public abstract class ExpressionFactory extends Object
| Constructor and Description | 
|---|
| ExpressionFactory() | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract Object | coerceToType(Object obj,
            Class<?> expectedType)Coerce the supplied object to the requested type. | 
| abstract MethodExpression | createMethodExpression(ELContext context,
                      String expression,
                      Class<?> expectedReturnType,
                      Class<?>[] expectedParamTypes)Create a new method expression instance. | 
| abstract ValueExpression | createValueExpression(ELContext context,
                     String expression,
                     Class<?> expectedType)Create a new value expression. | 
| abstract ValueExpression | createValueExpression(Object instance,
                     Class<?> expectedType) | 
| static ExpressionFactory | newInstance()Create a new  ExpressionFactory. | 
| static ExpressionFactory | newInstance(Properties properties)Create a new  ExpressionFactorypassing in the providedProperties. | 
public static ExpressionFactory newInstance()
ExpressionFactory. The class to use is determined by
 the following search order:
 public static ExpressionFactory newInstance(Properties properties)
ExpressionFactory passing in the provided
 Properties. Search order is the same as newInstance().properties - the properties to be passed to the new instance (may be null)public abstract ValueExpression createValueExpression(ELContext context, String expression, Class<?> expectedType)
context - The EL context for this evaluationexpression - The String representation of the value expressionexpectedType - The expected type of the result of evaluating the
                     expressionNullPointerException - If the expected type is nullELException - If there are syntax errors in the provided expressionpublic abstract ValueExpression createValueExpression(Object instance, Class<?> expectedType)
public abstract MethodExpression createMethodExpression(ELContext context, String expression, Class<?> expectedReturnType, Class<?>[] expectedParamTypes)
context - The EL context for this evaluationexpression - The String representation of the method
                           expressionexpectedReturnType - The expected type of the result of invoking the
                           methodexpectedParamTypes - The expected types of the input parametersNullPointerException - If the expected parameters types are nullELException - If there are syntax errors in the provided expressionpublic abstract Object coerceToType(Object obj, Class<?> expectedType)
obj - The object to be coercedexpectedType - The type to which the object should be coercedELException - If the conversion failsCopyright © 2000-2020 Apache Software Foundation. All Rights Reserved.