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package com.sun.faces.cdi;
import javax.faces.component.StateHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
/**
* A delegate to the CDI managed converter.
*/
public class CdiConverter implements Converter, StateHolder {
/**
* Stores the converter-id (if any).
*/
private String converterId;
/**
* Stores a transient reference to the CDI managed converter.
*/
private transient Converter delegate;
/**
* Stores the for-class (if any).
*/
private Class forClass;
/**
* Constructor.
*/
public CdiConverter() {
}
/**
* Constructor.
*
* @param converterId the converter id.
* @param forClass the for class.
* @param delegate the delegate.
*/
public CdiConverter(String converterId, Class forClass, Converter delegate) {
this.converterId = converterId;
this.forClass = forClass;
this.delegate = delegate;
}
/**
* Get the object.
*
* @param facesContext the Faces context.
* @param component the UI component.
* @param value the value.
* @return the object.
*/
@Override
public Object getAsObject(FacesContext facesContext, UIComponent component, String value) {
return getDelegate(facesContext).getAsObject(facesContext, component, value);
}
/**
* Get the string representation.
*
* @param facesContext the Faces context.
* @param component the UI component.
* @param value the value.
* @return the string.
*/
@Override
public String getAsString(FacesContext facesContext, UIComponent component, Object value) {
return getDelegate(facesContext).getAsString(facesContext, component, value);
}
/**
* Save the state.
*
* @param facesContext the Faces context.
* @return the saved object.
*/
@Override
public Object saveState(FacesContext facesContext) {
return new Object[] {
converterId,
forClass
};
}
/**
* Restore the state.
*
* @param facesContext the Faces context.
* @param state the state.
*/
@Override
public void restoreState(FacesContext facesContext, Object state) {
Object[] stateArray = (Object[]) state;
converterId = (String) stateArray[0];
forClass = (Class) stateArray[1];
}
/**
* Is the converter transient.
*
* @return false
*/
@Override
public boolean isTransient() {
return false;
}
/**
* Set the converter to transient.
*
* <p>
* We ignore the call as our proxy is always non-transient.
* </p>
*
* @param transientValue
*/
@Override
public void setTransient(boolean transientValue) {
}
/**
* Get the delegate.
*
* @param facesContext the Faces context.
* @return the delegate.
*/
private Converter getDelegate(FacesContext facesContext) {
if (delegate == null) {
if (!converterId.equals("")) {
delegate = facesContext.getApplication().createConverter(converterId);
} else {
delegate = facesContext.getApplication().createConverter(forClass);
}
}
return delegate;
}
}