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SCA4J model of standard SCDL concepts.
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/**
 * SCA4J
 * Copyright (c) 2009 - 2099 Service Symphony Ltd
 *
 * Licensed to you under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  A copy of the license
 * is included in this distrubtion or you may obtain a copy at
 *
 *    http://www.opensource.org/licenses/apache2.0.php
 *
 * 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.
 *
 * This project contains code licensed from the Apache Software Foundation under
 * the Apache License, Version 2.0 and original code from project contributors.
 *
 *
 * Original Codehaus Header
 *
 * Copyright (c) 2007 - 2008 fabric3 project contributors
 *
 * Licensed to you under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  A copy of the license
 * is included in this distrubtion or you may obtain a copy at
 *
 *    http://www.opensource.org/licenses/apache2.0.php
 *
 * 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.
 *
 * This project contains code licensed from the Apache Software Foundation under
 * the Apache License, Version 2.0 and original code from project contributors.
 *
 * Original Apache Header
 *
 * Copyright (c) 2005 - 2006 The Apache Software Foundation
 *
 * Apache Tuscany is an effort undergoing incubation at The Apache Software
 * Foundation (ASF), sponsored by the Apache Web Services PMC. Incubation is
 * required of all newly accepted projects until a further review indicates that
 * the infrastructure, communications, and decision making process have stabilized
 * in a manner consistent with other successful ASF projects. While incubation
 * status is not necessarily a reflection of the completeness or stability of the
 * code, it does indicate that the project has yet to be fully endorsed by the ASF.
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 */
package org.sca4j.scdl;

import java.lang.reflect.Constructor;

/**
 * @version $Rev: 5233 $ $Date: 2008-08-19 22:50:45 +0100 (Tue, 19 Aug 2008) $
 */
public class ConstructorInjectionSite extends InjectionSite {
    private static final long serialVersionUID = -6543986170145816234L;
    private Signature signature;
    private int param;

    public ConstructorInjectionSite(Constructor constructor, int param) {
        super(constructor.getParameterTypes()[param].getName());
        this.signature = new Signature(constructor);
        this.param = param;
    }

    public ConstructorInjectionSite(Signature signature, int param) {
        super(signature.getParameterTypes().get(param));
        this.signature = signature;
        this.param = param;
    }

    /**
     * Returns the signature that identifies the method.
     *
     * @return the signature that identifies the method
     */
    public Signature getSignature() {
        return signature;
    }

    /**
     * Returns the index of the parameter being injected.
     *
     * @return the index of the parameter being injected
     */
    public int getParam() {
        return param;
    }

    public String toString() {
        return signature.toString() + '[' + param + ']';
    }

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

        ConstructorInjectionSite that = (ConstructorInjectionSite) o;

        return param == that.param && signature.equals(that.signature);

    }

    public int hashCode() {
        return 31 * signature.hashCode() + param;
    }
}