Package org.hibernate.tool.schema
Enum UniqueConstraintSchemaUpdateStrategy
- java.lang.Object
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- java.lang.Enum<UniqueConstraintSchemaUpdateStrategy>
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- org.hibernate.tool.schema.UniqueConstraintSchemaUpdateStrategy
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- All Implemented Interfaces:
Serializable
,Comparable<UniqueConstraintSchemaUpdateStrategy>
public enum UniqueConstraintSchemaUpdateStrategy extends Enum<UniqueConstraintSchemaUpdateStrategy>
Unique columns and unique keys both use unique constraints in most dialects. SchemaUpdate needs to create these constraints, but DB's support for finding existing constraints is extremely inconsistent. Further, non-explicitly-named unique constraints use randomly generated characters.
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Enum Constant Summary
Enum Constants Enum Constant Description DROP_RECREATE_QUIETLY
Attempt to drop, then (re-)create each unique constraint.RECREATE_QUIETLY
Attempt to (re-)create unique constraints, ignoring exceptions thrown (e.g., if the constraint already existed)SKIP
Do not attempt to create unique constraints on a schema update
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static UniqueConstraintSchemaUpdateStrategy
byName(String name)
static UniqueConstraintSchemaUpdateStrategy
interpret(Object setting)
static UniqueConstraintSchemaUpdateStrategy
valueOf(String name)
Returns the enum constant of this type with the specified name.static UniqueConstraintSchemaUpdateStrategy[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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DROP_RECREATE_QUIETLY
public static final UniqueConstraintSchemaUpdateStrategy DROP_RECREATE_QUIETLY
Attempt to drop, then (re-)create each unique constraint. Ignore any exceptions thrown. Note that this will require unique keys/constraints to be explicitly named. If Hibernate generates the names (randomly), the drop will not work. DEFAULT
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RECREATE_QUIETLY
public static final UniqueConstraintSchemaUpdateStrategy RECREATE_QUIETLY
Attempt to (re-)create unique constraints, ignoring exceptions thrown (e.g., if the constraint already existed)
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SKIP
public static final UniqueConstraintSchemaUpdateStrategy SKIP
Do not attempt to create unique constraints on a schema update
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Method Detail
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values
public static UniqueConstraintSchemaUpdateStrategy[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (UniqueConstraintSchemaUpdateStrategy c : UniqueConstraintSchemaUpdateStrategy.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static UniqueConstraintSchemaUpdateStrategy valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is null
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byName
public static UniqueConstraintSchemaUpdateStrategy byName(String name)
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interpret
public static UniqueConstraintSchemaUpdateStrategy interpret(Object setting)
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