MOLA2 Tool User Manual
Contents
1. sm JE cu Figure 17 Configuring transformation runner 4 MOLA TDE MOLA Transformation Development Environment TDE has been built on the basis of MET Aclipse tool building framework which also has been developed by the University of Latvia IMCS METAclipse is a metamodel and transformation based tool building platform which is specially fit for the support of complicated graphical domain specific languages and MOLA is such a language From the technical point of view METAclipse is a set of Eclipse plugins which extend the functionality of standard Eclipse components EMF GEF and partially GMF It contains advanced presentation engines which support graphical diagram building property editing and all other diagram and model related facilities More precisely the engines perform all the various visualisation and user interaction related tasks in a standard way typical to Eclipse environment they do these jobs on the basis of a fixed presentation metamodel However the main functionality of a tool based on METAclipse is defined by transformations which link the domain and presentation visualisation models in the tool fill up property dialogs and process the updated property values In METAclipse framework these tool specific transformations are built in MOLA File Edit Navigate Search Project Diagram Run Window Help tie 0 FI RE ie EME es EMEA METAclipse Explorer 23 54 T QVTRelation T showMessa2. 1 Right click on the MOLA model node and choose Add procedure see Fig 8 an MET clipse METAclipse Jay File Edit Navigate Search Project Window Help a A E FE METAcipse x gt E METAclipse Explorer 23 20 2 123 Tutorial Example 4 MetaModel MolaModel Compile All Compile Add package Add procedure Delete model Export Import as i 57 DE Outline 3 of cut I Copy E Paste j An outline is not avai E Properties 23 Se m 12 1 items selected Figure 8 Creation of MOLA procedure 2 Double click on the MOLA procedure node to open the MOLA editor see Fig 9 Note that one procedure in the transformation must be the main em METAclipse MolaProcedure METAclipse Wee File Edit Navigate Search Project Diagram Window Help mb g ER o i Ro I ES ES METAdipse E METAdipse Explorer 23 O amp M molaprocedure 53 ul E GS wjj4 Palette E ES Tutorial Example seee MetaModel IR Marges S MolaModel C Foreach loop Compiler messages O Rue 6 MolaProcedure Class element E External procedures Ca Comment Note link es 9 End 4 Flow line D Parameter En Text Statement E Cal Statement While loop 2 External call Z Association link D Variable 7 After ink BE Outline 3 EE Properties 2 im a General Procedure Name MolaProcedure Is main M g 8 1
3. Delete from diagram context menu item to remove a metamodel element class enumeration association or generalization representation from class diagram A Note Metamodel element class enumeration association or generalization may appear in more than one class diagram Use Visualize in current diagram context menu item on appropriate tree node in the METAclipse Explorer to add this metamodel element class enumeration association or generalization to the currently active class diagram Use Visualize class related context menu item for class to add also associations and generalizations between this class and classes in the class diagram 4 1 4 Importing Ecore Metamodels Use ECore Metamodel Import Wizard File Import Metamodel Import Ecore Metamodel Import to import Ecore metamodel into MOLA TDE Note Use METAclipse Visualize invisible elements context menu item on project node to visualize imported metamodel in the METAclipse Explorer tree 4 2 MOLA Editor 4 2 1 Creating Deleting MOLA Packages Units Use METAclipse Explorer to create or delete a MOLA package The tree node MolaModel represents a container for MOLA procedures MOLA packages can be created using context menu item Add package of any other MOLA package or MolaModel tree node To delete a package use Delete package context menu item All child elements of package are deleted too Note Package can be set as MOLA unit using Is unit property 4 2 2 Creat
