JavaEE API 8.0.1 · javax.faces.validator.MethodExpressionValidator

Modifier and Type	Field and Description
private static final String	BEANS_VALIDATION_AVAILABLE
private MethodExpression	methodExpression
private boolean	transientValue
private static final String	VALIDATE_EMPTY_FIELDS_PARAM_NAME
private Boolean	validateEmptyFields

Access	Constructor and Description
public	MethodExpressionValidator()
public	MethodExpressionValidator(MethodExpression the expression to wrap methodExpression) Construct a `Validator` that contains a `MethodExpression`.

Method Summary

Modifier and Type	Method and Description
private boolean	isBeansValidationAvailable(FacesContext context)
public boolean	isTransient() Implements javax.faces.component.StateHolder.isTransient. If true, the Object implementing this interface must not participate in state saving or restoring.
public void	restoreState(FacesContext the Faces context. context, Object the state. state) Implements javax.faces.component.StateHolder.restoreState. Perform any processing required to restore the state from the entries in the state Object.
public Object	saveState(FacesContext the Faces context. context) Implements javax.faces.component.StateHolder.saveState. Gets the state of the instance as a `Serializable` Object.
public void	setTransient(boolean boolean pass `true` if this Object will not participate in state saving or restoring, otherwise pass `false`. transientValue) Implements javax.faces.component.StateHolder.setTransient. Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.
public void	validate(FacesContext FacesContext for the request we are processing context, UIComponent UIComponent we are checking for correctness component, Object the value to validate value) Implements javax.faces.validator.Validator.validate. Perform the correctness checks implemented by this `Validator` against the specified `UIComponent`.
private boolean	validateEmptyFields(FacesContext ctx)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

BEANS_VALIDATION_AVAILABLE	back to summary
private static final String BEANS_VALIDATION_AVAILABLE

methodExpression	back to summary
private MethodExpression methodExpression

transientValue	back to summary
private boolean transientValue

VALIDATE_EMPTY_FIELDS_PARAM_NAME	back to summary
private static final String VALIDATE_EMPTY_FIELDS_PARAM_NAME

validateEmptyFields	back to summary
private Boolean validateEmptyFields

MethodExpressionValidator	back to summary
public MethodExpressionValidator()

MethodExpressionValidator	back to summary
public MethodExpressionValidator(MethodExpression methodExpression) Construct a `Validator` that contains a `MethodExpression`. Parameters methodExpression:MethodExpression the expression to wrap

Method Detail

isBeansValidationAvailable	back to summary
private boolean isBeansValidationAvailable(FacesContext context)

isTransient back to summary

isTransient	back to summary
public boolean isTransient() Implements javax.faces.component.StateHolder.isTransient. Doc from javax.faces.component.StateHolder.isTransient. If true, the Object implementing this interface must not participate in state saving or restoring. Returns:boolean `true` if transient, `false` otherwise. Annotations @Override

public boolean isTransient()

Implements javax.faces.component.StateHolder.isTransient.

Doc from javax.faces.component.StateHolder.isTransient.

If true, the Object implementing this interface must not participate in state saving or restoring.

Returns:boolean

true if transient, false otherwise.

Annotations

@Override

restoreState back to summary

restoreState	back to summary
public void restoreState(FacesContext context, Object state) Implements javax.faces.component.StateHolder.restoreState. Doc from javax.faces.component.StateHolder.restoreState. Perform any processing required to restore the state from the entries in the state Object. If the class that implements this interface has references to instances that also implement StateHolder (such as a `UIComponent` with event handlers, validators, etc.) this method must call the `restoreState` method on all those instances as well. If the `state` argument is `null`, take no action and return. Parameters context:FacesContext the Faces context. state:Object the state. Annotations @Override

public void restoreState(FacesContext context, Object state)

Implements javax.faces.component.StateHolder.restoreState.

Doc from javax.faces.component.StateHolder.restoreState.

Perform any processing required to restore the state from the entries in the state Object.

If the class that implements this interface has references to instances that also implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the restoreState method on all those instances as well.

If the state argument is null, take no action and return.

Parameters

context:FacesContext: the Faces context.
state:Object: the state.

