Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I've not seen any plugins that do this, but it seems a reasonable shortcut to me.</p> <p>The following could form the basis for a plugin to generate a class directly from a selected interface. It works on my box(TM).</p> <p>It currently assumes the class will take the interface name suffixed with "Impl" and fails (logging the reason) if that type already exists.</p> <p>Some enhancements I can think of:</p> <ul> <li>allow selection of multiple interfaces</li> <li>define a preference page for the implementation suffix and package name</li> <li>open a dialogue with the values populated if the "default" implementation already exists</li> </ul> <p>The plugin adds a command to the context menu for editors, views and text selections, disabling the item if the selection doesn't resolve to an interface. It can also be activated with <kbd>ctrl-6</kbd> (you can obviously change the key-bindings in the plugin.xml to suit your mood).</p> <p>The plugin code is as follows:</p> <pre><code>package name.seller.rich.classwizard.actions; import java.util.Collections; import org.eclipse.core.commands.AbstractHandler; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.expressions.EvaluationContext; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.jdt.core.ICompilationUnit; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.internal.ui.JavaPlugin; import org.eclipse.jdt.internal.ui.actions.SelectionConverter; import org.eclipse.jdt.ui.wizards.NewClassWizardPage; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.PartInitException; import org.eclipse.ui.handlers.HandlerUtil; import org.eclipse.ui.ide.IDE; import org.eclipse.ui.wizards.newresource.BasicNewResourceWizard; public class GenerateClassHandler extends AbstractHandler { public GenerateClassHandler() { } public Object execute(ExecutionEvent event) throws ExecutionException { NewClassWizardPage page = new NewClassWizardPage(); EvaluationContext evaluationContext = (EvaluationContext) event .getApplicationContext(); IWorkbenchPart activePart = (IWorkbenchPart) evaluationContext .getVariable("activePart"); try { IStructuredSelection selection = SelectionConverter .getStructuredSelection(activePart); IType type = getFirstType(selection); if (type != null &amp;&amp; type.exists() &amp;&amp; type.isInterface()) { page.init(selection); String typeName = type.getElementName() + "Impl"; // TODO handle existing type page.setTypeName(typeName, true); // generate constructors and methods, allow modification page.setMethodStubSelection(false, true, true, true); page.setSuperInterfaces(Collections.singletonList(type .getFullyQualifiedName()), true); try { page.createType(new NullProgressMonitor()); IResource resource = page.getModifiedResource(); if (resource != null) { IWorkbenchWindow window = HandlerUtil .getActiveWorkbenchWindowChecked(event); BasicNewResourceWizard .selectAndReveal(resource, window); openResource((IFile) resource, window); } } catch (CoreException e) { // TODO if we get this the type already exists, open a // dialogue to allow the type name to be modified or give // up? logException(e); } } } catch (JavaModelException e) { logException(e); } catch (InterruptedException e) { logException(e); } return null; } protected void openResource(final IFile resource, IWorkbenchWindow window) { final IWorkbenchPage activePage = window.getActivePage(); if (activePage != null) { final Display display = window.getShell().getDisplay(); if (display != null) { display.asyncExec(new Runnable() { public void run() { try { IDE.openEditor(activePage, resource, true); } catch (PartInitException e) { logException(e); } } }); } } } @Override public void setEnabled(Object context) { if (context != null &amp;&amp; context instanceof EvaluationContext) { EvaluationContext evaluationContext = (EvaluationContext) context; IWorkbenchPart activePart = (IWorkbenchPart) evaluationContext .getVariable("activePart"); try { IStructuredSelection selection = SelectionConverter .getStructuredSelection(activePart); IType type = getFirstType(selection); if (type != null) { setBaseEnabled(type.isInterface()); return; } } catch (JavaModelException e) { logException(e); } } setBaseEnabled(false); } private IType getFirstType(IStructuredSelection selection) { IJavaElement[] elements = SelectionConverter.getElements(selection); if (elements != null &amp;&amp; elements.length &gt; 0) { if (elements[0] != null &amp;&amp; elements[0] instanceof IType) { return (IType) elements[0]; } try { if (elements[0] != null &amp;&amp; elements[0] instanceof ICompilationUnit) { IType[] types = ((ICompilationUnit) elements[0]) .getAllTypes(); if (types != null &amp;&amp; types.length &gt; 0) { return types[0]; } } } catch (JavaModelException e) { logException(e); } } return null; } protected void logException(Exception e) { JavaPlugin.log(e); } } </code></pre> <p>The plugin.xml to contribute the command is:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;?eclipse version="3.0"?&gt; &lt;plugin&gt; &lt;extension point="org.eclipse.ui.commands"&gt; &lt;command name="Generate Class" categoryId="name.seller.rich.classwizard.category" id="name.seller.rich.classwizard.generateClassCommand"&gt; &lt;/command&gt; &lt;/extension&gt; &lt;extension point="org.eclipse.ui.handlers"&gt; &lt;handler commandId="name.seller.rich.classwizard.generateClassCommand" class="name.seller.rich.classwizard.actions.GenerateClassHandler"&gt; &lt;/handler&gt; &lt;/extension&gt; &lt;extension point="org.eclipse.ui.bindings"&gt; &lt;key commandId="name.seller.rich.classwizard.generateClassCommand" contextId="org.eclipse.ui.contexts.window" sequence="M1+6" schemeId="org.eclipse.ui.defaultAcceleratorConfiguration"&gt; &lt;/key&gt; &lt;/extension&gt; &lt;extension point="org.eclipse.ui.menus"&gt; &lt;menuContribution locationURI="popup:org.eclipse.ui.popup.any?after=additions"&gt; &lt;command commandId="name.seller.rich.classwizard.generateClassCommand" mnemonic="G"&gt; &lt;/command&gt; &lt;/menuContribution&gt; &lt;/extension&gt; &lt;/plugin&gt; </code></pre> <p>and the manifest.mf looks like this:</p> <pre><code>Manifest-Version: 1.0 Bundle-ManifestVersion: 2 Bundle-Name: Classwizard Bundle-SymbolicName: name.seller.rich.classwizard; singleton:=true Bundle-Version: 1.0.0 Require-Bundle: org.eclipse.ui, org.eclipse.core.runtime, org.eclipse.jdt.core;bundle-version="3.5.0", org.eclipse.core.expressions;bundle-version="3.4.100", org.eclipse.jface.text;bundle-version="3.5.0", org.eclipse.jdt.ui;bundle-version="3.5.0", org.eclipse.ui.ide;bundle-version="3.5.0", org.eclipse.ui.editors;bundle-version="3.5.0", org.eclipse.core.resources;bundle-version="3.5.0" Eclipse-AutoStart: true Bundle-RequiredExecutionEnvironment: JavaSE-1.6 </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POQuickly create class from an interface in eclipse
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USRich Seller
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POQuickly create class from an interface in eclipse
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload