DataSource (Solr 8.1.0 API)

java.lang.Object
- org.apache.solr.handler.dataimport.DataSource<T>

Direct Known Subclasses:

BinContentStreamDataSource, BinFileDataSource, BinURLDataSource, ContentStreamDataSource, FieldReaderDataSource, FieldStreamDataSource, FileDataSource, JdbcDataSource, MockDataSource, URLDataSource
```
public abstract class DataSource<T>
extends Object
```
Provides data from a source with a given query.

Implementation of this abstract class must provide a default no-arg constructor

Refer to http://wiki.apache.org/solr/DataImportHandler for more details.

This API is experimental and may change in the future.

Since:

solr 1.3

Constructor Summary

Constructors
Constructor Description

DataSource()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract void`	`close()`	Cleans up resources of this DataSource after use.
`abstract T`	`getData(String query)`	Get records for the given query.The return type depends on the implementation .
`abstract void`	`init(Context context, Properties initProps)`	Initializes the DataSource with the `Context` and initialization properties.

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

- Constructor Detail
  - DataSource
```
public DataSource()
```
- Method Detail
  - init
```
public abstract void init(Context context,
                          Properties initProps)
```
    Initializes the DataSource with the Context and initialization properties.
    This is invoked by the DataImporter after creating an instance of this class.
  - getData
```
public abstract T getData(String query)
```
    Get records for the given query.The return type depends on the implementation .
    
    Parameters:
    
    query - The query string. It can be a SQL for JdbcDataSource or a URL for HttpDataSource or a file location for FileDataSource or a custom format for your own custom DataSource.
    
    Returns:
    
    Depends on the implementation. For instance JdbcDataSource returns an Iterator<Map <String,Object>>
  - close
```
public abstract void close()
```
    Cleans up resources of this DataSource after use.