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## org.codehaus.groovy.grails.validation
Class BlankConstraint

    java.lang.Object
      org.codehaus.groovy.grails.validation.AbstractConstraint
          org.codehaus.groovy.grails.validation.AbstractVetoingConstraint
              org.codehaus.groovy.grails.validation.BlankConstraint

All Implemented Interfaces:
  Constraint, VetoingConstraint

     class BlankConstraint

extends AbstractVetoingConstraint

A Constraint that validates a string is not blank

Since:
  0.4

  Created: Jan 19, 2007 Time: 8:10:01 AM
Author:
  Graeme Rocher

Field Summary

Fields inherited from class org.codehaus.groovy.grails.validation.AbstractConstraint
`classShortName, constraintOwningClass, constraintParameter, constraintPropertyName, messageSource`

Constructor Summary
`BlankConstraint()`

Method Summary
`String` | `getName()`
`Object` | `getParameter()`
`protected boolean` | `processValidateWithVetoing(Object target, Object propertyValue, Errors errors)`
`void` | `setParameter(Object constraintParameter)` The parameter which the constraint is validated against
`boolean` | `supports(Class type)` Returns whether the constraint supports being applied against the specified type;

Methods inherited from class org.codehaus.groovy.grails.validation.AbstractVetoingConstraint
`processValidate, validateWithVetoing`

Methods inherited from class org.codehaus.groovy.grails.validation.AbstractConstraint
`checkState, getDefaultMessage, getPropertyName, rejectValue, rejectValue, rejectValue, rejectValue, rejectValue, rejectValueWithDefaultMessage, setMessageSource, setOwningClass, setPropertyName, skipNullValues, toString, validate`

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

Methods inherited from interface org.codehaus.groovy.grails.validation.Constraint
`getPropertyName, setMessageSource, setOwningClass, setPropertyName, validate`

Constructor Detail

### BlankConstraint

    BlankConstraint()

Method Detail

### supports

    public boolean supports(Class type)

  Description copied from interface: `Constraint`
  Returns whether the constraint supports being applied against the specified type;

  Parameters:
    `type` - The type to support
  Returns:
    True if the constraint can be applied against the specified type

### getParameter

    public Object getParameter()

### setParameter

    public void setParameter(Object constraintParameter)

  Description copied from interface: `Constraint`
  The parameter which the constraint is validated against

  Specified by:
    `setParameter` in interface `Constraint`
  Overrides:
    `setParameter` in class `AbstractConstraint`
  Parameters:
    `constraintParameter` - The constraintParameter to set.

### getName

    public String getName()

  Returns:
    The name of the constraint

### processValidateWithVetoing

    protected boolean processValidateWithVetoing(Object target,
                                                 Object propertyValue,
                                                 Errors errors)

  Specified by:
    `processValidateWithVetoing` in class `AbstractVetoingConstraint`

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