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• Exiting a reboot loop

  - by user12617035

  If you're in a situation where the system is panic'ing during boot, you can use # boot net -s to regain control of your system. In my case, I'd added some diagnostic code to a (PCI) driver (that is used to boot the root filesystem). There was a bug in the driver, and each time during boot, the bug occurred, and so caused the system to panic: ... 000000000180b950 genunix:vfs_mountroot+60 (800, 200, 0, 185d400, 1883000, 18aec00) %l0-3: 0000000000001770 0000000000000640 0000000001814000 00000000000008fc %l4-7: 0000000001833c00 00000000018b1000 0000000000000600 0000000000000200 000000000180ba10 genunix:main+98 (18141a0, 1013800, 18362c0, 18ab800, 180e000, 1814000) %l0-3: 0000000070002000 0000000000000001 000000000180c000 000000000180e000 %l4-7: 0000000000000001 0000000001074800 0000000000000060 0000000000000000 skipping system dump - no dump device configured rebooting... If you're logged in via the console, you can send a BREAK sequence in order to gain control of the firmware's (OBP's) prompt. Enter Ctrl-Shift-[ in order to get the TELNET prompt. Once telnet has control, enter this: telnet> send brk You'll be presented with OBP's prompt: ok You then enter the following in order to boot into single-user mode via the network: ok boot net -s Note that booting from the network under Solaris will implicitly cause the system to be INSTALLED with whatever software had last been configured to be installed. However, we are using boot net -s as a "handle" with which to get at the Solaris prompt. Once at that prompt, we can perform actions as root that will let us back out our buggy driver (ok... MY buggy driver :-)) ...and replace it with the original, non-buggy driver. Entering the boot command caused the following output, as well as left us at the Solaris prompt (in single-user-mode): Sun Blade 1500, No Keyboard Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.16.4, 1024 MB memory installed, Serial #53463393. Ethernet address 0:3:ba:2f:c9:61, Host ID: 832fc961. Rebooting with command: boot net -s Boot device: /pci@1f,700000/network@2 File and args: -s 1000 Mbps FDX Link up Timeout waiting for ARP/RARP packet Timeout waiting for ARP/RARP packet 4000 1000 Mbps FDX Link up Requesting Internet address for 0:3:ba:2f:c9:61 SunOS Release 5.10 Version Generic_118833-17 64-bit Copyright 1983-2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Booting to milestone "milestone/single-user:default". Configuring devices. Using RPC Bootparams for network configuration information. Attempting to configure interface bge0... Configured interface bge0 Requesting System Maintenance Mode SINGLE USER MODE # Our goal is to now move to the directory containing the buggy driver and replace it with the original driver (that we had saved away before ever loading our buggy driver! :-) However, since we booted from the network, the root filesystem ("/") is NOT mounted on one of our local disks. It is mounted on an NFS filesystem exported by our install server. To verify this, enter the following command: # mount | head -1 / on my-server:/export/install/media/s10u2/solarisdvd.s10s_u2dvd/latest/Solaris_10/Tools/Boot remote/read/write/setuid/devices/dev=4ac0001 on Wed Dec 31 16:00:00 1969 As a result, we have to create a temporary mount point and then mount the local disk onto that mount point: # mkdir /tmp/mnt # mount /dev/dsk/c0t0d0s0 /tmp/mnt Note that your system will not necessarily have had its root filesystem on "c0t0d0s0". This is something that you should also have recorded before you ever loaded your.. er... "my" buggy driver! :-) One can find the local disk mounted under the root filesystem by entering: # df -k / Filesystem kbytes used avail capacity Mounted on /dev/dsk/c0t0d0s0 76703839 4035535 71901266 6% / To continue with our example, we can now move to the directory of buggy-driver in order to replace it with the original driver. Note that /tmp/mnt is prefixed to the path of where we'd "normally" find the driver: # cd /tmp/mnt/platform/sun4u/kernel/drv/sparcv9 # ls -l pci\* -rw-r--r-- 1 root root 288504 Dec 6 15:38 pcisch -rw-r--r-- 1 root root 288504 Dec 6 15:38 pcisch.aar -rwxr-xr-x 1 root sys 211616 Jun 8 2006 pcisch.orig # cp -p pcisch.orig pcisch We can now synchronize any in-memory filesystem data structures with those on disk... and then reboot. The system will then boot correctly... as expected: # sync;sync # reboot syncing file systems... done Sun Blade 1500, No Keyboard Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.16.4, 1024 MB memory installed, Serial #xxxxxxxx. Ethernet address 0:3:ba:2f:c9:61, Host ID: yyyyyyyy. Rebooting with command: boot Boot device: /pci@1e,600000/ide@d/disk@0,0:a File and args: SunOS Release 5.10 Version Generic_118833-17 64-bit Copyright 1983-2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Hostname: my-host NIS domain name is my-campus.Central.Sun.COM my-host console login: ...so that's how it's done! Of course, the easier way is to never write a buggy-driver... but.. then.. we all "have an eraser on the end of each of our pencils"... don't we ? :-) "...thank you... and good night..."

