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/*
 Copyright 2013 Red Hat, Inc. and/or its affiliates.

 This file is part of lightblue.

 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, either version 3 of the License, or
 (at your option) any later version.

 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, see .
 */
package com.redhat.lightblue.interceptor;

import java.io.Serializable;

import com.redhat.lightblue.crud.CRUDOperationContext;
import com.redhat.lightblue.crud.DocCtx;
import com.redhat.lightblue.mediator.OperationContext;

public class InterceptPoint implements Serializable {

    private static final long serialVersionUID = 1l;

    public static final class MediatorInterceptPoint extends InterceptPoint {
        private MediatorInterceptPoint(int code) {
            super(MediatorInterceptor.class, code);
        }

        public void call(Interceptor t, OperationContext ctx) {
            ((MediatorInterceptor) t).run(ctx);
        }
    }

    public static final class CRUDControllerInterceptPoint extends InterceptPoint {
        private CRUDControllerInterceptPoint(int code) {
            super(CRUDControllerInterceptor.class, code);
        }

        public void call(Interceptor t, CRUDOperationContext ctx) {
            ((CRUDControllerInterceptor) t).run(ctx);
        }
    }

    public static final class CRUDDocInterceptPoint extends InterceptPoint {
        private CRUDDocInterceptPoint(int code) {
            super(CRUDDocInterceptor.class, code);
        }

        public void call(Interceptor t, CRUDOperationContext ctx, DocCtx doc) {
            ((CRUDDocInterceptor) t).run(ctx, doc);
        }
    }

    public static final MediatorInterceptPoint PRE_MEDIATOR_INSERT = new MediatorInterceptPoint(0);
    public static final CRUDControllerInterceptPoint PRE_CRUD_INSERT = new CRUDControllerInterceptPoint(2);
    public static final CRUDDocInterceptPoint PRE_CRUD_INSERT_DOC = new CRUDDocInterceptPoint(3);

    public static final MediatorInterceptPoint PRE_MEDIATOR_SAVE = new MediatorInterceptPoint(10);
    public static final CRUDControllerInterceptPoint PRE_CRUD_SAVE = new CRUDControllerInterceptPoint(12);
    public static final CRUDDocInterceptPoint PRE_CRUD_UPDATE_DOC_VALIDATION = new CRUDDocInterceptPoint(16);
    public static final CRUDDocInterceptPoint PRE_CRUD_UPDATE_DOC = new CRUDDocInterceptPoint(14);

    public static final MediatorInterceptPoint PRE_MEDIATOR_UPDATE = new MediatorInterceptPoint(20);
    public static final CRUDControllerInterceptPoint PRE_CRUD_UPDATE = new CRUDControllerInterceptPoint(22);
    public static final CRUDControllerInterceptPoint PRE_CRUD_UPDATE_RESULTSET = new CRUDControllerInterceptPoint(24);

    public static final MediatorInterceptPoint PRE_MEDIATOR_DELETE = new MediatorInterceptPoint(30);
    public static final CRUDControllerInterceptPoint PRE_CRUD_DELETE = new CRUDControllerInterceptPoint(32);
    public static final CRUDDocInterceptPoint PRE_CRUD_DELETE_DOC = new CRUDDocInterceptPoint(34);

    public static final MediatorInterceptPoint PRE_MEDIATOR_FIND = new MediatorInterceptPoint(40);
    public static final CRUDControllerInterceptPoint PRE_CRUD_FIND = new CRUDControllerInterceptPoint(42);

    private final Class interceptorClass;
    private final int code;

    private InterceptPoint(Class interceptorClass, int code) {
        this.interceptorClass = interceptorClass;
        this.code = code;
    }

    public Class getInterceptorClass() {
        return interceptorClass;
    }

    @Override
    public int hashCode() {
        return code;
    }

    @Override
    public boolean equals(Object o) {
        if (o instanceof InterceptPoint) {
            return ((InterceptPoint) o).code == code;
        }
        return false;
    }
}