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  • Custom Glassfish Security Realm does not work (unable to find LoginModule)

    - by ifischer
    I'm trying to get a Custom Security Realm in Glassfish working (i tried 3.0.1 final and 3.1 B33). I read nearly all tutorials about this, but it doesn not work on my System. I'm getting the error Login failed: javax.security.auth.login.LoginException: unable to find LoginModule class: de.company.security.utility.CustomLoginModule when trying to login. Here is what i did: I created a little Maven project, which contains the needed Realm class, CustomRealm, and the corresponding LoginModule, CustomLoginModule. My pom.xml: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mycompany</groupId> <artifactId>CustomJDBCRealm</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <name>Custom JDBCRealm</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>org.glassfish.security</groupId> <artifactId>security</artifactId> <version>3.1-b33</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> <optimise>true</optimise> <debug>true</debug> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project> My Custom Realm class: package de.company.security.utility; import com.sun.appserv.security.AppservRealm; import com.sun.enterprise.security.auth.realm.BadRealmException; import com.sun.enterprise.security.auth.realm.InvalidOperationException; import com.sun.enterprise.security.auth.realm.NoSuchRealmException; import com.sun.enterprise.security.auth.realm.NoSuchUserException; import java.util.Enumeration; import java.util.Properties; import java.util.Vector; /** * * @author ifischer */ public class CustomRealm extends AppservRealm { Vector<String> groups = new Vector<String>(); private String jaasCtxName; private String startWith; @Override public void init(Properties properties) throws BadRealmException, NoSuchRealmException { jaasCtxName = properties.getProperty("jaas-context", "customRealm"); startWith = properties.getProperty("startWith", "z"); groups.add("dummy"); } @Override public String getAuthType() { return "Custom Realm"; } public String[] authenticate(String username, char[] password) { // if (isValidLogin(username, password)) return (String[]) groups.toArray(); } @Override public Enumeration getGroupNames(String username) throws InvalidOperationException, NoSuchUserException { return groups.elements(); } @Override public String getJAASContext() { return jaasCtxName; } public String getStartWith() { return startWith; } } My LoginModule class: /* * Copyright (c) 2010 ProfitBricks GmbH. All Rights Reserved. */ package de.company.security.utility; import com.sun.appserv.security.AppservPasswordLoginModule; import com.sun.enterprise.security.auth.login.common.LoginException; import java.util.Set; import org.glassfish.security.common.PrincipalImpl; /** * * @author ifischer */ public class CustomLoginModule extends AppservPasswordLoginModule { @Override protected void authenticateUser() throws LoginException { _logger.info("CustomRealm : authenticateUser for " + _username); final CustomRealm realm = (CustomRealm)_currentRealm; if ( (_username == null) || (_username.length() == 0) || !_username.startsWith(realm.getStartWith())) throw new LoginException("Invalid credentials"); String[] grpList = realm.authenticate(_username, getPasswordChar()); if (grpList == null) { throw new LoginException("User not in groups"); } _logger.info("CustomRealm : authenticateUser for " + _username); Set principals = _subject.getPrincipals(); principals.add(new PrincipalImpl(_username)); this.commitUserAuthentication(grpList); } } I compiled this Maven project and copyied the resulting JAR-file to the Glassfish/lib directory. Then i added the Security Realm "customRealm" to my Glassfish with asadmin: asadmin create-auth-realm --classname de.company.security.utility.CustomRealm --property jaas-context=customRealm:startWith=a customRealm I even referenced the LoginModule class for the JAAS context of my Custom Realm, therefore i inserted this into the login.conf of my domain: customRealm { de.company.security.utility.CustomLoginModule required; }; Although this LoginModule SHOULD BE on the Glassfish classpath, as it's classfiled is packaged in the JAR that i put into the Glassfish/lib-dir, it cannot be found when i try to login. For login, i build a really simple JSF-project, which calls the HttpServletRequest-login-method of Servlet 3.0. When trying to login i'm getting the following Exception: 2010-12-24T14:41:31.613+0100|WARNING|glassfish3.0.1| javax.enterprise.system.container.web.com.sun.web.security|_ThreadID=25; _ThreadName=Thread-1;|Web login failed: Login failed: javax.security.auth.login.LoginException: unable to find LoginModule class: de.company.security.utility.CustomLoginModule Anybody got an idea what i can do that Glassfish loads the LoginModule-class?