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• Performance Driven Manufacturing

  Manufacturers are searching for new, creative ways to address growing demands of global manufacturing. They want the latest tools and technologies to boost performance from their operations, suppliers, partners, distributors, and extended ecosystem, and they need global views for better visibility - both internally and across the extended supply chain. In addition, operations must move information more effectively to gain real-time insight into manufacturing shop floor status. Whether it's inside the plant or outside the traditional factory walls, manufacturers are searching for solutions to help them produce more for less, lower their total cost of ownership (TCO), and improve their return on investment (ROI).

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• Social Media's and Customer Service

  - by Richard Lefebvre

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 How do you know when it’s time to change customer interaction to another channel? Find out from this interesting blog post and then watch this interesting 1'26 YouTube video /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}

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• JCP.next.3: time to get to work

  - by Patrick Curran

  As I've previously reported in this blog, we planned three JSRs to improve the JCP’s processes and to meet our members’ expectations for change. The first - JCP.next.1, or more formally JSR 348: Towards a new version of the Java Community Process - was completed in October 2011. This focused on a small number of simple but important changes to make our process more transparent and to enable broader participation. We're already seeing the benefits of these changes as new and existing JSRs adopt the new requirements. However, because we wanted to complete this JSR quickly we deliberately postponed a number of more complex items, including everything that would require modifying the JSPA (the legal agreement that members sign when they join the organization) to a follow-on JSR. The second JSR (JSR 355: JCP Executive Committee Merge) is in progress now and will complete later this year. This JSR is even simpler than the first, and is focused solely on merging the two Executive Committees into one for greater efficiency and to encourage synergies between the Java ME and Java SE platforms. Continuing the momentum to move Java and the JCP forward we have just filed the third JSR (JCP.next.3) as JSR 358: A major revision of the Java Community Process. This JSR will modify the JSPA as well as the Process Document, and will tackle a large number of complex issues, many of them postponed from JSR 348. For these reasons we expect to spend a considerable amount of time working on it - at least a year, and probably more. The current version of the JSPA was created back in 2002, although some minor changes were introduced in 2005. Since then the organization and the environment in which we operate have changed significantly, and it is now time to revise our processes to ensure that they meet our current needs. We have a long list of topics to be considered, including the role of independent implementations (those not derived from the Reference Implementation), licensing and open source, ensuring that our new transparency requirements are implemented correctly, compatibility policy and TCKs, the role of individual members, patent policy, and IP flow. The Expert Group for JSR 358, as with all process-change JSRs, consists of all members of the Executive Committees. Even though the JSR has just been filed we started discussions on the various topics several months ago (see the EC's meeting minutes for details) and our EC members - including the new members who joined within the last year or two - are actively engaged. Now it's your opportunity to get involved. As required by version 2.8 of our Process (introduced with JSR 348) we will conduct all our business in the open. We have a public java.net project where you can follow and participate in our work. All of our deliberations will be copied to a public Observer mailing list, we'll track our issues on a public Issue Tracker, and all our documents (meeting agendas and minutes, task lists, working drafts) will be published in our Document Archive. We're just getting started, but we do want your input. Please visit us on java.net where you can learn how to participate. Let's get to work...

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• Coming Soon - JavaOne Latin America 2012!

  - by reza_rahman

  Save the date for JavaOne Latin America 2012 -- 4-6 December! The conference will be held again at the Transamerica Expo Center in São Paulo, Brazil. The content is shaping up nicely. Here is a preview of some of it: Designing Java EE Applications in the Age of CDI HTML5 WebSocket and Java JAX-RS 2.0: New and Noteworthy in the RESTful Web Services API What’s New in Java Message Service 2.0 Why Should I Switch to Java SE 7 Hope to see you there! More details and registration here.

