com.googlecode.fascinator.indexer
Class SolrIndexer

java.lang.Object
  com.googlecode.fascinator.indexer.SolrIndexer

All Implemented Interfaces:

Indexer, Plugin

public class SolrIndexer
extends Object
implements Indexer

This plugin provides indexing services for DigitalObjects and payloads in The Fascinator through Apache Solr.

Configuration

Standard configuration table:

Option	Description	Required	Default
uri	The URI of the Solr service	Yes	http://localhost:9997/solr/fascinator
coreName	The name of the indexer	Yes	fascinator
embedded	If false, Solr is started as a separate web application. If true, Solr will start in embedded mode which is non-HTTP accessible. Note: that the current version of Solr (1.4) has bugs when running as embedded, version 1.3 is more stable, so it's recommended to keep this option set to false.	Yes	false

Examples

1. Using Internal authentication plugin in The Fascinator

            "solr": {
                "uri": "http://localhost:9997/solr/fascinator",
                "coreName": "fascinator",
                "autocommit": false,
                "embedded": true
            }
    

Rule file

The Solr Indexer takes a rules file to assist it in indexing various content. This allows you to set up indexing rules for individual harvests. For example, harvests that are transformed by the Aperture plugin need indexing on RDF whereas OAI-PMH Harvests probably don't need transforming and the XML DC is indexed.

Wiki Link

None

Author:

Greg Pendlebury

Constructor Summary

SolrIndexer()

Method Summary

void	annotate(String oid, String pid) Index an annotation
void	annotateRemove(String oid) Remove all annotations from the index against an object
void	annotateRemove(String oid, String annoId) Remove the specified annotation from the index
void	annotateSearch(SearchRequest request, OutputStream response) Search for annotations and return the result to the provided stream
void	commit() Call a manual commit against the index
String	getId() Get the ID of the plugin
String	getName() Get the name of the plugin
PluginDescription	getPluginDetails() Gets a PluginDescription object relating to this plugin.
Storage	getStorage() Return a reference to this plugins instantiated storage layer
void	index(DigitalObject object, Payload payload) Index a specific payload
void	index(String oid) Index an object and all of its payloads
void	index(String oid, String pid) Index a specific payload
void	init(File jsonFile) Initialize the plugin
void	init(String jsonString) Initialize the plugin
void	remove(String oid) Remove the specified object from the index
void	remove(String oid, String pid) Remove the specified payload from the index
void	search(SearchRequest request, OutputStream response) Perform a Solr search and stream the results into the provided output
void	search(SearchRequest request, OutputStream response, String format) Perform a Solr search and stream the results into the provided output format
void	searchByIndex(SearchRequest request, OutputStream response, String indexName) Search the specified solr index (core) and return the result to the provided stream
void	sendIndexToBuffer(String index, Map<String,List<String>> fields) Send the document to buffer directly
void	setCustomParam(String property, String value) Set a value in the custom parameters of the indexer.
void	shutdown() Shutdown the plugin

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SolrIndexer

public SolrIndexer()

Method Detail

getId

public String getId()

Get the ID of the plugin

Specified by:

getId in interface Plugin

Returns:

String : The ID of this plugin

getName

public String getName()

Get the name of the plugin

Specified by:

getName in interface Plugin

Returns:

String : The name of this plugin

getPluginDetails

public PluginDescription getPluginDetails()

Gets a PluginDescription object relating to this plugin.

Specified by:

getPluginDetails in interface Plugin

Returns:

a PluginDescription

init

public void init(String jsonString)
          throws IndexerException

Initialize the plugin

Specified by:

init in interface Plugin

Parameters:

jsonString - The JSON configuration to use as a string

Throws:

IndexerException - if errors occur during initialization

init

public void init(File jsonFile)
          throws IndexerException

Initialize the plugin

Specified by:

init in interface Plugin

Parameters:

jsonFile - A file containing the JSON configuration

Throws:

IndexerException - if errors occur during initialization

setCustomParam

public void setCustomParam(String property,
                           String value)

Set a value in the custom parameters of the indexer.

