Eclipse Banking Day

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

EMF

GMF

EMF

GMF TMF

EMF

GMF TMF

M2M

EMF

GMF TMF

M2M M2T

Experiences made in a real world project

• DB-Application

• Oracle DB

• Oracle Forms

Initial Situation

• Oracle DB

• Java Rich Client

• JPA

• Spring

• Swing / JGoodies Forms

Goal

Quantities• 1722 tables


• 19572 columns


• 19572 columns

• over 300 Forms


• 19572 columns

• over 300 Forms

Our job


• 19572 columns

• over 300 Forms

Our job• Find suitable abstractions


• 19572 columns

• over 300 Forms

Our job• Find suitable abstractions

• Simplify code

Domain Model

@SuppressWarnings("serial")@Entity@Table(name = "BUCHUNGSKREISE_F")public class BuchungskreiseF extends AbstractEntity implements Serializable {

@SuppressWarnings("unused") @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "bkrIdSeq") @SequenceGenerator(name = "bkrIdSeq", sequenceName = "BKR_SEQ", allocationSize = 1) @Column(name = "BKR_ID", nullable = false) private Long bkrId;

public Long getBkrId() { return bkrId; }

public void setBkrId(final Long bkrId) { this.bkrId = bkrId; }

@Column(name = "KONTO_NR", nullable = false, length = 45) private String kontoNr;

public String getKontoNr() { return kontoNr; }

public void setKontoNr(final String kontoNr) { String oldValue = this.kontoNr; this.kontoNr = kontoNr; firePropertyChangeEvent("kontoNr", oldValue, this.kontoNr); }

@Column(name = "RG_NR_BKR_IDENTIFIKATOR", nullable = false, length = 1) private Long rgNrBkrIdentifikator;

public Long getRgNrBkrIdentifikator() { return rgNrBkrIdentifikator; }

public void setRgNrBkrIdentifikator(final Long rgNrBkrIdentifikator) { Long oldValue = this.rgNrBkrIdentifikator; this.rgNrBkrIdentifikator = rgNrBkrIdentifikator; firePropertyChangeEvent("rgNrBkrIdentifikator", oldValue, this.rgNrBkrIdentifikator); }

@Column(name = "REFERENZCODE_KONTO_NR", nullable = false, length = 45) private String referenzcodeKontoNr;

public String getReferenzcodeKontoNr() { return referenzcodeKontoNr; }

public void setReferenzcodeKontoNr(final String referenzcodeKontoNr) { String oldValue = this.referenzcodeKontoNr; this.referenzcodeKontoNr = referenzcodeKontoNr; firePropertyChangeEvent("referenzcodeKontoNr", oldValue, this.referenzcodeKontoNr); }

@Column(name = "PC_NR_RG", nullable = false, length = 45) private String pcNrRg;

public String getPcNrRg() { return pcNrRg; }

public void setPcNrRg(final String pcNrRg) { String oldValue = this.pcNrRg; this.pcNrRg = pcNrRg; firePropertyChangeEvent("pcNrRg", oldValue, this.pcNrRg); }

@Column(name = "PC_NR_PVA", nullable = false, length = 45) private String pcNrPva;

public String getPcNrPva() { return pcNrPva; }

public void setPcNrPva(final String pcNrPva) { String oldValue = this.pcNrPva; this.pcNrPva = pcNrPva; firePropertyChangeEvent("pcNrPva", oldValue, this.pcNrPva); }

@Column(name = "MWST_NR", nullable = false, length = 10) private Long mwstNr;

public Long getMwstNr() { return mwstNr; }

public void setMwstNr(final Long mwstNr) { Long oldValue = this.mwstNr; this.mwstNr = mwstNr; firePropertyChangeEvent("mwstNr", oldValue, this.mwstNr); }

@Column(name = "J_VERSION", nullable = false, insertable = false, updatable = false, length = 22)@org.hibernate.annotations.Generated(org.hibernate.annotations.GenerationTime.ALWAYS) @Version private Long jVersion;

public Long getJVersion() { return jVersion; }

public void setJVersion(final Long jVersion) { Long oldValue = this.jVersion; this.jVersion = jVersion; firePropertyChangeEvent("jVersion", oldValue, this.jVersion); }

