程序包 org.hibernate
枚举 FetchMode
- java.lang.Object
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- java.lang.Enum<FetchMode>
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- org.hibernate.FetchMode
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- 所有已实现的接口:
Serializable,Comparable<FetchMode>
public enum FetchMode extends Enum<FetchMode>
Represents an association fetching strategy. This is used together with the Criteria API to specify runtime fetching strategies.
For HQL queries, use the FETCH keyword instead.- 作者:
- Gavin King
- 另请参阅:
Criteria.setFetchMode(java.lang.String, FetchMode)
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枚举常量详细资料
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DEFAULT
public static final FetchMode DEFAULT
Default to the setting configured in the mapping file.
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JOIN
public static final FetchMode JOIN
Fetch using an outer join. Equivalent to fetch="join".
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SELECT
public static final FetchMode SELECT
Fetch eagerly, using a separate select. Equivalent to fetch="select".
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字段详细资料
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LAZY
@Deprecated public static final FetchMode LAZY
已过时。use FetchMode.SELECTFetch lazily. Equivalent to outer-join="false".
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EAGER
@Deprecated public static final FetchMode EAGER
已过时。use FetchMode.JOINFetch eagerly, using an outer join. Equivalent to outer-join="true".
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方法详细资料
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values
public static FetchMode[] values()
按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:for (FetchMode c : FetchMode.values()) System.out.println(c);
- 返回:
- 按照声明该枚举类型的常量的顺序返回的包含这些常量的数组
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valueOf
public static FetchMode valueOf(String name)
返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)- 参数:
name- 要返回的枚举常量的名称。- 返回:
- 返回带有指定名称的枚举常量
- 抛出:
IllegalArgumentException- 如果该枚举类型没有带有指定名称的常量NullPointerException- 如果参数为空值
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