org.springframework.scripting.bsh
Class BshScriptUtils

java.lang.Object
  org.springframework.scripting.bsh.BshScriptUtils

public abstract class BshScriptUtils
extends java.lang.Object

Utility methods for handling BeanShell-scripted objects.

Since:

2.0

Author:

Rob Harrop, Juergen Hoeller

Nested Class Summary

static class	BshScriptUtils.BshExecutionException Exception to be thrown on script execution failure.
private static class	BshScriptUtils.BshObjectInvocationHandler InvocationHandler that invokes a BeanShell script method.

Constructor Summary

BshScriptUtils()

Method Summary

static java.lang.Object	createBshObject(java.lang.String scriptSource) Create a new BeanShell-scripted object from the given script source.
static java.lang.Object	createBshObject(java.lang.String scriptSource, java.lang.Class[] scriptInterfaces) Create a new BeanShell-scripted object from the given script source, using the default ClassLoader.
static java.lang.Object	createBshObject(java.lang.String scriptSource, java.lang.Class[] scriptInterfaces, java.lang.ClassLoader classLoader) Create a new BeanShell-scripted object from the given script source.
(package private) static java.lang.Class	determineBshObjectType(java.lang.String scriptSource) Evaluate the specified BeanShell script based on the given script source, returning the Class defined by the script.
(package private) static java.lang.Object	evaluateBshScript(java.lang.String scriptSource, java.lang.Class[] scriptInterfaces, java.lang.ClassLoader classLoader) Evaluate the specified BeanShell script based on the given script source, keeping a returned script Class or script Object as-is.

Methods inherited from class java.lang.Object

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

Constructor Detail

BshScriptUtils

public BshScriptUtils()

Method Detail

createBshObject

public static java.lang.Object createBshObject(java.lang.String scriptSource)
                                        throws EvalError

Create a new BeanShell-scripted object from the given script source.

With this createBshObject variant, the script needs to declare a full class or return an actual instance of the scripted object.

Parameters:

scriptSource - the script source text

Returns:

the scripted Java object

Throws:

EvalError - in case of BeanShell parsing failure

createBshObject

public static java.lang.Object createBshObject(java.lang.String scriptSource,
                                               java.lang.Class[] scriptInterfaces)
                                        throws EvalError

Create a new BeanShell-scripted object from the given script source, using the default ClassLoader.

The script may either be a simple script that needs a corresponding proxy generated (implementing the specified interfaces), or declare a full class or return an actual instance of the scripted object (in which case the specified interfaces, if any, need to be implemented by that class/instance).

Parameters:

scriptSource - the script source text

scriptInterfaces - the interfaces that the scripted Java object is supposed to implement (may be null or empty if the script itself declares a full class or returns an actual instance of the scripted object)

Returns:

the scripted Java object

Throws:

EvalError - in case of BeanShell parsing failure

See Also:

createBshObject(String, Class[], ClassLoader)

createBshObject

public static java.lang.Object createBshObject(java.lang.String scriptSource,
                                               java.lang.Class[] scriptInterfaces,
                                               java.lang.ClassLoader classLoader)
                                        throws EvalError

Create a new BeanShell-scripted object from the given script source.

The script may either be a simple script that needs a corresponding proxy generated (implementing the specified interfaces), or declare a full class or return an actual instance of the scripted object (in which case the specified interfaces, if any, need to be implemented by that class/instance).

Parameters:

scriptSource - the script source text

scriptInterfaces - the interfaces that the scripted Java object is supposed to implement (may be null or empty if the script itself declares a full class or returns an actual instance of the scripted object)

classLoader - the ClassLoader to create the script proxy with

Returns:

the scripted Java object

Throws:

EvalError - in case of BeanShell parsing failure

determineBshObjectType

static java.lang.Class determineBshObjectType(java.lang.String scriptSource)
                                       throws EvalError

Evaluate the specified BeanShell script based on the given script source, returning the Class defined by the script.

The script may either declare a full class or return an actual instance of the scripted object (in which case the Class of the object will be returned). In any other case, the returned Class will be null.

Parameters:

scriptSource - the script source text

Returns:

the scripted Java class, or null if none could be determined

Throws:

EvalError - in case of BeanShell parsing failure

evaluateBshScript

static java.lang.Object evaluateBshScript(java.lang.String scriptSource,
                                          java.lang.Class[] scriptInterfaces,
                                          java.lang.ClassLoader classLoader)
                                   throws EvalError

Evaluate the specified BeanShell script based on the given script source, keeping a returned script Class or script Object as-is.

The script may either be a simple script that needs a corresponding proxy generated (implementing the specified interfaces), or declare a full class or return an actual instance of the scripted object (in which case the specified interfaces, if any, need to be implemented by that class/instance).

Parameters:

scriptSource - the script source text

scriptInterfaces - the interfaces that the scripted Java object is supposed to implement (may be null or empty if the script itself declares a full class or returns an actual instance of the scripted object)

classLoader - the ClassLoader to create the script proxy with

Returns:

the scripted Java class or Java object

Throws:

EvalError - in case of BeanShell parsing failure