4. MOLA project step 2 5 Name the MOLA project and press Finish see Fig 4 New METAclipse project Project name Tutorial Example 4 Use default location Location C lworkspace Tutorial Example Browse Figure 4 Creation of MOLA project step 3 6 There may be several projects in the workspace To create another MET Aclipse project close the opened one right click on the project node and choose Close Project see Fig 5 and follow this instruction steps 3 5 SM METAclipse METAclipse a File Edit Navigate Search Project Window Help ja Niger Ur ES ES METAcipse I METAclipse Explorer 53 A mij A tr gt Tutorial Evento New Copy Ctrl C X Delete Delete Rename F2 y Import t Export amp Refresh Close Project p Outline 3 An outline is mot a METAclipse Properties Alt Enter ne 12 Tutorial Example Figure 5 How to close a MOLA project 3 2 How to Create a Class Diagram 1 Right click on the metamodel node and choose Add class diagram see Fig 6 EN METActipse METActipse BAX File Edit Navigate Search Project Window Help r iw ilar iz a gt o E EB METAdipse E METAclipse Explorer 2 i m a AS Y Bae Tutorial_Example e MetaMode E fe MolaModel Add package Add class diagram Add class Add enumeration Delete
5. enough parameters in a call of the indexOf function A call of the function indexOf in an expression has less than two call parameters 11 Too much parameters in a call of the indexOf function A call of the function indexOf in an expression has more than two call parameters 12 Not enough parameters in a call of the substring function A call of the function substring in an expression has less than two call parameters 13 Too much parameters in a call of the substring function A call of the function substring in an expression has more than three call parameters 14 Expression formation error in a call of the toString function 15 String expression in a call of the toString function A string expression is supplied as a call parameter to the toString function 16 Class typed expression in a call of the toString function A class typed expression is supplied as a call parameter to the toString function 17 A simple expression contains prohibited symbol gt lt gt lt lt gt comma and or not iy Keywords and or not or symbols gt lt lt gt lt gt is used in an expression in an assignment or a call parameter Also a wrong usage of the comma or the dot in any expression may cause this error 18 A type mismatch in an expression by attribute specification attribute name The attribute of a wrong type is used Only the name of the attribute
6. model of Cut E Copy E Paste EE Outline 53 a An outline is not available EI Properties 52 e s po TE 1 items selected Figure 6 Creation of class diagram 2 Double click on the class diagram node to open the metamodel editor see Fig 7 The metamodel may contain several class diagrams The elements of the metamodel classes associations etc may be displayed in any class diagram Note if you plan using EMF then all classes should be packaged Every root package included directly under MetaModel node will become distinct ecore file E METActipse ClassDiagram METAclipse Kee File Edit Navigate Search Project Diagram Window Help Os A ita Xp DO ES ES METAdipse O METAdipse Explorer 3 O amp M classDiagram E as 7j Palette Select 2 Tutorial Example al b fa MetaModel radio ClassDiagram Q Class sedge 32 Enumeration mappedB E O anode 3 Association O BEdge A Generalization Brode E Note O End es Note link connectedStart 1 connectedEnd O start 4 connectedStart Start node Bl 4 eEnd End incoming BEdge endNode ANode incoming AE estart Start outgoing BEdge M mM gt lt BE Outline 53 incoming E E E Properties 2 8 1 items selected Figure 7 Editing of class diagram 3 3 How to Create a MOLA Procedure
7. The MOLA Tool User Guide Version 2 2 November 2009 Table of Content 92 Ho ta Create a Class Diagram o pd Ta aed sania o rete DUN 8 33 How io Create a MOLA Procedure ii reta 10 d IE MOLA Procedures A A A AAA 17 4 2 4 Importing Exporting MOLA Procedures 0ssssaseneoaaa aana neon e oa anane anane p anana 18 de MACON saa cet cca rece ed ana baanga a an pa cou ga anaa aa Da a anapa aaa a ban aa a an aa A 18 4 3 1 Using MOLA do mi rep CHF Compiler sasak ka le rias nuns onda 18 4 3 2 Using MOLA to JGralab Compiler ssa ices slices ii odds 18 4 3 3 Using MOLA to EMF Conmpiler asasaran etan 5 an aana a ngkang anana aana araga ga aaa a apaa angan 18 5 MOLA TE Si Trnstormation Ruiner ss E eee eae oca eta a ne 1 Introduction This paper contains the main guidelines for the usage of MOLA Tool It includes the installation manual the user manual and issues on the execution of the MOLA transformations The MOLA Tool is used to create compile run and store MOLA transformations The MOLA Tool is designed as a freeware tool for supporting research in the MDA and MDSD areas It consists of two parts the Transformation Development Environment TDE and the Transformation Execution Environment TEE The main components of TDE are e Graphical Editors for metamodel and MOLA procedures built using the METAclipse tool building framework The editors are syntax directed they al
