Spring JPA Project -- Creating entities from table using Hibernate and sybase

[ndhande]

Hi,

I am trying to generate JPA entities from existing tables using JPA tools provided in the SpringSource 3.1. For this I have created one JPA project. The setup is

Hibernate version 4.1.4
Sybase ASE 15.7

The problem is, when I try to create entity for the table below :

create table validation_error  (
        job_id   bigint not null,
        line_number bigint not null,
	test_it     bigint ,
        description      varchar(132),
 	primary key clustered (job_id,line_number)
)

It maps to two entities as it has composite primary key.

@Entity
@Table(name="validation_error")
public class ValidationError implements Serializable, DomainObject {
	private static final long serialVersionUID = 1L;
	private ValidationErrorPK id;
	private String description;
	private BigInteger testIt;

	public ValidationError() {
	}


	@EmbeddedId
	public ValidationErrorPK getId() {
		return this.id;
	}

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


	@Column(nullable=false, length=132)
	public String getDescription() {
		return this.description;
	}

	public void setDescription(String description) {
		this.description = description;
	}


	@Column(name="test_it", nullable=false)
	public BigInteger getTestIt() {
		return this.testIt;
	}

	public void setTestIt(BigInteger testIt) {
		this.testIt = testIt;
	}

}

and

@Embeddable
public class ValidationErrorPK implements Serializable {
	//default serial version id, required for serializable classes.
	private static final long serialVersionUID = 1L;
	private String jobId;
	private String lineNumber;

	public ValidationErrorPK() {
	}

	@Column(name="job_id", unique=true, nullable=false)
	public String getJobId() {
		return this.jobId;
	}
	public void setJobId(String jobId) {
		this.jobId = jobId;
	}

	@Column(name="line_number", unique=true, nullable=false)
	public String getLineNumber() {
		return this.lineNumber;
	}
	public void setLineNumber(String lineNumber) {
		this.lineNumber = lineNumber;
	}

	public boolean equals(Object other) {
		if (this == other) {
			return true;
		}
		if (!(other instanceof ValidationErrorPK)) {
			return false;
		}
		ValidationErrorPK castOther = (ValidationErrorPK)other;
		return 
			this.jobId.equals(castOther.jobId)
			&& this.lineNumber.equals(castOther.lineNumber);
	}

	public int hashCode() {
		final int prime = 31;
		int hash = 17;
		hash = hash * prime + this.jobId.hashCode();
		hash = hash * prime + this.lineNumber.hashCode();
		
		return hash;
	}
}

From the code it shows that the bigint columns in the primary key are mapped to String instead of BigInteger but the non-key test_it field is mapped to proper BigInteger.

Any Specific reason of this type of different conversion ? and is any addition setting is required to correct this problem ?

Thanks