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  • Linq Distinct on list

    - by BahaiResearch.com
    I have a list like this: List people age name 1 bob 1 sam 7 fred 7 tom 8 sally I need to do a linq query on people and get an int of the number distinct ages (3) int distinctAges = people.SomeLinq(); how? how?

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  • How do I implement a remove by index method for a singly linked list in Java?

    - by Lars Flyger
    Hi, I'm a student in a programming class, and I need some help with this code I've written. So far I've written an entire linked list class (seen below), yet for some reason the "removeByIndex" method won't work. I can't seem to figure out why, the logic seems sound to me. Is there some problem I don't know about? public class List<T> { //private sub-class Link private class Link { private T value; private Link next; //constructors of Link: public Link (T val) { this.value = val; this.next = null; } public Link (T val, Link next) { this.value = val; this.next = next; } @SuppressWarnings("unused") public T getValue() { return value; } } private static final Exception NoSuchElementException = null; private static final Exception IndexOutOfBoundsException = null; private Link chain = null; //constructors of List: public List() { this.chain = null; } //methods of List: /** * Preconditions: none * Postconditions: returns true if list is empty */ public boolean isEmpty() { return this.chain == null; } /** * Preconditions: none * Postconditions: A new Link is added via add-aux * @param element */ public void add(T element) { this.add_aux(element, this.chain); } /** * Preconditions: none * Postconditions: A new Link is added to the current chain * @param element * @param chain */ private void add_aux(T element, Link chain) { if (chain == null) { //if chain is null set chain to a new Link with a value of //element this.chain = new Link(element); } else if (chain.next != null) { //if chain.next is not null, go to next item in chain and //try //to add element add_aux(element, chain.next); } else { //if chain.next is null, set chain.next equal to a new Link //with value of element. chain.next = new Link(element); } } /** * Preconditions: none * Postconditions: returns the link at the defined index via nthlink_aux * @param index * @return */ private Link nthLink (int index) { return nthLink_aux(index, this.chain); } /** * Preconditions: none * Postconditions: returns the link at the defined index in the specified *chain * @param i * @param c * @return */ private Link nthLink_aux (int i, Link c) { if (i == 0) { return c; } else return nthLink_aux(i-1, c.next); } /** * Preconditions: the specified element is present in the list * Postconditions: the specified element is removed from the list * @param element * @throws Exception */ public void removeElement(T element) throws Exception { if (chain == null) { throw NoSuchElementException; } //while chain's next is not null and the value of chain.next is not //equal to element, //set chain equal to chain.next //use this iteration to go through the linked list. else while ((chain.next != null) && !(chain.next.value.equals(element))){ Link testlink = chain.next; if (testlink.next.value.equals(element)) { //if chain.next is equal to element, bypass the //element. chain.next.next = chain.next.next.next; } else if (testlink.next == null) { throw NoSuchElementException; } } } /** * Preconditions: none * Postsconditions: the Link at the specified index is removed * @param index * @throws Exception */ public void removeByIndex(int index) throws Exception { if (index == 0) { //if index is 0, set chain equal to chain.next chain = chain.next; } else if (index > 0) { Link target = nthLink(index); while (target != null) { if (target.next != null) { target = target.next; } //if target.next is null, set target to null else { target = null; } } return; } else throw IndexOutOfBoundsException; } /** * Preconditions: none * Postconditions: the specified link's value is printed * @param link */ public void printLink (Link link) { if(link != null) { System.out.println(link.value.toString()); } } /** * Preconditions: none * Postconditions: all of the links' values in the list are printed. */ public void print() { //copy chain to a new variable Link head = this.chain; //while head is not null while (!(head == null)) { //print the current link this.printLink(head); //set head equal to the next link head = head.next; } } /** * Preconditions: none * Postconditions: The chain is set to null */ public void clear() { this.chain = null; } /** * Preconditions: none * Postconditions: Places the defined link at the defined index of the list * @param index * @param val */ public void splice(int index, T val) { //create a new link with value equal to val Link spliced = new Link(val); if (index <= 0) { //copy chain Link copy = chain; //set chain equal to spliced chain = spliced; //set chain.next equal to copy chain.next = copy; } else if (index > 0) { //create a target link equal to the link before the index Link target = nthLink(index - 1); //set the target's next equal to a new link with a next //equal to the target's old next target.next = new Link(val, target.next); } } /** * Preconditions: none * Postconditions: Check to see if element is in the list, returns true * if it is and false if it isn't * @param element * @return */ public boolean Search(T element) { if (chain == null) { //return false if chain is null return false; } //while chain's next is not null and the value of chain.next is not //equal to element, //set chain equal to chain.next //use this iteration to go through the linked list. else while ((chain.next != null) && !(chain.next.value.equals(element))) { Link testlink = chain.next; if (testlink.next.value.equals(element)) { //if chain.next is equal to element, return true return true; } else if (testlink.next == null) { return false; } } return false; } /** * Preconditions: none * Postconditions: order of the links in the list is reversed. */ public void reverse() { //copy chain Link current = chain; //set chain equal to null chain = null; while (current != null) { Link save = current; current = current.next; save.next = chain; chain = save; } } }'