8. There is a file start bat which must be launched to start the Repository Browser Java is required for this tool 2 2 Details for C version Currently the Borland Turbo C Explorer is required to finish a compilation process of MOLA transformation for mii_rep If you do not plan using mii_rep then you can omit this step More information about it is found in http www turboexplorer com cpp and http www codegear com downloads free turbo Note that a registration is required to obtain the product activation key Download the full prerequisite install 228 MB zipped from ftp ftpd codegear com download bds bds 2006 trial english arch disk preregs zip The prerequisite installer will install the software necessary for your Turbo product to run including Microsoft NET Framework v1 1 Redistributable Microsoft NET SDK v1 1 Microsoft Visual J v1 1 Redistributable Microsoft Internet Explorer 6 SP1 and Microsoft XML Core Services v4 0 SP2 If you already have any of these items installed the installer will skip them Download Turbo C Explorer installer 390 MB zipped from http altd codegear com akdlm download turbo English C Explorer TCPP EXPL EN DL exe Run it and follow the instructions 3 Quick Start This chapter contains a short list of the main actions which are performed by a user of MOLA Tool starting MOLA project creating MOLA transformation creating class diagram creating MOLA procedure and compiling MOLA tran
9. ameter Text Statement La 52 Call Statement T O While loop NI g E E Properties 52 BE Outline 23 Properties are not available n uml2rdbmsF result MolaModel Figure 12 Compilation result 3 5 How to Execute MOLA transformation This section contains a brief description how to prepare data for transformation using means by Eclipse EMF and run transformation using Transformation runner 3 5 1 Preparing data 1 Open ecore file by double clicking on it Right click on the class which is instantiated and choose Create dynamic instance see Fig 13 Choose the name of XMI file and press OK Or PG Pr ener METAdipse Explorer 2N GN umiToRDEMS ES 7 4 8 platform resource uml2rdbmsF result MolaModel simpluml ecore 87 Tutorial Example 4 ib simpluml El umi2rdbmsF b E Association gt PackagableElement a MetaModel gt El PackagableElement gt UMLModelElement l MolaModel gt E PrimitiveDataType gt Classifier result E UMLModelElement MolaModel E LO_CompResjar re de simplrdbms ecore New Sibling de simpluml ecore TERA aS New Child Redo Ctri Validate Control Create Dynamic Instance Run As asa Team Compare With Replace With SE Outline EN 1 E Properties 52 _ An outline is not available Pangkah Abstract Default Value Load Resource ESuper Types Instance Class Nan Refresh opet ShowProperties View Selected Object Packag
10. e gt UMLModelElement Figure 13 Dynamic instantiation of Ecore class 2 Use EMF Model Editor to create instances see Fig 14 l METAclipse umi2rdbmsF result MolaModel data xmi METAclipse File Edit Navigate Search Project Run Sample Reflective Editor Window Help Ji tiv itr 0 iein Fre eror TI METAclipse Explorer EN SO qn umiToRDBMS amp simpluml ecore B xja R platform resource uml2rdbmsF result MolaModel data xmi Tutorial_Example a Paca El umbrdbmsF gt E platform New Child 4 Elements Association a MetaModel gt platform Undo CtrlaZ t Elements Packageble Element MolaModel Ct Y t Elements Primitive Data Type amp result t Elements Classifier MolaModel E Cut Elements Class Q dataxmi Copy ls LO CompRes jar amp simplrdbms ecore amp simpluml ecore Paste Delete Validate Control rw EB Properties Compare With SE Outline EN E Waa san Kanca MEN An outline is not available Kind Load Resource Name Package To Refresh Show Properties View O Selected Object Package Figure 14 EMF Model Editor 3 5 2 Transforming data 1 Select Run Run Configurations see Fig 15 J METAclipse test002_firstnext METAclipse File Edit Navigate Search Project Diagram Window Help Q Run Last Lau
