blob: b31529fdc81deeb3530dab3413884dd61c49f15e [file] [log] [blame]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Dependency Manager - Resource Dependency :: Apache Felix</title>
<link rel="canonical" href="https://felix.apache.org/documentation/subprojects/apache-felix-dependency-manager/reference/dependency-resource.html">
<meta name="generator" content="Antora 2.3.4">
<link rel="stylesheet" href="../../../../_/css/site.css">
<link rel="icon" href="../../../../_/img/favicon.png" type="image/x-icon">
</head>
<body class="article">
<header class="header">
<nav class="navbar">
<div class="navbar-brand">
<a class="navbar-item" href="https://felix.apache.org/index.html">
<span>
<img src="../../../../_/img/logo.png">
</span>
</a>
<button class="navbar-burger" data-target="topbar-nav">
<span></span>
<span></span>
<span></span>
</button>
</div>
<div id="topbar-nav" class="navbar-menu">
<div class="navbar-end">
<a class="navbar-item" href="https://felix.apache.org/index.html">Home</a>
<div class="navbar-item has-dropdown is-hoverable">
<a class="navbar-link" href="#">Subprojects</a>
<div class="navbar-dropdown">
<a class="navbar-item" href="../../apache-felix-dependency-manager.html">Dependency Manager</a>
<a class="navbar-item" href="../../apache-felix-event-admin.html">Event Admin</a>
<a class="navbar-item" href="../../apache-felix-file-install.html">File Install</a>
<a class="navbar-item" href="../../apache-felix-framework.html">Framework</a>
<a class="navbar-item" href="../../apache-felix-gogo.html">Gogo Shell</a>
<a class="navbar-item" href="../../apache-felix-healthchecks.html">Health Checks</a>
<a class="navbar-item" href="../../apache-felix-inventory.html">Inventory</a>
<a class="navbar-item" href="../../apache-felix-log.html">Log</a>
<a class="navbar-item" href="../../apache-felix-logback.html">Logback</a>
<a class="navbar-item" href="../../apache-felix-maven-bundle-plugin.html">Maven bundle plugin</a>
<a class="navbar-item" href="../../apache-felix-maven-scr-plugin.html">Maven SCR plugin</a>
<a class="navbar-item" href="../../apache-felix-metatype-service.html">Metatype Service</a>
<a class="navbar-item" href="../../apache-felix-preferences-service.html">Preferences Service</a>
<a class="navbar-item" href="../../apache-felix-remote-shell.html">Remote Shell</a>
<a class="navbar-item" href="../../apache-felix-script-console-plugin.html">Script console plugin</a>
<a class="navbar-item" href="../../apache-felix-shell.html">Lightweight shell</a>
<a class="navbar-item" href="../../apache-felix-shell-tui.html">Shell TUI</a>
<a class="navbar-item" href="../../apache-felix-web-console.html">Web Console</a>
</div>
</div>
<div class="navbar-item">
<span class="control">
<a class="button is-primary" href="../../../downloads.html">Downloads</a>
</span>
</div>
</div>
</div>
</nav>
</header>
<div class="body">
<div class="nav-container" data-component="documentation" data-version="master">
<aside class="nav">
<div class="panels">
<div class="nav-panel-menu is-active" data-panel="menu">
<nav class="nav-menu">
<h3 class="title"><a href="../../../index.html">Documentation</a></h3>
<ul class="nav-list">
<li class="nav-item" data-depth="0">
<ul class="nav-list">
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../documentation.html">Documentation</a>
</li>
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../downloads.html">Downloads</a>
</li>
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../getting-started.html">Getting Started</a>
</li>
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../news.html">News</a>
</li>
<li class="nav-item" data-depth="1">
<button class="nav-item-toggle"></button>
<span class="nav-text">Community</span>
<ul class="nav-list">
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../community/project-info.html">Apache Felix Project Info</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../community/contributing.html">Contributing</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../community/projects-using-felix.html">Projects Using Felix</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="1">
<button class="nav-item-toggle"></button>
<span class="nav-text">Development</span>
<ul class="nav-list">
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/coding-standards.html">Coding Standards</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/dependencies-file-template.html">DEPENDENCIES file template</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/provisional-osgi-api-policy.html">Provisional OSGi API Policy</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/release-management-nexus.html">Release Management</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/site-how-to.html">Site How To</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../development/using-the-osgi-compliance-tests.html">Using the OSGi Compliance Tests</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="1">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../../faqs.html">FAQS</a>
<ul class="nav-list">
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../faqs/apache-felix-bundle-plugin-faq.html">Apache Felix Bundle Plugin Frequently Asked Questions</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../faqs/apache-felix-scr-plugin-faq.html">Apache Felix SCR Plugin Frequently Asked Questions</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="1">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../../subprojects.html">Subprojects</a>
<ul class="nav-list">
<li class="nav-item" data-depth="2">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../apache-felix-dependency-manager.html">Apache Felix Dependency Manager</a>
<ul class="nav-list">
<li class="nav-item" data-depth="3">
<button class="nav-item-toggle"></button>
<span class="nav-text">Guides</span>
<ul class="nav-list">
