AlterColumnTypeEvent (flink-cdc-common 3.3.0 API)

java.lang.Object
- org.apache.flink.cdc.common.event.AlterColumnTypeEvent

所有已实现的接口:

Serializable, ChangeEvent, Event, SchemaChangeEvent, SchemaChangeEventWithPreSchema
```
@PublicEvolving
public class AlterColumnTypeEvent
extends Object
implements SchemaChangeEventWithPreSchema, SchemaChangeEvent
```
A SchemaChangeEvent that represents an ALTER COLUMN DDL, which may contain the lenient column type changes.

另请参阅:

序列化表格

构造器概要

构造器
构造器和说明
`AlterColumnTypeEvent(TableId tableId, Map<String,DataType> typeMapping)`
`AlterColumnTypeEvent(TableId tableId, Map<String,DataType> typeMapping, Map<String,DataType> oldTypeMapping)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`SchemaChangeEvent`	`copy(TableId newTableId)` Creates a copy of `SchemaChangeEvent` with new `TableId`.
`boolean`	`equals(Object o)`
`void`	`fillPreSchema(Schema oldTypeSchema)` Append schema before change info to this event.
`Map<String,DataType>`	`getOldTypeMapping()`
`SchemaChangeEventType`	`getType()` Returns its `SchemaChangeEventType`.
`Map<String,DataType>`	`getTypeMapping()` Returns the type mapping.
`int`	`hashCode()`
`boolean`	`hasPreSchema()` Describes if this event already has schema before change info.
`TableId`	`tableId()` Describes the database table corresponding to the occurrence of a change event.
`String`	`toString()`
`boolean`	`trimRedundantChanges()` Check if this event contains redundant schema change request only.

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

- 构造器详细资料
  - AlterColumnTypeEvent
```
public AlterColumnTypeEvent(TableId tableId,
                            Map<String,DataType> typeMapping)
```
  - AlterColumnTypeEvent
```
public AlterColumnTypeEvent(TableId tableId,
                            Map<String,DataType> typeMapping,
                            Map<String,DataType> oldTypeMapping)
```
- 方法详细资料
  - getTypeMapping
```
public Map<String,DataType> getTypeMapping()
```
    Returns the type mapping.
  - equals
```
public boolean equals(Object o)
```
    覆盖:
    
    equals 在类中 Object
  - hashCode
```
public int hashCode()
```
    覆盖:
    
    hashCode 在类中 Object
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object
  - tableId
```
public TableId tableId()
```
    从接口复制的说明: ChangeEvent
    
    Describes the database table corresponding to the occurrence of a change event.
    
    指定者:
    
    tableId 在接口中 ChangeEvent
  - getOldTypeMapping
```
public Map<String,DataType> getOldTypeMapping()
```
  - hasPreSchema
```
public boolean hasPreSchema()
```
    从接口复制的说明: SchemaChangeEventWithPreSchema
    
    Describes if this event already has schema before change info.
    
    指定者:
    
    hasPreSchema 在接口中 SchemaChangeEventWithPreSchema
  - fillPreSchema
```
public void fillPreSchema(Schema oldTypeSchema)
```
    从接口复制的说明: SchemaChangeEventWithPreSchema
    
    Append schema before change info to this event.
    
    指定者:
    
    fillPreSchema 在接口中 SchemaChangeEventWithPreSchema
  - trimRedundantChanges
```
public boolean trimRedundantChanges()
```
    从接口复制的说明: SchemaChangeEventWithPreSchema
    
    Check if this event contains redundant schema change request only.
    
    指定者:
    
    trimRedundantChanges 在接口中 SchemaChangeEventWithPreSchema
  - getType
```
public SchemaChangeEventType getType()
```
    从接口复制的说明: SchemaChangeEvent
    
    Returns its SchemaChangeEventType.
    
    指定者:
    
    getType 在接口中 SchemaChangeEvent
  - copy
```
public SchemaChangeEvent copy(TableId newTableId)
```
    从接口复制的说明: SchemaChangeEvent
    
    Creates a copy of SchemaChangeEvent with new TableId.
    
    指定者:
    
    copy 在接口中 SchemaChangeEvent

类 AlterColumnTypeEvent

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

AlterColumnTypeEvent

AlterColumnTypeEvent

方法详细资料

getTypeMapping

equals

hashCode

toString

tableId

getOldTypeMapping

hasPreSchema

fillPreSchema

trimRedundantChanges

getType

copy