11. e plug in It allows executing MOLA transformation on an EMF model e Repository Browser is built as Java application which allows browsing the content of repository in tabular view and executing transformations It is compatible with all supported repositories for browsing but only mii rep C transformations can be run e Transformation can be integrated directly in your software If your software uses one of mii rep JGralab or EMF repositories then transformations can be executed direct ly on models loaded in the memory MOLA transformations are suitable for integra tion into a modelling tools as plug ins e g as Rational Software Architect plug in it uses EMF or Enterprise Architect plug in import export facilities needed from EA repository 2 Installation This chapter contains the installation guide of MOLA Tool The MOLA Tool works on Microsoft Windows XP and VISTA platforms The MOLA Tool can be downloaded from the MOLA web site http mola mii lu lv TD MOLA2Tool zip Simply unzip the archive file The folder MOLA2Tool_vx y contains METAclipse exe executable file which must be launched to start the MOLA TDE Since MOLA TDE itself is an Eclipse plug in it includes also part of MOLA TEE Transformation runner 2 1 Installation of Repository Browser Repository browser allows you browsing supported repositories You can download the Repository Browser from http mola mii lu lv TD repBorwseris 0 4 0 zip Unzip the archive
12. e specification 40 Missing a pointer in a downcast identifier 41 An unknown identifier identifier in downcast 42 The type of the referencable element identifier is not a class 43 Type mismatch in a downcast by referencable element identifier 44 Missing right bracket in a downcast identifier 45 Type mismatch by function identifier 46 Type mismatch by constant identifier 47 Type mismatch by operator identifier 48 Bracket error 49 Right bracket missing in isTypeOf isKindOf method 50 There are more than one main procedure 51 No called procedure set 52 The call parameter identifier and the actual parameter have incompatible types 53 Not enough call parameters A call statement has less call parameters than specified by the called procedure A call statement has wrong numbering of call parameters 54 Too many call parameters 55 No loop variable in the loophead 56 A delete or normal association link is to a create class element 57 A rule is empty 58 A class element has no class specified 59 An association link has no association specified 60 A loop variable is reference 61 A NOT element must be a normal class element 62 A NOT link must be a normal association link 63 No loophead in a foreach loop 64 Nothing selected to compile 65 An unknown identifier ide
13. geProject splitTest E Marquee E F Es TemplateMOLATool O Foreach loop E A a EE TestCase E Rule A name Person Hip E MetaModel Class element 48 RDB 1 int PrimitiveTypk O Column F E Kerne 2 Kemep O Element 3 E o name O Table 48 UML 8 ClassDiagrami column Column table Table toUML Element toRDB Element Column gt Element E A Table gt Element E MolaModel Y Association link 3 Compiler messages D Variable 8 mainProc After link printElementName test001_create test002 firstnext test003_delete test004_setVars R test005_strings i4 Marquee test006_action O Class 8 testParams Enumeration EH External procedures Association Generalization MolaModel E Note ul generatedGralabRepoMM jar la Note link L ka O Class li LO CompResjar SE peee sabsirac Boolean LO Scripttg uppersouna Integer ido Packagexmi 0 1 opposite 0 1 inv_opposite BN ClassDiagraml 52 la la E la la la E Properties E Class MetaModel UML Kernel Property ESA Name Type Multiplicity Is temporary putero eae MN Style 2 upperBound Integer O Figure 18 MOLA TDE Since TDE has been built using Eclipse components MOLA editors are similar to other tools built upon Eclipse Therefore MOLA TDE uses the same workspace principle as any other Eclipse based tool MOLA
14. ia X i Eg E I ES EB MeTacipse DS METAclipse Explorer 53 O 8 molaprocedure 52 u B 6 Palette Tutorial Example y Select E MetaModel EX Marquee E E MolaModel O Foreach loop EB Compiler messages Rule 1 molaProcedure E Class element EB External procedures TB Comment Note link esa End 3 Flow line D Parameter Text Statement SB Cal Statement While loop External call Association link 1 Variable After link BE Outline 23 A E Properties 53 Compiler messages Compilerr messages Message type Message Add Error A delete or normal association link is to a create class element Error An unknown identifier name Figure 11 Error handling in MOLA Editor 3 The result of compilation result LO CompRes jar ecore files is stored in result MolaModel see Fig 12 ips mos e DD DD DD eea File Edit Navigate Search Project Diagram Run Window Help in maitono Eme es G METAcipse JETAclipse Explorer 3 EN umiToRDBMS 23 4 Palette E a Tutorial_Example k Select a 4 uml2rdbmsF it Marquee a MetaModel C Foreach loop 1 MolaModel O Rule a result B Class element 4 MolaModel CA Comment E E l LO_CompRes jar Note link simplrdbms ecore Start aN simpluml ecore End 4 Flow line E D Par
