Package org.teiid.rhq.plugin.adapter.impl

Source Code of org.teiid.rhq.plugin.adapter.impl.PropertyMapToPropertiesValueAdapter

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* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.  Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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*/
package org.teiid.rhq.plugin.adapter.impl;

import java.util.HashSet;
import java.util.Set;

import org.jboss.metatype.api.types.MetaType;
import org.jboss.metatype.api.values.MetaValue;
import org.jboss.metatype.api.values.PropertiesMetaValue;
import org.rhq.core.domain.configuration.Property;
import org.rhq.core.domain.configuration.PropertyMap;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.core.domain.configuration.definition.PropertyDefinitionMap;
import org.teiid.rhq.plugin.adapter.api.AbstractPropertyMapAdapter;
import org.teiid.rhq.plugin.adapter.api.PropertyAdapter;

/**
* This class provides code that maps back and forth between a {@link PropertyMap} and a {@link PropertiesMetaValue}. A
* <code>PropertiesMetaValue</code> extends java.util.Properties. Its associated PropertiesMetaType may or may not
* define member property names; since the RHQ Configuration system assumes a PropertyDefinitionMap either defines none
* of its member properties (i.e. an "open map") or defines all of them, we just ignore the PropertiesMetaType and
* always map to an open map.
*
*/
public class PropertyMapToPropertiesValueAdapter extends AbstractPropertyMapAdapter
        implements PropertyAdapter<PropertyMap, PropertyDefinitionMap>
{
    public void populateMetaValueFromProperty(PropertyMap propMap, MetaValue metaValue, PropertyDefinitionMap propDefMap)
    {
        PropertiesMetaValue propertiesValue = (PropertiesMetaValue)metaValue;
        for (String mapMemberPropName : propMap.getMap().keySet())
        {
            Property mapMemberProp = propMap.get(mapMemberPropName);
            propertiesValue.setProperty(mapMemberProp.getName(), ((PropertySimple)mapMemberProp).getStringValue());
        }
    }

    public MetaValue convertToMetaValue(PropertyMap propMap, PropertyDefinitionMap propDefMap, MetaType metaType)
    {
        PropertiesMetaValue propertiesValue = new PropertiesMetaValue();
        populateMetaValueFromProperty(propMap, propertiesValue, propDefMap);
        return propertiesValue;
    }

    public void populatePropertyFromMetaValue(PropertyMap propMap, MetaValue metaValue, PropertyDefinitionMap propDefMap)
    {
        if (metaValue == null)
            return;
        PropertiesMetaValue propertiesValue = (PropertiesMetaValue)metaValue;
        Set<String> mapMemberPropNames = new HashSet();
        for (Object key : propertiesValue.keySet())
            mapMemberPropNames.add((String)key);
        // There won't be any keys when loading a Configuration for the first time.
        for (String mapMemberPropName : mapMemberPropNames)
        {
            // We assume the PropertyMap is an "open map", since that's what PropertiesMetaValue maps to.
            PropertySimple mapMemberProp = propMap.getSimple(mapMemberPropName);
            // Create a PropertySimple and populate it.
            if (mapMemberProp == null)
            {
                mapMemberProp = new PropertySimple(mapMemberPropName, propertiesValue.getProperty(mapMemberPropName));
                propMap.put(mapMemberProp);
            }
        }
    }
}
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