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JSR303 Validation

There is a newer version: 6.30.0

package org.wicketstuff.jsr303;

import javax.validation.ConstraintViolation;

import org.apache.wicket.validation.ValidationError;
import org.wicketstuff.jsr303.util.Assert;

abstract class ViolationErrorBuilder
{
	static class Property extends ViolationErrorBuilder
	{
		public Property(final ConstraintViolation violation)
		{
			super(violation);
		}

		@Override
		protected String render()
		{
			return JSR303Validation.getViolationMessageRenderer()
				.renderPropertyViolation(violation);
		}
	}
	static class Bean extends ViolationErrorBuilder
	{

		public Bean(final ConstraintViolation violation)
		{
			super(violation);
		}

		@Override
		protected String render()
		{
			return JSR303Validation.getViolationMessageRenderer().renderBeanViolation(violation);
		}
	}

	protected final ConstraintViolation violation;

	ViolationErrorBuilder(final ConstraintViolation violation)
	{
		Assert.parameterNotNull(violation, "violation");
		this.violation = violation;
	}

	ValidationError createError()
	{
		final ValidationError ve = new ValidationError();
		ve.setMessage(render());
		final String messageTemplate = violation.getMessageTemplate();
		final String key = extractKey(messageTemplate);
		if (key != null)
		{
			ve.addMessageKey(key);
		}
		return ve;
	}

	protected abstract String render();

	private static String extractKey(final String messageTemplate)
	{
		Assert.parameterNotNull(messageTemplate, "messageTemplate");
		final String key = messageTemplate.trim();
		if (key.startsWith("{") && key.endsWith("}"))
		{
			return key.substring(1, key.length() - 1);
		}
		else
		{
			return null;
		}
	}
}