ExpressionFactoryImpl (Apache Tomcat 8.5.57 API Documentation)

org.apache.el

## Class ExpressionFactoryImpl

- java.lang.Object
- - javax.el.ExpressionFactory
  - - org.apache.el.ExpressionFactoryImpl

-     public class ExpressionFactoryImpl
      extends ExpressionFactory

  Author:
    Jacob Hookom [jacob@hookom.net]
  See Also:
    `ExpressionFactory`

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ExpressionFactoryImpl()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `coerceToType(Object obj, Class<?> type)` Coerce the supplied object to the requested type.
    `MethodExpression` | `createMethodExpression(ELContext context, String expression, Class<?> expectedReturnType, Class<?>[] expectedParamTypes)` Create a new method expression instance.
    `ValueExpression` | `createValueExpression(ELContext context, String expression, Class<?> expectedType)` Create a new value expression.
    `ValueExpression` | `createValueExpression(Object instance, Class<?> expectedType)`
    `ELResolver` | `getStreamELResolver()`

    - ### Methods inherited from class javax.el.ExpressionFactory

      `getInitFunctionMap, newInstance, newInstance`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### ExpressionFactoryImpl

          public ExpressionFactoryImpl()

  - ### Method Detail

    - #### coerceToType

          public Object coerceToType(Object obj,
                            Class<?> type)

      Description copied from class: `javax.el.ExpressionFactory`
      Coerce the supplied object to the requested type.
      Specified by:
        `coerceToType` in class `ExpressionFactory`
      Parameters:
        `obj` - The object to be coerced
        `type` - The type to which the object should be coerced
      Returns:
        An instance of the requested type.

    - #### createMethodExpression

          public MethodExpression createMethodExpression(ELContext context,
                                                String expression,
                                                Class<?> expectedReturnType,
                                                Class<?>[] expectedParamTypes)

      Description copied from class: `javax.el.ExpressionFactory`
      Create a new method expression instance.
      Specified by:
        `createMethodExpression` in class `ExpressionFactory`
      Parameters:
        `context` - The EL context for this evaluation
        `expression` - The String representation of the method expression
        `expectedReturnType` - The expected type of the result of invoking the method
        `expectedParamTypes` - The expected types of the input parameters
      Returns:
        A new method expression formed from the input parameters.

    - #### createValueExpression

          public ValueExpression createValueExpression(ELContext context,
                                              String expression,
                                              Class<?> expectedType)

      Description copied from class: `javax.el.ExpressionFactory`
      Create a new value expression.
      Specified by:
        `createValueExpression` in class `ExpressionFactory`
      Parameters:
        `context` - The EL context for this evaluation
        `expression` - The String representation of the value expression
        `expectedType` - The expected type of the result of evaluating the expression
      Returns:
        A new value expression formed from the input parameters

    - #### createValueExpression

          public ValueExpression createValueExpression(Object instance,
                                              Class<?> expectedType)

      Specified by:
        `createValueExpression` in class `ExpressionFactory`

    - #### getStreamELResolver

          public ELResolver getStreamELResolver()

      Overrides:
        `getStreamELResolver` in class `ExpressionFactory`
      Returns:
        This default implementation returns null

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