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• Unzipping in Java and FileUtil.copy

  - by Geertjan

  Via NetBeans File Systems API, which provides FileUtil.copy below, which means a dependency on NetBeans Utilities API: private void unzipEpubFile(String folder, File file) throws IOException { final AtomicBoolean canceled = new AtomicBoolean(); //define and start progress bar here... // ProgressHandle handle = // ProgressHandleFactory.createHandle( // Bundle.MSG_unpacking(zip.getName()), // new Cancellable() { // @Override // public boolean cancel() { // return canceled.compareAndSet(false, true); // } // }); //then unzip 'file' into 'root": try { List folders = new ArrayList<>(); try (InputStream is = new FileInputStream(file)) { ZipInputStream zis = new ZipInputStream(is); ZipEntry entry; while ((entry = zis.getNextEntry()) != null) { if (canceled.get()) { return; } String n = entry.getName(); File f = new File(folder, n); if (n.endsWith("/")) { if (!f.isDirectory()) { if (!f.mkdirs()) { throw new IOException("could not make " + f); } if (entry.getTime() > 0) { if (!f.setLastModified(entry.getTime())) { // oh well } } } folders.add(f); } else { //handle.progress(Bundle.MSG_creating(n)); File p = f.getParentFile(); if (!p.isDirectory() && !p.mkdirs()) { throw new IOException("could not make " + p); } try (OutputStream os = new FileOutputStream(f)) { FileUtil.copy(zis, os); } if (entry.getTime() > 0) { if (!f.setLastModified(entry.getTime())) { // oh well } } } } } //handle.switchToDeterminate(folders.size()); if (canceled.get()) { } } finally { //stop progress bar } } Mostly from NetBeans IDE sources for working with projects and ZIP files.

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• deny-uncovered-http-methods in Servlet 3.1

  - by reza_rahman

  Servlet 3.1 is a relatively minor release included in Java EE 7. However, the Java EE foundational API still contains some very important changes. One such set of features are the security enhancements done in Servlet 3.1 such as the new deny-uncovered-http-methods option. Servlet 3.1 co-spec lead Shing Wai Chan outlines the use case for the feature and shows you how to use it in a recent code example driven post. You can also check out the official specification yourself or try things out with the newly released Java EE 7 SDK.

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• Over 300 "NetBeans Platform for Beginners" Sold

  - by Geertjan

  I've noticed that the authors of "NetBeans Platform for Beginners" have started exposing the number of sales they have achieved. Below, notice the '304' (which will probably change quite quickly) at the lower left end of this screenshot: That's pretty good since the book has only existed for a few months and developers tend to share books they buy in PDF format. That probably means there are 300 teams of software developers around the world who are using the book, which is pretty awesome. (Though it would help the authors significantly, I'm sure, if individual developers on teams would buy the book, rather than sharing one between them. Come on, let's support these great authors so that they'll write more books like this.) Also note that there is a set of reviewer comments on the page above: Plus, the book is updated at the end of each month, so it continues to grow and improve from month to month, for free for everyone who has bought it. If you've read the book and want to contribute a review like the above, contact walternyland @ yahoo dot com. Great work, guys! For anyone out there who hasn't got it yet: https://leanpub.com/nbp4beginners

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• Viewing the NetBeans Central Registry (Part 2)

