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java.lang.Objectcom.vaadin.data.validator.NullValidator
public class NullValidator
This validator is used for validating properties that do or do not allow null values. By default, nulls are not allowed.
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from interface com.vaadin.data.Validator |
|---|
Validator.EmptyValueException, Validator.InvalidValueException |
| Constructor Summary | |
|---|---|
NullValidator(String errorMessage,
boolean onlyNullAllowed)
Creates a new NullValidator. |
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| Method Summary | |
|---|---|
String |
getErrorMessage()
Gets the error message that is displayed in case the value is invalid. |
boolean |
isNullAllowed()
Returns true if nulls are allowed otherwise
false. |
boolean |
isValid(Object value)
Tests if the given value is valid. |
void |
setErrorMessage(String errorMessage)
Sets the error message to be displayed on invalid value. |
void |
setNullAllowed(boolean onlyNullAllowed)
Sets if nulls (and only nulls) are to be allowed. |
void |
validate(Object value)
Validates the data given in value. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public NullValidator(String errorMessage,
boolean onlyNullAllowed)
errorMessage - the error message to display on invalidation.onlyNullAllowed - Are only nulls allowed?| Method Detail |
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public void validate(Object value)
throws Validator.InvalidValueException
validate in interface Validatorvalue - the value to validate.
Validator.InvalidValueException - if the value was invalid.public boolean isValid(Object value)
isValid in interface Validatorvalue - the value to validate.
true if the value is valid, false
otherwise.public final boolean isNullAllowed()
true if nulls are allowed otherwise
false.
public void setNullAllowed(boolean onlyNullAllowed)
onlyNullAllowed - If true, only nulls are allowed. If false only non-nulls are
allowed. Do we allow nulls?public String getErrorMessage()
public void setErrorMessage(String errorMessage)
errorMessage - the Error Message to set.
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