DataGeneratorMapper (Flink : 2.0-SNAPSHOT API)

java.lang.Object
- org.apache.flink.connector.datagen.table.types.DataGeneratorMapper<A,B>

All Implemented Interfaces:

Serializable, Iterator<B>, DataGenerator<B>
```
@Internal
public class DataGeneratorMapper<A,B>
extends Object
implements DataGenerator<B>
```
Utility for mapping the output of a DataGenerator.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

DataGeneratorMapper(DataGenerator<A> generator, SerializableFunction<A,B> mapper, float nullRate)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`hasNext()`
`B`	`next()`
`void`	`open(String name, FunctionInitializationContext context, RuntimeContext runtimeContext)`	Open and initialize state for `DataGenerator`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.streaming.api.functions.source.datagen.DataGenerator
snapshotState

Methods inherited from interface java.util.Iterator
forEachRemaining, remove

- Constructor Detail
  - DataGeneratorMapper
```
public DataGeneratorMapper(DataGenerator<A> generator,
                           SerializableFunction<A,B> mapper,
                           float nullRate)
```
- Method Detail
  - open
```
public void open(String name,
                 FunctionInitializationContext context,
                 RuntimeContext runtimeContext)
          throws Exception
```
    Description copied from interface: DataGenerator
    
    Open and initialize state for DataGenerator. See CheckpointedFunction.initializeState(org.apache.flink.runtime.state.FunctionInitializationContext).
    
    Specified by:
    
    open in interface DataGenerator<A>
    
    Parameters:
    
    name - The state of DataGenerator should related to this name, make sure the name of state is different.
    
    Throws:
    
    Exception
  - hasNext
```
public boolean hasNext()
```
    Specified by:
    
    hasNext in interface Iterator<A>
  - next
```
public B next()
```
    Specified by:
    
    next in interface Iterator<A>