  - by Geertjan

  Jens Hofschröer, who has one of the very best NetBeans Platform blogs (if you more or less understand German), and who wrote, sometime ago, the initial version of the Import Statement Organizer, as well as being the main developer of a great gear design & manufacturing tool on the NetBeans Platform in Aachen, commented on my recent blog entry "Viewing the NetBeans Central Registry", where the root Node of the Central Registry is shown in a BeanTreeView, with the words: "I wrapped that Node in a FilterNode to provide the 'position' attribute and the 'file extension'. All Children are wrapped too. Then I used an OutlineView to show these two properties. Great tool to find wrong layer entries." I asked him for the code he describes above and he sent it to me. He discussed it here in his blog, while all the code involved can be read below. The result is as follows, where you can see that the OutlineView shows information that my simple implementation (via a BeanTreeView) kept hidden: And so here is the definition of the Node. class LayerPropertiesNode extends FilterNode { public LayerPropertiesNode(Node node) { super(node, isFolder(node) ? Children.create(new LayerPropertiesFactory(node), true) : Children.LEAF); } private static boolean isFolder(Node node) { return null != node.getLookup().lookup(DataFolder.class); } @Override public String getDisplayName() { return getLookup().lookup(FileObject.class).getName(); } @Override public Image getIcon(int type) { FileObject fo = getLookup().lookup(FileObject.class); try { DataObject data = DataObject.find(fo); return data.getNodeDelegate().getIcon(type); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } return super.getIcon(type); } @Override public Image getOpenedIcon(int type) { return getIcon(type); } @Override public PropertySet[] getPropertySets() { Set set = Sheet.createPropertiesSet(); set.put(new PropertySupport.ReadOnly<Integer>( "position", Integer.class, "Position", null) { @Override public Integer getValue() throws IllegalAccessException, InvocationTargetException { FileObject fileEntry = getLookup().lookup(FileObject.class); Integer posValue = (Integer) fileEntry.getAttribute("position"); return posValue != null ? posValue : Integer.valueOf(0); } }); set.put(new PropertySupport.ReadOnly<String>( "ext", String.class, "Extension", null) { @Override public String getValue() throws IllegalAccessException, InvocationTargetException { FileObject fileEntry = getLookup().lookup(FileObject.class); return fileEntry.getExt(); } }); PropertySet[] original = super.getPropertySets(); PropertySet[] withLayer = new PropertySet[original.length + 1]; System.arraycopy(original, 0, withLayer, 0, original.length); withLayer[withLayer.length - 1] = set; return withLayer; } private static class LayerPropertiesFactory extends ChildFactory<FileObject> { private final Node context; public LayerPropertiesFactory(Node context) { this.context = context; } @Override protected boolean createKeys(List<FileObject> list) { FileObject folder = context.getLookup().lookup(FileObject.class); FileObject[] children = folder.getChildren(); List<FileObject> ordered = FileUtil.getOrder(Arrays.asList(children), false); list.addAll(ordered); return true; } @Override protected Node createNodeForKey(FileObject key) { AbstractNode node = new AbstractNode(org.openide.nodes.Children.LEAF, key.isFolder() ? Lookups.fixed(key, DataFolder.findFolder(key)) : Lookups.singleton(key)); return new LayerPropertiesNode(node); } } } Then here is the definition of the Action, which pops up a JPanel, displaying an OutlineView: @ActionID(category = "Tools", id = "de.nigjo.nb.layerview.LayerViewAction") @ActionRegistration(displayName = "#CTL_LayerViewAction") @ActionReferences({ @ActionReference(path = "Menu/Tools", position = 1450, separatorBefore = 1425) }) @Messages("CTL_LayerViewAction=Display XML Layer") public final class LayerViewAction implements ActionListener { @Override public void actionPerformed(ActionEvent e) { try { Node node = DataObject.find(FileUtil.getConfigRoot()).getNodeDelegate(); node = new LayerPropertiesNode(node); node = new FilterNode(node) { @Override public Component getCustomizer() { LayerView view = new LayerView(); view.getExplorerManager().setRootContext(this); return view; } @Override public boolean hasCustomizer() { return true; } }; NodeOperation.getDefault().customize(node); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } } private static class LayerView extends JPanel implements ExplorerManager.Provider { private final ExplorerManager em; public LayerView() { super(new BorderLayout()); em = new ExplorerManager(); OutlineView view = new OutlineView("entry"); view.addPropertyColumn("position", "Position"); view.addPropertyColumn("ext", "Extension"); add(view); } @Override public ExplorerManager getExplorerManager() { return em; } } }

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• OBIEE 10.1.3.4.1 patching support about to end soon

  - by THE

  To all Users of the older release OBIEE 10.1.3.4.1: Patching support for 10.1.3.4.1 ends in September (1 year after 10.1.3.4.2 patchset release).After September, there will be no more one-off patches available for 10.1.3.4.1 or lower versions.Customers may apply 10.1.3.4.2 patchset so they can continue receiving one-off patches if situations arise. Note: 10.1.3.4.2 is a QA-tested patchset (collection of all bug fixes from 10.1.3.4.1 merged together) and is not an upgrade.

