Java tutorial
package com.romeikat.datamessie.core.domain.entity.impl; /*- * ============================LICENSE_START============================ * data.messie (core) * ===================================================================== * Copyright (C) 2013 - 2017 Dr. Raphael Romeikat * ===================================================================== * 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 <http://www.gnu.org/licenses/gpl-3.0.html>. * =============================LICENSE_END============================= */ import java.io.Serializable; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.UniqueConstraint; import org.apache.commons.lang3.builder.EqualsBuilder; import org.apache.commons.lang3.builder.HashCodeBuilder; import com.romeikat.datamessie.core.domain.entity.AbstractEntityWithoutIdAndVersion; @Entity @Table(name = FooEntityWithoutIdAndVersion.TABLE_NAME, uniqueConstraints = { @UniqueConstraint(name = "fooEntityWithoutIdAndVersion_name", columnNames = { "name" }) }) public class FooEntityWithoutIdAndVersion extends AbstractEntityWithoutIdAndVersion implements Serializable { public static final String TABLE_NAME = "fooEntityWithoutIdAndVersion"; private static final long serialVersionUID = 1L; private String name; public FooEntityWithoutIdAndVersion() { } public FooEntityWithoutIdAndVersion(final String name) { this.name = name; } @Id @Column(nullable = false) public String getName() { return name; } public FooEntityWithoutIdAndVersion setName(final String name) { this.name = name; return this; } @Override public boolean equals(final Object other) { if (other == null) { return false; } if (other == this) { return true; } if (other.getClass() != getClass()) { return false; } final FooEntityWithoutIdAndVersion otherBar = (FooEntityWithoutIdAndVersion) other; final boolean equals = new EqualsBuilder().append(name, otherBar.name).isEquals(); return equals; } @Override public int hashCode() { final int hashCode = new HashCodeBuilder().append(name).toHashCode(); return hashCode; } }