All Known Subinterfaces:

SplittableInputSource<T>, SystemFieldInputSource

All Known Implementing Classes:

AbstractInputSource, CloudObjectInputSource, CombiningInputSource, HttpInputSource, InlineInputSource, LocalInputSource
```
public interface InputSource
```
InputSource abstracts the storage system where input data is stored. It creates an InputSourceReader to read data from the given input source. The most common use case would be:
```
   InputSourceReader reader = inputSource.reader();
   try (CloseableIterator<InputRow> iterator = reader.read()) {
     while (iterator.hasNext()) {
       InputRow row = iterator.next();
       processRow(row);
     }
   }
 
```

Field Summary

Fields
Modifier and Type Field Description

static String TYPE_PROPERTY

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default Set<String>`	`getTypes()`	The types of input sources uses.
`boolean`	`isSplittable()`	Returns true if this inputSource can be processed in parallel using ParallelIndexSupervisorTask.
`boolean`	`needsFormat()`	Returns true if this inputSource supports different `InputFormat`s.
`InputSourceReader`	`reader(InputRowSchema inputRowSchema, InputFormat inputFormat, File temporaryDirectory)`	Creates an `InputSourceReader`.

- Field Detail
  - TYPE_PROPERTY
```
static final String TYPE_PROPERTY
```
    See Also:
    
    Constant Field Values
- Method Detail
  - isSplittable
```
boolean isSplittable()
```
    Returns true if this inputSource can be processed in parallel using ParallelIndexSupervisorTask. It must be castable to SplittableInputSource and the various SplittableInputSource methods must work as documented.
  - needsFormat
```
boolean needsFormat()
```
    Returns true if this inputSource supports different InputFormats. Some inputSources such as LocalInputSource can store files of any format. These storage types require an InputFormat to be passed so that InputSourceReader can parse data properly. However, some storage types have a fixed format. For example, druid inputSource always reads segments. These inputSources should return false for this method.
  - reader
```
InputSourceReader reader(InputRowSchema inputRowSchema,
                         @Nullable
                         InputFormat inputFormat,
                         File temporaryDirectory)
```
    Creates an InputSourceReader.
    
    Parameters:
    
    inputRowSchema - for InputRow
    
    inputFormat - to parse data. It can be null if needsFormat() = true
    
    temporaryDirectory - to store temp data. It will be cleaned up automatically once the task is finished.
  - getTypes
```
@Nonnull
default Set<String> getTypes()
```
    The types of input sources uses. A set is returned here, as some InputSource implementation allow for combining of multiple input sources.
    
    Returns:
    
    The types of input sources uses

Interface InputSource

Field Summary

Method Summary

Field Detail

TYPE_PROPERTY

Method Detail

isSplittable

needsFormat

reader

getTypes