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• Launch Specific OEPE Workspace from the Start Menu

  - by user647124

  I frequently have multiple Eclipse-based projects running simultaneously, sometimes on different versions of Eclipse. I have made a mess of a few workspaces by accidentally opening them in the wrong version of Eclipse. To thwart my own forgetfulness, I went seeking a way to launch directly to a workspace and found it at http://stackoverflow.com/questions/209789/starting-eclipse-w-specific-workspace. Essentially, add the -data switch to your icon's open command, such as: C:\eclipse\eclipse.exe -data E:\MyData\Clients\Confidential\EclipseGCDPGive it a unique name and stick it on your Start Menu (C:\ProgramData\Microsoft\Windows\Start Menu). Makes my life a bit easier and hopefully yours, too.

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• OSB, Service Callouts and OQL - Part 2

  - by Sabha

  This section of the "OSB, Service Callouts and OQL" blog posting will delve into thread dump analysis of OSB server and detecting threading issues relating to Service Callout using ThreadLogic. We would also use Heap Dump and OQL to identify the related Proxies and Business services. The previous section dealt with threading model used by OSB to handle Route and Service Callouts. Please refer to the blog post for more details.

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• Using Queries with Coherence Read-Through Caches

  - by jpurdy

  Applications that rely on partial caches of databases, and use read-through to maintain those caches, have some trade-offs if queries are required. Coherence does not support push-down queries, so queries will apply only to data that currently exists in the cache. This is technically consistent with "read committed" semantics, but the potential absence of data may make the results so unintuitive as to be useless for most use cases (depending on how much of the database is held in cache). Alternatively, the application itself may manually "push down" queries to the database, either retrieving results equivalent to querying the cache directly, or may query the database for a key set and read the values from the cache (relying on read-through to handle any missing values). Obviously, if the result set is too large, reading through the cache may cause significant thrashing. It's also worth pointing out that if the cache is asynchronously synchronized with the database (perhaps via database change listener), that an application may commit a transaction to the database, then generate a key set from the database via a query, then read cache entries through the cache, possibly resulting in a race condition where the application sees older data than it had previously committed. In theory this is not problematic but in practice it is very unintuitive. For this reason it often makes sense to invalidate the cache when updating the database, forcing the next read-through to update the cache.

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• Environment Award for AgroSense Java Farm Management System

  - by Geertjan

  Beating IBM's energy information system and Evoswitch's modular data central hall, Ordina's AgroSense, a farm management system for precision agriculture, received the prestigious IT Environment Award in the Netherlands yesterday. AgroSense is an agricultural services platform created in Java on the NetBeans Platform. It looks like this: Among other things, the team has been investigating whether and how to integrate JavaFX games into the AgroSense platform, as well as other JavaFX-oriented effects. Here's a pic of the red tulip award that the team received yesterday at a black tie award ceremony: The original announcement of the nominations for this competition in English can be read here. On Twitter, you can follow the AgroSense project here: @AgroSense Congratulations, AgroSense team, for this fantastic achievement!

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• Planning for Recovery

  Uncertainty sets the tone of business planning these days and past precedents, 'rules of thumb' and trading history provide little comfort when assessing future prospects. After 18 years of constant growth in GDP, planning is no longer about extrapolating past performance and adjusting for growth. It is now about constantly testing the temperature of the water, formulating scenarios, assessing risk and assigning probabilities. So how does one plan for recovery and improve forecast accuracy in such a volatile environment?

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• Dental adventures ...

  - by nospam(at)example.com (Joerg Moellenkamp)

  Today my dentist pulled all the stops. Really. Just to explain ... half a year ago or so, i got the base part of an dental implant in my jaw. Today i got the teeth ... beside other things. At first i made the acquaintance of a really weird instrument to remove a temporary tooth crown ... it's called "Hirtenstab" in german ... or "crown remover" in english ... i would call it tool of torture. After the fourth time using it, the temporary flew through the room and the final crowns were set on two teeth left and right of the implant. But the strangest instrument i saw was the instrument to fix the abatement (the thing between the crown and the screw thread implanted in the jaw). They really use a torque wrench (albeit a really small one) to screw the abatement into the jaw. Well .. at least i have a zirconium dioxide smile now ...

