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Model Transformations

To transform the Platform Independent Model (PIM) into a Java UML model EA MDA transformation is used.

Problems

When modifying the Platform Independent Model (PIM) be aware that not every modification will be transmitted by the present templates to the Java UML model:

  • Constraints on classes or attributes will not be transmitted -> *document constraints as notes! * see BestPractices#Documentation1

  • Deleting classes or connectors does not work

  • Multiplicity changes for classes and for attributes might not be trasmitted

  • Persistence changes of classes might not be transmitted.

Proven to work

  • Renaming classes, attributes, operations or connectors is no problem

  • Deleting attributes or operations is no problem

  • Modification of connectors (including multiplicity) is no problem

Java Model

The following modified EA transformation templates have been used for the CommonDataModel

Class

%if elemType != "Class" and elemType != "Interface"%
%endTemplate%

%elemType%
{
  %TRANSFORM_REFERENCE("Class")%
  %TRANSFORM_CURRENT("language")%
  language="Java"

%list="ClassBase" @separator="\n" @indent="  "%
%list="ClassInterface" @separator="\n" @indent="  "%
%list="InnerClass" @separator="\n" @indent="  "%
%if elemType=="Class"%
%list="Attribute" @separator="\n" @indent="  "%
%endIf%
%list="Attribute__AsProperties" @separator="\n" @indent="  " attScope=="Public"%
%list="Operation" @separator="\n" @indent="  "%
}
%list="Connector" @separator="\n"%

Properties

$attName=$parameter1
$type=$parameter2
$propertyName=$attName
$first2 = %LEFT($attName,2)%
Operation
{
  %TRANSFORM_REFERENCE()%

  %if $type=="Boolean" and $first2 == "is" %
    name=%qt%$attName%qt%
  %else%
    $propertyName=%CONVERT_NAME($propertyName, "camel case", "pascal case")%
    name=%qt%%genOptJavaGetPrefix%$propertyName%qt%
  %endIf%
  stereotype="property get"
  scope="Public"
  type=%qt%$type%qt%
  code=%qt%return $attName;%qt%
  Tag{name="attribute_name" value=%qt%$attName%qt%}
}

Operation
{
  %TRANSFORM_REFERENCE()%
  %if $type=="Boolean"%
    $propertyName=%REMOVE_PREFIX($propertyName,"is")%
  %endIf%
  $propertyName=%CONVERT_NAME($propertyName, "camel case", "pascal case")%
  name=%qt%%genOptJavaSetPrefix%$propertyName%qt%
  stereotype="property set"
  scope="Public"
  type="void"
  Parameter
  {
    name="newVal"
    type=%qt%$type%qt%
  }
  code=%qt%$attName = newVal;%qt%
  Tag{name="attribute_name" value=%qt%$attName%qt%}
}

JUnit Model

Class

%if elemType!="Class" or classLanguage!="Java"%
%endTemplate%

Class
{
  %TRANSFORM_REFERENCE("TestClass")%
  name=%qt%%className%Test%qt%
  language="Java"
  stereotype="junit4Test"
  Operation
  {
    name="setUpClass"
    stereotype="Test"
    static="true"
    scope="public"
    type="void"
    Tag
    {
      name="throws"
      value="Exception"
    }
  }
  Operation
  {
    name="setUp"
    stereotype="Test"
    scope="public"
    type="void"
    Tag
    {
      name="throws"
      value="Exception"
    }
  }
  Operation
  {
    name="tearDownClass"
    stereotype="Test"
    static="true"
    scope="public"
    type="void"
    Tag
    {
      name="throws"
      value="Exception"
    }
  }
  Operation
  {
    name="tearDown"
    stereotype = "Test"
    scope="public"
    type="void"
    Tag
    {
      name="throws"
      value="Exception"
    }
  }
\n
%list="Operation" @separator="\n" @indent="  " opScope=="Public"%
}