15. ile whole MOLA transformation 4 3 1 Using MOLA to mii_rep C Compiler Use Compile to C to compile MOLA transformation against mii_rep repository The C project is created in the project folder mola MolaModel compres comp_result_MITI Open the LO CompRes wgb mii bpr file using Borland Turbo C Explorer You can edit the userCodePlaceHolder cpp file add external procedure definitions Build the project the results are LO CompRes wgb mii dll file executable and metamodel xml file repository definition 4 3 2 Using MOLA to JGralab Compiler Use Compile to JGralab to compile MOLA transformation against JGralab repository The results are generatedGralabRepoMM jar repository implementation classes LO Script tg repository definition and LO CompRes jar executable These files are stored in the project folder result MolaModel Note If result folder does not appear in the METAclipse Explorer then use File Refresh menu item 4 3 3 Using MOLA to EMF Compiler Use Compile to EMF to compile MOLA transformation against EMF repository The results are set of ecore files repository definition and LO CompRes jar executable These files are stored in the project folder resultiMolaModel Note If result folder does not appear in the METAclipse Explorer then use File Refresh menu item 4 3 4 Part of MOLA Language Recognized by Compiler Currently the MOLA compiler supports A MOLA procedure may contain statements star
16. in a class element The keyword self is used not in class element e g in text statement or call statement Note self keyword can be used in a class element only 32 An unknown identifier identifier before a dot An identifier before a dot symbol is unknown It must be a valid pointer name 33 A referencable element referencable element name before a dot is not class typed pointer An identifier before a dot symbol is referencable element name but not pointer There is no dot operand for primitive typed or enumeration elements 34 An identifier identifier after a dot is not attribute specification An identifier after a dot symbol is not the attribute specification current version of compiler does not support set expressions therefore only attribute specifications are allowed 35 Type mismatch by attribute specification attribute specification An attribute specification is used in expression of different type 36 Incorrect syntax of the method_name method 37 Unknown type specification identifier in a isTypeOf method An argument in the isTypeOf method is not a valid type specification 38 Type mismatch by downcast type specification 1 A type specified in the downcast is not compatible with type of expression 39 Unknown type specification identifier in a isKindOf method An argument in the isKindOf method is not a valid typ
17. ing Deleting MOLA Procedures Use METAclipse Explorer to create or delete a MOLA procedure MOLA procedures can be created using context menu item Add procedure of any package or MolaModel tree node To delete a MOLA procedure use Delete procedure context menu item Note Use Add external procedure context menu item on the External procedures tree node to create an external procedure The actual implementation of external procedure should be added to UserCodePlaceHolde cpp or java file depending on target platform 4 2 3 Editing MOLA Procedures Use METAclipse Explorer to open MOLA diagram Double click on MOLA procedure node to open the appropriate diagram Use appropriate palette element to create a new MOLA element Use property editor to set properties of MOLA elements 4 2 4 Importing Exporting MOLA Procedures Use Export context menu item on MOLA procedure node or MOLA package node to export procedure or package to XML file Note Use this option on MolaModel node to export all MOLA transformations Use Import context menu item on MOLA package to import MOLA procedures into the MOLA transformation Note The metamodel fragment used by imported MOLA procedures should be a subset of metamodel used by MOLA transformation in this project 4 3 MOLA Compiler MOLA compiler creates the executable file of transformation depending on the target platform Use Compile All Compile to context menu item on MolaModel tree node to comp
