constants.java

OSGI这是一个中间件,与UPNP齐名,是用于移植到嵌入式平台之上

     * Import-Package Manifest header like:
     * <pre>
     * Import-Package: org.osgi.framework ; specification-version="1.1"
     * </pre>
     */
    public static final String PACKAGE_SPECIFICATION_VERSION =
    "specification-version";

    /**
     * Manifest header attribute (named &quot;processor&quot;) identifying the processor
     * required to run native bundle code specified in the Bundle-NativeCode Manifest header).
     *
     * <p>The attribute value is encoded in the Bundle-NativeCode Manifest header like:
     * <pre>
     * Bundle-NativeCode: http.so ; processor=x86 ...
     * </pre>
     */
    public static final String BUNDLE_NATIVECODE_PROCESSOR = "processor";

    /**
     * Manifest header attribute (named &quot;osname&quot;) identifying the
     * operating system required to run native bundle code specified in the Bundle-NativeCode
     * Manifest header).
     * <p>The attribute value is encoded in the Bundle-NativeCode Manifest header like:
     * <pre>
     * Bundle-NativeCode: http.so ; osname=Linux ...
     * </pre>
     */
    public static final String BUNDLE_NATIVECODE_OSNAME = "osname";

    /**
     * Manifest header attribute (named &quot;osversion&quot;) identifying the
     * operating system version required to run native bundle code specified in the Bundle-NativeCode
     * Manifest header).
     * <p>The attribute value is encoded in the Bundle-NativeCode Manifest header like:
     * <pre>
     * Bundle-NativeCode: http.so ; osversion="2.34" ...
     * </pre>
     */
    public static final String BUNDLE_NATIVECODE_OSVERSION = "osversion";

    /**
     * Manifest header attribute (named &quot;language&quot;) identifying the
     * language in which the native bundle code is written specified in the
     * Bundle-NativeCode Manifest header. See ISO 639 for possible values.
     * <p>The attribute value is encoded in the Bundle-NativeCode Manifest header like:
     * <pre>
     * Bundle-NativeCode: http.so ; language=nl_be ...
     * </pre>
     */
    public static final String BUNDLE_NATIVECODE_LANGUAGE = "language";

    /**
     * Manifest header (named &quot;Bundle-RequiredExecutionEnvironment&quot;)
     * identifying the required
     * execution environment for the bundle.  The service platform may run this
     * bundle if any of the execution environments named in this header matches
     * one of the execution environments it
     * implements.
     *
     * <p>The attribute value may be retrieved from the
     * <tt>Dictionary</tt> object returned by the <tt>Bundle.getHeaders</tt> method.
     * @since 1.2
     */
    public static final String BUNDLE_REQUIREDEXECUTIONENVIRONMENT = "Bundle-RequiredExecutionEnvironment";


    /*
     * Framework environment properties.
     */

    /**
     * Framework environment property (named &quot;org.osgi.framework.version&quot;)
     * identifying the Framework version.
     *
     * <p>The value of this property may be retrieved by calling the
    * <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_VERSION =
    "org.osgi.framework.version";

    /**
     * Framework environment property (named &quot;org.osgi.framework.vendor&quot;)
     * identifying the Framework implementation vendor.
     *
     * <p>The value of this property may be retrieved by calling the
     * <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_VENDOR = "org.osgi.framework.vendor";

    /**
     * Framework environment property (named &quot;org.osgi.framework.language&quot;)
     * identifying the Framework implementation language (see ISO 639 for possible values).
     *
     * <p>The value of this property may be retrieved by calling the
     * <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_LANGUAGE =
    "org.osgi.framework.language";

    /**
     * Framework environment property (named &quot;org.osgi.framework.os.name&quot;)
     * identifying the Framework host-computer's operating system.
     *
     * <p>The value of this property may be retrieved by calling the <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_OS_NAME =
    "org.osgi.framework.os.name";

    /**
     * Framework environment property (named &quot;org.osgi.framework.os.version&quot;)
     * identifying the Framework host-computer's operating system version number.
     *
     * <p>The value of this property may be retrieved by calling the <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_OS_VERSION =
    "org.osgi.framework.os.version";

