org.apache.solr.handler.dataimport
Class DataSource<T>

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

DataSource()

Method Summary

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.