Converter (ZK Bind 10.3.0.FL.20260108 API)

All Known Implementing Classes:

AbstractListModelConverter, AbstractSelectedIndexConverter, ChildrenBindingConverter, ComboboxModelConverter, ComboboxSelectedIndexConverter, ComboboxSelectedItemConverter, DefaultJSONBindingParamConverter, ErrorMessageConverter, FormatedDateConverter, FormatedNumberConverter, FormattedTemporalConverter, FormattedTimeConverter, GridModelConverter, ImageContentConverter, ListboxModelConverter, ListboxSelectedIndexConverter, ListboxSelectedItemConverter, ListboxSelectedItemsConverter, ObjectBooleanConverter, RadiogroupModelConverter, RadiogroupSelectedIndexConverter, RadiogroupSelectedItemConverter, SelectboxModelConverter, SelectboxSelectedIndexConverter, SelectboxSelectedItemConverter, TabboxModelConverter, TabboxSelectedIndexConverter, TabboxSelectedTabConverter, TreeModelConverter, TreeSelectedItemConverter, TreeSelectedItemsConverter, UriConverter
```
public interface Converter<U,B,C extends org.zkoss.zk.ui.Component>
```
Generic binding conversion interface. U is the value type of the Component attribute, B is the property type of the Bean and C is the component type of the converter.

Since:

6.0.0

Author:

henrichen, dennis

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.Object`	`IGNORED_VALUE`	Indicates the returned value should be ignored to load to a component or save to a bean, It is useful for writing a converter to manipulate component directly when loading or saving Note : If you want to return `IGNORED_VALUE` in the converter method, then you need to set U or B to Object.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`B`	`coerceToBean(U compAttr, C component, BindContext ctx)`	Coerces a value to bean value to save to a bean
`U`	`coerceToUi(B beanProp, C component, BindContext ctx)`	Coerces a value to another value to load to a component

- Field Detail
  - IGNORED_VALUE
```
static final java.lang.Object IGNORED_VALUE
```
    Indicates the returned value should be ignored to load to a component or save to a bean, It is useful for writing a converter to manipulate component directly when loading or saving Note :
    If you want to return IGNORED_VALUE in the converter method, then you need to set U or B to Object.
    
    Since:
    
    6.0.1
- Method Detail
  - coerceToUi
```
U coerceToUi(B beanProp,
             C component,
             BindContext ctx)
```
    Coerces a value to another value to load to a component
    
    Parameters:
    
    beanProp - the bean value
    
    component - the component to be loaded the value
    
    ctx - the bind context
    
    Returns:
    
    the value to load to a component
  - coerceToBean
```
B coerceToBean(U compAttr,
               C component,
               BindContext ctx)
```
    Coerces a value to bean value to save to a bean
    
    Parameters:
    
    compAttr - the value of component attribute.
    
    component - the component provides the value
    
    ctx - the bind context
    
    Returns:
    
    the value to save to a bean