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  • New to Linux Kernel/Driver development...

    - by CVS-2600Hertz-wordpress-com
    Recently, i began developing a driver of an embedded device running linux. Until now i have only read about linux internals. Having no prior experience in driver devlopment, i am finding it a tad difficult to land my first step. I have downloaded the kernel source-code (v2.6.32). I have read (skimped) Linux Device Drivers (3e) I read a few related posts here on StackOverflow. I understand that linux has a "monolithic" approach. I have built kernel (included existing driver in menuconfig etc.) I know the basics of kconfig and makefile files so that should not be a problem. Can someone describe the structure (i.e. the inter-links) of the various folders in the kernel-source code. In other words given a source-code file, which other files would it refer to for related code (The "#include"-s provide a partial idea) Could someone please help me in getting a better idea? Any help will be greatly appreciated Thank You.

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  • Timing the Linux Kernel boot-time optimisation

    - by CVS-2600Hertz-wordpress-com
    I am trying to optimise the boot-up time of linux on an embedded device (not PC) Currently to profile the boot-up sequence, I have enabled the timing info on printk logs. Is this the most optimum way? If not, how do i profile the boot-up sequence (with timing) with minimum overhead? PS: I have a terminal (of the device) over a serial-connection & I use TeraTerm over windows-XP to access it.

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  • C# .Net file in use issue

    - by Dan
    I'm having an issue opening files that have recently been closed by the .Net framework. Basically, what happens is the following: -Read in an XML file using DataSet.ReadXml() -Make some changes to the data -Write out the XML file using DataSet.WriteXml() -Copy the XML file to a new location using File.Copy -FTP the file using a custom control This sequence can intermittently fail either after the WriteXML or the File.Copy with a file in use exception. I'm guessing it could be the Windows write cache not flushing right away. Can anyone confirm that this could be causing my issue? Any solutions to suggest? Thanks, Dan

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  • Authenticating a single request with httpclient 4.x

    - by scompt.com
    I have an HttpClient instance that's shared by a number of threads. I would like to use it to make a single authenticated request. Because only the single request should be authenticated, I don't want to modify the HttpClient instance as described in the documentation. Here's what I've worked out instead, which isn't working. From what I can tell, it doesn't look like the CredentialsProvider is being used at all. Any tips? HttpContext context = null; if(feedSpec.isAuthenticated()) { context = new BasicHttpContext(); CredentialsProvider credsProvider = new BasicCredentialsProvider(); credsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(feedSpec.getHttpUsername(), feedSpec.getHttpPassword())); context.setAttribute(ClientContext.CREDS_PROVIDER, credsProvider); context.setAttribute(ClientPNames.HANDLE_AUTHENTICATION, true); } HttpGet httpGet = new HttpGet(feedSpec.getUri()); HttpResponse httpResponse = httpClient.execute(httpGet, context);

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  • Unable to find static resource in runtime even while designer can see it

