Package io.debezium.connector.db2

Enum Db2ConnectorConfig.SnapshotIsolationMode

java.lang.Object

java.lang.Enum<Db2ConnectorConfig.SnapshotIsolationMode>

io.debezium.connector.db2.Db2ConnectorConfig.SnapshotIsolationMode

All Implemented Interfaces:

io.debezium.config.EnumeratedValue, Serializable, Comparable<Db2ConnectorConfig.SnapshotIsolationMode>

Enclosing class:

Db2ConnectorConfig

public static enum Db2ConnectorConfig.SnapshotIsolationMode
extends Enum<Db2ConnectorConfig.SnapshotIsolationMode>
implements io.debezium.config.EnumeratedValue

The set of predefined snapshot isolation mode options. https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.5.0/com.ibm.db2.luw.apdv.java.doc/src/tpc/imjcc_r0052429.html

Enum Constant Summary

Enum Constants

Enum Constant	Description
EXCLUSIVE	This mode will block all reads and writes for the entire duration of the snapshot.
READ_COMMITTED	This mode uses READ COMMITTED isolation level.
READ_UNCOMMITTED	This mode uses READ UNCOMMITTED isolation level.
REPEATABLE_READ	This mode uses REPEATABLE READ isolation level.

Field Summary

Fields

Modifier and Type	Field	Description
private String	value

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SnapshotIsolationMode(String value)

Method Summary

Modifier and Type	Method	Description
String	getValue()
static Db2ConnectorConfig.SnapshotIsolationMode	parse(String value)	Determine if the supplied value is one of the predefined options.
static Db2ConnectorConfig.SnapshotIsolationMode	parse(String value, String defaultValue)	Determine if the supplied value is one of the predefined options.
static Db2ConnectorConfig.SnapshotIsolationMode	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Db2ConnectorConfig.SnapshotIsolationMode[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

EXCLUSIVE

public static final Db2ConnectorConfig.SnapshotIsolationMode EXCLUSIVE

This mode will block all reads and writes for the entire duration of the snapshot. The connector will execute SELECT * FROM .. WITH (TABLOCKX)

REPEATABLE_READ

public static final Db2ConnectorConfig.SnapshotIsolationMode REPEATABLE_READ

This mode uses REPEATABLE READ isolation level. This mode will avoid taking any table locks during the snapshot process, except schema snapshot phase where exclusive table locks are acquired for a short period. Since phantom reads can occur, it does not fully guarantee consistency.

READ_COMMITTED

public static final Db2ConnectorConfig.SnapshotIsolationMode READ_COMMITTED

This mode uses READ COMMITTED isolation level. This mode does not take any table locks during the snapshot process. In addition, it does not take any long-lasting row-level locks, like in repeatable read isolation level. Snapshot consistency is not guaranteed.

READ_UNCOMMITTED

public static final Db2ConnectorConfig.SnapshotIsolationMode READ_UNCOMMITTED

This mode uses READ UNCOMMITTED isolation level. This mode takes neither table locks nor row-level locks during the snapshot process. This way other transactions are not affected by initial snapshot process. However, snapshot consistency is not guaranteed.

Field Detail

value

private final String value

Constructor Detail

SnapshotIsolationMode

private SnapshotIsolationMode(String value)

Method Detail

values

public static Db2ConnectorConfig.SnapshotIsolationMode[] 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 (Db2ConnectorConfig.SnapshotIsolationMode c : Db2ConnectorConfig.SnapshotIsolationMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Db2ConnectorConfig.SnapshotIsolationMode 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

getValue

public String getValue()

Specified by:

getValue in interface io.debezium.config.EnumeratedValue

parse

public static Db2ConnectorConfig.SnapshotIsolationMode parse(String value)

Determine if the supplied value is one of the predefined options.

Parameters:

value - the configuration property value; may not be null

Returns:

the matching option, or null if no match is found

parse

public static Db2ConnectorConfig.SnapshotIsolationMode parse(String value,
                                                             String defaultValue)

Determine if the supplied value is one of the predefined options.

Parameters:

value - the configuration property value; may not be null

defaultValue - the default value; may be null

Returns:

the matching option, or null if no match is found and the non-null default is invalid