Enum TransactionIsolation

java.lang.Object
java.lang.Enum<TransactionIsolation>
org.mariadb.jdbc.TransactionIsolation
All Implemented Interfaces:
Serializable, Comparable<TransactionIsolation>

public enum TransactionIsolation extends Enum<TransactionIsolation>
Transaction isolation enumeration
  • Enum Constant Details

    • REPEATABLE_READ

      public static final TransactionIsolation REPEATABLE_READ
      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").
    • READ_COMMITTED

      public static final TransactionIsolation READ_COMMITTED
      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.
    • READ_UNCOMMITTED

      public static final TransactionIsolation READ_UNCOMMITTED
      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.
    • SERIALIZABLE

      public static final TransactionIsolation SERIALIZABLE
      dirty reads, non-repeatable reads and phantom reads are prevented. This level includes the prohibitions in TRANSACTION_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.
  • Field Details

    • value

      private final String value
    • level

      private final int level
  • Constructor Details

    • TransactionIsolation

      private TransactionIsolation(String value, int level)
  • Method Details

    • values

      public static TransactionIsolation[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      Returns:
      an array containing the constants of this enum type, in the order they are declared
    • valueOf

      public static TransactionIsolation 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 name
      NullPointerException - if the argument is null
    • from

      public static TransactionIsolation from(String value)
      Get TransactionIsolation from value
      Parameters:
      value - value
      Returns:
      transaction isolation
    • getValue

      public String getValue()
      Get transaction isolation command
      Returns:
      transaction isolation command
    • getLevel

      public int getLevel()
      Get transaction isolation level
      Returns:
      transaction isolation level