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A UML Sequence Diagram showing Signal and Slot. You can edit this UML Sequence Diagram using Creately diagramming tool and include in your report/presentation/website. 9.3.3 Signals and Slots. When the main thread of a C program calls qApp-exec, it enters into an event loop, where messages are handled and dispatched. While qApp is executing its event loop, it is possible for QObjects to send messages to one another. A signal is a message that is presented in a class definition like a void function.

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gategeneralization (classifiers)generalization (use cases)generalization set

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Do round trip code generation for UML

xmi2code website

Overview

xmi2code provides a program for round trip code generation for xmi files. It consists mainly of three parts:

Handler:	xmi reader specialized for xmi sources
Model:	xmi independent representation of the UML data
Generator:	a set of specialized generators ( e.g. c++, php )

Features are:

Round Trip Generation:	Generators provide incremental code generation. That means: if a class has changes, just generate again over the sources. xmi2code will not remove your coding, instead it will add, delete or change Functions and Attributes
Tags in Diagrams:	Some extra tags can be added in the UML definitions. For example a constructor init list could be provided in the diagrams!
Access functions:	Automatic access functions for class attributes, if you want.
Ctor init list:	Automatic, overrideable constructor init list generation
Qt Support:	Support of Signal/Slots Q Object technique
Workaround for Umbrello:	Help for Umbrello with missing virtual, const and inline settings
Expandable	Easily expandable for new handlers and generators

Umbrello Homepage

Command Line

usage: xmi2code [<command line options>] [target(s)]

-a	Process all targets in project
-c	config-file	Use given configuration file. Default: xmi2code.config.
-d	Dump all options before processing.
-f	xmi-file	Use given file as xmi-input.
-g	generator	Specify generator.(ada,cpp,php,php.pear,pro)
-h	handler	Specify handler. Default: umbrello
--help	Show short help and exit.
-o	key=value	Set option key to value.
-v	Show version and exit.
-x	Stream out current option data for a config file and exit

Installation

xmi2code is just a simple program. No Installation ist required.

Options

xmi2code support some options and it is possible to create user defined options.

xmi2code General Options

Key	Description	Default value
target	Target(s) for generation. At this time this could be '*' or one or more class names.	'
xmi-input	File name of the xmi file which should be parsed.	'
config-file	File name of the configuration file which should be used.	'xmi2code.config'

Configuration File

xmi2code can be configured with a configuration file. The format is xml. There are three tags:

xmi2code:	is the root tag, nothing else.
option:	here you can set a option with the attributes: 'key' and 'value'.
if:	conditional tag. It has the attribute 'test' where you can specify a condition. If the condition is true the tree under 'if' is evaluated. If the condition is false the tree under 'if' is ignored. The only supported condition is key=value to test the value of options. If tags can be nested: option and if tag als children are allowed.

xmi2code looks for a default configuration file: xmi2code.config in the current working directory. You could override this in the command line.

Order Of Option Reading

There are three steps for reading the options:

Default values:	First some default values are evaluated.
Configuration file:	Then the values of the configuration file will be set
Command line:	At last, the values from the command line will override the options

Handlers

xmi2code generally supports different handlers for xmi files. At this time only one handler is available: Umbrello.

Key	Description	Default value
handler	Selection of the handler that should be used.	'umbrello'

Handler: Umbrello

Code for options: 'umbrello'

Type coded features

Umbrello handler supports some missing features of umbrello. They are coded in the type of operations by putting the key words before the type, separated by a colon.

Virtual Functions:	Virtual functions can be declared with 'virtual'
Const Functions:	Const functions can be declared with 'const'
Inline Functions:	Inline functions can be declared with 'inline'
Signals:	Qt Signals can be declared with 'signal'
Slots:	Qt Slots can be declared with 'slot'

Example:

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Example:
Example:

Documenation coded features

This handler supports some addional features. They are coded in the documentation of objects ( class, operation, attributes, associations ). A coded line in a documentation begins with 'x2c:'. Here the list of the features:

Command	Description	Example
external extern	Scope:Class Mark a class a external, that means, this class is not member of the project.	x2c:external
noclass noc	Scope:Class Mark a class as a container of functions. This feature is limited to generators of languages that can define functions without a class.	x2c:noclass
include: inc:	Scope:Class Parameter:include file name Use the given include file name, if a include for this class is necessary.	x2c:inc:qxml.h
define: def:	Scope:Class Parameter:code Write the code in the class scope: For example, if want to define a enum in the class.	x2c:def:enum ABC {a,b,c};
cit:	Scope:Operation Parameter:Attribute Baseclass=value Write an entry into the constructor initialization list. Note that the c++ Generator writes all default values to the init list. But here you can override them, or use a base class constructor.	x2c:cit:mPI=3.14;
set	Scope:Attribute Add a set function for the attribute. How to do this, is task of the generator.Can be combined with 'get'	x2c:set get
get	Scope:Attribute Add a get function for the attribute. How to do this, is task of the generator.Can be combined with 'set'	x2c:get
primary	Scope:Assocation (inheritance) This inheritance should be at first in the class definition.	x2c:primary
public	Scope:Assocation (inheritance) Inheritance is public	x2c:public
protected	Scope:Assocation (inheritance) Inheritance is protected	x2c:protected
private	Scope:Assocation (inheritance) Inheritance is private	x2c:private
virtual	Scope:Assocation (inheritance) Inheritance is virtual	x2c:virtual

