プラグイン-データモデル
このセクションでは、データモデルを含む別個のecliseプラグインを作成します（ユーザーインターフェイスからデータを分離することは、ご存じのように良い口調です）
プラグインを作成する
プラグインを作成した後、必要な依存関係を記述します。
そして、 MANIFEST.MF
ファイルに行を追加します（単一のクラスローダーを使用するには、hibernateライブラリを操作するときに必要です）。
Eclipse-RegisterBuddy: org.fishbolt.model.hibernate.annotations
データオブジェクトクラスとデータオブジェクトマネージャーを作成する
部門データオブジェクト：
/**<br>* Data object presenting department<br>*/<br>@DisplayLabel("Department")<br>@ImageResource("department.gif")<br>@Entity<br>@Tuplizer(impl = CompanyModelTuplizer.class)<br>@AccessType("org.fishbolt.model.hibernate.FieldAccessor")<br>public class Department <br> extends HDataObject<DepartmentManager> {<br><br><br> @Id<br> @GeneratedValue<br> @DisplayLabel("Identity")<br> public final static FieldDeclaration<Integer> id = <br> new FieldDeclaration<Integer>(Department.class);<br><br> @ObjectPresentationField<br> @Column(unique=true, nullable=false)<br> @DisplayLabel("Name")<br> @Width(250)<br> public final static FieldDeclaration<String> name = <br> new FieldDeclaration<String>(Department.class);<br><br><br> @DisplayLabel("Employees")<br> @Relation(inverse="department")<br> @OneToMany(targetEntity=Employee.class)<br> @JoinColumn(name="department")<br> public final static FieldDeclaration<Set<Employee>> employees = <br> new FieldDeclaration<Set<Employee>>(Department.class);<br> <br> public Department(DepartmentManager manager) {<br> super(manager);<br> }<br> <br> public Department() {<br> super();<br> }<br>}<br>
部門データオブジェクトマネージャー：
/**<br> * Manager class for {@link Department} data object.<br> */<br>public class DepartmentManager <br> extends HDataObjectManager<Department,Integer>{<br> <br> /**<br> * Constructor inherited from the super class<br> */<br> public DepartmentManager(IDataModel dataModel,<br> ObjectDescriptor<?,?> objectDescriptor) {<br> super(dataModel, objectDescriptor);<br> }<br><br> /**<br> * Searches for a department by its name<br> * @param name - the name of the department to search for<br> * @return department or <code>null</code><br> */<br> public Department findDepartment(String name){<br> String hql = "from Department where name=?";<br> QueryUniqueResultCommand<Department> cmd = <br> new QueryUniqueResultCommand<Department>(hql);<br> cmd.setParameters(new Parameter(name));<br> return this.getModel().processCommand(cmd);<br> }<br>}<br>
従業員データオブジェクト：
/**<br> * Data object presenting employee<br> */ <br>@DisplayLabel("Employee")<br>@ImageResource("employee.gif")<br>@Entity<br>@Tuplizer(impl = CompanyModelTuplizer.class)<br>@AccessType("org.fishbolt.model.hibernate.FieldAccessor")<br>public class Employee extends HDataObject<EmployeeManager> {<br> <br> @Id<br> @GeneratedValue<br> @DisplayLabel("Identity")<br> public final static FieldDeclaration<Integer> id = <br> new FieldDeclaration<Integer>(Employee.class);<br><br> @Transient<br> @ObjectPresentationField<br> @DisplayLabel("Name")<br> @Width(250)<br> public final static FieldDeclaration<String> name = <br> new FieldDeclaration<String>(Employee.class);<br><br> @Column(nullable=false)<br> @DisplayLabel("First Name")<br> public final static FieldDeclaration<String> firstName = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @Column(nullable=false)<br> @DisplayLabel("Last Name")<br> public final static FieldDeclaration<String> lastName = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @DisplayLabel("Phone Number")<br> public final static FieldDeclaration<String> phoneNumber = <br> new FieldDeclaration<String>(Employee.class);<br> <br> @SimpleDateFormatPresentation("dd/MM/yyyy")<br> @DisplayLabel("Birthday")<br> public final static FieldDeclaration<Date> birthday = <br> new FieldDeclaration<Date>(Employee.class);<br><br> @DisplayLabel("Salary")<br> @Column(nullable=false)<br> @DecimalFormatPresentation("#,##0.00")<br> @PresentationDecorator(prefix="$ ")<br> public final static FieldDeclaration<BigDecimal> salary = <br> new