18. ion F Press the New button to create a configuration of the selected type IX Lx MOLA Transformation Press the Duplicate button to copy the selected configuration X Press the Delete button to remove the selected configuration To Press the Filter button to configure filtering options Edit or view an existing configuration by selecting it Configure launch perspective settings from the Perspectives preference page Filter matched 1 of 1 items E Figure 16 Creating new launch configuration 3 Choose transformation jar file metamodel ecore files and model xmi files see Fig 17 Press Run to launch transformation Model file should be reopened to see the result CL Create manage and run configurations W KENI Er type filter text T Lx MOLA Transformation Name New configuration a E umlZrdbmsF 4 gt result a MolaModel s simplrdbms econ simpluml ecore IX Configuration Common Transformation Selection S workspace_loc uml2rdbmsF result MolaModel LO_CompRes jar Workspace Externat Registry Metamodel Selection Model Selection S workspace_loc um l2rdbmsF result MolaModel S workspace_loc um l2rdbmsF result MolaModel S workspace_loc uml2rdbmsF resul Add S workspace_loc uml2rdbmsF resull Add Remove Apply J Rever
19. is displayed in the error message also when a pointer with dot is specified before it 19 A type mismatch in an expression by referencable element specification referencable_element_name A variable parameter or class element used in an expression of an incompatible type 20 An unknown identifier identifier The unknown identifier is used in non enumeration expression 21 An unknown enumeration literal literal The unknown identifier is used in an enumeration expression 22 No left side in a relation The left side of a relation to the left from lt gt is missing in a constraint 23 No right side in a relation The right side of a relation to the right from lt gt is missing in a constraint 24 Bracket error in a Boolean expression There are bracket mismatch no enclosing or opening bracket or in an expression 25 OR has no right operand An OR expression has no right operand 26 OR has no left operand An OR expression has no left operand 27 AND has no right operand An AND expression has no right operand 28 AND has no left operand An AND expression has no left operand 29 NOT has no operand A NOT expression has no operand 30 An expression ends with the dot There is an incorrect usage of dot symbol in an expression it is the last symbol in the expression 31 The keyword SELF used not
20. items selected Figure 9 Editing of MOLA procedure 3 4 How to Compile MOLA Transformation 1 Right click on the MOLA model node and choose Compile All Compile toEMF see Fig 10 If syntax check is successful then ant script is launched automatically EN MeTAcipse umiToROBMS i _ TS File Edit Navigate Search Project Diagram Run Window Help 0 74 0 E e gt o ie EMA es GeT 3 EN umiToRDBMS 5 4 Palette Bi Tutorial Example N Select im a 2 uml2rdbmsF E Marquee e gt a MetaModel C Foreach loop M Mh Dla m 5 Compile All Syntax check A Compile Compileto C 2 D Debug off Compile to EMF B Debug on Compile to JGraLab gt Add package Compile to TG a Add procedure Compile tg a Delete model Y B Export O im port EH MolaModel Compilethis E Figure 10 The compilation ofa MOLA transformation 2 If compilation fails choose the compiler messages node in the MET Aclipse Explorer see Fig 11 The list of errors is shown in the properties tab Double click on the list item navigates to the appropriate MOLA procedure if possible The problematic elements are highlighted in the MOLA editor j EN METActipse MolaProcedure METActipse LE E File Edit Navigate Search Project Diagram Window Help mo A
21. low creating mostly syntactic correct constructions and offering sophisticated prompters The integrity between metamodel and MOLA procedures are maintained automatically e MOLA Compiler a set of compilers which checks the syntax correctness of MOLA program and creates the executable Compiler generates OOPL code from a MOLA transformation which after the compilation is capable of executing against an appropriate model repository Three different target repositories are available Compiler generates C code against the API of high performance custom model repository mii rep built by UL IMCS Two other compiler versions generate Java code one against the open source high performance graph metamodel based repository JGraLab built at the University of Koblenz However the most important for wide usage of MOLA is the compiler version generating Java against the API of Eclipse EMF which is the most popular model repository kind so far The result of compilation is the executable file jar or dll The definition of corresponding repository is also created by MOLA compiler Execution of MOLA transformations are performed using MOLA TEE It consists of the metamodel based in memory repository and the appropriately compiled transformation exe cutable Repository must contain the respective metamodel which also can be built by the MOLA TDE MOLA TEE offers several possibilities how to run transformations e Transformation Runner is built as an Eclips
