org.apache.wicket.markup.DefaultMarkupCacheKeyProvider Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of org.ops4j.pax.wicket.service Show documentation

Pax Wicket Service is an OSGi extension of the Wicket framework, allowing for dynamic loading and unloading of Wicket components and pageSources.

There is a newer version: 5.0.0

Show newest version

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.markup;

import java.util.Locale;

import org.apache.wicket.MarkupContainer;


/**
 * Wicket default implementation for the cache key used to reference the cached markup resource
 * stream.
 * 
 * @author Jonathan Locke
 * @author Juergen Donnerstag
 */
public class DefaultMarkupCacheKeyProvider implements IMarkupCacheKeyProvider
{
	/**
	 * Constructor.
	 */
	public DefaultMarkupCacheKeyProvider()
	{
	}

	/**
	 * Construct a proper key value for the cache
	 * 
	 * @param container
	 *            The container requesting the markup
	 * @param clazz
	 *            The clazz to get the key for
	 * @return Key that uniquely identifies any markup that might be associated with this markup
	 *         container.
	 */
	public String getCacheKey(final MarkupContainer container, final Class clazz)
	{
		final String classname = clazz.getName();
		final StringBuilder buffer = new StringBuilder(classname.length() + 64);
		buffer.append(classname);

		if (container.getVariation() != null)
		{
			buffer.append('_').append(container.getVariation());
		}

		if (container.getStyle() != null)
		{
			buffer.append('_').append(container.getStyle());
		}

		final Locale locale = container.getLocale();
		if (locale != null)
		{
			buffer.append('_').append(locale.getLanguage());

			final boolean hasLocale = locale.getLanguage().length() != 0;
			final boolean hasCountry = locale.getCountry().length() != 0;
			final boolean hasVariant = locale.getVariant().length() != 0;

			if (hasCountry || (hasLocale && hasVariant))
			{
				buffer.append('_').append(locale.getCountry());
			}
			if (hasVariant && (hasLocale || hasCountry))
			{
				buffer.append('_').append(locale.getVariant());
			}
		}

		buffer.append('.').append(container.getMarkupType().getExtension());
		return buffer.toString();
	}
}