FieldDeclaration<BigDecimal>(Employee.class);<br> <br> @DisplayLabel("Health")<br> @NumberFormatPresentation(NumberFormatInstance.percent)<br> public final static FieldDeclaration<Double> health = <br> new FieldDeclaration<Double>(Employee.class);<br> <br> @DisplayLabel("Department")<br> @Relation(inverse="employees")<br> @ManyToOne(optional=false)<br> @JoinColumn(name="department")<br> public final static FieldDeclaration<Department> department = <br> new FieldDeclaration<Department>(Employee.class);<br> <br> public Employee(EmployeeManager manager) {<br> super(manager);<br> }<br> <br> public Employee() {<br> super();<br> }<br>}<br>
マネージャーデータオブジェクト「従業員」：
/**<br> * Manager class for {@link Employee} data object.<br> */<br>public class EmployeeManager <br> extends HDataObjectManager<Employee,Integer>{<br> <br> /**<br> * Constructor inherited from the super class<br> */<br> public EmployeeManager(IDataModel dataModel,<br> ObjectDescriptor<?,?> objectDescriptor) {<br> super(dataModel, objectDescriptor);<br> }<br><br> /**<br> * Searches for an employee among all employees of a company<br> * @param firstName - employee's first name<br> * @param lastName - employee's last name<br> * @return <code>List</code> of employees<br> */<br> public List<Employee> findEmployee(String firstName,String lastName){<br> String hql = "from Employee where firstName=? and lastName = ?";<br> QueryListCommand<Employee> cmd = new QueryListCommand<Employee>(hql);<br> cmd.setParameters(<br> new Parameter(firstName),<br> new Parameter(lastName));<br> return this.getModel().processCommand(cmd);<br> }<br> <br> /**<br> * Searches for an employee in a department <br> * @param firstName - employee's first name<br> * @param lastName - employee's last name<br> * @param department<br> * @return <code>List</code> of employees<br> */<br> public List<Employee> findEmployee(String firstName,String lastName, Department department){<br> String hql = "from Employee where firstName=? and lastName=? and department=?";<br> QueryListCommand<Employee> cmd = new QueryListCommand<Employee>(hql);<br> cmd.setParameters(<br> new Parameter(firstName),<br> new Parameter(lastName),<br> new Parameter(department));<br> return this.getModel().processCommand(cmd);<br> }<br>}<br>
データモデルクラスの宣言
/**<br> * Company model class<br> */<br>public class CompanyModel extends DataModel {<br> <br> public final static <br> ObjectDescriptor<EmployeeManager,Employee> employee = <br> new EObjectDescriptor<EmployeeManager,Employee>(CompanyModel.class);<br> <br> public final static <br> ObjectDescriptor<DepartmentManager,Department> department = <br> new EObjectDescriptor<DepartmentManager,Department>(CompanyModel.class);<br> <br> public static ModelDescriptor getDescriptor(){<br> return CompanyModel.department.getModelDescriptor();<br> }<br> <br> private static CompanyModel instance;<br> <br> public static CompanyModel getInstance(){<br> return (instance == null) ? <br> instance = new CompanyModel(getDescriptor()) : <br> instance;<br> }<br><br> private CompanyModel(ModelDescriptor modelDescriptor) {<br> super(modelDescriptor);<br> } <br>}<br>
Hibernateをカスタマイズする
いくつかのTuplizerクラスを作成しましょう（同じ名前のデータオブジェクトクラスのアノテーションで説明されています）。
public class CompanyModelTuplizer extends DataObjectTuplizer {<br><br> /**<br> * Constructor inherited from the super class<br> */<br> public CompanyModelTuplizer(EntityMetamodel entityMetamodel, <br> PersistentClass mappedEntity) {<br> super(entityMetamodel, mappedEntity);<br> }<br><br> @Override<br> protected ModelDescriptor getModelDescriptor() {<br> return CompanyModel.getDescriptor();<br> }<br>}<br>
hibernate.cfg.xml
作成し
hibernate.cfg.xml
