org.wicketstuff.jsr303.JSR303Validation Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of wicketstuff-jsr303 Show documentation
JSR303 Validation
There is a newer version: 6.30.0
/**
 * 
 */
package org.wicketstuff.jsr303;

import java.util.Locale;

import javax.validation.Configuration;
import javax.validation.MessageInterpolator;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;

import org.apache.wicket.Application;
import org.apache.wicket.MetaDataKey;
import org.apache.wicket.Session;
import org.wicketstuff.jsr303.util.Assert;

public class JSR303Validation
{
	public static class WicketSessionLocaleMessageInterpolator implements MessageInterpolator
	{
		private final MessageInterpolator delegate;

		public WicketSessionLocaleMessageInterpolator(final MessageInterpolator delegate)
		{
			this.delegate = delegate;
			Assert.parameterNotNull(delegate, "delegate");
		}

		public String interpolate(final String message, final Context context)
		{
			return delegate.interpolate(message, context, Session.get().getLocale());
		}

		public String interpolate(final String message, final Context context, final Locale locale)
		{
			return delegate.interpolate(message, context, Session.get().getLocale());
		}
	}

	private synchronized ValidatorFactory createFactory()
	{

		final Configuration configuration = Validation.byDefaultProvider().configure();
		// FIXME seems like needed for hib-val 4.0.2.? strange enough it does
		// not respect the locale passed on interpolate call. Working on it.

		// geez. they screwed it up.
		// http://opensource.atlassian.com/projects/hibernate/browse/HV-306
		// fixed in 4.1.0.beta2 ... Locale.setDefault(Session.get().getLocale());

		final ValidatorFactory validationFactory = configuration.messageInterpolator(
			new WicketSessionLocaleMessageInterpolator(
				configuration.getDefaultMessageInterpolator())).buildValidatorFactory();

		return validationFactory;
	}

	private static final JSR303Validation INSTANCE = new JSR303Validation();
	private static final MetaDataKey violationMessageRendererKey = new MetaDataKey()
	{
		private static final long serialVersionUID = 1L;
	};

	public static final JSR303Validation getInstance()
	{
		return INSTANCE;
	}

	public static Validator getValidator()
	{
		return getInstance().createFactory().getValidator();
	}

	private JSR303Validation()
	{
	}

	synchronized static ViolationMessageRenderer getViolationMessageRenderer()
	{
		final Application app = Application.get();
		ViolationMessageRenderer renderer = app.getMetaData(violationMessageRendererKey);
		if (renderer == null)
		{
			renderer = new ViolationMessageRenderer.Default();
			setViolationMessageRenderer(renderer);
		}
		return renderer;
	}

	public synchronized static void setViolationMessageRenderer(
		final ViolationMessageRenderer renderer)
	{
		Assert.parameterNotNull(renderer, "renderer");
		final Application app = Application.get();
		app.setMetaData(violationMessageRendererKey, renderer);
	}

}