Package com.alibaba.druid.filter.mysql8datetime

Class MySQL8DateTimeResultSetMetaData

java.lang.Object

com.alibaba.druid.filter.mysql8datetime.MySQL8DateTimeResultSetMetaData

All Implemented Interfaces:

ResultSetMetaData, Wrapper

public class MySQL8DateTimeResultSetMetaData
extends Object
implements ResultSetMetaData

针对mysql jdbc 8.0.23及以上版本，通过该方法控制将对象类型转换成原来的类型

Author:

lizongbo

See Also:

...

Field Summary

Fields inherited from interface java.sql.ResultSetMetaData

columnNoNulls, columnNullable, columnNullableUnknown

Constructor Summary

Constructors

Constructor	Description
MySQL8DateTimeResultSetMetaData(ResultSetMetaData resultSetMetaData)

Method Summary

Modifier and Type	Method	Description
String	getCatalogName(int column)
String	getColumnClassName(int column)	针对8.0.24版本开始，如果把mysql DATETIME映射回Timestamp，就需要把javaClass的类型也改回去 相关类在com.mysql.cj.MysqlType 中 旧版本jdbc为 DATETIME("DATETIME", Types.TIMESTAMP, Timestamp.class, 0, MysqlType.IS_NOT_DECIMAL, 26L, "[(fsp)]"), 8.0.24及以上版本jdbc实现改为 DATETIME("DATETIME", Types.TIMESTAMP, LocalDateTime.class, 0, MysqlType.IS_NOT_DECIMAL, 26L, "[(fsp)]"),
int	getColumnCount()
int	getColumnDisplaySize(int column)
String	getColumnLabel(int column)
String	getColumnName(int column)
int	getColumnType(int column)
String	getColumnTypeName(int column)
int	getPrecision(int column)
int	getScale(int column)
String	getSchemaName(int column)
String	getTableName(int column)
boolean	isAutoIncrement(int column)
boolean	isCaseSensitive(int column)
boolean	isCurrency(int column)
boolean	isDefinitelyWritable(int column)
int	isNullable(int column)
boolean	isReadOnly(int column)
boolean	isSearchable(int column)
boolean	isSigned(int column)
boolean	isWrapperFor(Class<?> iface)
boolean	isWritable(int column)
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

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

Constructor Detail

MySQL8DateTimeResultSetMetaData

public MySQL8DateTimeResultSetMetaData(ResultSetMetaData resultSetMetaData)

Method Detail

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Specified by:

unwrap in interface Wrapper

Throws:

SQLException

getColumnCount

public int getColumnCount()
                   throws SQLException

Specified by:

getColumnCount in interface ResultSetMetaData

Throws:

SQLException

isAutoIncrement

public boolean isAutoIncrement(int column)
                        throws SQLException

Specified by:

isAutoIncrement in interface ResultSetMetaData

Throws:

SQLException

isCaseSensitive

public boolean isCaseSensitive(int column)
                        throws SQLException

Specified by:

isCaseSensitive in interface ResultSetMetaData

Throws:

SQLException

isSearchable

public boolean isSearchable(int column)
                     throws SQLException

Specified by:

isSearchable in interface ResultSetMetaData

Throws:

SQLException

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Specified by:

isWrapperFor in interface Wrapper

Throws:

SQLException

isCurrency

public boolean isCurrency(int column)
                   throws SQLException

Specified by:

isCurrency in interface ResultSetMetaData

Throws:

SQLException

isNullable

public int isNullable(int column)
               throws SQLException

Specified by:

isNullable in interface ResultSetMetaData

Throws:

SQLException

isSigned

public boolean isSigned(int column)
                 throws SQLException

Specified by:

isSigned in interface ResultSetMetaData

Throws:

SQLException

getColumnDisplaySize

public int getColumnDisplaySize(int column)
                         throws SQLException

Specified by:

getColumnDisplaySize in interface ResultSetMetaData

Throws:

SQLException

getColumnLabel

public String getColumnLabel(int column)
                      throws SQLException

Specified by:

getColumnLabel in interface ResultSetMetaData

Throws:

SQLException

getColumnName

public String getColumnName(int column)
                     throws SQLException

Specified by:

getColumnName in interface ResultSetMetaData

Throws:

SQLException

getSchemaName

public String getSchemaName(int column)
                     throws SQLException

Specified by:

getSchemaName in interface ResultSetMetaData

Throws:

SQLException

getPrecision

public int getPrecision(int column)
                 throws SQLException

Specified by:

getPrecision in interface ResultSetMetaData

Throws:

SQLException

getScale

public int getScale(int column)
             throws SQLException

Specified by:

getScale in interface ResultSetMetaData

Throws:

SQLException

getTableName

public String getTableName(int column)
                    throws SQLException

Specified by:

getTableName in interface ResultSetMetaData

Throws:

SQLException

getCatalogName

public String getCatalogName(int column)
                      throws SQLException

Specified by:

getCatalogName in interface ResultSetMetaData

Throws:

SQLException

getColumnType

public int getColumnType(int column)
                  throws SQLException

Specified by:

getColumnType in interface ResultSetMetaData

Throws:

SQLException

getColumnTypeName

public String getColumnTypeName(int column)
                         throws SQLException

Specified by:

getColumnTypeName in interface ResultSetMetaData

Throws:

SQLException

isReadOnly

public boolean isReadOnly(int column)
                   throws SQLException

Specified by:

isReadOnly in interface ResultSetMetaData

Throws:

SQLException

isWritable

public boolean isWritable(int column)
                   throws SQLException

Specified by:

isWritable in interface ResultSetMetaData

Throws:

SQLException

isDefinitelyWritable

public boolean isDefinitelyWritable(int column)
                             throws SQLException

Specified by:

isDefinitelyWritable in interface ResultSetMetaData

Throws:

SQLException

getColumnClassName

public String getColumnClassName(int column)
                          throws SQLException

针对8.0.24版本开始，如果把mysql DATETIME映射回Timestamp，就需要把javaClass的类型也改回去 相关类在com.mysql.cj.MysqlType 中 旧版本jdbc为 DATETIME("DATETIME", Types.TIMESTAMP, Timestamp.class, 0, MysqlType.IS_NOT_DECIMAL, 26L, "[(fsp)]"), 8.0.24及以上版本jdbc实现改为 DATETIME("DATETIME", Types.TIMESTAMP, LocalDateTime.class, 0, MysqlType.IS_NOT_DECIMAL, 26L, "[(fsp)]"),

Specified by:

getColumnClassName in interface ResultSetMetaData

Parameters:

column - 列的索引位

Returns:

列名称

Throws:

SQLException - 如果发生数据库访问错误

See Also:

ResultSetMetaData.getColumnClassName(int)