public abstract class ExpressionFactory
extends java.lang.Object
| Constructor and Description |
|---|
ExpressionFactory() |
| Modifier and Type | Method and Description |
|---|---|
abstract java.lang.Object |
coerceToType(java.lang.Object obj,
java.lang.Class<?> expectedType)
Coerce the supplied object to the requested type.
|
abstract MethodExpression |
createMethodExpression(ELContext context,
java.lang.String expression,
java.lang.Class<?> expectedReturnType,
java.lang.Class<?>[] expectedParamTypes)
Create a new method expression instance.
|
abstract ValueExpression |
createValueExpression(ELContext context,
java.lang.String expression,
java.lang.Class<?> expectedType)
Create a new value expression.
|
abstract ValueExpression |
createValueExpression(java.lang.Object instance,
java.lang.Class<?> expectedType) |
static ExpressionFactory |
newInstance()
Create a new
ExpressionFactory. |
static ExpressionFactory |
newInstance(java.util.Properties properties)
Create a new
ExpressionFactory passing in the provided
Properties. |
public static ExpressionFactory newInstance()
ExpressionFactory. The class to use is determined by
the following search order:
public static ExpressionFactory newInstance(java.util.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, java.lang.String expression, java.lang.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
expressionjava.lang.NullPointerException - If the expected type is nullELException - If there are syntax errors in the provided expressionpublic abstract ValueExpression createValueExpression(java.lang.Object instance, java.lang.Class<?> expectedType)
public abstract MethodExpression createMethodExpression(ELContext context, java.lang.String expression, java.lang.Class<?> expectedReturnType, java.lang.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 parametersjava.lang.NullPointerException - If the expected parameters types are nullELException - If there are syntax errors in the provided expressionpublic abstract java.lang.Object coerceToType(java.lang.Object obj,
java.lang.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.