org.redkalex.source.mysql

类 MyCharsetMapping

java.lang.Object

org.redkalex.source.mysql.MyCharsetMapping

public class MyCharsetMapping
extends Object

作者:

zhangjx

字段概要

字段

限定符和类型	字段和说明
static Map<String,org.redkalex.source.mysql.MysqlCharset>	CHARSET_NAME_TO_CHARSET
static Map<String,Integer>	CHARSET_NAME_TO_COLLATION_INDEX
static org.redkalex.source.mysql.MysqlCharset[]	COLLATION_INDEX_TO_CHARSET
static String[]	COLLATION_INDEX_TO_COLLATION_NAME
static String	COLLATION_NOT_DEFINED
static int	MAP_SIZE
static int	MYSQL_COLLATION_INDEX_binary
static int	MYSQL_COLLATION_INDEX_utf8
static String	NOT_USED
static Set<Integer>	UTF8MB4_INDEXES

构造器概要

构造器

构造器和说明
MyCharsetMapping()

方法概要

限定符和类型	方法和说明
static int	getCollationIndexForJavaEncoding(String javaEncoding)
static String	getJavaEncodingForCollationIndex(Integer collationIndex)
static String	getJavaEncodingForCollationIndex(Integer collationIndex, String javaEncoding)
static String	getJavaEncodingForMysqlCharset(String mysqlCharsetName)
static String	getJavaEncodingForMysqlCharset(String mysqlCharsetName, String javaEncoding) MySQL charset could map to several Java encodings.
static int	getMblen(String charsetName)
static String	getMysqlCharsetForJavaEncoding(String javaEncoding)
static String	getMysqlCharsetNameForCollationIndex(Integer collationIndex)
static boolean	isMultibyteCharset(String javaEncodingName) Character sets that we can't convert ourselves.

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

MAP_SIZE

public static final int MAP_SIZE

另请参阅:

常量字段值

COLLATION_INDEX_TO_COLLATION_NAME

public static final String[] COLLATION_INDEX_TO_COLLATION_NAME

COLLATION_INDEX_TO_CHARSET

public static final org.redkalex.source.mysql.MysqlCharset[] COLLATION_INDEX_TO_CHARSET

CHARSET_NAME_TO_CHARSET

public static final Map<String,org.redkalex.source.mysql.MysqlCharset> CHARSET_NAME_TO_CHARSET

CHARSET_NAME_TO_COLLATION_INDEX

public static final Map<String,Integer> CHARSET_NAME_TO_COLLATION_INDEX

UTF8MB4_INDEXES

public static final Set<Integer> UTF8MB4_INDEXES

NOT_USED

public static final String NOT_USED

另请参阅:

常量字段值

COLLATION_NOT_DEFINED

public static final String COLLATION_NOT_DEFINED

另请参阅:

常量字段值

MYSQL_COLLATION_INDEX_utf8

public static final int MYSQL_COLLATION_INDEX_utf8

另请参阅:

常量字段值

MYSQL_COLLATION_INDEX_binary

public static final int MYSQL_COLLATION_INDEX_binary

另请参阅:

常量字段值

构造器详细资料

MyCharsetMapping

public MyCharsetMapping()

方法详细资料

getMysqlCharsetForJavaEncoding

public static final String getMysqlCharsetForJavaEncoding(String javaEncoding)

getCollationIndexForJavaEncoding

public static int getCollationIndexForJavaEncoding(String javaEncoding)

getMysqlCharsetNameForCollationIndex

public static String getMysqlCharsetNameForCollationIndex(Integer collationIndex)

getJavaEncodingForMysqlCharset

public static String getJavaEncodingForMysqlCharset(String mysqlCharsetName,
                                                    String javaEncoding)

MySQL charset could map to several Java encodings. So here we choose the one according to next rules: if there is no static mapping for this charset then return javaEncoding value as is because this could be a custom charset for example if static mapping exists and javaEncoding equals to one of Java encoding canonical names or aliases available for this mapping then javaEncoding value as is; this is required when result should match to connection encoding, for example if connection encoding is Cp943 we must avoid getting SHIFT_JIS for sjis mysql charset if static mapping exists and javaEncoding doesn't match any Java encoding canonical names or aliases available for this mapping then return default Java encoding (the first in mapping list)

参数:

mysqlCharsetName - String

javaEncoding - String

返回:

String

getJavaEncodingForMysqlCharset

public static String getJavaEncodingForMysqlCharset(String mysqlCharsetName)

getJavaEncodingForCollationIndex

public static String getJavaEncodingForCollationIndex(Integer collationIndex,
                                                      String javaEncoding)

getJavaEncodingForCollationIndex

public static String getJavaEncodingForCollationIndex(Integer collationIndex)

isMultibyteCharset

public static final boolean isMultibyteCharset(String javaEncodingName)

Character sets that we can't convert ourselves.

参数:

javaEncodingName - String

返回:

boolean

getMblen

public static int getMblen(String charsetName)