/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.beans.metadata.plugins;
import java.util.HashSet;
import java.util.Set;
import javax.xml.bind.annotation.XmlAttribute;
import org.jboss.beans.metadata.api.model.QualifierContent;
import org.jboss.kernel.spi.qualifier.QualifierMatchers;
import org.jboss.kernel.spi.qualifier.QualifierParser;
/**
* Abstract Qualifier MetaData. Qualifiers are used to narrow down what is injected
* when doing contextul injection (by bean type)
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
* @version $Revision: 1.1 $
*/
public abstract class AbstractQualifierMetaData extends AbstractRelatedClassMetaData
{
private static final long serialVersionUID = 1L;
private volatile QualifierContent content = QualifierContent.STRING;
private volatile Set<Object> parsedQualifiers;
public AbstractQualifierMetaData()
{
}
@Override
@XmlAttribute(name="name")
public void setClassName(String classname)
{
throw new IllegalStateException("Class name can not be set for qualifiers");
}
protected void internalSetClassName(String classname)
{
super.setClassName(classname);
}
/**
* Get how the qualifier content should be parsed. The default is STRING
*
* @return the content
*/
public QualifierContent getContent()
{
return content;
}
/**
* Set how the qualifier content should be parsed. If not set, the default is STRING
*
* @param content the content to set
*/
@XmlAttribute(name="content")
public void setContent(QualifierContent content)
{
this.content = content;
}
@Override
public Set<Object> getEnabled()
{
return getEnabled((ClassLoader)null);
}
public Set<Object> getEnabled(ClassLoader cl)
{
Set<Object> enableds = super.getEnabled();
if (enableds == null || enableds.size() == 0)
return enableds;
QualifierParser parser = QualifierMatchers.getInstance().getParser(content);
if (parsedQualifiers == null)
{
Set<Object> qualifiers = new HashSet<Object>();
for(Object enabled : enableds)
{
qualifiers.add(parse(cl, parser, enabled));
}
parsedQualifiers = qualifiers;
}
return parsedQualifiers;
}
protected abstract Object parse(ClassLoader cl, QualifierParser parser, Object enabled);
}