Annotations

@Override

saveState back to summary

saveState	back to summary
public Object saveState(FacesContext context) Implements javax.faces.component.StateHolder.saveState. Doc from javax.faces.component.StateHolder.saveState. Gets the state of the instance as a `Serializable` Object. If the class that implements this interface has references to instances that implement StateHolder (such as a `UIComponent` with event handlers, validators, etc.) this method must call the `saveState` method on all those instances as well. This method must not save the state of children and facets. That is done via the `javax.faces.application.StateManager` This method must not alter the state of the implementing object. In other words, after executing this code: `Object state = component.saveState(facesContext);` `component` should be the same as before executing it. The return from this method must be `Serializable` Parameters context:FacesContext the Faces context. Returns:Object the saved state. Annotations @Override

public Object saveState(FacesContext context)

Implements javax.faces.component.StateHolder.saveState.

Doc from javax.faces.component.StateHolder.saveState.

Gets the state of the instance as a Serializable Object.

If the class that implements this interface has references to instances that implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the saveState method on all those instances as well. This method must not save the state of children and facets. That is done via the javax.faces.application.StateManager

This method must not alter the state of the implementing object. In other words, after executing this code:


Object state = component.saveState(facesContext);

component should be the same as before executing it.

The return from this method must be Serializable

Parameters

context:FacesContext: the Faces context.

Returns:Object

the saved state.

Annotations

@Override

setTransient back to summary

setTransient	back to summary
public void setTransient(boolean transientValue) Implements javax.faces.component.StateHolder.setTransient. Doc from javax.faces.component.StateHolder.setTransient. Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring. Parameters transientValue:boolean boolean pass `true` if this Object will not participate in state saving or restoring, otherwise pass `false`. Annotations @Override

public void setTransient(boolean transientValue)

Implements javax.faces.component.StateHolder.setTransient.

Doc from javax.faces.component.StateHolder.setTransient.

Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.

Parameters

transientValue:boolean: boolean pass true if this Object will not participate in state saving or restoring, otherwise pass false.

Annotations

@Override

validate back to summary

validate	back to summary
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException Implements javax.faces.validator.Validator.validate. Doc from javax.faces.validator.Validator.validate. Perform the correctness checks implemented by this `Validator` against the specified `UIComponent`. If any violations are found, a `ValidatorException` will be thrown containing the `javax.faces.application.FacesMessage` describing the failure. For a validator to be fully compliant with Version 2 and later of the specification, it must not fail validation on `null` or empty values unless it is specifically intended to address `null` or empty values. An application-wide `<context-param>` is provided to allow validators designed for JSF 1.2 to work with JSF 2 and later. The `javax.faces.VALIDATE_EMPTY_FIELDS` `<context-param>` must be set to `false` to enable this backwards compatibility behavior. Parameters context:FacesContext FacesContext for the request we are processing component:UIComponent UIComponent we are checking for correctness value:Object the value to validate Annotations @Override Exceptions ValidatorException: if validation fails NullPointerException: if `context` or `component` is `null`

public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException

Implements javax.faces.validator.Validator.validate.

Doc from javax.faces.validator.Validator.validate.

Perform the correctness checks implemented by this Validator against the specified UIComponent. If any violations are found, a ValidatorException will be thrown containing the javax.faces.application.FacesMessage describing the failure.

For a validator to be fully compliant with Version 2 and later of the specification, it must not fail validation on null or empty values unless it is specifically intended to address null or empty values. An application-wide <context-param> is provided to allow validators designed for JSF 1.2 to work with JSF 2 and later. The javax.faces.VALIDATE_EMPTY_FIELDS <context-param> must be set to false to enable this backwards compatibility behavior.

Parameters

context:FacesContext: FacesContext for the request we are processing
component:UIComponent: UIComponent we are checking for correctness
value:Object: the value to validate

Annotations

@Override

Exceptions

ValidatorException:: if validation fails
NullPointerException:: if context or component is null

validateEmptyFields	back to summary
private boolean validateEmptyFields(FacesContext ctx)

public Class MethodExpressionValidator

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail