/*
*  Copyright (c) WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. licenses this file to you 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.wso2.balana.attr.proxy;

import org.wso2.balana.attr.AttributeProxy;
import org.wso2.balana.attr.AttributeValue;

/**
 * Abstract represent of <code>AttributeProxy</code> introduces simple method when there is no
 * additional parameters to create the instance
 */
public abstract class AbstractAttributeProxy implements AttributeProxy {

    /**
     * Tries to create a new <code>AttributeValue</code> based on the given String data.
     *
     * @param value the text form of some attribute data
     *
     * @return an <code>AttributeValue</code> representing the given data
     *
     * @throws Exception if the data couldn't be used (the exception is typically wrapping some
     *             other exception)
     */
    public abstract AttributeValue getInstance(String value) throws Exception;

    public AttributeValue getInstance(String value, String[] params) throws Exception {
        if(params == null || params.length < 1){
            return getInstance(value);
        } else {
            throw new Exception("Invalid method is called.");
        }
    }
}
