is the behaviour of Rails 3. How can I achieve the same thing in Rails 1.2.6?
Nerian
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javax.comm in JDK 1.4.2

I've come across a legacy project which uses Java 1.4.2. The project contains references to javax.comm for serial port communications. I'm now trying to run this on java 7, and find that javax.comm is not included as part of the JDK. What I can't…
jasg
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How can I represent the current date and time to the nearest second in 8 characters?

I'm integrating to a legacy application that produces data files where the maximum file name size is 8 characters. I can control the name and I'd like to be able to base it on the current date and time, to the nearest second. It must be unique. Has…
Chris
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Alternative to clipboard for sharing data between a web based application and legacy desktop application

I've been pondering over this problem most the afternoon and haven't yet found the most ideal solution so thought I would see what others think.. There is a legacy Win16 application that has to be modified (with the least effort) in order to…
David Brown
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adding adorners to legacy textboxes

Whats the best way to add an adornment layer to legacy controls, or in other words you know jetbrains refactoring tools, how do they draw the squiggly lines under incorrect text? Also on another note can one draw said adorments on controls not…
almog.ori
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VB6 ADO connection issue, Jet aborts even though no connection is active

I'm maintaining a legacy VB6 application that uses Access as DB. With a certain client I'm getting weird errors when manipulating data. I get this error: 2012-08-23 17:04:49 The Microsoft Jet database engine stopped the process because you and…
Phil
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Call function after update auth_user

I have a question about how could I update a legacy table after an update in the auth_user table. I would like to do some changes in other tables just after the "admin" changes the data of one of the users. Is there a way to call a function when…
blfuentes
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OSGi logging from legacy apps?

Let's say I have four legacy jars: my-library.jar my-app.jar my-other-app.jar log4j.jar "My App" and "My Other App" are unrelated applications, both with main() functions. They both use various library functions from "my-library-app". All three…
user1582873
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OSGi and legacy applications

I would like to use the Config Admin service to manage configuration for my services. Since I'm just starting to use OSGi, I would like to introduce it step by step. So, I would like to keep some of my applications as they are now, without executing…
manash
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Visually Export MySQL Data to Different Schema

I'm updating a legacy Rails application as well as its old database. The new app follows a slightly different schema and naming convention, as well as has different relationship types. I need to export the data from the old DB and map it to the…
Kyle Macey
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Need to append data in a database column

I'm working on an old legacy system. It breaks all kinds of rules from normalization to common sense, but alas I'm stuck with it. That being said here it goes. Question: How would I append a name to a field without getting rid of the existing…
k to the z
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Getting Access to Products No Longer Available From Microsoft

As a consequence of a legal settlement with Sun regarding the Java technology, Microsoft has removed certain products from being available directly from them through any means. Here is an excerpt from their MSDN…
LBushkin
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