Generators

Common Generator Options

Here are options that most generators use:

Key	Description	Default value
generator	The value of this option selects the code generator which will be invoked.	'
template-path	Points to the template file directory.	'templates'
generator-path	Directory where the generators expect/create the source files.	'generated'
use-package-as-dir	xmi2code supports a source tree where UML-packages are directories and classes are files in these directories. true enables this.	'true'
indent	Indentation to be used. Default is 2 (two) spaces.	' '
files-case	Generated file and directory name case. Can be 'lower', 'upper'. Any different value will not change the case.	'lower'

Source Tags

xmi2code uses tags in the source file for the round trip code generation. These are:

+x2c	This is the start tag. From here to the end tag is xmi2code maintained code. All user changes between will be lost with the next code generation.
~x2c	This is the end tag.
-x2c	This is a tag for only one line.

Do not manipulate the tags! if you delete or duplicate tags the code generator will tumble!

templates

Template files will be invoked if the generators create new files. You can use all options as Variables in the template. Just add two '@' before the option name.

Some options are effective at template invocation time:

filename	The current file name
package	The package of the current class
class	The name of the current class
date	A current timestamp

Feel free to modify the template as you like. If you use the default templates, set 'project', 'author', 'email' and 'system-base-include'.

Generator: Ada Generator

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Code for options: 'ada'

This is a code generator for Ada.

Special Features:

Reserved	Explanation for Reserved.

Here are special options for this generator:

Key	Description	Default value
ada.template	Which template file generator use for new files.	'ada'
ada.extension	Which extension the files should have.	'ads'
ada.default-code	Default code for new operations so the user does not forget to implement the operation.	'not implemented'

Generator: C++ Generator

Code for options: 'cpp'

This is an code generator for c++.

Features:

Ctor init list	The generator will generate automatic ctor init lists for attributes, which have default values. Inits for base classes and value overrides are supported. See used handler for how to set.
Access functions	The generator can create access functions for attribute on request. Therefor the name of attributes are taken, and the first lower letters are cut. Get-Function will be: get<cutted attribute name>. For bool values is <cutted attribute name> will be used. Set-Functions will be: set<cutted attribute name>. A limit of automatic access functions is reached with pointers. Please design your own access functions for pointers and decide const arguments and/or returns.
Q_OBJECT	If any Qt Signal or Slot is detected in the class, the generator will add Q_OBJECT in the class definition.
Class Scope Definitions	Class Scope Definition are possible, for example to make a class scope typedef. See used handler for how to set.
static,virtual,const,inline	Static,virtual(also pure virtual),const and inline functions are supported: See used handler for how to set.
static attributes	Static attribute, with or without default value, are supported.
Inheritance	Multiple inheritance is supported. Usage of external classes also with nonstandard file name is supported. For Qt, or better moc, the flag 'primary' on inheritances is supported. To be sure, that Q_Object class are first in the inheritance list. Visibilities ( public,protected,private ) for inheritances are possible. Virtual inheritance is also supported. See used handler for how to set.
abstract functions	If you set a function 'abstract' but not virtual, the generator will not generator a body for this function. Benefit: you can for example set private copy ctor and the assign operator abstract if you not to provide code for this forbidden functions.

But the generator is not complete: templates are not supported now.

Here are special options for this generator:

Key	Description	Default value
cpp.h-template	Template file for .h (header) files.	'cpp.h'
cpp.cpp-template	Template file for .cpp (implementation) files.	'cpp.cpp'
cpp.default-code	Code, that will be used in first written functions. To be sure, that they will be coded.	'#error not implemented.'

Generator: PHP Generator

Code for options: 'php'

This is an code generator for php.

Special Features:

References	The PHP generator supports both, parameter and function references. Just be sure to have an '&' in the type.

Here are special options for this generator:

Key	Description	Default value
php.template	Which template file generator use for new files.	'php'
php.extension	Which extension the files should have.	'php'
php.default-code	Default code for new operations. To be sure not to forget to code this function.	'not implemented'

Generator: PHP PEAR Generator

Code for options: 'php.pear'

This is a code generator for PEAR style php code. Please check http://pear.php.net/manual/en/standards.php to see what this means.

