/**
 *
 * Copyright 2005 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.apache.tuscany.sdo.impl;

import org.osoa.sdo.DataObject;
import org.osoa.sdo.Type;

/**
 * @version $Rev$ $Date$
 */
public abstract class AbstractDataObject<T> implements DataObject<T> {
    private final TypeImpl<T> type;

    protected AbstractDataObject(TypeImpl<T> type) {
        this.type = type;
    }

    public Type<T> getType() {
        return type;
    }

    public String getString(int index) {
        Object value = get(index);
        if (value == null) {
            return null;
        }
        Type<?> propType = type.getProperties().get(index).getType();
        if (!propType.isDataType()) {
            throw new UnsupportedOperationException();
        }
        return ((DataTypeImpl) propType).toString(value);
    }

    public void setString(int index, String s) {
        if (s == null) {
            set(index, null);
            return;
        }
        Type<?> propType = type.getProperties().get(index).getType();
        if (!propType.isDataType()) {
            throw new UnsupportedOperationException();
        }
        set(index, ((DataTypeImpl) propType).fromString(s));
    }
}