PropertyAdapterFactory.java

/*
* Jopr Management Platform
* Copyright (C) 2005-2009 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* This program 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 General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.plugins.jbossas5.adapter.api;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jetbrains.annotations.Nullable;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyListToArrayValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyListToCollectionValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyMapToCompositeValueSupportAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyMapToGenericValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyMapToMapCompositeValueSupportAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyMapToPropertiesValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertyMapToTableValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertySimpleToEnumValueAdapter;
import org.rhq.plugins.jbossas5.adapter.impl.configuration.PropertySimpleToSimpleValueAdapter;

import org.jboss.metatype.api.types.MapCompositeMetaType;
import org.jboss.metatype.api.types.MetaType;
import org.jboss.metatype.api.types.PropertiesMetaType;
import org.jboss.metatype.api.values.MetaValue;

/**
 * @author Mark Spritzler
 */
public class PropertyAdapterFactory
{
    private static final Log LOG = LogFactory.getLog(PropertyAdapterFactory.class);

    public static PropertyAdapter getPropertyAdapter(MetaValue metaValue)
    {
        if (metaValue == null)
        {
            LOG.debug("The MetaValue passed in is null.");
            return null;
        }
        MetaType metaType = metaValue.getMetaType();
        return getPropertyAdapter(metaType);
    }

    public static PropertyAdapter getPropertyAdapter(MetaType metaType)
    {
        PropertyAdapter propertyAdapter = null;
        if (metaType.isSimple())
        {
            propertyAdapter = new PropertySimpleToSimpleValueAdapter();
        }
        else if (metaType.isGeneric())
        {
            propertyAdapter = new PropertyMapToGenericValueAdapter();
        }
        else if (metaType.isComposite())
        {
            if (metaType instanceof MapCompositeMetaType)
                propertyAdapter = new PropertyMapToMapCompositeValueSupportAdapter();
            else
                propertyAdapter = new PropertyMapToCompositeValueSupportAdapter();
        }
        else if (metaType.isTable())
        {
            propertyAdapter = new PropertyMapToTableValueAdapter();
        }
        else if (metaType.isCollection())
        {
            propertyAdapter = new PropertyListToCollectionValueAdapter();
        }
        else if (metaType.isArray())
        {
            propertyAdapter = new PropertyListToArrayValueAdapter();
        }
        else if (metaType.isEnum())
        {
            propertyAdapter = new PropertySimpleToEnumValueAdapter();
        }
        else if (metaType instanceof PropertiesMetaType)
        {
            propertyAdapter = new PropertyMapToPropertiesValueAdapter();
        }
        else
        {
            LOG.warn("Unsupported MetaType: " + metaType);
        }
        return propertyAdapter;
    }

    @Nullable
    public static PropertyAdapter getCustomPropertyAdapter(PropertySimple customProp)
    {
        if (customProp == null)
            return null;
        String adapterClassName = customProp.getStringValue();
        PropertyAdapter propertyAdapter = null;
        try
        {
            Class adapterClass = Class.forName(adapterClassName);
            propertyAdapter = (PropertyAdapter)adapterClass.newInstance();
        }
        catch (Exception e)
        {
            LOG.error("Unable to create custom adapter class for " + customProp + ".", e);
        }
        return propertyAdapter;
    }
}