Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| RichFaces Core API 4.2.2.Final
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.richfaces.el.util
Class ELUtils

    java.lang.Object
      org.richfaces.el.util.ELUtils

    public final class ELUtils

extends Object

Author:
  asmirnov

Method Summary
`static
`<T> T`
` | `coerce(Object value, Class<T> targetType)` Coerce the given object to targetType.
`static javax.el.ValueExpression` | `createValueExpression(javax.faces.context.FacesContext context, String expression, boolean literal, Class<?> expectedType)` Creates value expression from string and stores expression's expected type.
`static javax.el.ValueExpression` | `createValueExpression(String expression)` Create a `ValueExpression` with the expected type of `Object.class`
`static javax.el.ValueExpression` | `createValueExpression(String expression, Class<?> expectedType)` Creates value expression from string and stores expression's expected type
`static Object` | `evaluateValueExpression(javax.el.ValueExpression expression, javax.el.ELContext elContext)`
`static boolean` | `isValueReference(String value)` Get EL-enabled value.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### isValueReference

    public static boolean isValueReference(String value)

  Get EL-enabled value. Return same string, if not el-expression. Otherthise, return parsed and evaluated expression.

  Parameters:
    `context` - - current Faces Context.
    `value` - - string to parse.
  Returns:
    - interpreted el or unmodified value.

### createValueExpression

    public static javax.el.ValueExpression createValueExpression(String expression)

  Create a `ValueExpression` with the expected type of `Object.class`

  Parameters:
    `expression` - an EL expression
  Returns:
    a new `ValueExpression` instance based off the provided `valueRef`

### createValueExpression

    public static javax.el.ValueExpression createValueExpression(String expression,
                                                                 Class<?> expectedType)

  Creates value expression from string and stores expression's expected type

  Parameters:
    `expression` - string with EL expressions
    `expectedType` - the type expected from expression after evaluation
  Returns:
    value expression from string and stores expression's expected type

### evaluateValueExpression

    public static Object evaluateValueExpression(javax.el.ValueExpression expression,
                                                 javax.el.ELContext elContext)

### createValueExpression

    public static javax.el.ValueExpression createValueExpression(javax.faces.context.FacesContext context,
                                                                 String expression,
                                                                 boolean literal,
                                                                 Class<?> expectedType)

  Creates value expression from string and stores expression's expected type.

  If the literal is provided, constant value expression is used instead.

  Parameters:
    `context` - current `FacesContext`
    `expression` - string with EL expressions
    `literal` - determined if the literal value is required
    `expectedType` - the type expected from expression after evaluation
  Returns:
    value expression from string and stores expression's expected type

### coerce

    public static <T> T coerce(Object value,
                               Class<T> targetType)

  Coerce the given object to targetType.

  Parameters:
    `value` - object to be coerced
    `targetType` - which should be object coerced into
  Returns:
    the given value coerced to targetType

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| RichFaces Core API 4.2.2.Final
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Copyright © 2012 JBoss by Red Hat. All Rights Reserved.