mysql> describe test2;
+-------+------------------+------+-----+---------+-------+
| Field | Type             | Null | Key | Default | Extra |
+-------+------------------+------+-----+---------+-------+
| id    | int(11) unsigned | NO   | PRI | NULL    |       |
| name  | varchar(255)     | NO   |     | NULL    |       |
+-------+------------------+------+-----+---------+-------+

@Entity
@Table(name = "test2")
public class Temp2 extends AbstractPersistable<Long>{

	@Id
	@Column(name = "id", unique = true, nullable = false, updatable = false)
	private long id;

	@Column(name = "name", unique = true, nullable = false, updatable = true)
	private String name;

	public Temp2() {
		// no-args constructor required by JPA spec
		// this one is protected since it shouldn't be used directly
	}

	public Long getId() {
		return id;
	}

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

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
}

This class [class com.example.entity.Temp2] does not define an IdClass
	at org.hibernate.jpa.internal.metamodel.AbstractIdentifiableType.getIdClassAttributes(AbstractIdentifiableType.java:200)
	at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation$IdMetadata.<init>(JpaMetamodelEntityInformation.java:223)
	at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:79)
	at org.springframework.data.jpa.repository.support.JpaPersistableEntityInformation.<init>(JpaPersistableEntityInformation.java:39)
	at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:65)
	at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:145)
	at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:89)
	at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:69)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:173)
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:239)
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:225)
	at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1631)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)
	... 148 more