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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.

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package javax.faces.convert;


import javax.faces.component.StateHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;


/**
 * 

Converter is an * interface describing a Java class that can perform Object-to-String * and String-to-Object conversions between model data objects and a * String representation of those objects that is suitable for * rendering.

*

*

{@link Converter} implementations must have a zero-arguments public * constructor. In addition, if the {@link Converter} class wishes to have * configuration property values saved and restored with the component tree, * the implementation must also implement {@link StateHolder}.

*

*

Starting with version 1.2 of the specification, an exception to the above * zero-arguments constructor requirement has been introduced. If a converter has * a single argument constructor that takes a Class instance and * the Class of the data to be converted is * known at converter instantiation time, this constructor * must be used to instantiate the converter instead of the zero-argument * version. This enables the per-class conversion * of Java enumerated types.

*

*

If any Converter implementation requires a * java.util.Locale to perform its job, it must obtain that * Locale from the {@link javax.faces.component.UIViewRoot} * of the current {@link FacesContext}, unless the * Converter maintains its own Locale as part * of its state.

* *

If the class implementing * Converter has a {@link * javax.faces.application.ResourceDependency} annotation, the action * described in ResourceDependency must be taken when * {@link javax.faces.component.ValueHolder#setConverter} is called. * If the class implementing Converter has a {@link * javax.faces.application.ResourceDependencies} annotation, the * action described in ResourceDependencies must be taken * when {@link javax.faces.component.ValueHolder#setConverter} is called.

*/ public interface Converter { /** *

Convert the specified string value, which is associated with * the specified {@link UIComponent}, into a model data object that * is appropriate for being stored during the Apply Request * Values phase of the request processing lifecycle.

* * @param context {@link FacesContext} for the request being processed * @param component {@link UIComponent} with which this model object * value is associated * @param value String value to be converted (may be null) * @return null if the value to convert is null, * otherwise the result of the conversion * @throws ConverterException if conversion cannot be successfully * performed * @throws NullPointerException if context or * component is null */ public Object getAsObject(FacesContext context, UIComponent component, String value); /** *

Convert the specified model object value, which is associated with * the specified {@link UIComponent}, into a String that is suitable * for being included in the response generated during the * Render Response phase of the request processing * lifeycle.

* * @param context {@link FacesContext} for the request being processed * @param component {@link UIComponent} with which this model object * value is associated * @param value Model object value to be converted * (may be null) * @return a zero-length String if value is null, * otherwise the result of the conversion * @throws ConverterException if conversion cannot be successfully * performed * @throws NullPointerException if context or * component is null */ public String getAsString(FacesContext context, UIComponent component, Object value); /** *

* If this param is set, and calling toLowerCase().equals("true") on a * String representation of its value returns true, * Application.createConverter() must guarantee that the default for the * timezone of all javax.faces.convert.DateTimeConverter instances must * be equal to TimeZone.getDefault() instead of "GMT". *

* * @since 2.0 */ public static final String DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE_PARAM_NAME = "javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE"; }




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