java.lang.Object
- com.mysql.cj.result.Field

所有已实现的接口:

ProtocolEntity
```
public class Field
extends Object
implements ProtocolEntity
```
Field is a class used to describe fields in a ResultSet

构造器概要

构造器
构造器	说明
`Field(LazyString databaseName, LazyString tableName, LazyString originalTableName, LazyString columnName, LazyString originalColumnName, long length, int mysqlTypeId, short colFlag, int colDecimals, int collationIndex, String encoding, MysqlType mysqlType)`
`Field(String tableName, String columnName, int collationIndex, String encoding, MysqlType mysqlType, int length)`	Used by prepared statements to re-use result set data conversion methods when generating bound parameter retrieval instance for statement interceptors.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`int`	`getCollationIndex()`
`String`	`getColumnLabel()`
`String`	`getDatabaseName()`
`int`	`getDecimals()`
`String`	`getEncoding()`	Returns the Java encoding for this field.
`short`	`getFlags()`
`String`	`getFullName()`
`int`	`getJavaType()`
`long`	`getLength()`
`MysqlType`	`getMysqlType()`
`int`	`getMysqlTypeId()`
`String`	`getName()`
`String`	`getOriginalName()`
`String`	`getOriginalTableName()`
`String`	`getTableName()`
`boolean`	`getValueNeedsQuoting()`
`boolean`	`isAutoIncrement()`
`boolean`	`isBinary()`
`boolean`	`isBlob()`
`boolean`	`isFromFunction()`
`boolean`	`isMultipleKey()`
`boolean`	`isNotNull()`
`boolean`	`isPrimaryKey()`
`boolean`	`isReadOnly()`	Is this field _definitely_ not writable?
`boolean`	`isSingleBit()`
`boolean`	`isUniqueKey()`
`boolean`	`isUnsigned()`
`boolean`	`isZeroFill()`
`void`	`setBinary()`
`void`	`setBlob()`
`void`	`setFlags(short colFlag)`
`void`	`setMysqlType(MysqlType mysqlType)`
`void`	`setMysqlTypeId(int id)`
`String`	`toString()`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

Field

public Field(LazyString databaseName,
             LazyString tableName,
             LazyString originalTableName,
             LazyString columnName,
             LazyString originalColumnName,
             long length,
             int mysqlTypeId,
             short colFlag,
             int colDecimals,
             int collationIndex,
             String encoding,
             MysqlType mysqlType)

Field
```
public Field(String tableName,
             String columnName,
             int collationIndex,
             String encoding,
             MysqlType mysqlType,
             int length)
```
Used by prepared statements to re-use result set data conversion methods when generating bound parameter retrieval instance for statement interceptors.

参数:

tableName - not used

columnName - not used

collationIndex - the MySQL collation/character set index

encoding - encoding of data in this field

mysqlType - MysqlType

length - length in characters or bytes (for BINARY data).

方法详细资料

getEncoding
```
public String getEncoding()
```
Returns the Java encoding for this field.

返回:

the Java encoding

getColumnLabel
```
public String getColumnLabel()
```

getDatabaseName
```
public String getDatabaseName()
```

getDecimals
```
public int getDecimals()
```

getFullName
```
public String getFullName()
```

getLength
```
public long getLength()
```

getMysqlTypeId
```
public int getMysqlTypeId()
```

setMysqlTypeId

public void setMysqlTypeId(int id)

getName
```
public String getName()
```

getOriginalName
```
public String getOriginalName()
```

getOriginalTableName
```
public String getOriginalTableName()
```

getJavaType
```
public int getJavaType()
```

getTableName
```
public String getTableName()
```

isAutoIncrement
```
public boolean isAutoIncrement()
```

isBinary
```
public boolean isBinary()
```

setBinary
```
public void setBinary()
```

isBlob
```
public boolean isBlob()
```

setBlob
```
public void setBlob()
```

isMultipleKey
```
public boolean isMultipleKey()
```

isNotNull
```
public boolean isNotNull()
```

isPrimaryKey
```
public boolean isPrimaryKey()
```

isFromFunction
```
public boolean isFromFunction()
```

isReadOnly
```
public boolean isReadOnly()
```
Is this field _definitely_ not writable?

返回:

true if this field can not be written to in an INSERT/UPDATE statement.

isUniqueKey
```
public boolean isUniqueKey()
```

isUnsigned
```
public boolean isUnsigned()
```

isZeroFill
```
public boolean isZeroFill()
```

toString
```
public String toString()
```
覆盖:

toString 在类中 Object

isSingleBit
```
public boolean isSingleBit()
```

getValueNeedsQuoting
```
public boolean getValueNeedsQuoting()
```

getCollationIndex
```
public int getCollationIndex()
```

getMysqlType
```
public MysqlType getMysqlType()
```

setMysqlType

public void setMysqlType(MysqlType mysqlType)

getFlags
```
public short getFlags()
```

setFlags

public void setFlags(short colFlag)

类 Field

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

Field

Field

方法详细资料

getEncoding

getColumnLabel

getDatabaseName

getDecimals

getFullName

getLength

getMysqlTypeId

setMysqlTypeId

getName

getOriginalName

getOriginalTableName

getJavaType

getTableName

isAutoIncrement

isBinary

setBinary

isBlob

setBlob

isMultipleKey

isNotNull

isPrimaryKey

isFromFunction

isReadOnly

isUniqueKey

isUnsigned

isZeroFill

toString

isSingleBit

getValueNeedsQuoting

getCollationIndex

getMysqlType

setMysqlType

getFlags

setFlags