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/*
* Fabric3
* Copyright (c) 2009 Metaform Systems
*
* Fabric3 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, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 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 Fabric3.
* If not, see .
*/
package org.fabric3.jmx.runtime;

import java.lang.reflect.Method;
import java.util.Arrays;

/**
 * @version $Rev: 7146 $ $Date: 2009-06-15 01:28:54 +0200 (Mon, 15 Jun 2009) $
 */
public class OperationKey {
    private final String name;
    private final String[] params;
    private final int hashCode;

    public OperationKey(String name, String[] params) {
        this.name = name;
        this.params = params;
        hashCode = 31 * this.name.hashCode() + Arrays.hashCode(this.params);
    }

    public OperationKey(Method method) {
        this.name = method.getName();
        Class[] paramTypes = method.getParameterTypes();
        this.params = new String[paramTypes.length];
        for (int i = 0; i < paramTypes.length; i++) {
            params[i] = paramTypes[i].getName();
        }
        hashCode = 31 * this.name.hashCode() + Arrays.hashCode(this.params);
    }

    public String toString() {
        StringBuilder sig = new StringBuilder();
        sig.append(name).append('(');
        if (params.length > 0) {
            sig.append(params[0]);
            for (int i = 1; i < params.length; i++) {
                sig.append(',').append(params[i]);
            }
        }
        sig.append(')');
        return sig.toString();
    }

    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        OperationKey that = (OperationKey) o;

        return name.equals(that.name) && Arrays.equals(params, that.params);

    }

    public int hashCode() {
        return hashCode;
    }
}