Examples of org.osgi.framework.Filter

org.osgi.framework.Filter
etf.org/rfc/rfc1960.txt">RFC 1960-based Filter.
{@code Filter}s can be created by calling {@link BundleContext#createFilter(String)} or{@link FrameworkUtil#createFilter(String)} with a filter string.
A {@code Filter} can be used numerous times to determine if the matchargument matches the filter string that was used to create the {@code Filter}.
Some examples of LDAP filters are:
```
 "(cn=Babs Jensen)" "(!(cn=Tim Howes))" "(&(" + Constants.OBJECTCLASS + "=Person)(|(sn=Jensen)(cn=Babs J*)))" "(o=univ*of*mich*)" 
```
@since 1.1 @see "Core Specification, Filters, for a description of the filter string syntax." @ThreadSafe @author $Id: 58cd4db16892b20e44be1288ccac929a5a26c53a $

                } else {
                    fil = fromFilter;
                }
            }


            Filter filter = null;
            if (fil != null) {
                try {
                    filter = getInstanceManager().getContext().createFilter(fil);
                } catch (InvalidSyntaxException e) {
                    throw new ConfigurationException("A requirement filter is invalid : " + filter, e);

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    ConfigurationImpl[] listConfigurations( ConfigurationAdminImpl configurationAdmin, String filterString )
        throws IOException, InvalidSyntaxException
    {
        Filter filter = null;
        if ( filterString != null )
        {
            filter = bundleContext.createFilter( filterString );
        }


        log( LogService.LOG_DEBUG, "Listing configurations matching {0}", new Object[]
            { filterString } );


        List configList = new ArrayList();


        PersistenceManager[] pmList = getPersistenceManagers();
        for ( int i = 0; i < pmList.length; i++ )
        {
            Enumeration configs = pmList[i].getDictionaries();
            while ( configs.hasMoreElements() )
            {
                final Dictionary config = ( Dictionary ) configs.nextElement();


                // ignore non-Configuration dictionaries
                final String pid = ( String ) config.get( Constants.SERVICE_PID );
                if ( pid == null )
                {
                    continue;
                }


                // CM 1.4 / 104.13.2.3 Permission required
                if ( !configurationAdmin.hasPermission( this,
                    ( String ) config.get( ConfigurationAdmin.SERVICE_BUNDLELOCATION ) ) )
                {
                    log(
                        LogService.LOG_DEBUG,
                        "Omitting configuration {0}: No permission for bundle {1} on configuration bound to {2}",
                        new Object[]
                            { pid, configurationAdmin.getBundle().getLocation(),
                                config.get( ConfigurationAdmin.SERVICE_BUNDLELOCATION ) } );
                    continue;
                }


                // check filter
                if ( filter == null || filter.match( config ) )
                {
                    // ensure the service.pid and returned a cached config if available
                    ConfigurationImpl cfg = getCachedConfiguration( pid );
                    if ( cfg == null )
                    {

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        BundleContext bundleContext = ctx.getBundleContext();
        StringBuilder builder = new StringBuilder();
        builder.append("(&(");
        builder.append(Constants.OBJECTCLASS).append("=").append(Importer.SERVICE_NAME).append(")");
        builder.append("(displayName=*))");
        Filter filter = bundleContext.createFilter(builder.toString());
        this.tracker = new ServiceTracker(bundleContext, filter, null);
        this.tracker.open();
    }

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            dict.put(key, configMap.get(key));
        }
        // Compute expression
        try
        {
            Filter filter = FrameworkUtil.createFilter(expr);
            return filter.match(dict);
        }
        catch (Exception ex)
        {
            throw new BundleException(
                "Error evaluating filter expression: " + expr, ex);

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            m_manager.getFactory().getLogger().log(Logger.ERROR, "A factory cannot be created", e);
        }


        try {
            Class spec = DependencyMetadataHelper.loadSpecification(m_composition.getSpecificationMetadata().getName(), m_context);
            Filter filter = m_context.createFilter("(instance.name=" + m_instanceName + ")");
            // Create the exports
            m_exports = new ServiceExporter(spec, filter, false, false, null, DependencyModel.DYNAMIC_BINDING_POLICY, m_scope, m_context, this, m_manager);
        } catch (InvalidSyntaxException e) {
            throw new CompositionException("A provided service filter is invalid", e);
        } catch (ConfigurationException e) {

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         * @throws ConfigurationException : the context-source name is invalid.
         */
        public SourceTracker(String name, BundleContext countext) throws ConfigurationException {
            String fil = "(&(" + Constants.OBJECTCLASS + "=" + ContextSource.class.getName() + ")(" + SOURCE_NAME + "=" + name + "))";
            try {
                Filter filter = countext.createFilter(fil);
                m_tracker = new Tracker(countext, filter, this);
            } catch (InvalidSyntaxException e) {
                throw new ConfigurationException("A Context source filter is invalid " + fil, e);
            }
        }

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        String givenFilter = service.getAttribute("filter");
        if (givenFilter != null) {
            filter = "(&" + filter + givenFilter + ")"; //NOPMD
        }


        Filter fil;
        try {
            fil = getCompositeManager().getGlobalContext().createFilter(filter);
        } catch (InvalidSyntaxException e) {
            throw new ConfigurationException("Malformed filter " + filter, e);
        }

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            // Configure instance filter if available
            if (confFilter != null && identitity != null && confFilter.get(identitity) != null) {
                filter = "(&" + original + (String) confFilter.get(identitity) + ")";
            }


            Filter fil = null;
            if (filter != null) {
                try {
                    fil = getCompositeManager().getGlobalContext().createFilter(filter);
                } catch (InvalidSyntaxException e) {
                    throw new ConfigurationException("A required filter " + filter + " is malformed", e);

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                String givenFilter = provides[i].getAttribute("filter");
                if (givenFilter != null) {
                    filter = "(&" + filter + givenFilter + ")"; //NOPMD
                }


                Filter fil = null;
                try {
                    fil = m_context.createFilter(filter);
                } catch (InvalidSyntaxException e) {
                    throw new ConfigurationException("An exporter filter is invalid " + filter, e);
                }

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                filter = "(&" + filter + givenFilter + ")"; //NOPMD
            }


            BundleContext context = new PolicyServiceContext(getCompositeManager().getGlobalContext(), getCompositeManager().getParentServiceContext(), PolicyServiceContext.GLOBAL);


            Filter fil = null;
            try {
                fil = getCompositeManager().getGlobalContext().createFilter(filter);
            } catch (InvalidSyntaxException e) {
                throw new CompositionException("A required filter " + filter + " is malformed", e);
            }

View Full Code Here

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