PropertyListToCollectionValueAdapter.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.impl.configuration;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.domain.configuration.Property;
import org.rhq.core.domain.configuration.PropertyList;
import org.rhq.core.domain.configuration.definition.PropertyDefinition;
import org.rhq.core.domain.configuration.definition.PropertyDefinitionList;
import org.rhq.plugins.jbossas5.adapter.api.AbstractPropertyListAdapter;
import org.rhq.plugins.jbossas5.adapter.api.PropertyAdapter;
import org.rhq.plugins.jbossas5.adapter.api.PropertyAdapterFactory;

import org.jboss.metatype.api.types.CollectionMetaType;
import org.jboss.metatype.api.types.MetaType;
import org.jboss.metatype.api.values.CollectionValue;
import org.jboss.metatype.api.values.CollectionValueSupport;
import org.jboss.metatype.api.values.MetaValue;

/**
 * @author Mark Spritzler
 * @author Ian Springer
 */
public class PropertyListToCollectionValueAdapter extends AbstractPropertyListAdapter implements PropertyAdapter<PropertyList, PropertyDefinitionList>
{
    private static final Log LOG = LogFactory.getLog(PropertyListToCollectionValueAdapter.class);

    public void populateMetaValueFromProperty(PropertyList property, MetaValue metaValue, PropertyDefinitionList propertyDefinition)
    {
        PropertyDefinition listMemberPropDef = propertyDefinition.getMemberDefinition();
        List<Property> listMemberProps = property.getList();
        CollectionValueSupport collectionValue = (CollectionValueSupport)metaValue;
        MetaType listMemberMetaType = collectionValue.getMetaType().getElementType();
        MetaValue[] listMemberValues = new MetaValue[listMemberProps.size()];
        PropertyAdapter propertyAdapter = PropertyAdapterFactory.getPropertyAdapter(listMemberMetaType);
        int memberIndex = 0;
        for (Property listMemberProp : listMemberProps)
        {
            MetaValue listMemberValue = propertyAdapter.convertToMetaValue(listMemberProp, listMemberPropDef, listMemberMetaType);
            listMemberValues[memberIndex++] = listMemberValue;
        }
        // Replace the existing elements with the new ones.
        collectionValue.setElements(listMemberValues);
    }

    public MetaValue convertToMetaValue(PropertyList propertyList, PropertyDefinitionList propertyListDefinition, MetaType metaType)
    {
        LOG.debug("GetMetaValue for property: " + propertyList.getName() + " values: " + propertyList.getList().toString());
        CollectionMetaType collectionMetaType = (CollectionMetaType)metaType;
        MetaType memberMetaType = collectionMetaType.getElementType();
        CollectionMetaType collectionType = new CollectionMetaType(propertyListDefinition.getName(), memberMetaType);
        CollectionValue collectionValue = new CollectionValueSupport(collectionType);
        populateMetaValueFromProperty(propertyList, collectionValue, propertyListDefinition);
        return collectionValue;
    }

    public void populatePropertyFromMetaValue(PropertyList propList, MetaValue metaValue, PropertyDefinitionList propDefList)
    {
        PropertyDefinition memberPropDef = propDefList.getMemberDefinition();
        if (propList != null)
        {
            // Since we want to load the PropertyList with fresh values, we want it cleared out.
            propList.getList().clear();
            if (metaValue != null)
            {
                CollectionValue collectionValue = (CollectionValue)metaValue;
                MetaType listMemberMetaType = collectionValue.getMetaType().getElementType();
                MetaValue[] listMemberValues = collectionValue.getElements();
                PropertyAdapter propertyAdapter = PropertyAdapterFactory.getPropertyAdapter(listMemberMetaType);
                for (MetaValue listMemberValue : listMemberValues)
                {
                    Property listMemberProp = propertyAdapter.convertToProperty(listMemberValue, memberPropDef);
                    propList.add(listMemberProp);
                }
            }
        }
    }
}