org.fcrepo.server.search
Class FieldSearchSQLImpl

java.lang.Object
  org.fcrepo.server.search.FieldSearchSQLImpl

All Implemented Interfaces:

FieldSearch

public class FieldSearchSQLImpl
extends Object
implements FieldSearch

A FieldSearch implementation that uses a relational database as a backend.

Author:

Chris Wilper

Field Summary

static String[]	DB_COLUMN_NAMES
static String[]	DB_COLUMN_NAMES_NODC

Constructor Summary

FieldSearchSQLImpl(ConnectionPool cPool, RepositoryReader repoReader, int maxResults, int maxSecondsPerSession)
Construct a FieldSearchSQLImpl that indexes DC fields.

FieldSearchSQLImpl(ConnectionPool cPool, RepositoryReader repoReader, int maxResults, int maxSecondsPerSession, boolean indexDCFields)
Construct a FieldSearchSQLImpl that indexes DC fields only if specified.

Method Summary

boolean	delete(String pid) Remove an object from the search indexes.
FieldSearchResult	findObjects(String[] resultFields, int maxResults, FieldSearchQuery query) Search across specific fields and return the desired fields.
FieldSearchResult	resumeFindObjects(String sessionToken) Resume an in-progress search across specific fields and return the desired fields.
void	update(DOReader reader) Update the search indexes with information from the provided DOReader.

Methods inherited from class java.lang.Object

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

Field Detail

DB_COLUMN_NAMES

public static String[] DB_COLUMN_NAMES

DB_COLUMN_NAMES_NODC

public static String[] DB_COLUMN_NAMES_NODC

Constructor Detail

FieldSearchSQLImpl

public FieldSearchSQLImpl(ConnectionPool cPool,
                          RepositoryReader repoReader,
                          int maxResults,
                          int maxSecondsPerSession)

Construct a FieldSearchSQLImpl that indexes DC fields.

Parameters:

cPool - the ConnectionPool with connections to the db containing the fields

repoReader - the RepositoryReader to use when getting the original values of the fields

maxResults - the maximum number of results to return at a time, regardless of what the user might request

maxSecondsPerSession - maximum number of seconds per session.

FieldSearchSQLImpl

public FieldSearchSQLImpl(ConnectionPool cPool,
                          RepositoryReader repoReader,
                          int maxResults,
                          int maxSecondsPerSession,
                          boolean indexDCFields)

Construct a FieldSearchSQLImpl that indexes DC fields only if specified.

Parameters:

cPool - the ConnectionPool with connections to the db containing the fields

repoReader - the RepositoryReader to use when getting the original values of the fields

maxResults - the maximum number of results to return at a time, regardless of what the user might request

maxSecondsPerSession - maximum number of seconds per session.

indexDCFields - whether DC field values should be examined and updated in the database. If false, queries will behave as if no values had been specified for the DC fields.

Method Detail

update

public void update(DOReader reader)
            throws ServerException

Description copied from interface: FieldSearch

Update the search indexes with information from the provided DOReader.

Specified by:

update in interface FieldSearch

Parameters:

reader - the DOReader containing all the field information for the object

Throws:

ServerException - if anything went wrong

delete

public boolean delete(String pid)
               throws ServerException

Description copied from interface: FieldSearch

Remove an object from the search indexes.

Specified by:

delete in interface FieldSearch

Parameters:

pid - the unique id of the object whose info should be removed

Returns:

true if object successfully removed; false otherwise.

Throws:

ServerException - if anything went wrong

findObjects

public FieldSearchResult findObjects(String[] resultFields,
                                     int maxResults,
                                     FieldSearchQuery query)
                              throws UnrecognizedFieldException,
                                     ObjectIntegrityException,
                                     RepositoryConfigurationException,
                                     StreamIOException,
                                     ServerException,
                                     StorageDeviceException

Description copied from interface: FieldSearch

Search across specific fields and return the desired fields.

Specified by:

findObjects in interface FieldSearch

Parameters:

resultFields - the desired fields

maxResults - the maximum number of results the client wants

query - the query

Returns:

FieldSearchResult the results

Throws:

ServerException - if anything went wrong

UnrecognizedFieldException

ObjectIntegrityException

RepositoryConfigurationException

StreamIOException

StorageDeviceException

resumeFindObjects

public FieldSearchResult resumeFindObjects(String sessionToken)
                                    throws UnrecognizedFieldException,
                                           ObjectIntegrityException,
                                           RepositoryConfigurationException,
                                           StreamIOException,
                                           ServerException,
                                           UnknownSessionTokenException

Description copied from interface: FieldSearch

Resume an in-progress search across specific fields and return the desired fields.

Specified by:

resumeFindObjects in interface FieldSearch

Parameters:

sessionToken - the token of the session in which the remaining results can be found

Returns:

FieldSearchResult the results

Throws:

ServerException - if anything went wrong

UnrecognizedFieldException

ObjectIntegrityException

RepositoryConfigurationException

StreamIOException

UnknownSessionTokenException