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我有一個hibernate實體(paygrade)與多個孩子(paysteps),我試圖在應用程序中查詢這些孩子。不幸的是,我只能檢索查詢的第一條記錄。這裏有休眠一對多不返回完整的結果集
public class Paygrade extends Persistent {
@Id
@Column(length = 80, updatable=false)
private String code;
@Column(length = 80, updatable=false)
private String name;
@OneToMany(mappedBy = "paygrade", fetch = FetchType.LAZY)
@ForeignKey(name = "none")
private Set<Paystep> paygradeSteps = new HashSet<Paystep>();
// getters and setters
}
@IdClass(PaystepPK.class)
public class Paystep {
@Id
@Column(length = 80, updatable=false)
protected String gradeCode;
@Column(length = 80, updatable=false)
protected String gradeName;
@Id
@Column(length = 80, updatable=false)
protected String scaleCode;
@Column(length = 80, updatable=false)
protected String scaleName;
@Column(length = 80, updatable=false)
protected String scalePoint;
@Column(updatable=false)
protected Long scaleValue;
@ManyToOne
@ForeignKey(name = "none")
@JoinColumn (name="grade_code", updatable = false, insertable = false)
private Paygrade paygrade;
// getters and setters
}
下面的查詢是Hibernate調用getPaygradeSteps當paygrade實例()方法調用的實體:
Hibernate:
/* load one-to-many ...Paygrade.paygradeSteps */ select
paygradest0_.grade_code as grade1_38_1_,
paygradest0_.grade_code as grade1_1_,
paygradest0_.scale_code as scale2_1_,
paygradest0_.grade_code as grade1_39_0_,
paygradest0_.scale_code as scale2_39_0_,
paygradest0_.grade_name as grade3_39_0_,
paygradest0_.scale_name as scale4_39_0_,
paygradest0_.scale_point as scale5_39_0_,
paygradest0_.scale_value as scale6_39_0_
from
tv_grade_point paygradest0_
where
paygradest0_.grade_code= 'Grade 9'
查詢從數據庫返回9個結果,但冬眠只有永遠檢索第一條記錄。我假設它可能與paystep的組合鍵(使用休眠與遺留數據庫相關的危險)有關。
有誰知道爲什麼會出現這種行爲?