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/migrating-from-earlier-versions.html">Apache Felix Dependency Manager - Migrating from earlier versions</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/annotations.html">Dependency Manager - Annotations</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/background.html">Dependency Manager - Background</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/bundles-and-dependencies.html">Dependency Manager - Bundles and Dependencies</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/design-patterns.html">Dependency Manager - Design Patterns</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/development.html">Dependency Manager - Development</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/history.html">Dependency Manager - History</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/javadocs.html">Dependency Manager - JavaDocs</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/migrating-from-other-solutions.html">Dependency Manager - Migrating from other solutions.</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/performance-tuning.html">Dependency Manager - Performance Tuning</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/resources.html">Dependency Manager - Resource adapters</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/whatsnew.html">Dependency Manager - What&#8217;s new in version 4?</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/dm-lambda.html">Dependency Manager Lambda</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../guides/whatsnew-r15.html">What&#8217;s New in R15</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="3">
<button class="nav-item-toggle"></button>
<span class="nav-text">Reference</span>
<ul class="nav-list">
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-adapter.html">Dependency Manager - Adapter</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-aspect.html">Dependency Manager - Aspect</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-bundle-adapter.html">Dependency Manager - Bundle Adapter</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="dependency-bundle.html">Dependency Manager - Bundle Dependency</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="components.html">Dependency Manager - Components</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="dependency-configuration.html">Dependency Manager - Configuration Dependency</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="dependencies.html">Dependency Manager - Dependencies</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="external-links.html">Dependency Manager - External Links</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-factory-configuration-adapter.html">Dependency Manager - Factory Configuration Adapter Service</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-resource-adapter.html">Dependency Manager - Resource Adapter</a>
</li>
<li class="nav-item is-current-page" data-depth="4">
<a class="nav-link" href="dependency-resource.html">Dependency Manager - Resource Dependency</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="dependency-service.html">Dependency Manager - Service Dependency</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="service-scopes.html">Dependency Manager - Service Scopes</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="component-singleton.html">Dependency Manager - Singleton Component</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="thread-model.html">Dependency Manager - Thread Model</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="dm-annotations.html">Dependency Manager Annotations</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="3">
<button class="nav-item-toggle"></button>
<span class="nav-text">Tutorials</span>
<ul class="nav-list">
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../tutorials/working-with-annotations.html">Dependency Manager - Annotations</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../tutorials/getting-started.html">Dependency Manager - Getting Started</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../tutorials/leveraging-the-shell.html">Dependency Manager - Leveraging the shell</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../tutorials/sample-code.html">Dependency Manager sample projects</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-event-admin.html">Apache Felix Event Admin</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-file-install.html">Apache Felix File Install</a>
</li>
<li class="nav-item" data-depth="2">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../apache-felix-framework.html">Apache Felix Framework</a>
<ul class="nav-list">
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-framework/apache-felix-framework-bundle-cache.html">Apache Felix Framework Bundle Cache</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-framework/apache-felix-framework-configuration-properties.html">Apache Felix Framework Configuration Properties</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-framework/apache-felix-framework-faq.html">Apache Felix Framework Frequently Asked Questions</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-framework/apache-felix-framework-launching-and-embedding.html">Apache Felix Framework Launching and Embedding</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-framework/apache-felix-framework-usage-documentation.html">Apache Felix Framework Usage Documentation</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-framework-security.html">Apache Felix Framework Security</a>
</li>
<li class="nav-item" data-depth="2">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../apache-felix-gogo.html">Apache Felix Gogo</a>
<ul class="nav-list">
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-gogo/rfc-147-overview.html">RFC 147 Overview</a>
</li>