    - by xumix
    So i have this markup: <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:Werp.MigrationHelper"> <Style TargetType="{x:Type UserControl}" x:Key="WizardPageControl" x:Name="WizardPageControl"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type UserControl}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="10" /> <ColumnDefinition Width="475" /> <ColumnDefinition Width="10" /> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="10" /> <RowDefinition Height="410"/> <RowDefinition Height="50" /> <RowDefinition Height="10" /> </Grid.RowDefinitions> <StackPanel Orientation="Vertical" Name="MainContent" Grid.Row="1" Grid.Column="1"> <ContentPresenter Content="{TemplateBinding Content}"/> </StackPanel> <StackPanel Grid.Column="1" Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,0,0,10" Height="30"> <Button Name="BackButton" Width="50" xml:space="preserve">&lt; _Back</Button> <Button Name="NextButton" Width="50" Margin="10,0,0,0" xml:space="preserve" IsDefault="True">_Next &gt;</Button> <Button Name="CancelButton" Width="50" Margin="10,0,0,0" IsCancel="True">_Cancel</Button> <Button Name="FinishButton" IsEnabled="True" Width="50" Margin="10,0,0,0">_Finish</Button> </StackPanel> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </ResourceDictionary> <Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="Resources\WizardPageControl.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> </Application> <UserControl x:Class="Werp.MigrationHelper.WizardPageControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:Werp.MigrationHelper" mc:Ignorable="d"> </UserControl> Then I try to use it: <PageFunction xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:Werp.MigrationHelper" x:Class="Werp.MigrationHelper.WizardPage1" x:TypeArguments="local:WizardResult" KeepAlive="True" WindowTitle="Wizard Page 1" > <local:WizardPageControl Style="{StaticResource ResourceKey=WizardPageControl}"> <local:WizardPageControl.Content> qweqweqweqweq </local:WizardPageControl.Content> </local:WizardPageControl> </PageFunction> The VS designer show everything Ok, but in runtime i get System.Windows.Markup.XamlParseException occurred Message='Provide value on 'System.Windows.StaticResourceExtension' threw an exception.' Line number '4' and line position '5'. Source=PresentationFramework LineNumber=4 LinePosition=5 StackTrace: at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri) at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri) at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream) at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) at Werp.MigrationHelper.WizardPage1.InitializeComponent() in d:\Home\Docs\Visual Studio 2008\Projects\csharp\wizardpage1.xaml:line 1 at Werp.MigrationHelper.WizardPage1..ctor(WizardData wizardData) in D:\home\Docs\Visual Studio 2008\Projects\csharp\WizardPage1.xaml.cs:line 12 InnerException: Message=Cannot find resource named 'WizardPageControl'. Resource names are case sensitive. Source=PresentationFramework StackTrace: at System.Windows.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider) InnerException: Whats the prolem??

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  • How to create SSIS package to update from one database to another database within same server

    - by Pavan Kumar
    My query is related to the answers i got for questions i had posted earlier in the same forum. I have a copy of a client database which is attached to SQL Server where the Central Database exists. The copy already contains the updated data. I just want to update from that copy to Central Database both holding same schema and are present in the same server using C# .NET. One of the solution i got was to create SSIS package and run it from the UI. I want to know as how i can create SSIS Package to achieve this. I am new to SSIS. I am using SQL Server 2005 Standard Edition and Visual Studio 2008 SP1 installed. I learnt that BIDS 2005 is used to create packages which comes by default with SQL Server 2005. Can someone please give me a example as i am new to this.