22. nched Ctrl FLL Debug Last Launched a El TestCase cloned Run History a MetaModel Run As HE RDB Run Configurations 48 UML 8 ClassDiagram1 Debug History column Column table Table Debug As toUML Element toRDB Element Debug Configurations Column gt Element A Table gt Element Ca Comment a l MolaModel Note link Mc Class pagi messages E Start Kernel 8 printElementName O End 8 test001_create 4 Flowline 8 test002 firstnext 8 test003_delete 8 test004_setVars Parameter Ea Text Statement 8 test005_strings Call Statement gt test006_ action E While loop testParams E External call 8 External procedures LJ po Ro pal b result Association link 4 sineba E Properties 23 EI Console E Outline 23 E E Procedure General Name test002 firstnext Is main m Do not compil E EE EE Debug on ED E ED pasa E E o 1 items selected Figure 15 Opening Run configurations dialog 2 Create new launch configuration by selecting Lx MOLA Transformation and pressing New button see Fig 16 Y Run eu e am a A Create manage and run configurations Q Te wl Ee the i E E Configure launch settings from this dialog New launch configurat
23. ntifier in a constraint 66 No incoming control flow 67 The alternative ELSE outgoing control flow is not permitted 68 No outgoing control flow 69 The incoming control flow not permitted to loophead 70 No identifier after arrow gt in an expression 71 An unknown identifier identifier after arrow gt in an expression 72 An identifier identifier used in the isEmpty or notEmpty method is not property name 73 The opening bracket missing after isEmpty or notEmpty method 74 The closing bracket missing after isEmpty or notEmpty method 75 There is no loophead in a while loop 76 Assigned element not set Assignment created in a text statement but variable has not been set Active empty row is found in the grid 77 Assigned property not set Assignment created in a class element but property has not been set Active empty row is found in the grid 78 Class element with non class type 79 Creating instance of abstract class
24. r metamodels used by MOLA transformation Packages can be created using context menu item Add package of any other package or MetaModel tree node To delete a package use Delete package context menu item All child elements of package are deleted too Note Tree Editor may be used also to create and delete classes and enumerations Use appropriate context menu items 4 1 2 Creating Deleting Class Diagrams Use METAclipse Explorer to create or delete a class diagram Class diagrams can be created using context menu item Add class diagram of any package or MetaModel tree node To delete a class diagram use Delete class diagram context menu item Note Deleting class diagram does not delete contained metamodel elements 4 1 3 Creating Deleting Class Diagram Elements Use METAclipse Explorer to open class diagram Double click on class diagram node to open the appropriate diagram Use appropriate palette element to create a new metamodel element class enumeration association generalization or note The new class or enumeration is added to package which contains the class diagram Class attributes and enumeration literals can be added using appropriate context menu item or tab in the property editor Note Class or enumeration can be moved to another package using Package property in the General tab Use Delete from model context menu item to permanently delete a metamodel element It is removed from all diagrams where it appears Use
25. sformation Since it is a quick start this chapter does not contain detailed description of Metamodel Editor see Chap 4 1 for details and MOLA Editor see Chap 4 2 for details We suppose that these editors are quite intuitive 3 1 Howto Create MOLA Transformation 1 Launch METAclipse exe 2 Choose a workspace folder where MOLA projects are stored see Fig 1 Sl Workspace Launcher Select a workspace METAclipse stores your projects in a folder called a workspace Choose a workspace folder to use for this session Workspace C workspace y Conse use this as the default and do not ask again Figure 1 Selection of workspace 3 Right click on the METAclipse Explorer choose New gt Project see Fig 2 EN METActipse METAclipse Cua File Edit Navigate Search Project Window Help Dis A la Xa E METAdlipse Explorer 3 a BS New gt Project s Import Pj Other L Export Refresh B Outline 3 An outline is not available g O items selected E Properties 3 Properties are not available ES FE METAdipse Figure 2 Creation of MOLA project step 1 4 Choose MET Aclipse gt METAClipse Project in the tree press Next gt see Fig 3 Select a wizard Wizards type filter text H E General METAclipse Figure 3 Creation of