</ul>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-healthchecks.html">Apache Felix Health Checks</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-inventory.html">Apache Felix Inventory Printer</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-log.html">Apache Felix Log</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-logback.html">Apache Felix Logback</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-maven-bundle-plugin-bnd.html">Apache Felix Maven Bundle Plugin (BND)</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-metatype-service.html">Apache Felix Metatype Service</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-osgi-bundle-repository.html">Apache Felix OSGi Bundle Repository (OBR)</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-preferences-service.html">Apache Felix Preferences Service</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-remote-shell.html">Apache Felix Remote Shell</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-shell.html">Apache Felix Shell</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../apache-felix-shell-tui.html">Apache Felix Shell TUI</a>
</li>
<li class="nav-item" data-depth="2">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../apache-felix-web-console.html">Apache Felix Web Console</a>
<ul class="nav-list">
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console.html">Extending the Apache Felix Web Console</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-web-console/web-console-restful-api.html">Web Console RESTful API</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../apache-felix-web-console/web-console-security-provider.html">Web Console Security Provider</a>
</li>
<li class="nav-item" data-depth="3">
<button class="nav-item-toggle"></button>
<span class="nav-text">Extensions</span>
<ul class="nav-list">
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console/branding-the-web-console.html">Branding the Web Console</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console/providing-resources.html">Providing Resources</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console/providing-web-console-plugins.html">Providing Web Console Plugins</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console/web-console-logging.html">Web Console Logging</a>
</li>
<li class="nav-item" data-depth="4">
<a class="nav-link" href="../../apache-felix-web-console/extending-the-apache-felix-web-console/web-console-output-templating.html">Web Console Output Templating</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="nav-item" data-depth="1">
<button class="nav-item-toggle"></button>
<a class="nav-link" href="../../../tutorials-examples-and-presentations.html">Tutorials</a>
<ul class="nav-list">
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-application-demonstration.html">Apache Felix Application Demonstration</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial.html">Apache Felix OSGi Tutorial</a>
</li>
<li class="nav-item" data-depth="2">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-faq.html">OSGi Frequently Asked Questions</a>
</li>
<li class="nav-item" data-depth="2">
<button class="nav-item-toggle"></button>
<span class="nav-text">OSGI Tutorial</span>
<ul class="nav-list">
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-1.html">Apache Felix Tutorial Example 1 - Service Event Listener Bundle</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-2.html">Apache Felix Tutorial Example 2</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-2b.html">Apache Felix Tutorial Example 2b</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-3.html">Apache Felix Tutorial Example 3</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-4.html">Apache Felix Tutorial Example 4</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-5.html">Apache Felix Tutorial Example 5</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-6.html">Example 6 - Spell Checker Service Bundle</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-7.html">Example 7 - Spell Checker Client Bundle</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-8.html">Example 8 - Spell Checker Service using Service Binder</a>
</li>
<li class="nav-item" data-depth="3">
<a class="nav-link" href="../../../tutorials-examples-and-presentations/apache-felix-osgi-tutorial/apache-felix-tutorial-example-9.html">Example 9 - Spell Checker Service using Declarative Services</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../license.html">Apache License 2.0</a>
</li>
<li class="nav-item" data-depth="1">
<a class="nav-link" href="../../../site-map.html">Site map</a>
</li>
</ul>
</li>
</ul>
</nav>
</div>
<div class="nav-panel-explore" data-panel="explore">
<div class="context">
<span class="title">Documentation</span>
<span class="version">master</span>
</div>
<ul class="components">
<li class="component is-current">
<span class="title">Documentation</span>
<ul class="versions">
<li class="version is-current is-latest">
<a href="../../../index.html">master</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
</aside>
</div>
<main class="article">
<div class="toolbar" role="navigation">
<button class="nav-toggle"></button>
<a href="../../../index.html" class="home-link"></a>
<nav class="breadcrumbs" aria-label="breadcrumbs">
<ul>
<li><a href="../../../index.html">Documentation</a></li>
<li><a href="../../../subprojects.html">Subprojects</a></li>
<li><a href="../../apache-felix-dependency-manager.html">Apache Felix Dependency Manager</a></li>
<li>Reference</li>
<li><a href="dependency-resource.html">Dependency Manager - Resource Dependency</a></li>
</ul>
</nav>
<div class="edit-this-page"><a href="https://github.com/apache/felix-antora-site/edit/main/modules/ROOT/pages/subprojects/apache-felix-dependency-manager/reference/dependency-resource.adoc">Edit this Page</a></div>
</div>
<div class="content">
<article class="doc">
<h1 class="page">Dependency Manager - Resource Dependency</h1>
<div class="paragraph">
<p>A resource dependency allows you to depend on a resource.
