com.hammurapi.common

Class ScriptURLStreamHandler

java.lang.Object

java.net.URLStreamHandler

com.hammurapi.common.ScriptURLStreamHandler

public class ScriptURLStreamHandler
extends URLStreamHandler

This class handles script protocol/schema and evaluates expressions using Java Scripting framework. Expression language extension is passed as authority and expression is passed as path, e.g. script://java/myObject.toString(). Evaluation result is converted to input stream in the following way: a) If it is input stream then it is returned as is. b) If it is Reader then it is wrapped into input stream. c) If it is null, then null is returned. d) Result is converted to String with toString() method and string bytes are returned as input stream.

Field Summary

Fields

Modifier and Type	Field and Description
static String	SCRIPT_PROTOCOL

Constructor Summary

Constructors

Constructor and Description
ScriptURLStreamHandler(ClassLoader classLoader, Map<String,Object> bindings)
ScriptURLStreamHandler(Map<String,Object> bindings)

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args)
protected URLConnection	openConnection(URL u)

Methods inherited from class java.net.URLStreamHandler

equals, getDefaultPort, getHostAddress, hashCode, hostsEqual, openConnection, parseURL, sameFile, setURL, setURL, toExternalForm

Methods inherited from class java.lang.Object

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

Field Detail

SCRIPT_PROTOCOL

public static final String SCRIPT_PROTOCOL

See Also:

Constant Field Values

Constructor Detail

ScriptURLStreamHandler

public ScriptURLStreamHandler(ClassLoader classLoader,
                      Map<String,Object> bindings)

Parameters:

classLoader - ClassLoader to use to load script engines and other classes.

bindings - Bindings for evaluating script expression.

ScriptURLStreamHandler

public ScriptURLStreamHandler(Map<String,Object> bindings)

Parameters:

bindings - Bindings for evaluating script expression.

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

openConnection

protected URLConnection openConnection(URL u)
                                throws IOException

Specified by:

openConnection in class URLStreamHandler

Throws:

IOException