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• Six Best Practices for Empowering the Customer Experience

  - by Richard Lefebvre

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Companies that fail to offer a great Customer eXperience can face declining customer satisfaction numbers and a poor service experience that can be amplified over #social channels. Here are 6 best practices for empowering the Customer Experience. What are your top tips for a great CX? Read the article here

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• Public JCP EC Meeting on 10 June

  - by Heather VanCura

  The next JCP EC Meeting is open to the public!  We hope you will join us on Tuesday, 10 June at 08:00 AM PDT.  Agenda includes a discussion on the latest JCP.Next news--JSR 364, Broadening JCP Membership. We hope you will join us, but if you cannot attend, the recording and materials will also be public on the JCP.org multimedia page. Meeting details below. ------------------------------------------------------- Topic: Public EC Meeting Date: Tuesday, June 10, 2014 Time: 8:00 am, Pacific Daylight Time (San Francisco, GMT-07:00) Meeting Number: 807 111 580 Meeting Password: 6893 ------------------------------------------------------- To start or join the online meeting ------------------------------------------------------- Go to https://jcp.webex.com/ ------------------------------------------------------- Audio conference information ------------------------------------------------------- +1 (866) 682-4770 (US) Conference code: 5731908 Security code: 6893 Global access numbers

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• New: Online NetBeans 8 Crash Course

  - by Geertjan

  On Twitter today I came across an announcement for a brand new on-line course in NetBeans 8. Since NetBeans 8 has been released during the past few months, the course is really very new. Go here to get there directly: https://www.video2brain.com/de/videotraining/netbeans-ide-8-0-crashkurs Here's the general idea. As you can see, the course is in German. With my basic understanding of German, I've had no problem in following the course. The trainer speaks clearly and slowly and everything is very well structured. The course covers all the basics of NetBeans IDE. From getting set up to using all the key features. The quality of the videos is great and the content is clear and informative. Once you've bought the course, all the lessons are unlocked. As you can see, they're all quite short and there's really a lot of content, didn't all fit into the screenshot: Quite some work must have gone into this. Here's one of the free lessons in the course, to give an idea of what you'll get: https://www.video2brain.com/de/tutorial/texte-internationalisieren This one is also free: https://www.video2brain.com/de/tutorial/eclipse-projekt-importieren I highly recommend this course especially if you're switching, or thinking about switching, from a different IDE and want to get a thorough overview of all the features that NetBeans IDE provides. Everything in the course is done within NetBeans, which means no slides, just code. You get to see the workflow of all the standard tasks and, for these purposes, the course does a really great job.

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• Play Framework Plugin for NetBeans IDE (Part 2)

  - by Geertjan

  After I published part 1 of this series, the first external contribution (i.e., not by me) to the NetBeans plugin for Play Framework 2 was committed today. Yann D'Isanto added support for creating new Play projects: That completely solves a problem I was working on, in a different way altogether. I was working on creating a new wizard that would call "play new" on the command line and pass into the command line the entered name and application type (1 for Java and 2 for Scala). However, Yann's solution is better, at least in the sense in that it works, as opposed to mine which didn't, because of problems I continually had with the command line, since one needs to press Enter multiple times on the Play command line when creating new projects, which I wasn't able to simulate in my new wizard. Yann's approach is simply to follow the approach taken in the Project Type Module Tutorial, which explains how to register a project sample in the IDE. I was inspired by Yann's contribution, especially when he mentioned that one needs to build Play projects on the command line. So, I added a new menu item on the right-click of a project for building Play projects, which simply passes "play compile" to the command line for the current project: Via the IDE's main menu bar, you can also Build and Run the application, though the code for the Clean function needs to be added still, which would be a cool thing for anyone out there to add, by using all the existing code and then passing "play clean compile" to the command line. Something else that Yann added is an Options Window extension, thanks to the Options Window Module Tutorial, for registering the Play installation, which is a step forward from my hard coded solution. I changed things slightly so that, when Build or Run are selected, without a Play installation being defined, the Options window opens, displaying the tab that Yann created, shown below. Notice that there's no Browse button, which would be a simple next step for anyone else to contribute. A small tip is to use the FileChooserBuilder from the NetBeans IDE APIs when working on the Browse button: Looking forward to more contributions to the Play Framework 2 plugin for NetBeans IDE. Just leave a message here with your ideas, with your java.net name, and then I'll add you to the project on java.net, where I very much look forward to your contributions: http://java.net/projects/nbplay/sources/nbplay

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• How to Get Vim to do Filename Completion Even When You are Root