A resource is a URL and you can use a filter condition based on protocol, host, port, path and URL.</p>
</div>
<div class="paragraph">
<p>To define a resource dependency, you need to use the <a href="http://felix.apache.org/apidocs/dependencymanager/r13/org/apache/felix/dm/ResourceDependency.html">ResourceDependecy</a> interface.
This interface can be created using DependencyActivatorBase.createResourceDependency() or DependencyManager.createResourceDependency() methods;</p>
</div>
<div class="paragraph">
<p>Here is an example where a bundle activation declares a VideoPlayer component which depends on a resource URL.
The component uses an optional dependency callback, which is invoked each time an URL is registered.</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public class Activator extends DependencyActivatorBase {
@Override
public void init(BundleContext ctx, DependencyManager dm) throws Exception {
Component videoPlayer = createComponent()
.setImplementation(VideoPlayer.class)
.add(createResourceDependency().setFilter("(&amp;(path=/path/to/*.txt)(host=localhost))").setCallbacks("play", null));
dm.add(videoPlayer);
}
}
public class VideoPlayer {
void play(URL url) {
System.out.println("play: " + url);
}
}</code></pre>
</div>
</div>
<div class="paragraph">
<p>And here is a component which registers some URL resources:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public class Activator extends DependencyActivatorBase {
@Override
public void init(BundleContext ctx, DependencyManager dm) throws Exception {
// add resource provider
URL[] resourceURLs = new URL[] {
new URL("file://localhost/path/to/file1.txt"),
new URL("file://localhost/path/to/file2.txt")
};
Component resourceProvider = createComponent()
.setImplementation(new ResourceProvider(ctx, resourceURLs))
.add(dm.createServiceDependency().setService(ResourceHandler.class).setCallbacks("add", "remove"));
dm.add(resourceProvider);
}
}
class ResourceProvider {
final URL[] m_resources;
final BundleContext m_context;
final Map&lt;ResourceHandler, Filter&gt; m_handlers = new HashMap&lt;&gt;();
ResourceProvider(BundleContext ctx, URL ... resources) {
m_context = ctx;
m_resources = resources;
}
public void add(ServiceReference&lt;?&gt; ref, ResourceHandler handler) {
String filterString = (String) ref.getProperty("filter");
Filter filter = null;
if (filterString != null) {
try {
filter = m_context.createFilter(filterString);
}
catch (InvalidSyntaxException e) {
return;
}
}
for (int i = 0; i &lt; m_resources.length; i++) {
if (filter == null || filter.match((Dictionary&lt;String, ?&gt;) ResourceUtil.createProperties(m_resources[i]))) {
synchronized (m_handlers) {
m_handlers.put(handler, filter);
}
handler.added(m_resources[i]);
}
}
}
public void remove(ServiceReference&lt;?&gt; ref, ResourceHandler handler) {
Filter filter;
synchronized (m_handlers) {
filter = (Filter) m_handlers.remove(handler);
}
if (filter != null) {
for (int i = 0; i &lt; m_resources.length; i++) {
if (filter == null || filter.match((Dictionary&lt;String, ?&gt;) ResourceUtil.createProperties(m_resources[i]))) {
handler.removed(m_resources[i]);
}
}
}
}</code></pre>
</div>
</div>
</article>
<aside class="toc sidebar" data-title="Contents" data-levels="2">
<div class="toc-menu"></div>
</aside>
</div>
</main>
</div>
<footer class="footer">
<p>Content licensed under AL2. UI licensed under MPL-2.0 with extensions licensed under AL2</p>
</footer>
<script src="../../../../_/js/site.js"></script>
<script async src="../../../../_/js/vendor/highlight.js"></script>
</body>
</html>