org.fcrepo.server.journal.readerwriter.multifile

Class MultiFileJournalReader

java.lang.Object

org.fcrepo.server.journal.xmlhelpers.AbstractXmlReader

org.fcrepo.server.journal.JournalReader

org.fcrepo.server.journal.readerwriter.multifile.MultiFileJournalReader

All Implemented Interfaces:

JournalConstants, MultiFileJournalConstants

Direct Known Subclasses:

LockingFollowingJournalReader, MultiFileFollowingJournalReader

public class MultiFileJournalReader
extends JournalReader
implements MultiFileJournalConstants

A JournalReader implementation for "recovering", when using a MultiFileJournalWriter, or the equivalent.

The recovery is complete when the all of the files in the journal directory have been processed and moved to the archive directory.

Author:

Jim Blake

Field Summary

Fields

Modifier and Type	Field and Description
protected org.fcrepo.server.journal.readerwriter.multifile.JournalInputFile	currentFile
protected boolean	open

Fields inherited from class org.fcrepo.server.journal.JournalReader

parameters, recoveryLog, role, server

Fields inherited from interface org.fcrepo.server.journal.readerwriter.multifile.MultiFileJournalConstants

DEFAULT_FOLLOW_POLLING_INTERVAL, PARAMETER_ARCHIVE_DIRECTORY, PARAMETER_FOLLOW_POLLING_INTERVAL, PARAMETER_JOURNAL_DIRECTORY, PARAMETER_LOCK_ACCEPTED_FILENAME, PARAMETER_LOCK_REQUESTED_FILENAME, PARAMETER_PAUSE_BEFORE_POLLING

