de.smartics.properties.tutorial.property.constraints
Class PropertyConstraintsWithGroupsTutorial

java.lang.Object
  de.smartics.properties.tutorial.property.constraints.PropertyConstraintsWithGroupsTutorial

@Document(title="Property Constraints With Groups",
          sortKey="basics0060")
@DocCategory(value="basics")
public class PropertyConstraintsWithGroupsTutorial
     
     

      
      extends 
      
      Object
     
     

This tutorial introduces how to add constraints to the property declaration.

This feature takes the burden of validation from the developers shoulders. It is based on Beans Validation (JSR-303), so any constraint defined with this technology can be used for validating properties.

Constructor Summary

PropertyConstraintsWithGroupsTutorial()

Method Summary

void	calledWithUnknownGroup() If there are no constraints in the given group, every value is valid.
void	declaredDefaultGroup() Having no group or explicitly set the constraint in a default group has the same effect.
void	declaredDefaultGroupExplictCallWithDefaultGroup() And it is also the same if you call the validation using the default group.
void	invalidInStartupGroup() Let's have a look at some examples that use groups to activate and deactivate constraints for a particular validation.
void	setUp()

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyConstraintsWithGroupsTutorial

public PropertyConstraintsWithGroupsTutorial()

Method Detail

setUp

public void setUp()

invalidInStartupGroup

@DocSection
public void invalidInStartupGroup()

Let's have a look at some examples that use groups to activate and deactivate constraints for a particular validation.

In the following example the value 11 is correct in the default group, but not in the startup group.

declaredDefaultGroup

@DocSection
public void declaredDefaultGroup()

Having no group or explicitly set the constraint in a default group has the same effect.

declaredDefaultGroupExplictCallWithDefaultGroup

@DocSection
public void declaredDefaultGroupExplictCallWithDefaultGroup()

And it is also the same if you call the validation using the default group.

calledWithUnknownGroup

@DocSection
public void calledWithUnknownGroup()

If there are no constraints in the given group, every value is valid.