FlowLoader

All Known Implementing Classes:

JSONFlowLoader, LegacyFlowLoader
```
public interface FlowLoader
```
Interface to something that can load a Knowledge Flow

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getFlowFileExtension()`	Get the extension of the Knowledge Flow file format handled by this loader
`java.lang.String`	`getFlowFileExtensionDescription()`	Get a description of the flow file format handled by this loader
`Flow`	`readFlow(java.io.File flowFile)`	Load a flow from the supplied file
`Flow`	`readFlow(java.io.InputStream is)`	Load a flow from the supplied input stream
`Flow`	`readFlow(java.io.Reader r)`	Load a flow from the supplied reader
`void`	`setLog(Logger log)`	Set a log to use

- Method Detail
  - setLog
```
void setLog(Logger log)
```
    Set a log to use
    
    Parameters:
    
    log - log to use
  - getFlowFileExtension
```
java.lang.String getFlowFileExtension()
```
    Get the extension of the Knowledge Flow file format handled by this loader
    
    Returns:
    
    the flow file extension
  - getFlowFileExtensionDescription
```
java.lang.String getFlowFileExtensionDescription()
```
    Get a description of the flow file format handled by this loader
    
    Returns:
    
    a description of the file format handles
  - readFlow
```
Flow readFlow(java.io.File flowFile)
       throws WekaException
```
    Load a flow from the supplied file
    
    Parameters:
    
    flowFile - the file to load from
    
    Returns:
    
    the loaded Flow
    
    Throws:
    
    WekaException - if a problem occurs
  - readFlow
```
Flow readFlow(java.io.InputStream is)
       throws WekaException
```
    Load a flow from the supplied input stream
    
    Parameters:
    
    is - the input stream to load from
    
    Returns:
    
    the loaded Flow
    
    Throws:
    
    WekaException - if a problem occurs
  - readFlow
```
Flow readFlow(java.io.Reader r)
       throws WekaException
```
    Load a flow from the supplied reader
    
    Parameters:
    
    r - the reader to load from
    
    Returns:
    
    the loaded Flow
    
    Throws:
    
    WekaException - if a problem occurs