Enum SqlJetLockType
- java.lang.Object
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- java.lang.Enum<SqlJetLockType>
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- org.tmatesoft.sqljet.core.internal.SqlJetLockType
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<SqlJetLockType>
public enum SqlJetLockType extends java.lang.Enum<SqlJetLockType>
Transaction locks types. PENDING lock may not be passed directly to lock(). Instead, a process that requests an EXCLUSIVE lock may actually obtain a PENDING lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to lock().
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Enum Constant Summary
Enum Constants Enum Constant Description EXCLUSIVE
An EXCLUSIVE lock precludes all other locks.NONE
Not lockedPENDING
A single process may hold a PENDING lock on a file at any one time.RESERVED
A single process may hold a RESERVED lock on a file at any time.SHARED
Any number of processes may hold a SHARED lock simultaneously.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static SqlJetLockType
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static SqlJetLockType[]
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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NONE
public static final SqlJetLockType NONE
Not locked
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SHARED
public static final SqlJetLockType SHARED
Any number of processes may hold a SHARED lock simultaneously.
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RESERVED
public static final SqlJetLockType RESERVED
A single process may hold a RESERVED lock on a file at any time. Other processes may hold and obtain new SHARED locks.
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PENDING
public static final SqlJetLockType PENDING
A single process may hold a PENDING lock on a file at any one time. Existing SHARED locks may persist, but no new SHARED locks may be obtained by other processes.
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EXCLUSIVE
public static final SqlJetLockType EXCLUSIVE
An EXCLUSIVE lock precludes all other locks.
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Method Detail
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values
public static SqlJetLockType[] 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 (SqlJetLockType c : SqlJetLockType.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 SqlJetLockType valueOf(java.lang.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:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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