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  • Android app in eclipse

    - by Colin
    Hello everybody, i've searched for days but cant find an answer, perhaps you guys can help. I'm creating an android app in eclipse, it all works just one thing is bugging me. this is my main.java: package com.test; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Toast; public class Main extends Activity implements OnClickListener { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Add Click listeners for all buttons View firstButton = findViewById(R.id.btn_rassen); firstButton.setOnClickListener(this); View secondButton = findViewById(R.id.button2); secondButton.setOnClickListener(this); } // Process the button click events @Override public void onClick(View v) { switch(v.getId()){ case R.id.btn_rassen: Intent j = new Intent(this, Webscreen.class); j.putExtra(com.test.Webscreen.URL, "http://www.google.com/"); startActivity(j); break; case R.id.button2: Intent k = new Intent(this, Webscreen.class); k.putExtra(com.test.Webscreen.URL, "http://notworkingurltotest.com"); startActivity(k); break; } } } now when it calls the webview.java the page called shows up but not the buttons i created in the layout xml page. does anybody have any idea why this is? your help is much appreciated! ohw this is my webscreen.java package com.test; import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.Window; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.Toast; public class Webscreen extends Activity { public static final String URL = ""; private static final String TAG = "WebscreenClass"; private WebView webview; private ProgressDialog progressDialog; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.webscreen); this.getIntent().getExtras(); this.webview = (WebView) findViewById(R.string.webview); String turl = getIntent().getStringExtra(URL); Log.i(TAG, " URL = "+turl); WebView webview = new WebView(this); setContentView(webview); final Activity activity = this; webview.setWebViewClient(new WebViewClient() { public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } public void onLoadResource (WebView view, String url) { if (progressDialog == null) { progressDialog = new ProgressDialog(activity); progressDialog.setMessage("Bezig met laden..."); progressDialog.show(); } } public void onPageFinished(WebView view, String url) { if (progressDialog.isShowing()) { progressDialog.dismiss(); progressDialog = null; } } public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Intent myIntent = new Intent(); myIntent.setClassName("com.test", "com.test.Main"); startActivity(myIntent); Toast.makeText(activity, "Laden van onderdeel mislukt, probeer het later nog eens! ", Toast.LENGTH_LONG).show(); progressDialog.show(); } }); webview.loadUrl(turl); } } webscreen.xml layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <!-- <1> --> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content"> <EditText android:id="@+id/url" android:layout_height="wrap_content" android:layout_width="wrap_content" android:lines="1" android:layout_weight="1.0" android:hint="http://" android:visibility="visible" /> <Button android:id="@+id/go_button" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="go_button" /> </LinearLayout> <!-- <2> --> <WebView android:id="@string/webview" android:layout_width="fill_parent" android:layout_height="0dip" /> </LinearLayout>

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  • Best Java 'framework' for LOW-END 3D Graphics?

    - by CodeJustin.com
    I've made my share of 2D games on various platforms but I have never developed a 3D game. I want to make a small "mmorpg". I already made my server in python and it works just fine with my flash 2D game but I decided I want to step it up and try out 3D. I want to make a 3D game for the web browser and I think Java might be a good choice for this. So basically I'm just looking for a straight forward and well documents 'framework' to make LOW-END 3D games. Keep in mind that I will be targeting peoples with very low-end PC's (plus my 3d modeling skills aren't great so I wouldn't mind hiding it somewhat, haha)

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  • Android JARSIGNER GUI tool?

    - by BahaiResearch.com
    Newbie question. After I have written the Android App (easy part) I need to sign it and upload it (seems the hard part) Is there an Open Source app or tool that I can use to do this so that I don't have to write command shell scripts. JARSIGNER looks overly complex. I'm looking for a dead simple Sign-And-Package up tool. I am using Eclipse with the Android plug in.

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  • Any good tutorials or resources for learning how to design a scalable and "component" based game 'fr

    - by CodeJustin.com
    In short I'm creating a 2D mmorpg and unlike my last "mmo" I started developing I want to make sure that this one will scale well and work well when I want to add new in-game features or modify existing ones. With my last attempt with an avatar chat within the first few thousand lines of code and just getting basic features added into the game I seen my code quality lowering and my ability to add new features or modify old ones was getting lower too as I added more features in. It turned into one big mess that some how ran, lol. This time I really need to buckle down and find a design that will allow me to create a game framework that will be easy to add and remove features (aka things like playing mini-games within my world or a mail system or buddy list or a new public area with interactive items). I'm thinking that maybe a component based approach MIGHT be what I'm looking for but I'm really not sure. I have read documents on mmorpg design and 2d game engine architecture but nothing really explained a way of designing a game framework that will basically let me "plug-in" new features into the main game and use the resources of the main game without changing much within my 'main game code'. Hope someone understands what I mean, any help will is appreciated.

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  • Communicating between PHP and Java using ActiveMQ/Stomp

    - by scompt.com
    Background I have two services that need to communicate with each other over a message queue. One is a legacy service written in PHP and the other is in Java. Sooner than later, the PHP service will be rewritten in Java. The current way they communicate with each other is to write to a shared database, which the other service polls. This is what I'm trying to get away from and replace with a message queue. Problem The communication I'm working on right now is from the PHP service to the Java service. It needs to send a relatively complex object (strings and and integers and lists and maps of strings and integers). Ideally, the solution would be workable in PHP and ideal in Java, as that's going to be the legacy of this project. Possible Solutions 1.

