org.apache.cocoon.forms.formmodel
Class CalculatedFieldDefinitionBuilder

java.lang.Object
  org.apache.cocoon.forms.formmodel.AbstractWidgetDefinitionBuilder
      org.apache.cocoon.forms.formmodel.AbstractDatatypeWidgetDefinitionBuilder
          org.apache.cocoon.forms.formmodel.FieldDefinitionBuilder
              org.apache.cocoon.forms.formmodel.CalculatedFieldDefinitionBuilder

All Implemented Interfaces:

Disposable, Serviceable, WidgetDefinitionBuilder

public class CalculatedFieldDefinitionBuilder
extends FieldDefinitionBuilder

Builder for CalculatedFields.

A common calculated field definition is as follows :

<fd:calculatedfield id="id" [state="{invisible|output|disabled|active}"]> <fd:datatype base="...">...</fd:datatype> <fd:label>...</fd:label> <fd:value type="...">...</fd:algorithm> </fd:calculatedfield>

Since it inherits from Field, other attributes and elements may be specified, like listeners (on-value-changed, on-create etc..) or selection lists (which could make sense if the algorithm calculates one value between many possibilities).

Note that the default state is active, althought typing in a calculated field is useless. The state invisible can be used to create fields which are used as temporary value placeholders in a chain of calculations.

Version:

$Id: CalculatedFieldDefinitionBuilder.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Field Summary

Fields inherited from class org.apache.cocoon.forms.formmodel.AbstractWidgetDefinitionBuilder

datatypeManager, expressionManager, serviceManager, widgetDefinitionBuilderSelector, widgetListenerBuilderSelector, widgetValidatorBuilderSelector

Constructor Summary

CalculatedFieldDefinitionBuilder()

Method Summary

WidgetDefinition	buildWidgetDefinition(Element widgetElement, WidgetDefinitionBuilderContext context)
protected void	setupDefinition(Element widgetElement, CalculatedFieldDefinition definition, WidgetDefinitionBuilderContext context)

Methods inherited from class org.apache.cocoon.forms.formmodel.FieldDefinitionBuilder

setupDefinition

Methods inherited from class org.apache.cocoon.forms.formmodel.AbstractDatatypeWidgetDefinitionBuilder

buildSelectionList, setupDefinition, setupDefinition

Methods inherited from class org.apache.cocoon.forms.formmodel.AbstractWidgetDefinitionBuilder

buildAnotherWidgetDefinition, buildEventListeners, buildWidgetDefinition, dispose, service, setCommonProperties, setCreateListeners, setDisplayData, setupDefinition, setValidators

Methods inherited from class java.lang.Object

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

Constructor Detail

CalculatedFieldDefinitionBuilder

public CalculatedFieldDefinitionBuilder()

Method Detail

buildWidgetDefinition

public WidgetDefinition buildWidgetDefinition(Element widgetElement,
                                              WidgetDefinitionBuilderContext context)
                                       throws Exception

Specified by:

buildWidgetDefinition in interface WidgetDefinitionBuilder

Overrides:

buildWidgetDefinition in class FieldDefinitionBuilder

Throws:

Exception

setupDefinition

protected void setupDefinition(Element widgetElement,
                               CalculatedFieldDefinition definition,
                               WidgetDefinitionBuilderContext context)
                        throws Exception

Throws:

Exception