Special Features:

Access functions	The PHP PEAR generator supports automatic attribute access functions, just like C++ generator. Functions for geting an attribute are prefixed with 'get' and then the attribute name with the first letter uppercased (example: myAttribute: getMyAttribute()). Functions for setting the attributes are prefixed with 'set'. To add autofunctions to an attribute just add a line in the attribute documentation with 'x2c:get', x2c:set' or simply 'x2c:get set' if you want both (see Umbrello Handler options for more info). If you want to get or set your attributes as references, just prepend '&' to the attribute type (example: &MyAttributeClass).

Access functions

The PHP PEAR generator supports automatic attribute access functions, just like C++ generator. Functions for geting an attribute are prefixed with 'get' and then the attribute name with the first letter uppercased (example: myAttribute: getMyAttribute()). Functions for setting the attributes are prefixed with 'set'. To add autofunctions to an attribute just add a line in the attribute documentation with 'x2c:get', x2c:set' or simply 'x2c:get set' if you want both (see Umbrello Handler options for more info). If you want to get or set your attributes as references, just prepend '&' to the attribute type (example: &MyAttributeClass).

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This generator also have special features from PHP Generator.

TODO:

More Class PHPDoc Comments	Now the class comment is lacking of @package, @author, @date, and maybe something else?
Better use of packages	Think about problems in having Package_Class as class name (method parameters and return type, and class attributes must have Package preapended, so I don't know if this is really useful).

Key	Description	Default value
php.pear.use-package-in-classnames	Prepend the Package name in the classnames (like MyPackage_MyClass). This is a half done work, since the package name is only appended in the class definition (like class MyPackage_MySubClass extends MyPackage_MyClass), but not in parameters documentation, etc. (anything different to 'true' it's evaluated to false). You can use '/' in packages to add more directory levels, like package 'My/Package', this will be translated to underscores in class name, like 'My_Package_MyClass'.	'false'
php.pear.underscore-in-nonpublic	Prepends an underscore ('_') to the methods and attributes names that are non public (ie, private or protected).	'true'

Generator: QMake Generator for Classes

Code for options: 'pro'
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This is an generator for QMake '.pro' files. HEADERS and SOURCES variables would be fill with all classes, which are not marked as external. It does no round trip generation, because there is no source code. If you want to use it, just include the generated file in your QMake main file. The instruction is: include(<file-you-want-to-include>)

Here are special options for this generator:

Key	Description	Default value
pro.file	The file name for the output.	'x2c.pro'

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Lists and Tables

List of all Options

Key	Description	Default value
target	Target(s) for generation. At this time this could be '*' or one or more class names.	'
xmi-input	File name of the xmi file which should be parsed.	'
config-file	File name of the configuration file which should be used.	'xmi2code.config'
handler	Selection of the handler that should be used.	'umbrello'
generator	The value of this option selects the code generator which will be invoked.	'
template-path	Points to the template file directory.	'templates'
generator-path	Directory where the generators expect/create the source files.	'generated'
use-package-as-dir	xmi2code supports a source tree where UML-packages are directories and classes are files in these directories. true enables this.	'true'
indent	Indentation to be used. Default is 2 (two) spaces.	' '
files-case	Generated file and directory name case. Can be 'lower', 'upper'. Any different value will not change the case.	'lower'
ada.template	Which template file generator use for new files.	'ada'
ada.extension	Which extension the files should have.	'ads'
ada.default-code	Default code for new operations so the user does not forget to implement the operation.	'not implemented'
cpp.h-template	Template file for .h (header) files.	'cpp.h'
cpp.cpp-template	Template file for .cpp (implementation) files.	'cpp.cpp'
cpp.default-code	Code, that will be used in first written functions. To be sure, that they will be coded.	'#error not implemented.'
php.template	Which template file generator use for new files.	'php'
php.extension	Which extension the files should have.	'php'
php.default-code	Default code for new operations. To be sure not to forget to code this function.	'not implemented'
php.pear.use-package-in-classnames	Prepend the Package name in the classnames (like MyPackage_MyClass). This is a half done work, since the package name is only appended in the class definition (like class MyPackage_MySubClass extends MyPackage_MyClass), but not in parameters documentation, etc. (anything different to 'true' it's evaluated to false). You can use '/' in packages to add more directory levels, like package 'My/Package', this will be translated to underscores in class name, like 'My_Package_MyClass'.	'false'
php.pear.underscore-in-nonpublic	Prepends an underscore ('_') to the methods and attributes names that are non public (ie, private or protected).	'true'
pro.file	The file name for the output.	'x2c.pro'

Links

Umbrello Homepage:	http://uml.sourceforge.net
xmi2code Homepage:	http://xmi2code.sourceforge.net

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TOC

Overview

Command Line

Installation

Options

xmi2code General Options

Configuration File

Order Of Option Reading

Handlers

Handler: Umbrello

Type coded features

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Documenation coded features

Generators

Common Generator Options

Source Tags

templates

Generator: Ada Generator

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Generator: C++ Generator

Generator: PHP Generator

Generator: PHP PEAR Generator

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Generator: QMake Generator for Classes

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Lists and Tables

List of all Options

Links