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  • How CPU finds ISR and distinguishes between devices

    - by ripunjay-tripathi-gmail-com
    I should first share all what I know - and that is complete chaos. There are several different questions on the topic, so please don't get irritated :). 1) To find an ISR, CPU is provided with a interrupt number. In x86 machines (286/386 and above) there is a IVT with ISRs in it; each entry of 4 bytes in size. So we need to multiply interrupt number by 4 to find the ISR. So first bunch of questions is - I am completely confused in mechanism of CPU receiving the interrupt. To raise an interrupt, firstly device shall probe for IRQ - then what ? The interrupt number travels "on IRQ" towards CPU? I also read something like device putting ISR address on data bus ; whats that then ? What is the concept of devices overriding the ISR. Can somebody tell me few example devices where CPU polls for interrupts? And where does it finds ISR for them ? 2) If two devices share an IRQ (which is very much possible), how does CPU differs amongst them ? What if both devices raise an interrupt of same priority simultaneously. I got to know there will be masking of same type and low priority interrupts - but how this communication happens between CPU and device controller? I studied the role of PIC and APIC for this problem, but could not understand. Thanks for reading. Thank you very much for answering.

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  • Triggering PHP from ActiveMQ

    - by scompt.com
    Background: Our current system involves two services (one written in Java, the other in PHP) that communicate with each other using HTTP callbacks. We would like to migrate from HTTP callbacks to a message-based architecture using ActiveMQ (or another, if necessary). We'll probably use STOMP to communicate between them. Eventually, the PHP service will be rewritten in Java, but that's not part of this project. Question: How can the ActiveMQ system notify PHP that a new message has been posted to the queue that the PHP system is subscribed to? In the current system, the callback inherently calls into the PHP and triggers it. This goes away with a message-based architecture. Possible solutions: Cron regularly calls a PHP script that checks for new messages. yuck. A long-running PHP process that loops and sleeps and checks for new messages. less yuck? ActiveMQ calls a PHP script when a new message is posted. good, how? ??

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  • Is it possible to scan Entities in jar files using JPA and hibernate

    - by user1260109
    I have the following situation : Project A - Contains a few entities and is independent Project B - Contains a few entities and is independent Project C - Contains few entities and is dependent on Project A & Project B. I am using Maven to manage dependencies and builds. When I try to test Project A and project B it goes through fine. Each of them has a persistence.xml and a separate persistent context. When I run Project C , It does map any of the entities. I have tried to use the auto-detect, specified the jar file attribute ... but nothing seems to work. It gives me a Mapping Exception saying unknown entity and wont persist or read the Entities from Projects A or B. I have posted the 3 persistence.xml files here. Also, I tried using the class attribute and using the same persistent context but it just wont find the files. Any help is really appreciated. Thanks in advance ! <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="A" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle9Dialect"/> <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.connection.username" value="username"/> <property name="hibernate.connection.password" value="password"/> <property name="hibernate.connection.url" value="jdbc:oracle:thin:@webdev.epi.web:1521/webdev.world"/> <property name="hibernate.max_fetch_depth" value="3"/> <property name="hibernate.archive.autodetection" value="class"/> </properties> </persistence-unit> </persistence> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="B" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle9Dialect"/> <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.connection.username" value="username"/> <property name="hibernate.connection.password" value="password"/> <property name="hibernate.connection.url" value="jdbc:oracle:thin:@webdev.epi.web:1521/webdev.world"/> <property name="hibernate.max_fetch_depth" value="3"/> <property name="hibernate.archive.autodetection" value="class"/> </properties> </persistence-unit> </persistence> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="C" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jar-file>A-0.0.1-SNAPSHOT.jar</jar-file> <jar-file>B-0.0.1-SNAPSHOT.jar</jar-file> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle9Dialect"/> <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.connection.username" value="username"/> <property name="hibernate.connection.password" value="password"/> <property name="hibernate.connection.url" value="jdbc:oracle:thin:@webdev.epi.web:1521/webdev.world"/> <property name="hibernate.max_fetch_depth" value="3"/> <property name="hibernate.archive.autodetection" value="class"/> </properties> </persistence-unit> </persistence>

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  • Setting log level of message at runtime in slf4j

    - by scompt.com
    When using log4j, the Logger.log(Priority p, Object message) method is available and can be used to log a message at a log level determined at runtime. We're using this fact and this tip to redirect stderr to a logger at a specific log level. slf4j doesn't have a generic log() method that I can find. Does that mean there's no way to implement the above?

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