com.sun.faces.application.ConverterPropertyEditorBase Maven / Gradle / Ivy
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package com.sun.faces.application;
import java.beans.PropertyEditorSupport;
/**
* Abstract base for a {@link java.beans.PropertyEditor} that delegates to a
* faces Converter that was registered by-type in a faces-config descriptor.
* Concrete implementations (such as generated by {@link
* ConverterPropertyEditorFactory}) will override {@link #getTargetClass}. (This
* is based on the original ConverterPropertyEditor code).
*/
public abstract class ConverterPropertyEditorBase
extends PropertyEditorSupport {
/**
* Return the target class of the objects that are being edited. This is used
* as a key to find the appropriate {@link javax.faces.convert.Converter} from
* the Faces application.
*
* @return the target class.
*/
protected abstract Class getTargetClass();
/**
* Convert the textValue to an object of type {@link
* #getTargetClass} by delegating to a converter in the faces Application.
*/
@Override
public void setAsText(String textValue) throws IllegalArgumentException {
try {
Object appAssociate = getPropertyEditorHelper();
// Get targetClass for the current ClassLoader
Class targetClass = Thread.currentThread()
.getContextClassLoader()
.loadClass(getTargetClass().getName());
Object value = appAssociate.getClass()
.getMethod("convertToObject", Class.class, String.class)
.invoke(
appAssociate, targetClass, textValue);
if (value != null) {
setValue(value);
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new IllegalStateException(
"Unexpected Error attempting to use this ConverterPropertyEditor. You're deployment environment may not support"
+ "ConverterPropertyEditors. Try restarting your server or disabling "
+ "com.sun.faces.registerConverterPropertyEditors", e);
}
}
private Object getPropertyEditorHelper() throws Exception {
// Load the current
Class facesContextClass =
Thread.currentThread().getContextClassLoader().loadClass(
"com.sun.faces.application.ApplicationAssociate");
// get the current context version of this class in case
Object appAssociate =
facesContextClass.getMethod("getCurrentInstance").invoke(null);
if (appAssociate == null) {
throw new IllegalStateException(
"Unable to find Deployed JSF Application. You're deployment environment may not support"
+ "ConverterPropertyEditors. Try restarting your server or turn off "
+ "com.sun.faces.registerConverterPropertyEditors");
}
Object propertyEditorHelper = appAssociate.getClass()
.getMethod("getPropertyEditorHelper").invoke(appAssociate);
return propertyEditorHelper;
}
/**
* Convert an object of type {@link #getTargetClass} to text by delegating to a
* converter obtained from the Faces Application.
*/
@Override
public String getAsText() {
try {
Object application = getPropertyEditorHelper();
Class targetClass = Thread.currentThread()
.getContextClassLoader()
.loadClass(getTargetClass().getName());
String text = (String) application.getClass()
.getMethod("convertToString", Class.class, Object.class)
.invoke(application, targetClass, getValue());
if (text != null) {
return text;
} else {
return super.getAsText();
}
} catch (Exception e) {
return super.getAsText();
}
}
}