JpaUtil.java

/*
 * (c) Copyright 2005-2012 JAXIO, www.jaxio.com
 * Source code generated by Celerio, a Jaxio product
 * Want to use Celerio within your company? email us at info@jaxio.com
 * Follow us on twitter: @springfuse
 * Template pack-backend-sd:src/main/java/project/repository/support/JpaUtil.p.vm.java
 */
package com.company.demo.repository.support;

import static java.lang.reflect.Modifier.isPublic;

import java.lang.reflect.Method;

import javax.persistence.EmbeddedId;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

public abstract class JpaUtil {

    public static boolean isEntityIdManuallyAssigned(Class<?> type) {
        for (Method method : type.getMethods()) {
            if (isPrimaryKey(method)) {
                return isManuallyAssigned(method);
            }
        }
        return false; // no pk found, should not happen
    }

    private static boolean isPrimaryKey(Method method) {
        return isPublic(method.getModifiers())
                && (method.getAnnotation(Id.class) != null || method.getAnnotation(EmbeddedId.class) != null);
    }

    private static boolean isManuallyAssigned(Method method) {
        if (method.getAnnotation(Id.class) != null) {
            return method.getAnnotation(GeneratedValue.class) == null;
        } else if (method.getAnnotation(EmbeddedId.class) != null) {
            return true;
        } else {
            return true;
        }
    }
}