<?xml version='1.0' encoding='utf-8'?><br><!DOCTYPE hibernate-configuration PUBLIC<br> "-//Hibernate/Hibernate Configuration DTD//EN"<br> "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><br> <br><hibernate-configuration><br> <session-factory><br> <property name="hibernate.dialect"><br> org.hibernate.dialect.PostgreSQLDialect<br> </property><br> <property name="hibernate.connection.driver_class"><br> org.postgresql.Driver<br> </property><br> <property name="hibernate.connection.url"><br> jdbc:postgresql://localhost/company<br> </property><br> <property name="hibernate.connection.username"><br> postgres<br> </property><br> <property name="hibernate.connection.password"><br> ********<br> </property><br> <br> <mapping class="example.model.objects.Department"/><br> <mapping class="example.model.objects.Employee"/><br> </session-factory><br></hibernate-configuration><br><br>
計算フィールド
従業員データオブジェクトには、
name
フィールドが含まれて
name
ます。 このフィールドは計算されるため、データベースには反映されません。 以下に、このフィールドを計算するためのアルゴリズムを実装します。
public class EmployeeFullNameCalculation <br> implements IFieldCalculation<String> {<br> <br> public FieldPath[] getInfluencingPaths(FieldDescriptor<String> dependent) {<br> return new FieldPath[]{<br> new FieldPath(true, CompanyModel.employee,Employee.firstName),<br> new FieldPath(true, CompanyModel.employee,Employee.lastName)<br> };<br> }<br><br> public String evaluateValue(IDataField<String> toEvaluate) {<br> Employee employee = (Employee)toEvaluate.getDataObject();<br> return ModelUtil.getValue(employee,Employee.firstName)+<br> " " + ModelUtil.getValue(employee,Employee.lastName);<br> }<br>}<br>
実装された計算アルゴリズムをコードのデータフィールドに接続します
public class CompanyCalculationProviderFactory <br> extends FieldCalculationProviderFactorySafe{<br><br> /**<br> * Binds calculated fields with calculation classes<br> */<br> @Override<br> protected void bindCalculations() {<br> // binding <code>Employee.name</code> with <code>EmployeeFullNameCalculation</code><br> bindCalculation(CompanyModel.employee,Employee.name, <br> new EmployeeFullNameCalculation());<br> <br> }<br>}<br>
プラグインマニフェストの変更
ファクトリプロバイダーを登録します
ModelAdapterFactory
ポイントの拡張を宣言します。
plugin.xml
ファイル
plugin.xml
ようになります。
<?xml version="1.0" encoding="UTF-8"?><br><?eclipse version="3.2"?><br><plugin><br> <extension<br> point="org.fishbolt.model.ModelAdapterFactory"><br> <model class="example.model.CompanyModel"><br> <factory class="example.model.calculations.CompanyCalculationProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.compare.ComparatorProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.listener.ListenerRegistryAdapterFactory"/><br> <factory class="org.fishbolt.model.ext.width.WidthProviderFactory"/><br> <factory class="org.fishbolt.model.ext.image.ObjectImageProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.presenter.HPresenterProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.calculate.HInfluencingFieldProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.state.FieldStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HObjectStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HFieldDescriptorStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.state.HObjectDescriptorStateFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.field.HFieldManagerProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.object.HObjectManagerProviderFactory"/><br> <factory class="org.fishbolt.model.memory.ext.label.LabelProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.provider.HModelProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.annotations.provider.AnnotationConfigurationProviderFactory"/><br> <factory class="org.fishbolt.model.hibernate.ext.lo.HLargeObjectProviderFactory"/><br> </model><br> </extension><br></plugin>
パッケージをエクスポートします。
そして、データベースにドライバーライブラリを追加します。
結果としてのプラグイン
データベーステーブルを作成する
会社のデータベース（Postgres-サーバー）を作成しましょう。 そして、テーブルを作成します。
