org.webharvest.runtime.scripting

Class ScriptEngine

java.lang.Object

org.webharvest.runtime.scripting.ScriptEngine

Direct Known Subclasses:

BeanShellScriptEngine, GroovyScriptEngine, JavascriptScriptEngine

public abstract class ScriptEngine
extends Object

Abstract scripting engine.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map	context
static String	CONTEXT_VARIABLE_NAME

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ScriptEngine(Map context) Constructor - initializes context of variables.

Method Summary

Modifier and Type	Method and Description
void	dispose()
abstract Object	eval(String expression) Evaluates specified expression or code block.
protected void	pushAllVariablesFromContextToScriptEngine() Push all the variables from variables context to the script engine.
void	setInContext(String name, Object value) Sets the specified variable in the context.
abstract void	setVariable(String name, Object value) Sets variable in scripter context.

Methods inherited from class java.lang.Object

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

Field Detail

CONTEXT_VARIABLE_NAME

public static final String CONTEXT_VARIABLE_NAME

See Also:

Constant Field Values

context

protected Map context

Constructor Detail

ScriptEngine

protected ScriptEngine(Map context)

Constructor - initializes context of variables.

Parameters:

context -

Method Detail

setVariable

public abstract void setVariable(String name,
                                 Object value)

Sets variable in scripter context.

Parameters:

name -

value -

eval

public abstract Object eval(String expression)

Evaluates specified expression or code block.

Returns:

value of evaluation or null if there is nothing.

pushAllVariablesFromContextToScriptEngine

protected void pushAllVariablesFromContextToScriptEngine()

Push all the variables from variables context to the script engine.

setInContext

public void setInContext(String name,
                         Object value)

Sets the specified variable in the context.

Parameters:

name -

value -

dispose

public void dispose()