    /**
     * Framework environment property (named &quot;org.osgi.framework.processor&quot;)
     * identifying the Framework host-computer's processor name.
     * <p>The value of this property may be retrieved by calling the <tt>BundleContext.getProperty</tt> method.
     */
    public static final String FRAMEWORK_PROCESSOR =
    "org.osgi.framework.processor";

    /**
     * Framework environment property (named &quot;org.osgi.framework.executionenvironment&quot;)
     * identifying execution environments provided by the Framework.
     * <p>The value of this property may be retrieved by calling the <tt>BundleContext.getProperty</tt> method.
     * @since 1.2
     */
    public static final String FRAMEWORK_EXECUTIONENVIRONMENT =
    "org.osgi.framework.executionenvironment";


    /*
     * Service properties.
     */

    /**
     * Service property (named &quot;objectClass&quot;)
     * identifying all of the class names under which a service was registered in the Framework
     * (of type <tt>java.lang.String[]</tt>).
     *
     * <p>This property is set by the Framework when a service is registered.
     */
    public static final String OBJECTCLASS = "objectClass";

    /**
     * Service property (named &quot;service.id&quot;) identifying a service's
     * registration number (of type <tt>java.lang.Long</tt>).
     *
     * <p>The value of this property is assigned by the Framework when a
     * service is registered. The Framework assigns a unique value that
     * is larger than all previously assigned values since the Framework was
     * started.
     * These values are NOT persistent across restarts of the Framework.
     */
    public static final String SERVICE_ID = "service.id";

    /**
     * Service property (named &quot;service.pid&quot;) identifying a service's
     * persistent identifier.
     *
     * <p>This property may be supplied in the <tt>properties</tt>
     * <tt>Dictionary</tt> object passed to the <tt>BundleContext.registerService</tt> method.
     *
     * <p>A service's persistent identifier uniquely identifies the service
     * and persists across multiple Framework invocations.
     *
     * <p>By convention, every bundle has its own unique namespace,
     * starting with the bundle's identifier (see {@link Bundle#getBundleId})
     * and followed by a dot (.). A bundle may use this as the prefix of the
     * persistent identifiers for the services it registers.
     */
    public static final String SERVICE_PID = "service.pid";

    /**
     * Service property (named &quot;service.ranking&quot;)
     * identifying a service's ranking number (of type <tt>java.lang.Integer</tt>).
     *
     * <p>This property may be supplied in the <tt>properties
     * Dictionary</tt> object passed to the <tt>BundleContext.registerService</tt> method.
     *
     * <p>The service ranking is used by the Framework to determine the
     * <i>default</i> service to be returned from a call to the
     * {@link BundleContext#getServiceReference}method:
     * If more than one service implements the specified class, the <tt>ServiceReference</tt> object with
     * the highest ranking is returned.
     *
     * <p>The default ranking is zero (0). A service with a ranking of <tt>Integer.MAX_VALUE</tt>
     * is very likely to be returned as the default service, whereas a service with a ranking of
     * <tt>Integer.MIN_VALUE</tt> is very unlikely to be returned.
     *
     * <p>If the supplied property value is not of type <tt>java.lang.Integer</tt>,
     * it is deemed to have a ranking value of zero.
     */
     public static final String SERVICE_RANKING = "service.ranking";

    /**
     * Service property (named &quot;service.vendor&quot;) identifying a service's vendor.
     *
     * <p>This property may be supplied in the properties <tt>Dictionary</tt> object passed to
     * the <tt>BundleContext.registerService</tt> method.
     */
     public static final String SERVICE_VENDOR = "service.vendor";

    /**
     * Service property (named &quot;service.description&quot;)
     * identifying a service's description.
     *
     * <p>This property may be supplied in the properties <tt>Dictionary</tt>
     * object passed to the <tt>BundleContext.registerService</tt> method.
     */
     public static final String SERVICE_DESCRIPTION = "service.description";
}