Module org.omnifaces

Package org.omnifaces.converter

Class ToCollectionConverter

java.lang.Object

org.omnifaces.converter.ToCollectionConverter

All Implemented Interfaces:

Converter<Collection>

public class ToCollectionConverter
extends Object
implements Converter<Collection>

The omnifaces.ToCollectionConverter is intented to convert submitted String values to a Java collection based on a delimiter. Additionally, it trims any whitespace around each delimited submitted value. This is useful for among others comma separated value inputs.

Usage

This converter is available by converter ID omnifaces.ToCollectionConverter. Just specify it in the converter attribute of the component referring the Collection property. For example:

 <h:inputText value="#{bean.commaSeparatedValues}" converter="omnifaces.ToCollectionConverter" />
 

Since OmniFaces 4.5 it's also available by <o:toCollectionConverter> tag.

 <h:inputText value="#{bean.commaSeparatedValues}">
     <o:toCollectionConverter />
 </h:inputText>
 

The default delimiter is comma followed by space , and the default collection type is java.util.LinkedHashSet for a Set property and java.util.ArrayList for anything else, and the default converter for each item will in getAsString() be determined based on item type and in getAsObject() be determined based on generic return type of the getter method.

The delimiter must be a String, the collectionType must be a FQN and the itemConverter can be anything which is acceptable by Faces.createConverter(Object).

 <h:inputText value="#{bean.uniqueOrderedSemiColonSeparatedNumbers}">
     <o:toCollectionConverter delimiter=";"
                                 collectionType="java.util.TreeSet"
                                 itemConverter="jakarta.faces.Integer" />
 </h:inputText>
 

Since:

2.6

Author:

Bauke Scholtz

See Also:

• TrimConverter

Field Summary

Fields inherited from interface jakarta.faces.convert.Converter

DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE_PARAM_NAME

Constructor Summary

Constructors

Constructor	Description
ToCollectionConverter()

Method Summary

Modifier and Type	Method	Description
Collection	getAsObject(FacesContext context, UIComponent component, String submittedValue)
String	getAsString(FacesContext context, UIComponent component, Collection modelValue)
void	setCollectionType(String collectionType)	Sets the FQN of the collection to create.
void	setDelimiter(String delimiter)	Sets the delimiter to split on.
void	setItemConverter(Object itemConverter)	Sets the converter for the item.

Methods inherited from class java.lang.Object

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

Constructor Details

ToCollectionConverter

public ToCollectionConverter()

Method Details

getAsObject

public Collection getAsObject(FacesContext context,
 UIComponent component,
 String submittedValue)

Specified by:

getAsObject in interface Converter<Collection>

getAsString

public String getAsString(FacesContext context,
 UIComponent component,
 Collection modelValue)

Specified by:

getAsString in interface Converter<Collection>

setDelimiter

public void setDelimiter(String delimiter)

Sets the delimiter to split on.

Parameters:

delimiter - The delimiter to split on.

setCollectionType

public void setCollectionType(String collectionType)

Sets the FQN of the collection to create.

Parameters:

collectionType - The FQN of the collection to create.

setItemConverter

public void setItemConverter(Object itemConverter)

Sets the converter for the item.

Parameters:

itemConverter - The converter for the item.