  - by user12608033

  From the Obscure Unix Admin Tip of the Day section... If you occasionally edit files as root (I never do, I always use pfexec, wink wink), then you may have noticed that the vim (Vi Improved) editor that normally does filename completion via the <Tab> key now gives you something like: :e /etc/mo^I when you try to open up /etc/motd with a little less typing So, there are at least three solutions to this: Use <Ctrl>-E instead of <Tab> Use the "-N" flag when you start Vim :set wildchar=<Tab> (Enter those 5 characters, not an actual Tab) The reason for this? It seems that when you are root, Vim sets it's "compatible" flag, which makes it behave more like its ancestor vi. In turn this makes Vim set 'wildchar' to <Ctrl>-E. For more info, read the section you get when you enter :help cmdline-completion

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• Dark NetBeans

  - by Geertjan

  Let's make NetBeans IDE look like this. Not saying it's a nice color or anything, just that it's possible to do so: I changed the coloring in the Java editor by going to Tools | Options, then chose "Fonts & Colors", then selected the "Norway Today" profile and changed the background setting to Dark Gray. Next, I put this themes.xml file into the "config" folder of the NetBeans IDE user directory, which you can identify as such by going to Help | About in the IDE. Go to the exact location defined by "User directory" in Help | About, and then go to the "config" folder within that folder: The "config" folder of the user directory is the readable/writable root of the NetBeans IDE virtual filesystem. If a themes.xml file is found there, it is used, as described here. Then, in netbeans.conf file, which is not in the NetBeans user directory but in the NetBeans installation directory, within its "etc" folder, I added the following to "netbeans_default_options": -J-Dnetbeans.useTheme=true --laf Metal The first of these enables usage of the themes.xml file, i.e., it notifies NetBeans IDE at startup to load the themes.xml file and to apply the content to the relevant UI components, while the second is needed because most/all of the themes only work if you're using the Metal Look and Feel. Note: I must add that in most cases, whatever it is you're trying to achieve via a themes.xml file can probably be achieved in a different, and better, way. The themes.xml mechanism has been there forever, but is not actively supported or tested, though it may work for the specific thing you're trying to do anyway. For example, if you're trying to change the background color of a TopComponent, use the paintComponent method of the TopComponent instead of using a themes.xml file.

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• Reminder: Free, Global, Virtual Developer Day November 5th

  - by jeckels

  Just a quick reminder about the FREE virtual developer day focused on Coherence (and WebLogic) coming on November 5th. This day, with content tailored for developers, will guide you through tooling updates and best practices around creating applications with WebLogic and Coherence as target platforms. We'll also explore advances in how you can manage your build, deploy and ongoing management processes to streamline your application's life cycle. And of course, we'll conclude with some hands-on labs that ensure this isn't all a bunch of made-up stuff - get your hands dirty in the code!November 5, 20139am PT/12pm ETREGISTER NOW We're offering two tracks for your attendance, though of course you're free to attend any session you wish. The first will be for pure developers with sessions around developing for WebLogic with HTML5, processing live events with Coherence, and looking at development tooling. The second is for developers who are involved in the building and management processes as part of the application life cycle. These sessions focus on using Maven for builds, using Chef and Puppet for configuration and more.We look forward to seeing you there - don't forget to invite a friend!

