MetaTypeUtils.java

/*
 * RHQ 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 as published by
 * the Free Software Foundation version 2 of the License.
 *
 * 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.rhq.plugins.jbossas5.util;

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

/**
 * @author Mark Spritzler
 * @author Ian Springer
 */
public class MetaTypeUtils
{
    /**
     * Checks if the specified MetaValue is an instance of the specified MetaType.
     *
     * @param metaValue a MetaValue
     * @param metaType a MetaType
     *
     * @return true if the MetaValue is an instance of the MetaType, or false if not
     */
    public static boolean instanceOf(MetaValue metaValue, MetaType metaType) {
        MetaType valueType = metaValue.getMetaType();
        if (valueType.isSimple() && metaType.isSimple())
            return true;
        else if (valueType.isEnum() && metaType.isEnum())
            return true;
        else if (valueType.isCollection() && metaType.isCollection())
            return true;
        else if (valueType.isArray() && metaType.isArray())
            return true;
        else if (valueType.isComposite() && metaType.isComposite()) {
            return (valueType instanceof MapCompositeMetaType && metaType instanceof MapCompositeMetaType) ||
                   (!(valueType instanceof CompositeMetaType) && !(metaType instanceof CompositeMetaType));
        } else if (valueType.isGeneric() && metaType.isGeneric())
            return true;
        else if (valueType.isTable() && metaType.isTable())
            return true;
        else if (valueType.isProperties() && metaType.isProperties())
            return true;
        else
            return false;
    }

    public static boolean isNumeric(SimpleMetaType simpleMetaType) {
        return (simpleMetaType.equals(SimpleMetaType.BIGDECIMAL) ||
                    simpleMetaType.equals(SimpleMetaType.BIGINTEGER) ||
                    simpleMetaType.equals(SimpleMetaType.BYTE) ||
                    simpleMetaType.equals(SimpleMetaType.BYTE_PRIMITIVE) ||
                    simpleMetaType.equals(SimpleMetaType.DOUBLE) ||
                    simpleMetaType.equals(SimpleMetaType.DOUBLE_PRIMITIVE) ||
                    simpleMetaType.equals(SimpleMetaType.FLOAT) ||
                    simpleMetaType.equals(SimpleMetaType.FLOAT_PRIMITIVE) ||
                    simpleMetaType.equals(SimpleMetaType.INTEGER) ||
                    simpleMetaType.equals(SimpleMetaType.INTEGER_PRIMITIVE) ||
                    simpleMetaType.equals(SimpleMetaType.LONG) ||
                    simpleMetaType.equals(SimpleMetaType.LONG_PRIMITIVE) ||
                    simpleMetaType.equals(SimpleMetaType.SHORT) ||
                    simpleMetaType.equals(SimpleMetaType.SHORT_PRIMITIVE));
    }

    private MetaTypeUtils()
    {
    }
}