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

所有已实现的接口:

ColumnDefinition, ProtocolEntity

直接已知子类:

CachedResultSetMetaDataImpl
```
public class DefaultColumnDefinition
extends Object
implements ColumnDefinition
```
Protocol::ColumnDefinition41 object

字段概要

字段
修饰符和类型字段说明

protected Field[] fields

构造器概要

构造器
构造器说明

DefaultColumnDefinition()

DefaultColumnDefinition(Field[] fields)

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
`void`	`buildIndexMapping()`	Builds a hash between column names and their indices for fast retrieval.
`void`	`exportTo(ColumnDefinition columnDefinition)`
`int`	`findColumn(String columnName, boolean useColumnNamesInFindColumn, int indexBase)`
`Map<String,Integer>`	`getColumnLabelToIndex()`
`Map<String,Integer>`	`getColumnNameToIndex()`
`Map<String,Integer>`	`getColumnToIndexCache()`
`Field[]`	`getFields()`
`Map<String,Integer>`	`getFullColumnNameToIndex()`
`boolean`	`hasBuiltIndexMapping()`
`boolean`	`hasLargeFields()`	Check if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition.
`void`	`initializeFrom(ColumnDefinition columnDefinition)`
`void`	`setColumnLabelToIndex(Map<String,Integer> columnLabelToIndex)`
`void`	`setColumnNameToIndex(Map<String,Integer> colNameToIndex)`
`void`	`setColumnToIndexCache(Map<String,Integer> columnToIndexCache)`
`void`	`setFields(Field[] fields)`
`void`	`setFullColumnNameToIndex(Map<String,Integer> fullColNameToIndex)`

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
  - fields
```
protected Field[] fields
```
- 构造器详细资料
  - DefaultColumnDefinition
```
public DefaultColumnDefinition()
```
  - DefaultColumnDefinition
```
public DefaultColumnDefinition(Field[] fields)
```
- 方法详细资料
  - getFields
```
public Field[] getFields()
```
    指定者:
    
    getFields 在接口中 ColumnDefinition
  - setFields
```
public void setFields(Field[] fields)
```
    指定者:
    
    setFields 在接口中 ColumnDefinition
  - buildIndexMapping
```
public void buildIndexMapping()
```
    从接口复制的说明: ColumnDefinition
    
    Builds a hash between column names and their indices for fast retrieval. This is done lazily to support findColumn() and get*(String), as it can be more expensive than just retrieving result set values by ordinal index.
    
    指定者:
    
    buildIndexMapping 在接口中 ColumnDefinition
  - hasBuiltIndexMapping
```
public boolean hasBuiltIndexMapping()
```
    指定者:
    
    hasBuiltIndexMapping 在接口中 ColumnDefinition
  - getColumnLabelToIndex
```
public Map<String,Integer> getColumnLabelToIndex()
```
    指定者:
    
    getColumnLabelToIndex 在接口中 ColumnDefinition
  - setColumnLabelToIndex
```
public void setColumnLabelToIndex(Map<String,Integer> columnLabelToIndex)
```
    指定者:
    
    setColumnLabelToIndex 在接口中 ColumnDefinition
  - getFullColumnNameToIndex
```
public Map<String,Integer> getFullColumnNameToIndex()
```
    指定者:
    
    getFullColumnNameToIndex 在接口中 ColumnDefinition
  - setFullColumnNameToIndex
```
public void setFullColumnNameToIndex(Map<String,Integer> fullColNameToIndex)
```
    指定者:
    
    setFullColumnNameToIndex 在接口中 ColumnDefinition
  - getColumnNameToIndex
```
public Map<String,Integer> getColumnNameToIndex()
```
    指定者:
    
    getColumnNameToIndex 在接口中 ColumnDefinition
  - setColumnNameToIndex
```
public void setColumnNameToIndex(Map<String,Integer> colNameToIndex)
```
    指定者:
    
    setColumnNameToIndex 在接口中 ColumnDefinition
  - getColumnToIndexCache
```
public Map<String,Integer> getColumnToIndexCache()
```
    指定者:
    
    getColumnToIndexCache 在接口中 ColumnDefinition
  - setColumnToIndexCache
```
public void setColumnToIndexCache(Map<String,Integer> columnToIndexCache)
```
    指定者:
    
    setColumnToIndexCache 在接口中 ColumnDefinition
  - initializeFrom
```
public void initializeFrom(ColumnDefinition columnDefinition)
```
    指定者:
    
    initializeFrom 在接口中 ColumnDefinition
  - exportTo
```
public void exportTo(ColumnDefinition columnDefinition)
```
    指定者:
    
    exportTo 在接口中 ColumnDefinition
  - findColumn
```
public int findColumn(String columnName,
                      boolean useColumnNamesInFindColumn,
                      int indexBase)
```
    指定者:
    
    findColumn 在接口中 ColumnDefinition
  - hasLargeFields
```
public boolean hasLargeFields()
```
    Check if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition. This check is used for making a decision about whether we want to force a buffer row (better for rows with large fields).
    
    指定者:
    
    hasLargeFields 在接口中 ColumnDefinition
    
    返回:
    
    true if this ColumnDefinition has large fields

构造器	说明
`DefaultColumnDefinition()`
`DefaultColumnDefinition(Field[] fields)`

类 DefaultColumnDefinition

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

fields

构造器详细资料

DefaultColumnDefinition

DefaultColumnDefinition

方法详细资料

getFields

setFields

buildIndexMapping

hasBuiltIndexMapping

getColumnLabelToIndex

setColumnLabelToIndex

getFullColumnNameToIndex

setFullColumnNameToIndex

getColumnNameToIndex

setColumnNameToIndex

getColumnToIndexCache

setColumnToIndexCache

initializeFrom

exportTo

findColumn

hasLargeFields