Package de.businesscode.bcdui.el

Class ELEnvironment

java.lang.Object

de.businesscode.bcdui.el.ELEnvironment

public class ELEnvironment
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXPRESSION_FACTORY_NAME

Constructor Summary

Constructors

Constructor	Description
ELEnvironment(jakarta.servlet.http.HttpServletRequest request)
ELEnvironment(Object bean, String bindName)	creates environment to evaluate on a given bean
ELEnvironment(String prefix, Class<?> staticFunctionProvider)

Method Summary

Modifier and Type	Method	Description
Object	eval(String expression)
static String	evaluateExpression(String expression, Object targetBean, String beanBindName)	evaluates a String with possible EL with bcdBean in scope
static void	main(String[] args)
void	setVariable(String variableName, Object value)

Methods inherited from class java.lang.Object

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

Field Details

EXPRESSION_FACTORY_NAME

public static final String EXPRESSION_FACTORY_NAME

See Also:

• Constant Field Values

Constructor Details

ELEnvironment

public ELEnvironment(Object bean,
 String bindName)
              throws Exception

creates environment to evaluate on a given bean

Parameters:

bean - - the bean for evaluation

bindName - of the bean to be bound

Throws:

Exception

ELEnvironment

public ELEnvironment(jakarta.servlet.http.HttpServletRequest request)
              throws Exception

Throws:

Exception

ELEnvironment

public ELEnvironment(String prefix,
 Class<?> staticFunctionProvider)
              throws Exception

Throws:

Exception

Method Details

eval

public Object eval(String expression)

main

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

Throws:

Exception

setVariable

public void setVariable(String variableName,
 Object value)

evaluateExpression

public static String evaluateExpression(String expression,
 Object targetBean,
 String beanBindName)

evaluates a String with possible EL with bcdBean in scope

Parameters:

expression - to evaluate

targetBean - the bean to set into context

beanBindName - name to bind the bean to in context

Returns:

either a String if it does not contain expression, or evaluated expression, also may be null

Throws:

RuntimeException - in case the targetBean is null or the expression fails to evaluate