CREATE TABLE department<br>(<br> id integer NOT NULL,<br> name character varying(255) NOT NULL,<br> CONSTRAINT department_pkey PRIMARY KEY (id),<br> CONSTRAINT department_name_key UNIQUE (name)<br>)<br><br>CREATE TABLE employee<br>(<br> id integer NOT NULL,<br> firstname character varying(255) NOT NULL,<br> lastname character varying(255) NOT NULL,<br> phonenumber character varying(255),<br> birthday date,<br> health double precision,<br> parttime boolean,<br> salary numeric(19,2),<br> department integer NOT NULL,<br> CONSTRAINT employee_pkey PRIMARY KEY (id),<br> CONSTRAINT fk4afd4acec0414ee2 FOREIGN KEY (department)<br> REFERENCES department (id) <br>)<br>
プラグイン-ユーザーインターフェイス
ユーザーインターフェイスプラグインを作成し、依存関係を追加する
ご覧のとおり、依存関係には、以前に作成したプラグイン-データモデル（ example.org.fishbolt.model.hibernate.annotations
）があり
example.org.fishbolt.model.hibernate.annotations
データオブジェクトを作成するためのウィザード
ウィザードクラスを作成して、データオブジェクトを作成します。 以下は、Employeeデータオブジェクトのウィザードコードです。
/**<br> * Wizard for adding new employees<br> */<br>public class NewEmployeeWizard extends ObjectNewWizard {<br><br> public NewEmployeeWizard() {<br> // indicating the descriptor of a data object<br> // whose instances will be created by the wizard<br> super(CompanyModel.employee);<br> }<br> <br> @Override<br> protected IDataModel getDataModel(IWorkbench workbench, <br> IStructuredSelection selection) {<br> // providing a reference to the data model<br> // to which new Employee instances will be added<br> return CompanyModel.getInstance();<br> }<br><br> @SuppressWarnings("unchecked")<br> @Override<br> public void init(IWorkbench workbench, <br> IStructuredSelection selection){<br> super.init(workbench, selection);<br> // setting a default value to Employee.department<br> Object selectionObject = selection.getFirstElement();<br> if (selectionObject instanceof Department){<br> ModelUtil.setValue(this.wizardObject,<br> Employee.department,(Department)selectionObject);<br> }<br><br> String name = <br> LabelProvider.getDisplayLabel(CompanyModel.employee);<br> <br> // adding pages for step-by-step creation of Employee instances<br> this.addPage(<br> new ObjectSimpleWizardPage(name,name,null,<br> Employee.firstName,<br> Employee.lastName,<br> Employee.department,<br> Employee.phoneNumber));<br> this.addPage(<br> new ObjectSimpleWizardPage(name,name,null,<br> Employee.birthday,<br> Employee.salary,<br> Employee.health));<br> }<br>}<br>
対応する拡張機能を登録する
タイプ「従業員」のオブジェクトを作成するためのウィザードの最初のページは次のとおりです。 
ユーザーインターフェイスコマンド（UIアクション）のコードを追加します。これにより、「従業員」オブジェクトの作成に関するウィザードのダイアログが開きます
public class OpenNewEmployeeWizardAction extends OpenNewWizardAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenNewEmployeeWizardAction(ViewerController controller) {<br> super(controller, "New Employee...","Creates a new employee");<br> }<br><br> @Override<br> public INewWizard getNewWizard() {<br> return new NewEmployeeWizard();<br> }<br> <br> @Override<br> public void updateEnable() {<br> this.setEnabled(getActionObject() instanceof Department);<br> }<br>}
データオブジェクトのエディター
データオブジェクトのエディターファクトリクラスを作成する
/**<br> * EditorFactory for <code>Employee</code>s<br> */<br>public class EmployeeEditorFactory extends EditorFactory {<br><br> EmployeeEditorFactory() {<br> // Indicating an Employee object via its descriptor<br> // and creating editor pages <br> super(CompanyModel.employee,<br> new SimpleEditorPageFactory(<br> "Personal information", <br> Employee.firstName,<br> Employee.lastName,<br> Employee.phoneNumber,<br> Employee.birthday,<br> Employee.health),<br> new SimpleEditorPageFactory(<br> "Department information",<br> Employee.department,<br> Employee.salary)<br> );<br> }<br>}
/**<br> * EditorFactory for <code>Department</code>s<br> */<br>public class DepartmentEditorFactory extends EditorFactory {<br><br> DepartmentEditorFactory() {<br> // Indicating a Department object via its descriptor<br> // and creating editor pages <br> super(CompanyModel.department,<br> new SimpleEditorPageFactory(<br> LabelProvider.getDisplayLabel(CompanyModel.department), <br> Department.name)<br> );<br> }<br>}<br>
また、クラス-エディタープロバイダーを作成して登録する必要があります。
public class CompanyEditorProvider extends EditorProvider {<br> <br> public CompanyEditorProvider(){<br> register(new DepartmentEditorFactory());<br> register(new EmployeeEditorFactory());<br> }<br>}