@Column(name = "IBAN", nullable = false, length = 34) private String iban;

public String getIban() { return iban; }

public void setIban(final String iban) { String oldValue = this.iban; this.iban = iban; firePropertyChangeEvent("iban", oldValue, this.iban); }

@Column(name = "BUCHUNGSKREIS_NR", nullable = false, length = 4) private Long buchungskreisNr;

public Long getBuchungskreisNr() { return buchungskreisNr; }

public void setBuchungskreisNr(final Long buchungskreisNr) { Long oldValue = this.buchungskreisNr; this.buchungskreisNr = buchungskreisNr; firePropertyChangeEvent("buchungskreisNr", oldValue, this.buchungskreisNr); }

}

Entity

BuchungskreiseF

Id

Long bkrId

String kontoNr

nullable = false

nullable = false 45

BUCHUNGSKREISE_F

BKR_ID

KONTO_NR

BKR_SEQ

@SuppressWarnings("serial")@Entity@Table(name = "BUCHUNGSKREISE_F")public class BuchungskreiseF extends AbstractEntity implements Serializable {

@SuppressWarnings("unused") @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "bkrIdSeq") @SequenceGenerator(name = "bkrIdSeq", sequenceName = "BKR_SEQ", allocationSize = 1) @Column(name = "BKR_ID", nullable = false) private Long bkrId;

public Long getBkrId() { return bkrId; }

public void setBkrId(final Long bkrId) { this.bkrId = bkrId; }

@Column(name = "KONTO_NR", nullable = false, length = 45) private String kontoNr;

public String getKontoNr() { return kontoNr; }

public void setKontoNr(final String kontoNr) { String oldValue = this.kontoNr; this.kontoNr = kontoNr; firePropertyChangeEvent("kontoNr", oldValue, this.kontoNr); }

@Column(name = "RG_NR_BKR_IDENTIFIKATOR", nullable = false, length = 1) private Long rgNrBkrIdentifikator;

public Long getRgNrBkrIdentifikator() { return rgNrBkrIdentifikator; }

public void setRgNrBkrIdentifikator(final Long rgNrBkrIdentifikator) { Long oldValue = this.rgNrBkrIdentifikator; this.rgNrBkrIdentifikator = rgNrBkrIdentifikator; firePropertyChangeEvent("rgNrBkrIdentifikator", oldValue, this.rgNrBkrIdentifikator); }

@Column(name = "REFERENZCODE_KONTO_NR", nullable = false, length = 45) private String referenzcodeKontoNr;

public String getReferenzcodeKontoNr() { return referenzcodeKontoNr; }

public void setReferenzcodeKontoNr(final String referenzcodeKontoNr) { String oldValue = this.referenzcodeKontoNr; this.referenzcodeKontoNr = referenzcodeKontoNr; firePropertyChangeEvent("referenzcodeKontoNr", oldValue, this.referenzcodeKontoNr); }

@Column(name = "PC_NR_RG", nullable = false, length = 45) private String pcNrRg;

public String getPcNrRg() { return pcNrRg; }

public void setPcNrRg(final String pcNrRg) { String oldValue = this.pcNrRg; this.pcNrRg = pcNrRg; firePropertyChangeEvent("pcNrRg", oldValue, this.pcNrRg); }

@Column(name = "PC_NR_PVA", nullable = false, length = 45) private String pcNrPva;

public String getPcNrPva() { return pcNrPva; }

public void setPcNrPva(final String pcNrPva) { String oldValue = this.pcNrPva; this.pcNrPva = pcNrPva; firePropertyChangeEvent("pcNrPva", oldValue, this.pcNrPva); }

@Column(name = "MWST_NR", nullable = false, length = 10) private Long mwstNr;

public Long getMwstNr() { return mwstNr; }

public void setMwstNr(final Long mwstNr) { Long oldValue = this.mwstNr; this.mwstNr = mwstNr; firePropertyChangeEvent("mwstNr", oldValue, this.mwstNr); }

