| java.lang.Object | ||
| ↳ | java.lang.Enum<E extends java.lang.Enum<E>> | |
| ↳ | org.springframework.transaction.annotation.Isolation | |
Class Overview
Enumeration that represents transaction isolation levels for use
with the Transactional annotation, corresponding to the
TransactionDefinition interface.
Summary
| Enum Values | |||||||||||
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| Isolation | DEFAULT | Use the default isolation level of the underlying datastore. | |||||||||
| Isolation | READ_COMMITTED | A constant indicating that dirty reads are prevented; non-repeatable reads and phantom reads can occur. | |||||||||
| Isolation | READ_UNCOMMITTED | A constant indicating that dirty reads, non-repeatable reads and phantom reads can occur. | |||||||||
| Isolation | REPEATABLE_READ | A constant indicating that dirty reads and non-repeatable reads are prevented; phantom reads can occur. | |||||||||
| Isolation | SERIALIZABLE | A constant indicating that dirty reads, non-repeatable reads and phantom reads are prevented. | |||||||||
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From class
java.lang.Enum
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From class
java.lang.Object
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From interface
java.lang.Comparable
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Enum Values
public static final Isolation DEFAULT
Use the default isolation level of the underlying datastore. All other levels correspond to the JDBC isolation levels.
See Also
public static final Isolation READ_COMMITTED
A constant indicating that dirty reads are prevented; non-repeatable reads and phantom reads can occur. This level only prohibits a transaction from reading a row with uncommitted changes in it.
See Also
public static final Isolation READ_UNCOMMITTED
A constant indicating that dirty reads, non-repeatable reads and phantom reads can occur. This level allows a row changed by one transaction to be read by another transaction before any changes in that row have been committed (a "dirty read"). If any of the changes are rolled back, the second transaction will have retrieved an invalid row.
See Also
public static final Isolation REPEATABLE_READ
A constant indicating that dirty reads and non-repeatable reads are prevented; phantom reads can occur. This level prohibits a transaction from reading a row with uncommitted changes in it, and it also prohibits the situation where one transaction reads a row, a second transaction alters the row, and the first transaction rereads the row, getting different values the second time (a "non-repeatable read").
See Also
public static final Isolation SERIALIZABLE
A constant indicating that dirty reads, non-repeatable reads and phantom
reads are prevented. This level includes the prohibitions in
ISOLATION_REPEATABLE_READ and further prohibits the situation
where one transaction reads all rows that satisfy a WHERE
condition, a second transaction inserts a row that satisfies that
WHERE condition, and the first transaction rereads for the
same condition, retrieving the additional "phantom" row in the second read.