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Design > Source Code Organization and Build System

Release Information

Project: PROJECTNAME
Internal Release Number: X.Y.Z
Related Documents:
LINKS TO RELEVANT STANDARDS
LINKS TO OTHER DOCUMENTS

Overview

TODO: Answer the questions below to help you define your source code organization and build process. Some example text is provided. Add or delete text as needed. E.g., not all projects try to be platform independent.
What are the most important facts that a developer should know about this source code organization and build system?
It roughly follows the standard proposed in the Tomcat documentation and is very similar to the organization used on many open source projects at the Apache Software Foundation.
What are the ranked goals of this source code organization and build system?
  1. Separation of files by type
  2. Separation of version-controlled files from files generated by the build process
  3. Compatibility with standard build processes
  4. Platform independence

Key Directories and Files in Developer Working Copies

TODO: Describe the purpose of each directory that will appear in a developer's work copy, also include any files that are important to the overall structure or build process.
PathVCDescription
build.xml Yes Build file
build.properties Yes Build properties file
src/ Yes Source code
src/java/ Yes Java source code
src/java/[Nested packages]/ Yes Java source code of classes in each package
src/java/[Nested packages]/test/ Yes Java source code of unit tests for classes in each package
web/ Yes HTML and JSP files
web/css/ Yes CSS files, if any
web/images/ Yes Image files, if any
web/WEB-INF/web.xml Yes Java web application configuration file
conf/ Yes Configuration files, if any
data/ Yes Initial data to load into database and/or file system, if any
lib/ Yes Libraries reused by this project, if any
scripts/ Yes Command-line utility scripts used by this project, if any
www/ Yes Project documents (e.g., overview, plan, requirements, and design)
build/ No Output of build process
build/WEB-INF/classes/ No Compiled code output by build process
dist/docs/api/ No API documentation output from build process
dist/PROJECTNAME-VERSION.war No Deployable web archive of classes and config files generated by build process

Build Targets

TODO: Describe the build targets that developers will use in daily development. The examples below should fit most projects.
TargetDescription
compile = default Compiles Java source code and creates .class files under the "build" directory.
dist Packages the system for distribution/deployment to servers or end users. Specifically, it creates .war archive of compiled classes and configuration files.
install Places executable code into location where it will actually be executed. Specifically, it copies .war file into Tomcat's webapps directory for use. You must then restart Tomcat or use the "reload" link in the Tomcat Manager.
javadoc Generates Java API documentation under "build/docs/api/".
clean Deletes files generated by previous build commands. Files under version control are not touched.

Build Configuration Options

PropertyDescription
app.name The name of this application. This should be one short word. Used in the name of resulting package files. Specifically, the .war file. And, it will be used to access the application via http://localhost:8080/APP.NAME/
app.version Version number of this release. Used in the name of resulting package files. Specifically, the .war file.
webapps.path Path to the Tomcat "webapps" directory. Defaults to C:\Program Files\Apache Group\Tomcat 4.1\webapps\

These build system properties can be modified by editing the build.properties file.

Source Code Organization and Build System Checklist

Separation of files by type: Are files separated by type?
Yes. Except that application JSP and HTML files are in the same directory, which is convenient because sometimes we change an HTML file to be a JSP file.
Separation of version-controlled and non-version controlled files: To what extent has this been achieved?
It has been achieved. Everything is under version control except for the "build" directory. No step in the build process should create or modify any file in any other directory.
Compatibility with standard build processes: To what extent has this been achieved?
So far, so good. We can use build.xml files that are very close to the examples that come with Ant. One difference is that we keep our technical documentation under "www" rather than under "docs". Also, we have avoided the use of custom ant tasks.
Platform independence: To what extent has this been achieved?
We are using Ant, which is itself platform independent. The names of the files and directories should work across platforms because they do not rely on case-sensitive names. We assume that the utility scripts in the "scripts" directory support all needed platforms and we have not created directories for different versions of these files aimed at specific platforms.
Have these implementation decisions been communicated to the development team and other stakeholders?
Yes, everyone understands. Feedback is welcome.
No, this is a risk that is noted in the Risk Management section.

TODO: Check for words of wisdom and discuss ways to improve this template. Or, evaluate the ReadySET Pro professional source code organization template.

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Copyright © 2003-2004 Jason Robbins. All rights reserved. License terms. Retain this copyright statement whenever this file is used as a template.