com.alibaba.innodb.java.reader.config

类 ReaderSystemProperty<T>

java.lang.Object

com.alibaba.innodb.java.reader.config.ReaderSystemProperty<T>

类型参数:

T - the type of the property value

public final class ReaderSystemProperty<T>
extends Object

A specific system property that is used to configure various aspects of the framework.

This is the static configuration which should be loaded when JVM starts to ensure thread-safety.

作者:

Acknowledge Apache Calcite.

字段概要

字段

限定符和类型	字段和说明
static ReaderSystemProperty<String>	COMPOSITE_KEY_DELIMITER For cli, when parsing string to list of objects to build key, use the delimiter.
static ReaderSystemProperty<Boolean>	ENABLE_IBD_FILE_LENGTH_CHECK Whether to enable innodb file length check to see if it can be divided by page size.
static ReaderSystemProperty<Boolean>	ENABLE_INNODB_PAGE_CHECKSUM_ALGORITHM This takes effect only when ENABLE_PAGE_CHECKSUM_CHECK is set to true.
static ReaderSystemProperty<Boolean>	ENABLE_PAGE_CHECKSUM_CHECK Whether to enable innodb page level checksum validation.
static ReaderSystemProperty<Boolean>	ENABLE_THROW_EXCEPTION_FOR_UNSUPPORTED_MYSQL80_LOB Whether to enable throwing exception when reading mysql8.0 new lob page, because currently this does not implement yet.
static ReaderSystemProperty<Boolean>	ENABLE_TRIM_CHAR CHAR type will have \20 padding, but for mysql dump command, the head and tail padding are disappear, so provide this configuration to handle CHAR like mysql dump.
static String	PROP_PREFIX
static ReaderSystemProperty<String>	RANGE_QUERY_KEY_DELIMITER For cli, when parsing range query parameters, the two values will use the delimiter.

方法概要

限定符和类型	方法和说明
T	value() Returns the value of this property.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

PROP_PREFIX

public static final String PROP_PREFIX

另请参阅:

常量字段值

ENABLE_IBD_FILE_LENGTH_CHECK

public static final ReaderSystemProperty<Boolean> ENABLE_IBD_FILE_LENGTH_CHECK

Whether to enable innodb file length check to see if it can be divided by page size.

ENABLE_INNODB_PAGE_CHECKSUM_ALGORITHM

public static final ReaderSystemProperty<Boolean> ENABLE_INNODB_PAGE_CHECKSUM_ALGORITHM

This takes effect only when ENABLE_PAGE_CHECKSUM_CHECK is set to true.

Refer to https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_checksum_algorithm

In MySQL 5.7 or later, crc32 checksum algorithm is the default value for innodb_checksum_algorithm. Here is this framework, crc32 will be used. If the checksum does not match, you can enable this configuration to use innodb checksum algorithm to validate again, this is useful in MySQL 5.6.

ENABLE_PAGE_CHECKSUM_CHECK

public static final ReaderSystemProperty<Boolean> ENABLE_PAGE_CHECKSUM_CHECK

Whether to enable innodb page level checksum validation.

ENABLE_THROW_EXCEPTION_FOR_UNSUPPORTED_MYSQL80_LOB

public static final ReaderSystemProperty<Boolean> ENABLE_THROW_EXCEPTION_FOR_UNSUPPORTED_MYSQL80_LOB

Whether to enable throwing exception when reading mysql8.0 new lob page, because currently this does not implement yet.

ENABLE_TRIM_CHAR

public static final ReaderSystemProperty<Boolean> ENABLE_TRIM_CHAR

CHAR type will have \20 padding, but for mysql dump command, the head and tail padding are disappear, so provide this configuration to handle CHAR like mysql dump.

COMPOSITE_KEY_DELIMITER

public static final ReaderSystemProperty<String> COMPOSITE_KEY_DELIMITER

For cli, when parsing string to list of objects to build key, use the delimiter.

RANGE_QUERY_KEY_DELIMITER

public static final ReaderSystemProperty<String> RANGE_QUERY_KEY_DELIMITER

For cli, when parsing range query parameters, the two values will use the delimiter.

方法详细资料

value

public T value()

Returns the value of this property.

返回:

the value of this property or null if a default value has not been defined for this property.