Dependency
{
  %TRANSFORM_REFERENCE("SourceDependency")%
  Source
  {
    %TRANSFORM_REFERENCE("TestClass")%
  }
  Target
  {
    guid=%qt%%classGUID%%qt%
  }
}

Operation

$name=%opName%
$exists=%list="Operation__Exists" @separator="" opScope=="Public" and $name==opName%
%if $exists!="T"%
$name+=%list="Parameter" @separator=""%
%endIf%

Operation
{
  name=%qt%$name%qt%
  stereotype="Test"
  scope="public"
  constant="true"
  type="void"
}

Code Generation Templates

Also see Macro documentation ?functionmacros.htm

Documentation

Java

File

$COMMENT="WARNING: DO NOT MODIFY THIS TEMPLATE BELOW THIS POINT"
/**
* Copyright (C) 2007 EDIT
* European Distributed Institute of Taxonomy 
* http://www.e-taxonomy.eu
* 
* The contents of this file are subject to the Mozilla Public License Version 1.1
* See LICENSE.TXT at the top of this package for the full license terms.
*/\n
%ImportSection%\n
%list="Class" @separator="\n\n"%

Class

%ClassNotes%
%if classStereotype=="superclass"%
@MappedSuperclass
%elseIf classPersistence=="Persistent"%
@Entity
%endIf%
%PI=" "%
%ClassDeclaration%
%ClassBody%

Class Body

%if elemType == "Interface"%
%PI="\n\n"%
{
%list="InnerClass" @separator="\n\n" @indent="\t"%
%list="Attribute" @separator="\n" @indent="\t"%
%list="Operation" @separator="\n\n" @indent="\t"%
}
%endTemplate%
{
\tstatic Logger logger = Logger.getLogger(%className%.class);\n

%PI="\n\n"%

%list="InnerClass" @separator="\n\n" @indent="\t"%
%list="Attribute" @separator="\n" @indent="\t"%

$ops=""
%if genOptGenConstructor == "T" and classHasConstructor != "T"%
$ops+="\tpublic "+%className%+"(){\n\n\t}"
%endIf%

%if genOptGenDestructor == "T" and classHasDestructor != "T"%
$ops+="\n\n\tpublic void finalize() throws Throwable {\n"
$ops+=%classHasParent=="T" ? "\t\tsuper.finalize();" : ""% + "\n\t}"
%endIf%

%list="Operation" @separator="\n\n" @indent="\t"%
}

Import Section

%if packagePath != "" and packagePath != "." and packagePath != ".\"%
package %packagePath%;
\n
%endIf%
$imports = %fileImports% + "\n"
$imports += %fileHeaders% + "\n"
$imports  += "import org.apache.log4j.Logger;\n"

%if classStereotype == "junit4Test"%
    $imports += "import org.junit.*;\n"  
    $imports += "import static org.junit.Assert.*;\n"  
%endIf%

%if classPersistence == "Persistent"%
  $imports += "import java.util.*;\n"
  $imports += "import javax.persistence.*;\n"
%endIf%
$imports += %list="Import" @separator="\n" importFromAggregation=="T" or importFromAssociation=="T" or importFromAtt=="T" or importFromDependency=="T" or importFromGeneralization=="T" or importFromMeth=="T" or importFromParam=="T" or importFromRealization=="T"%
%REMOVE_DUPLICATES($imports, "\n")%

Attribute Note

$notes=%attNotes%
%WRAP_COMMENT($notes, "120", "", "//")%

Operation

%OperationNotes%
$prefix3=%LEFT(opName,3)%
%if opStereotype!="property get" and $prefix3 == "get" and opStereotype != "Test"%
@Transient
%elseIf opStereotype == "Test"%
%if opName == "setUpClass"%
@BeforeClass
%elseIf opName == "tearDownClass"%
@AfterClass
%elseIf opName == "setUp"%
@Before
%elseIf opName == "tearDown"%
@After
%else%
@Test   
%endIf%%endIf%
%PI=""%
%OperationDeclaration%
%if elemType == "Interface"%
;
%else%
%OperationBody%
%endIf%
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