Modeling Industry Data
with
Eclipse Modeling Project
Sven Efftinge (itemis AG)
Dr. Jan Koehnlein (itemis AG)

Frameworks and Tools
used to design, use and process
Domain-Specific Languages

EMF

GMF
EMF

GMF TMF
EMF

GMF TMF
EMF
M2M

GMF TMF
EMF
M2M M2T

Experiences made in
a real world project

Initial Situation
• DB-Application
• Oracle DB
• Oracle Forms

Goal
• Oracle DB
• Java Rich Client
• JPA
• Spring
• Swing / JGoodies Forms

Quantities
• 1722 tables

Quantities
• 1722 tables
• 19572 columns

Quantities
• 1722 tables
• 19572 columns
• over 300 Forms

Quantities
• 1722 tables
• 19572 columns
• over 300 Forms
Our job

Quantities
• 1722 tables
• 19572 columns
• over 300 Forms
Our job
• Find suitable abstractions

Quantities
• 1722 tables
• 19572 columns
• over 300 Forms
Our job
• Find suitable abstractions
• Simplify code

Domain Model

@SuppressWarnings(\"serial\")
@Entity
Entity
@Table(name = \"BUCHUNGSKREISE_F\")
BUCHUNGSKREISE_F
public class BuchungskreiseF extends AbstractEntity implements Serializable {
@SuppressWarnings(\"unused\")
@Id
Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = \"bkrIdSeq\")
@SequenceGenerator(name = \"bkrIdSeq\", sequenceName = \"BKR_SEQ\", allocationSize = 1)
BKR_SEQ
@Column(name = \"BKR_ID\", nullable = false
BKR_ID false)
private Long bkrId
bkrId;
public Long getBkrId() {
return bkrId;
}
public void setBkrId(final Long bkrId) {
this.bkrId = bkrId;
}
@Column(name = \"KONTO_NR\", nullable = false length = 45
KONTO_NR false, 45)
private String kontoNr;
kontoNr
public String getKontoNr() {
return kontoNr;
}
public void setKontoNr(final String kontoNr) {
String oldValue = this.kontoNr;
this.kontoNr = kontoNr;
firePropertyChangeEvent(\"kontoNr\", oldValue, this.kontoNr);
}

@SuppressWarnings(\"serial\")
@Entity
Entity
@Table(name = \"BUCHUNGSKREISE_F\")
BUCHUNGSKREISE_F
public class BuchungskreiseF extends AbstractEntity implements Serializable {
@SuppressWarnings(\"unused\")
@Id
Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = \"bkrIdSeq\")
@SequenceGenerator(name = \"bkrIdSeq\", sequenceName = \"BKR_SEQ\", allocationSize = 1)
BKR_SEQ
@Column(name = \"BKR_ID\", nullable = false
BKR_ID false)
private Long bkrId
bkrId;
public Long getBkrId() {
return bkrId;
}
public void setBkrId(final Long bkrId) {
this.bkrId = bkrId;
}
@Column(name = \"KONTO_NR\", nullable = false length = 45
KONTO_NR false, 45)
private String kontoNr;
kontoNr
public String getKontoNr() {
return kontoNr;
}
public void setKontoNr(final String kontoNr) {
String oldValue = this.kontoNr;
this.kontoNr = kontoNr;
firePropertyChangeEvent(\"kontoNr\", oldValue, this.kontoNr);
}

External DSL with TMF Xtext
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr (notNull, length=45)
Long rgNrBkrIdentifikator (notNull, length=1)
String referenzcodeKontoNr (notNull, length=45)
}

External DSL with TMF Xtext
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr
Long rgNrBkrIdentifikator
String referenzcodeKontoNr
}

External DSL with TMF Xtext
BUCHUNGSKREISE_F
entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
String kontoNr
RG_NR_BKR_IDENTIFIKATOR
Long rgNrBkrIdentifikator
String referenzcodeKontoNr
}

entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
}

entity BuchungskreiseF
(id=bkrId sequenceName=BKR_SEQ) {
}
TABLE BUCHUNGSKREISE_F
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
Database Schema

Number of Characters (Domain model DSL)
30.000 (DSL)
+ 50.000 (code generator)
With DSL
+ 170 / Entity
7000 / Entity
Without DSL
300 TZ
240 TZ
11 Entities
180 TZ
120 TZ
60 TZ
0 TZ
0 20 40

Views

public class PersonenForm extends
Form<Personen> {

public class PersonenForm extends
Form<Personen> {

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
private JComponent
vornameTextField;

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
private JComponent
vornameTextField;

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
@Override
protected void initComponents() {
...
vornameTextField =
builder.createTextField(desc.vorname(),
private JComponent
vornameTextField;
Editable.PROPERTY_DEFAULT,
MANDATORY);
gepardBuilder.setNoLeadingBlanks
(vornameTextField);

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
@Override
protected void initComponents() {
...
vornameTextField =
private JComponent
builder.createTextField(desc.vorname(),
vornameTextField;
Editable.PROPERTY_DEFAULT,
MANDATORY);
gepardBuilder.setNoLeadingBlanks
(vornameTextField);

