org.apache.felix.framework

Class URLHandlersStreamHandlerProxy

java.lang.Object

java.net.URLStreamHandler

org.apache.felix.framework.URLHandlersStreamHandlerProxy

All Implemented Interfaces:

InvocationHandler, URLStreamHandlerSetter

public class URLHandlersStreamHandlerProxy
extends URLStreamHandler
implements URLStreamHandlerSetter, InvocationHandler

This class implements a stream handler proxy. When the stream handler proxy instance is created, it is associated with a particular protocol and will answer all future requests for handling of that stream type. It does not directly handle the stream handler requests, but delegates the requests to an underlying stream handler service.

The proxy instance for a particular protocol is used for all framework instances that may contain their own stream handler services. When performing a stream handler operation, the proxy retrieves the handler service from the framework instance associated with the current call stack and delegates the call to the handler service.

The proxy will create simple stream handler service trackers for each framework instance. The trackers will listen to service events in its respective framework instance to maintain a reference to the "best" stream handler service at any given time.

Constructor Summary

Constructors

Constructor and Description
URLHandlersStreamHandlerProxy(String protocol, SecureAction action, URLStreamHandler builtIn, URL builtInURL)

Method Summary

Modifier and Type	Method and Description
protected boolean	equals(URL url1, URL url2)
protected int	getDefaultPort()
protected InetAddress	getHostAddress(URL url)
protected int	hashCode(URL url)
protected boolean	hostsEqual(URL url1, URL url2)
Object	invoke(Object obj, Method method, Object[] params)
protected URLConnection	openConnection(URL url)
protected URLConnection	openConnection(URL url, Proxy proxy)
protected void	parseURL(URL url, String spec, int start, int limit)
protected boolean	sameFile(URL url1, URL url2)
void	setURL(URL url, String protocol, String host, int port, String file, String ref)
void	setURL(URL url, String protocol, String host, int port, String authority, String userInfo, String path, String query, String ref)
protected String	toExternalForm(URL url)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

URLHandlersStreamHandlerProxy

public URLHandlersStreamHandlerProxy(String protocol,
                                     SecureAction action,
                                     URLStreamHandler builtIn,
                                     URL builtInURL)

Method Detail

equals

protected boolean equals(URL url1,
                         URL url2)

Overrides:

equals in class URLStreamHandler

getDefaultPort

protected int getDefaultPort()

Overrides:

getDefaultPort in class URLStreamHandler

getHostAddress

protected InetAddress getHostAddress(URL url)

Overrides:

getHostAddress in class URLStreamHandler

hashCode

protected int hashCode(URL url)

Overrides:

hashCode in class URLStreamHandler

hostsEqual

protected boolean hostsEqual(URL url1,
                             URL url2)

Overrides:

hostsEqual in class URLStreamHandler

openConnection

protected URLConnection openConnection(URL url)
                                throws IOException

Specified by:

openConnection in class URLStreamHandler

Throws:

IOException

openConnection

protected URLConnection openConnection(URL url,
                                       Proxy proxy)
                                throws IOException

Overrides:

openConnection in class URLStreamHandler

Throws:

IOException

parseURL

protected void parseURL(URL url,
                        String spec,
                        int start,
                        int limit)

Overrides:

parseURL in class URLStreamHandler

sameFile

protected boolean sameFile(URL url1,
                           URL url2)

Overrides:

sameFile in class URLStreamHandler

setURL

public void setURL(URL url,
                   String protocol,
                   String host,
                   int port,
                   String authority,
                   String userInfo,
                   String path,
                   String query,
                   String ref)

Specified by:

setURL in interface URLStreamHandlerSetter

Overrides:

setURL in class URLStreamHandler

See Also:

"java.net.URLStreamHandler.setURL(URL,String,String,int,String,String,String,String)"

setURL

public void setURL(URL url,
                   String protocol,
                   String host,
                   int port,
                   String file,
                   String ref)

Specified by:

setURL in interface URLStreamHandlerSetter

Overrides:

setURL in class URLStreamHandler

See Also:

"java.net.URLStreamHandler.setURL(URL,String,String,int,String,String)"

toExternalForm

protected String toExternalForm(URL url)

Overrides:

toExternalForm in class URLStreamHandler

invoke

public Object invoke(Object obj,
                     Method method,
                     Object[] params)
              throws Throwable

Specified by:

invoke in interface InvocationHandler

Throws:

Throwable