InternalPlan (Flink : 2.0-SNAPSHOT API)

All Known Implementing Classes:

ExecNodeGraphInternalPlan
```
@Internal
public interface InternalPlan
```
Internal interface wrapping a plan. This is used in order to propagate the plan back and forth the Planner interface. The TableEnvironment wraps it in an implementation of CompiledPlan, to provide the fluent user-friendly interface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`asJsonString()`
`FlinkVersion`	`getFlinkVersion()`
`List<String>`	`getSinkIdentifiers()`	This returns an ordered list of sink identifiers, if any.
`void`	`writeToFile(File file, boolean ignoreIfExists, boolean failIfExists)`	Note that `ignoreIfExists` has precedence over `failIfExists`.

- Method Detail
  - asJsonString
```
String asJsonString()
```
    See Also:
    
    CompiledPlan.asJsonString()
  - writeToFile
```
void writeToFile(File file,
                 boolean ignoreIfExists,
                 boolean failIfExists)
```
    Note that ignoreIfExists has precedence over failIfExists.
    
    See Also:
    
    CompiledPlan.writeToFile(File, boolean)
  - getFlinkVersion
```
FlinkVersion getFlinkVersion()
```
    See Also:
    
    CompiledPlan.getFlinkVersion()
  - getSinkIdentifiers
```
List<String> getSinkIdentifiers()
```
    This returns an ordered list of sink identifiers, if any.