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
@Override
protected JComponent buildPanel() {
TwoColumnsPanelBuilder builder = @Override
protected void initComponents() {
...
TwoColumnsPanelBuilder.instance(getBuilderFactory(),
vornameTextField =
private JComponent
builder.createTextField(desc.vorname(),
vornameTextField;
Editable.PROPERTY_DEFAULT,
MANDATORY);
gepardBuilder.setNoLeadingBlanks
getResourceMap());
(vornameTextField);
...
builder.add(\"vorname\", vornameTextField);

public class PersonenForm extends
Form<Personen> {
public class PersonenHauptSubForm extends
SubForm<Personen> {
@Override
protected void initComponents() { @Override
... protected JComponent buildPanel() {
TwoColumnsPanelBuilder builder =
vornameTextField =
private JComponent
builder.createTextField(desc.vorname(),
TwoColumnsPanelBuilder.instance(getBuilderFactory(),
vornameTextField;
getResourceMap());
Editable.PROPERTY_DEFAULT,
MANDATORY); ...
builder.add(\"vorname\", vornameTextField);
gepardBuilder.setNoLeadingBlanks
(vornameTextField);

Why not GUI-Builder?
• No control over generated
code
• Too many details
• Do not directly leverage
information from the domain
models

Graphical GUI-DSL with GMF

Graphical GUI-DSL with GMF

ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
Referencing
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
ID NAME PROP1 DATE ATTR1
model : gepard;
import \"platform:/resource/com.affichage.it21.gp.dao/src/main/model/types.dao\"
com.affichage.it21.gp.dao {
flaechen {
readOnly entity WaehrungF (id =(rvLowValue)) {
}
readOnly entity GepardVerwendungPvF (id =(pvOid)) {
temporal manyToOne GeschpartnerAllBsF geschpartner (joinColum
}
}
verkauf {
readOnly entity GepardVerwendungKdvtF (id =(kdvtId)) {
temporal notNull manyToOne GeschpartnerAllBsF geschpartner (j
notNull Number istLangfrist (castTo=Boolean)
notNull Number istLokaldispo (castTo=Boolean)
}
}
gepard {
readOnly entity AbcKundenF (id = (rvLowValue)) {

Validation

addValidator(new Validator<Institutionen>() {
@Override
public ValidationResult validate(final Institutionen institution) {
final ValidationResult result = new ValidationResult();
if (institution != null
&& institution.getEsrNr() != null
&& !CheckUtils.checkPcKontoNrPruefziffer(
Long.parseLong(institution.getEsrNr())) {
result.add(new SimpleValidationMessage(
getResourceMap().getString(\"validation.esr.msg\"),
Severity.ERROR, getModel(Institutionen.DESC.esrNr())));
}
return result;
}
});

Eliminate framework code
addValidator(new Validator<Institutionen>() {
@Override
public ValidationResult validate(final Institutionen institution) {
final ValidationResult result = new ValidationResult();
if (institution != null
&& institution.getEsrNr() != null
&& !CheckUtils.checkPcKontoNrPruefziffer(
Long.parseLong(institution.getEsrNr())) {
result.add(new SimpleValidationMessage(
getResourceMap().getString(\"validation.esr.msg\"),
Severity.ERROR, getModel(Institutionen.DESC.esrNr())));
}
return result;
}
});

Eliminate framework code
Avoid repetitive null pointer checks
addValidator(new Validator<Institutionen>() {
@Override
public ValidationResult validate(final Institutionen institution) {
final ValidationResult result = new ValidationResult();
if (institution != null
&& institution.getEsrNr() != null
&& !CheckUtils.checkPcKontoNrPruefziffer(
Long.parseLong(institution.getEsrNr())) {
result.add(new SimpleValidationMessage(
getResourceMap().getString(\"validation.esr.msg\"),
Severity.ERROR, getModel(Institutionen.DESC.esrNr())));
}
return result;
}
});

Eliminate framework code
Avoid repetitive null pointer checks
Use static imports
addValidator(new Validator<Institutionen>() {
@Override
public ValidationResult validate(final Institutionen institution) {
final ValidationResult result = new ValidationResult();
if (institution != null
&& institution.getEsrNr() != null
&& !CheckUtils.checkPcKontoNrPruefziffer(
Long.parseLong(institution.getEsrNr())) {
result.add(new SimpleValidationMessage(
getResourceMap().getString(\"validation.esr.msg\"),
Severity.ERROR, getModel(Institutionen.DESC.esrNr())));
}
return result;
}
});

Eliminate framework code
Avoid repetitive null pointer checks
Use static imports
Use and define library methods
addValidator(new Validator<Institutionen>() {
@Override
public ValidationResult validate(final Institutionen institution) {
final ValidationResult result = new ValidationResult();
if (institution != null
&& institution.getEsrNr() != null
&& !CheckUtils.checkPcKontoNrPruefziffer(
Long.parseLong(institution.getEsrNr())) {
result.add(new SimpleValidationMessage(
error(\"validation.esr.msg\", desc.esrNr());
getResourceMap().getString(\"validation.esr.msg\"),
Severity.ERROR, getModel(Institutionen.DESC.esrNr())));
}
return result;
}
});

Internal DSL in Java
@Check
void checkEsrMsg() {
if (!checkKontoNrPruefziffer(parseLong(_this.getEsrNr())))
error(\"validation.esr.msg\",desc.esrNr());
}
• Junit-like
• catches null pointer exceptions

Why do we want to
abstract?

Software Life-Cycle Costs (Schach 2002)
Requirements
Specification
Design
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2%
Requirements
Specification
Design
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
Requirements
Specification
Design
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
6%
Requirements
Specification
Design
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
6%
Requirements
5%
Specification
Design
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
6%
Requirements
5%
Specification
Design
7%
Coding
Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
6%
Requirements
5%
Specification
Design
7%
Coding
8% Unit Testing
Integration
Maintenance

Software Life-Cycle Costs (Schach 2002)
2% 5%
6%
Requirements
5%
Specification
Design
7%
Coding
8% Unit Testing
Integration
67%
Maintenance

Software maintenance - proportional costs

Software maintenance - proportional costs

Software Rots

Finance related applications
of Eclipse Modeling

Questions ?