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Bonita Common is the useful layer common to bonita-client and bonita-server

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/**
 * Copyright (C) 2019 Bonitasoft S.A.
 * Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation
 * version 2.1 of the License.
 * This library 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 Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301, USA.
 **/
package org.bonitasoft.engine.bpm.internal;

import java.util.Objects;
import java.util.UUID;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlID;
import javax.xml.bind.annotation.XmlTransient;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.bonitasoft.engine.bpm.BaseElement;

/**
 * @author Danila Mazour
 */
@XmlTransient
@XmlAccessorType(XmlAccessType.FIELD)
public abstract class BaseDefinitionElementImpl implements BaseElement {

    private static final long serialVersionUID = 1L;
    @XmlID
    @XmlJavaTypeAdapter(type = long.class, value = LongToStringAdapter.class)
    @XmlAttribute
    private long id = generateId();

    private long generateId() {
        return Math.abs(UUID.randomUUID().getLeastSignificantBits());
    }

    public BaseDefinitionElementImpl() {
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;
        BaseDefinitionElementImpl that = (BaseDefinitionElementImpl) o;
        return Objects.equals(id, that.id);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }

    @Override
    public long getId() {
        return id;
    }

    public void setId(final long id) {
        this.id = id;
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this)
                .append("id", id)
                .toString();
    }

}