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• ComboBox Data Binding

  - by Geertjan

  Let's create a databound combobox, levering MVC in a desktop application. The result will be a combobox, provided by the NetBeans ChoiceView, that displays data retrieved from a database: What follows is not much different from the NetBeans Platform CRUD Application Tutorial and you're advised to consult that document if anything that follows isn't clear enough. One kind of interesting thing about the instructions that follow is that it shows that you're able to create an application where each element of the MVC architecture can be located within a separate module: Start by creating a new NetBeans Platform application named "MyApplication". Model We're going to start by generating JPA entity classes from a database connection. In the New Project wizard, choose "Java Class Library". Click Next. Name the Java Class Library "MyEntities". Click Finish. Right-click the MyEntities project, choose New, and then select "Entity Classes from Database". Work through the wizard, selecting the tables of interest from your database, and naming the package "entities". Click Finish. Now a JPA entity is created for each of the selected tables. In the Project Properties dialog of the project, choose "Copy Dependent Libraries" in the Packaging panel. Build the project. In your project's "dist" folder (visible in the Files window), you'll now see a JAR, together with a "lib" folder that contains the JARs you'll need. In your NetBeans Platform application, create a module named "MyModel", with code name base "org.my.model". Right-click the project, choose Properties, and in the "Libraries" panel, click Add Dependency button in the Wrapped JARs subtab to add all the JARs from the previous step to the module. Also include "derby-client.jar" or the equivalent driver for your database connection to the module. Controler In your NetBeans Platform application, create a module named "MyControler", with code name base "org.my.controler". Right-click the module's Libraries node, in the Projects window, and add a dependency on "Explorer & Property Sheet API". In the MyControler module, create a class with this content: package org.my.controler; import org.openide.explorer.ExplorerManager; public class MyUtils { static ExplorerManager controler; public static ExplorerManager getControler() { if (controler == null) { controler = new ExplorerManager(); } return controler; } } View In your NetBeans Platform application, create a module named "MyView", with code name base "org.my.view".  Create a new Window Component, in "explorer" view, for example, let it open on startup, with class name prefix "MyView". Add dependencies on the Nodes API and on the Explorer & Property Sheet API. Also add dependencies on the "MyModel" module and the "MyControler" module. Before doing so, in the "MyModel" module, make the "entities" package and the "javax.persistence" packages public (in the Libraries panel of the Project Properties dialog) and make the one package that you have in the "MyControler" package public too. Define the top part of the MyViewTopComponent as follows: public final class MyViewTopComponent extends TopComponent implements ExplorerManager.Provider { ExplorerManager controler = MyUtils.getControler(); public MyViewTopComponent() { initComponents(); setName(Bundle.CTL_MyViewTopComponent()); setToolTipText(Bundle.HINT_MyViewTopComponent()); setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS)); controler.setRootContext(new AbstractNode(Children.create(new ChildFactory<Customer>() { @Override protected boolean createKeys(List list) { EntityManager entityManager = Persistence. createEntityManagerFactory("MyEntitiesPU").createEntityManager(); Query query = entityManager.createNamedQuery("Customer.findAll"); list.addAll(query.getResultList()); return true; } @Override protected Node createNodeForKey(Customer key) { Node customerNode = new AbstractNode(Children.LEAF, Lookups.singleton(key)); customerNode.setDisplayName(key.getName()); return customerNode; } }, true))); controler.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { Customer selectedCustomer = controler.getSelectedNodes()[0].getLookup().lookup(Customer.class); StatusDisplayer.getDefault().setStatusText(selectedCustomer.getName()); } }); JPanel row1 = new JPanel(new FlowLayout(FlowLayout.LEADING)); row1.add(new JLabel("Customers: ")); row1.add(new ChoiceView()); add(row1); } @Override public ExplorerManager getExplorerManager() { return controler; } ... ... ... Now run the application and you'll see the same as the image with which this blog entry started.

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• Quick Fix for GlassFish/MySQL NoPasswordCredential Found

  - by MarkH

  Just the other day, I stood up a GlassFish 3.1.2 server in preparation for a new web app we've developed. Since we're using MySQL as the back-end database, I configured it for MySQL (driver) and created the requisite JDBC resource and supporting connection pool. Pinging the finished pool returned a success, and all was well. Until we fired up the app, that is -- in this case, after a weekend. Funny how things seem to break when you leave them alone for a couple of days. :-) Strangely, the error indicated "No PasswordCredential found". Time to re-check that pool. All the usual properties and values were there (URL, driverClass, serverName, databaseName, portNumber, user, password) and were populated correctly. Yes, the password field, too. And it had pinged successfully. So why the problem? A bit of searching online produced enough relevant material to offer promise. I didn't take notes as I was investigating the cause (note to self), but here were the general steps I took to resolve the issue: First, per some guidance I had found, I tried resetting the password value to nothing (using () for a value). Of course, this didn't fix anything; the database account requires a password. And when I tried to put the value back, GlassFish politely refused. Hmm. I'd seen that some folks created a new pool to replace the "broken" one, and while that did work for them, it seemed to simply side-step the issue. So I deleted the password property - which GlassFish allowed me to do - and restarted the domain. Once I was back in, I re-added the password property and its value, saved it, and pinged...success! But now to the app for the litmus test. The web app worked, and everything and everyone was now happy. Not bad for a Monday.  :-D Hope this helps, Mark

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