そして、エディターを宣言します。
タイプ「Employee」のオブジェクト用に作成されたエディターは次のとおりです。 
データオブジェクトのエディターを開くユーザーインターフェイスコマンド（UIアクション）のコードを追加します。
public class OpenInEditorAction extends OpenEditorAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenInEditorAction(ViewerController controller) {<br> super("example.model.eclipse.DataObjectEditor", controller);<br> }<br>}
たとえば、特別な視点でデータオブジェクトのエディターを開くユーザーインターフェイスコマンド（UIアクション）のコードも追加します。
public class OpenInEditorPerspectiveAction extends OpenEditorPerspectiveAction {<br><br> @SuppressWarnings("unchecked")<br> public OpenInEditorPerspectiveAction(ViewerController controller) {<br> super("example.model.eclipse.perspectives.ObjectEditorPerspective",<br> "example.model.eclipse.DataObjectEditor",<br> controller);<br> }<br>}
データフィールド値を変更するためのダイアログ
以下は、ある部門から別の部門に従業員を転送するダイアログボックスクラスです。
/**<br> * Dialog that moves an employee from one department to another<br> */<br>public class ChangeDepartmentDialog <br> extends Dialog implements IWidgetsContext{<br> <br> private Employee employee;<br> private ContextControllerBinder contextBinder;<br><br> public ChangeDepartmentDialog(Shell parentShell,Employee employee) {<br> super(parentShell);<br> this.employee = employee;<br> }<br><br> /**<br> * Returns ContextControllerBinder that binds<br> * user interface components with data model components<br> * through controllers<br> */<br> public ContextControllerBinder getContextBinder() {<br> return contextBinder == null ? <br> contextBinder = new ContextControllerBinder(this) : contextBinder;<br> }<br><br> /**<br> * Creates dialog's contents <br> * and binds user interface components with data model components<br> */<br> @Override <br> protected Control createDialogArea(Composite parent) <br> {<br> // dialog title<br> parent.getShell().setText(PresenterProvider.getPresentation(employee));<br> <br> Composite result = new Composite(parent, SWT.NONE);<br> result.setLayout(new GridLayout(2, true));<br><br> Label decription = new Label(result, SWT.NULL);<br> decription.setLayoutData(<br> new GridData(GridData.FILL,GridData.FILL,true,true,2,1));<br> decription.setText("To move the employee to another department, " +<br> "select the department and press OK.");<br> <br> // Label presenting the data object field<br> Label label = new Label(result, SWT.NULL);<br> label.setLayoutData(new GridData());<br> <br> // Combo presenting data field values<br> Combo combo = new Combo(result, SWT.BORDER | SWT.DROP_DOWN);<br> combo.setLayoutData(<br> new GridData(GridData.FILL,GridData.CENTER,true,false));<br> <br> ContextControllerBinder binder = getContextBinder();<br> // binding Label to FieldDescriptor <br> // (the controller that is responsible for interaction<br> // between Label and FieldDescriptor is created automatically)<br> binder.bind(label, <br> CompanyModel.employee.getFieldDescriptor(Employee.department));<br> // binding data field to Combo <br> // (the controller that is responsible for interaction<br> // between data field and Combo is created automatically)<br> binder.bind(combo, <br> employee.getDataField(Employee.department)); <br> <br> return result;<br> }<br><br><br> /**<br> * Reacts to changes resulted from user's actions on the UI<br> * components (controls) that were bound to data model<br> * components using ContextControllerBinder<br> */<br> @SuppressWarnings("unchecked")<br> public void contextWidgetChanged(<br> EditableWidgetController<Widget, Object, Object> controller,<br> PresentationException exception) {<br> if (exception!= null){<br> MessageDialog.openError(this.getShell(), <br> "The value is incorrect.",<br> "Please specify a correct value.");<br> return;<br> }<br> Collection<ValidationMessage<IDataObject, Severity>> problems <br> = employee.validate(null);<br> <br> if (problems.isEmpty()) return;<br> <br> showProblems(problems);<br> <br> employee.refresh();<br> }<br> <br> /**<br> * Shows information about the data object problems<br> * @param problems<br> */<br> protected void showProblems(<br> Collection<ValidationMessage<IDataObject, Severity>> problems){<br> StringBuffer msg = new StringBuffer();<br> for (ValidationMessage<IDataObject, Severity> problem : problems){<br> msg.append(problem.getDescription());<br> msg.append("\\;n");<br> }<br> <br> MessageDialog.openError(this.getShell(), <br> "The value is incorrect.",msg.toString());<br> <br> }<br> <br> <br> /**<br> * Cancel button handler<br> */<br> @Override<br> protected void cancelPressed() {<br> employee.refresh();<br> super.cancelPressed();<br> }<br> <br> /**<br> * OK button handler <br> */<br> @Override<br> protected void okPressed() {<br> employee.store();<br> super.okPressed();<br> }<br>}
これは、ある部門から別の部門に従業員を転送するためのダイアログボックスです。
ツリー「部門」-「従業員」
すべての部門とその従業員を表示するツリーを作成します。
/**<br> * Creates a view that contains<br> * the tree of departments and employees<br> */<br>public class DepartmentEmployeesView extends ViewPart {<br> <br> private TreeViewerController treeController = null;<br> <br> @Override<br> public void createPartControl(Composite parent) {<br> // creating a controller for TreeViewer<br> treeController = new TreeViewerController(parent);<br> // setting layout<br> GridData data = new GridData(GridData.FILL,GridData.FILL,true,true);<br> treeController.getViewer().getControl().setLayoutData(data);<br> <br> // Using ColumnData to wrap up data objects to be represented in tree nodes.<br> // Data objects are specified through their descriptors<br> treeController.setColumnProvider(<br> new ColumnProvider(<br> new ColumnData(CompanyModel.department).add(CompanyModel.employee)));<br> <br> // Wrapping data in TreeDataObjects and passing it to the controller.<br> // To put it in more details:<br> // - indicating data objects to be represented in parent nodes.<br> // In this case, these are objects of the Deparment type.<br> // The Department objects are indicated through their manager (DepartmentManager).<br> // - indicating data objects to be represented in child nodes.<br> // They are indicated through a bidirectional association.<br> // In this case, the bidirectional association is expressed by Department.employees<br> CompanyModel model = CompanyModel.getInstance();<br> DepartmentManager manager = model.getDataObjectManager(CompanyModel.department);<br> treeController.setDataObjects(<br> new TreeDataObjects(<br> new ManagerDataObjects(manager),<br> new ChildRelation(CompanyModel.department,Department.employees)));<br><br> // building a context menu for the tree<br> ContextMenu menu = new ContextMenu();<br> menu.add(new OpenInEditorAction(treeController));<br> menu.add(new OpenInEditorPerspectiveAction(treeController));<br> menu.add(new OpenNewDepartmentWizardAction(treeController));<br> menu.add(new OpenNewEmployeeWizardAction(treeController));<br> menu.add(new ChangeEmployeeDepartmentAction(treeController));<br> menu.add(new ShowDepartmentEmployeesAction(treeController));<br> menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));<br> menu.add(new RemoveDataObjectAction(treeController));<br> treeController.setContextMenu(this.getSite(),menu);<br> }<br><br> @Override<br> public void setFocus() {<br> this.treeController.getViewer().getControl().setFocus();<br> }<br>}
対応する拡張機能を登録します（
org.eclipse.ui.views
）
私たちの努力の結果： 
従業員表
