Query Hibernate con tabla sem PK

session.CreateCriteria(Cliente.class)
.add( Expression.eq("nome", "Daniel Passos") );

import java.util.Date;
public class Glcoargu {
	private String ARG_IDEPRO;
	private String ARG_IDEPCC;
	private Integer ARG_KEYUSU;
	private Date ARG_FECINI;
	private String ARG_HORINI;
	private String ARG_PVALOR;
	private String ARG_KEYCAM;
	private String ARG_DESCAM;
	
	
	public String getARG_DESCAM() {
		return ARG_DESCAM;
	}
	public void setARG_DESCAM(String arg_descam) {
		ARG_DESCAM = arg_descam;
	}
	public Date getARG_FECINI() {
		return ARG_FECINI;
	}
	public void setARG_FECINI(Date arg_fecini) {
		ARG_FECINI = arg_fecini;
	}
	public String getARG_HORINI() {
		return ARG_HORINI;
	}
	public void setARG_HORINI(String arg_horini) {
		ARG_HORINI = arg_horini;
	}
	public String getARG_IDEPCC() {
		return ARG_IDEPCC;
	}
	public void setARG_IDEPCC(String arg_idepcc) {
		ARG_IDEPCC = arg_idepcc;
	}
	public String getARG_IDEPRO() {
		return ARG_IDEPRO;
	}
	public void setARG_IDEPRO(String arg_idepro) {
		ARG_IDEPRO = arg_idepro;
	}
	public String getARG_KEYCAM() {
		return ARG_KEYCAM;
	}
	public void setARG_KEYCAM(String arg_keycam) {
		ARG_KEYCAM = arg_keycam;
	}
	public Integer getARG_KEYUSU() {
		return ARG_KEYUSU;
	}
	public void setARG_KEYUSU(Integer arg_keyusu) {
		ARG_KEYUSU = arg_keyusu;
	}
	public String getARG_PVALOR() {
		return ARG_PVALOR;
	}
	public void setARG_PVALOR(String arg_pvalor) {
		ARG_PVALOR = arg_pvalor;
	}
}