org.apache.solr.handler.dataimport

Interface DIHCache

All Superinterfaces:

Iterable<Map<String,Object>>

All Known Implementing Classes:

SortedMapBackedCache

public interface DIHCache
extends Iterable<Map<String,Object>>

A cache that allows a DIH entity's data to persist locally prior being joined to other data and/or indexed.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Map<String,Object> rec) Adds a document.
void	close() Releases resources used by this cache, if possible.
void	delete(Object key) Delete all documents associated with the given key
void	deleteAll() Delete all data from the cache,leaving the empty cache intact.
void	destroy() Closes the cache, if open.
void	flush() Persists any pending data to the cache
Iterator<Map<String,Object>>	iterator() Returns an iterator, allowing callers to iterate through the entire cache in key, then insertion, order.
Iterator<Map<String,Object>>	iterator(Object key) Returns an iterator, allowing callers to iterate through all documents that match the given key in insertion order.
void	open(Context context) Opens the cache using the specified properties.

Method Detail

open

void open(Context context)

Opens the cache using the specified properties. The Context includes any parameters needed by the cache impl. This must be called before any read/write operations are permitted.

close

void close()

Releases resources used by this cache, if possible. The cache is flushed but not destroyed.

flush

void flush()

Persists any pending data to the cache

destroy

void destroy()

Closes the cache, if open. Then removes all data, possibly removing the cache entirely from persistent storage.

add

void add(Map<String,Object> rec)

Adds a document. If a document already exists with the same key, both documents will exist in the cache, as the cache allows duplicate keys. To update a key's documents, first call delete(Object key).

iterator

Iterator<Map<String,Object>> iterator()

Returns an iterator, allowing callers to iterate through the entire cache in key, then insertion, order.

Specified by:

iterator in interface Iterable<Map<String,Object>>

iterator

Iterator<Map<String,Object>> iterator(Object key)

Returns an iterator, allowing callers to iterate through all documents that match the given key in insertion order.

delete

void delete(Object key)

Delete all documents associated with the given key

deleteAll

void deleteAll()

Delete all data from the cache,leaving the empty cache intact.