/**<br> * Creates a view that contains<br> * a table displaying information about employees<br> */<br>public class EmployeesView extends ViewPart{<br> <br> private TableViewerController tableController = null;<br><br> /**<br> * Opens the view and passes to the controller<br> * a collection of <code>Employee</code>s to be represented<br> * in a table within the view.<br> */<br> public static void setEmployees(List<? extends Employee> employess){<br> EmployeesView view = getView();<br> view.tableController.setDataObjects(<br> new CollectionDataObjects(employess));<br> }<br><br> /**<br> * Opens the view and passes to the controller<br> * a collection of <code>Employee</code>s to be represented<br> * in a table within the view.<br> * The collection of <code>Employee</code>s is specified via<br> * the association with the <code>Department</code> object (Department.employees)<br> */ <br> public static void setDepartment(Department department){<br> EmployeesView view = getView();<br> IDataField<Set<Employee>> field = <br> department.getDataField(Department.employees);<br> view.tableController.setDataObjects(new RelationDataObjects(field));<br> }<br> <br> @Override<br> public void createPartControl(Composite parent) {<br> // Creating a controller<br> tableController = new TableViewerController(parent);<br> // Setting layout<br> GridData data = new GridData(GridData.FILL,GridData.FILL,true,true);<br> tableController.getViewer().getControl().setLayoutData(data);<br> // Specifying data presentation.<br> // Passing to the controller an OddBackgroundColorPresentation instance<br> // that pastes the background of even table cells<br> // with the color specified. Default is RGB(230,230,255)<br> tableController.setDataPresenation(<br> new EvenBackgroundColorPresentation(tableController));<br> <br> // Configuring table columns.<br> // Using ColumnData to wrap up data object fields to be represented in tree nodes.<br> // (Data object fields are indicated through <code>FieldDeclaration</code>s)<br> tableController.setColumnProvider(<br> new ColumnProvider(<br> new ColumnData(CompanyModel.employee,Employee.firstName),<br> new ColumnData(CompanyModel.employee,Employee.lastName),<br> new ColumnData(CompanyModel.employee,Employee.phoneNumber),<br> new ColumnData(CompanyModel.employee,Employee.salary)));<br> <br> // Adding actions that open a dialog for column selection<br> ChangeColumnsAction.registerInMenu(this, tableController);<br> ChangeColumnsAction.registerInToolBar(this, tableController);<br> <br> // adding a context menu<br> ContextMenu menu = new ContextMenu();<br> menu.add(new OpenInEditorAction(tableController));<br> menu.add(new OpenInEditorPerspectiveAction(tableController));<br> menu.add(new ChangeEmployeeDepartmentAction(tableController));<br> menu.add(new RemoveDataObjectAction(tableController));<br> tableController.setContextMenu(this.getSite(),menu);<br><br> }<br><br> @Override<br> public void setFocus() {<br> this.tableController.getViewer().getControl().setFocus();<br> }<br><br> /**<br> * Opens EmployeesView<br> */ <br> private static EmployeesView getView(){<br> IWorkbenchPage page = PlatformUI.getWorkbench().<br> getActiveWorkbenchWindow().getActivePage();<br> EmployeesView result = null;<br> try {<br> for (IViewReference ref : page.getViewReferences()) {<br> if ("example.model.eclipse.views.EmployeesView"<br> .equals(ref.getId())) {<br> result = (EmployeesView) ref.getView(true);<br> break;<br> }<br> }<br> if (result == null) <br> result = (EmployeesView) page.showView(<br> "example.model.eclipse.views.EmployeesView");<br> } catch (PartInitException e) {<br> throw new RuntimeException(e);<br> }<br> return result;<br> }<br>}
拡張機能を追加する
結果： 
従業員検索パネル
入力したパラメーターで従業員を検索するパネルを作成し、テーブルに検索結果を表示します。
public class SearchEmployeeView extends ViewPart
implements IWidgetsContext{
private Label firstNameLabel;
private Text firstName;
private Label secondNameLabel;
private Text secondName;
private Label departmentLabel;
private DialogChooser<Department> department;
private Button searchButton;
private ContextControllerBinder contextBinder;
private SelectionAdapter doSearch = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
CompanyModel model = CompanyModel.getInstance();
EmployeeManager manager = model.getDataObjectManager(CompanyModel.employee);
String first = firstName.getText();
String second = secondName.getText();
Department d = department.getObject();
List