@Column(name = "J_VERSION", nullable = false, insertable = false, updatable = false, length = 22)@org.hibernate.annotations.Generated(org.hibernate.annotations.GenerationTime.ALWAYS) @Version private Long jVersion;

public Long getJVersion() { return jVersion; }

public void setJVersion(final Long jVersion) { Long oldValue = this.jVersion; this.jVersion = jVersion; firePropertyChangeEvent("jVersion", oldValue, this.jVersion); }

@Column(name = "IBAN", nullable = false, length = 34) private String iban;

public String getIban() { return iban; }

public void setIban(final String iban) { String oldValue = this.iban; this.iban = iban; firePropertyChangeEvent("iban", oldValue, this.iban); }

@Column(name = "BUCHUNGSKREIS_NR", nullable = false, length = 4) private Long buchungskreisNr;

public Long getBuchungskreisNr() { return buchungskreisNr; }

public void setBuchungskreisNr(final Long buchungskreisNr) { Long oldValue = this.buchungskreisNr; this.buchungskreisNr = buchungskreisNr; firePropertyChangeEvent("buchungskreisNr", oldValue, this.buchungskreisNr); }

}

Entity

BuchungskreiseF

Id

Long bkrId

String kontoNr

nullable = false

nullable = false 45

BUCHUNGSKREISE_F

BKR_ID

KONTO_NR

BKR_SEQ

entity BuchungskreiseF (id=bkrId sequenceName=BKR_SEQ) {

String kontoNr

Long rgNrBkrIdentifikator

String referenzcodeKontoNr

}

(notNull, length=45)

(notNull, length=45)

(notNull, length=1)

External DSL with TMF Xtext


String kontoNr



}



String kontoNr



}

BUCHUNGSKREISE_F

RG_NR_BKR_IDENTIFIKATOR


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

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

Database Schema

TABLE BUCHUNGSKREISE_F

ID NAME PROP1 DATE ATTR1








0 TZ

60 TZ

120 TZ

180 TZ

240 TZ

300 TZ

0 20 40

30.000 (DSL)+ 50.000 (code generator)+ 170 / Entity

7000 / Entity

Number of Characters (Domain model DSL)

With DSL

Without DSL

11 Entities

Views

public class PersonenForm extends Form<Personen> {



public class PersonenHauptSubForm extends SubForm<Personen> {





private JComponent vornameTextField;







@Overrideprotected void initComponents() {

...vornameTextField = builder.createTextField(desc.vorname(),

Editable.PROPERTY_DEFAULT, MANDATORY);

gepardBuilder.setNoLeadingBlanks(vornameTextField);















@Override protected JComponent buildPanel() {

TwoColumnsPanelBuilder builder = TwoColumnsPanelBuilder.instance(getBuilderFactory(),

getResourceMap());...builder.add("vorname", vornameTextField);








@Override protected JComponent buildPanel() {

TwoColumnsPanelBuilder builder = TwoColumnsPanelBuilder.instance(getBuilderFactory(),

getResourceMap());...builder.add("vorname", 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









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)) {

Referencing

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


Eliminate framework codeAvoid repetitive null pointer checks


Eliminate framework codeAvoid repetitive null pointer checksUse static imports


Eliminate framework codeAvoid repetitive null pointer checksUse static importsUse and define library methods

error("validation.esr.msg", desc.esrNr());

@Check void checkEsrMsg() { if (!checkKontoNrPruefziffer(parseLong(_this.getEsrNr()))) error("validation.esr.msg",desc.esrNr()); }

Internal DSL in Java

• Junit-like• catches null pointer exceptions

Why do we want to

abstract?

RequirementsSpecificationDesignCodingUnit TestingIntegrationMaintenance

Software Life-Cycle Costs (Schach 2002)

2%



5%2%



6%5%2%



5%

6%5%2%



7%

5%

6%5%2%



8%

7%

5%

6%5%2%



67%

8%

7%

5%

6%5%2%



Software maintenance - proportional costs

Software maintenance - proportional costs

Software Rots

Finance related applications of Eclipse Modeling

Questions ?

Technology

Eclipse Banking Day