26. sformations The main advantage of this tool is the capability to open all supported repository files Appendix A Error Messages of the MOLA Compiler 1 The parameter has no type specification The type has not been set for a parameter of an external procedure 2 The parameter has no type specification The type has not been set for a parameter ofa MOLA procedure 3 The variable has no type specification The type has not been set for a variable 4 The function toEnum used in a non enumeration expression The function toEnum used in a non enumeration expression 5 Too much parameters in a call of the toEnum A call of the function toEnum in an expression has more than one call parameter 6 No parameters in a call of the toEnum A call of the function toEnum in an expression has no call parameters 7 There are multiple identical outgoing flows from the flowend The graphical statement has more then one outgoing control flows of the same type More than one ELSE or non ELSE flow 8 Too much parameters in a call of the function name function A call of a one argument function toInteger size toString toUpper toLower toBoolean in an expression has more than one call parameter 9 No parameters in a call of the function name function A call of a one argument function tolnteger size toString toUpper toLower toBoolean in an expression has no call parameter 10 Not
27. t end rule text statement call statement also external for each loop while loop is not supported Statements may be connected with control flows accordingly to their semantics A MOLA procedure may contain every kind of the referencable elements variable parameter class element MOLA constructions text statement class element call statement may contain expressions The MOLA compiler does not support set expressions and emptiness verification operations on attribute value The left part of a relation in a constraint may not be the toEnum function and the NULL constant The negative integer constants are also not supported There are other constraints that are not listed here but they are rarely used constructions Therefore they will be implemented in the next versions of MOLA compiler 5 MOLA TEE 5 1 Transformation Runner Use Run Run Configurations menu item to invoke Transformation Runner Create Lx MOLA Transformation launch configuration Fill required fields in the configuration form e Transformation Selection executable LO_CompRes jar e Metamodel Selection repository definition for EMF ecore or repository implementation classes for JGralab generatedGralabRepoMM jar e Model Selection model definition for EMF xmi or repository definition for JGralab tg Press Run to launch transformation 5 2 Repository Browser Use repository browser to view model and execute MOLA tran
28. workspace may contain any number of MOLA transformations In fact a single MOLA transformation is represented as an Eclipse project in MOLA TDE It consists of metamodel and a set of MOLA procedures Several editors in MOLA TDE are used to edit MOLA transformation e METAclipse Explorer see Figure 18 1 is a tree based editor which is used to manage MOLA transformations It allows creating package hierarchy of metamodel and unit structure of MOLA transformation e Graphical Editors see Figure 18 2 are graph based editors which are used to edit metamodel elements classes associations etc in class diagrams and MOLA elements loops rules etc in MOLA procedures e Property Editor see Figure 18 3 is a form based editor which is used to manage property values of metamodel and MOLA elements selected in other editors There are two graphical editors in MOLA TDE Metamodel Editor and MOLA Editor They are used to edit class diagrams and MOLA diagrams procedures accordingly The Metamodel Editor is described in Section 4 1 and MOLA Editor is described in Section 4 2 Another important part of MOLA TDE is MOLA Compiler It compiles MOLA transformation to C or Java code which can be run against mii_rep JGralab or EMF repositories MOLA Compiler is described in Section 4 3 4 1 Metamodel Editor 4 1 1 Creating Deleting Packages Use METAclipse Explorer to create or delete a package The tree node MetaModel represents a container fo
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