Parameters:

property - : The index to use

value - : The value to store

shutdown

public void shutdown()
              throws PluginException

Shutdown the plugin

Specified by:

shutdown in interface Plugin

Throws:

PluginException - if any errors occur during shutdown

getStorage

public Storage getStorage()

Return a reference to this plugins instantiated storage layer

Returns:

Storage : the storage API being used

search

public void search(SearchRequest request,
                   OutputStream response)
            throws IndexerException

Perform a Solr search and stream the results into the provided output

Specified by:

search in interface Indexer

Parameters:

request - : A prepared SearchRequest object

response - : The OutputStream to send results to

Throws:

IndexerException - if there were errors during the search

search

public void search(SearchRequest request,
                   OutputStream response,
                   String format)
            throws IndexerException

Perform a Solr search and stream the results into the provided output format

Specified by:

search in interface Indexer

Parameters:

request - : A prepared SearchRequest object

response - : The OutputStream to send results to

format - : Output format - passed directly to SOlr as the "wt" parameter

Throws:

IndexerException - if there were errors during the search

remove

public void remove(String oid)
            throws IndexerException

Remove the specified object from the index

Specified by:

remove in interface Indexer

Parameters:

oid - : The identifier of the object to remove

Throws:

IndexerException - if there were errors during removal

remove

public void remove(String oid,
                   String pid)
            throws IndexerException

Remove the specified payload from the index

Specified by:

remove in interface Indexer

Parameters:

oid - : The identifier of the payload's object

pid - : The identifier of the payload to remove

Throws:

IndexerException - if there were errors during removal

annotateRemove

public void annotateRemove(String oid)
                    throws IndexerException

Remove all annotations from the index against an object

Specified by:

annotateRemove in interface Indexer

Parameters:

oid - : The identifier of the object

Throws:

IndexerException - if there were errors during removal

annotateRemove

public void annotateRemove(String oid,
                           String annoId)
                    throws IndexerException

Remove the specified annotation from the index

Specified by:

annotateRemove in interface Indexer

Parameters:

oid - : The identifier of the object

annoId - : The identifier of the annotation

Throws:

IndexerException - if there were errors during removal

index

public void index(String oid)
           throws IndexerException

Index an object and all of its payloads

Specified by:

index in interface Indexer

Parameters:

oid - : The identifier of the object

Throws:

IndexerException - if there were errors during indexing

index

public void index(String oid,
                  String pid)
           throws IndexerException

Index a specific payload

Specified by:

index in interface Indexer

Parameters:

oid - : The identifier of the payload's object

pid - : The identifier of the payload

Throws:

IndexerException - if there were errors during indexing

index

public void index(DigitalObject object,
                  Payload payload)
           throws IndexerException

Index a specific payload

Parameters:

object - : The payload's object

pid - : The payload

Throws:

IndexerException - if there were errors during indexing

commit

public void commit()

Call a manual commit against the index

Specified by:

commit in interface Indexer

sendIndexToBuffer

public void sendIndexToBuffer(String index,
                              Map<String,List<String>> fields)

Send the document to buffer directly

Parameters:

index -

fields -

annotate

public void annotate(String oid,
                     String pid)
              throws IndexerException

Index an annotation

Specified by:

annotate in interface Indexer

Parameters:

oid - : The identifier of the annotation's object

pid - : The identifier of the annotation

Throws:

IndexerException - if there were errors during indexing

searchByIndex

public void searchByIndex(SearchRequest request,
                          OutputStream response,
                          String indexName)
                   throws IndexerException

Search the specified solr index (core) and return the result to the provided stream

Specified by:

searchByIndex in interface Indexer

Parameters:

request - : The SearchRequest object

response - : The OutputStream to send responses to

indexName - : The name of the index

Throws:

IndexerException - if there were errors during indexing

annotateSearch

public void annotateSearch(SearchRequest request,
                           OutputStream response)
                    throws IndexerException

Search for annotations and return the result to the provided stream

Specified by:

annotateSearch in interface Indexer

Parameters:

request - : The SearchRequest object

response - : The OutputStream to send responses to

Throws:

IndexerException - if there were errors during indexing