Fields inherited from interface org.fcrepo.server.journal.JournalConstants

ARGUMENT_NAME_ALT_IDS, ARGUMENT_NAME_CHECKSUM, ARGUMENT_NAME_CHECKSUM_TYPE, ARGUMENT_NAME_CONTEXT, ARGUMENT_NAME_CONTROL_GROUP, ARGUMENT_NAME_DATATYPE, ARGUMENT_NAME_DISSEMINATOR_ID, ARGUMENT_NAME_DISSEMINATOR_LABEL, ARGUMENT_NAME_DISSEMINATOR_STATE, ARGUMENT_NAME_DS_CONTENT, ARGUMENT_NAME_DS_ID, ARGUMENT_NAME_DS_LABEL, ARGUMENT_NAME_DS_LOCATION, ARGUMENT_NAME_DS_STATE, ARGUMENT_NAME_ENCODING, ARGUMENT_NAME_END_DATE, ARGUMENT_NAME_FORCE, ARGUMENT_NAME_FORMAT, ARGUMENT_NAME_FORMAT_URI, ARGUMENT_NAME_IN, ARGUMENT_NAME_IS_LITERAL, ARGUMENT_NAME_LABEL, ARGUMENT_NAME_LAST_MODIFIED_DATE, ARGUMENT_NAME_LOCATION, ARGUMENT_NAME_LOG_MESSAGE, ARGUMENT_NAME_MIME_TYPE, ARGUMENT_NAME_NAMESPACE, ARGUMENT_NAME_NEW_PID, ARGUMENT_NAME_NUM_PIDS, ARGUMENT_NAME_OBJECT, ARGUMENT_NAME_OWNERID, ARGUMENT_NAME_PID, ARGUMENT_NAME_RELATIONSHIP, ARGUMENT_NAME_SERIALIZATION, ARGUMENT_NAME_START_DATE, ARGUMENT_NAME_STATE, ARGUMENT_NAME_VERSION_DATE, ARGUMENT_NAME_VERSIONABLE, ARGUMENT_TYPE_BINDING_MAP, ARGUMENT_TYPE_BOOLEAN, ARGUMENT_TYPE_DATE, ARGUMENT_TYPE_INTEGER, ARGUMENT_TYPE_NULL, ARGUMENT_TYPE_STREAM, ARGUMENT_TYPE_STRING, ARGUMENT_TYPE_STRINGARRAY, CONTEXT_MAPNAME_ACTION, CONTEXT_MAPNAME_ENVIRONMENT, CONTEXT_MAPNAME_RECOVERY, CONTEXT_MAPNAME_RESOURCE, CONTEXT_MAPNAME_SUBJECT, DEFAULT_AGE_LIMIT, DEFAULT_FILENAME_PREFIX, DEFAULT_SIZE_LIMIT, DOCUMENT_ENCODING, DOCUMENT_VERSION, FORMAT_JOURNAL_FILENAME_TIMESTAMP, METHOD_ADD_DATASTREAM, METHOD_ADD_DISSEMINATOR, METHOD_ADD_RELATIONSHIP, METHOD_GET_NEXT_PID, METHOD_INGEST, METHOD_MODIFY_DATASTREAM_BY_REFERENCE, METHOD_MODIFY_DATASTREAM_BY_VALUE, METHOD_MODIFY_DISSEMINATOR, METHOD_MODIFY_OBJECT, METHOD_PURGE_DATASTREAM, METHOD_PURGE_DISSEMINATOR, METHOD_PURGE_OBJECT, METHOD_PURGE_RELATIONSHIP, METHOD_PUT_TEMP_STREAM, METHOD_SET_DATASTREAM_STATE, METHOD_SET_DATASTREAM_VERSIONABLE, METHOD_SET_DISSEMINATOR_STATE, PARAMETER_IGNORE_HASH, PARAMETER_JOURNAL_FILE_AGE_LIMIT, PARAMETER_JOURNAL_FILE_SIZE_LIMIT, PARAMETER_JOURNAL_FILENAME_PREFIX, PARAMETER_JOURNAL_MODE, PARAMETER_JOURNAL_READER_CLASSNAME, PARAMETER_JOURNAL_RECOVERY_LOG_CLASSNAME, PARAMETER_JOURNAL_WRITER_CLASSNAME, PARAMETER_RECOVERY_LOG_FILENAME, PARAMETER_RECOVERY_LOG_LEVEL, PASSWORD_CIPHER_TYPE, QNAME_ATTR_BIND_KEY_NAME, QNAME_ATTR_BIND_LABEL, QNAME_ATTR_CLIENT_IP, QNAME_ATTR_DATASTREAM_ID, QNAME_ATTR_DS_BIND_MAP_ID, QNAME_ATTR_DS_BIND_MAP_LABEL, QNAME_ATTR_DS_BIND_MECHANISM_PID, QNAME_ATTR_LOGIN_ID, QNAME_ATTR_METHOD, QNAME_ATTR_NAME, QNAME_ATTR_PASSWORD_TYPE, QNAME_ATTR_REPOSITORY_HASH, QNAME_ATTR_SEQ_NO, QNAME_ATTR_STATE, QNAME_ATTR_TIMESTAMP, QNAME_ATTR_TYPE, QNAME_ATTR_USERID, QNAME_TAG_ARGUMENT, QNAME_TAG_ARRAYELEMENT, QNAME_TAG_CONTEXT, QNAME_TAG_DS_BINDING, QNAME_TAG_DS_BINDING_MAP, QNAME_TAG_JOURNAL, QNAME_TAG_JOURNAL_ENTRY, QNAME_TAG_MULTI_VALUE_MAP, QNAME_TAG_MULTI_VALUE_MAP_KEY, QNAME_TAG_MULTI_VALUE_MAP_VALUE, QNAME_TAG_NOOP, QNAME_TAG_NOW, QNAME_TAG_PASSWORD, SYSTEM_PROPERTY_PREFIX, TIMESTAMP_FORMAT, VALUE_FALSE, VALUE_JOURNAL_MODE_NORMAL, VALUE_JOURNAL_MODE_RECOVER, VALUE_RECOVERY_LOG_LEVEL_HIGH, VALUE_RECOVERY_LOG_LEVEL_LOW, VALUE_RECOVERY_LOG_LEVEL_MEDIUM, VALUE_TRUE

Constructor Summary

Constructors

Constructor and Description
MultiFileJournalReader(Map<String,String> parameters, String role, JournalRecoveryLog recoveryLog, ServerInterface server)

Method Summary

Methods

Modifier and Type	Method and Description
protected org.fcrepo.server.journal.readerwriter.multifile.JournalInputFile	openNextFile() Look in the directory for files that match the prefix.
ConsumerJournalEntry	readJournalEntry() Concrete sub-classes should insure that their XMLEventReader is positioned at the beginning of a JournalEntry, and call JournalReader.readJournalEntry(XMLEventReader).
void	shutdown() Concrete sub-classes should probably synchronize this method, since it can be called either from the JournalConsumerThread or from the Server.
String	toString()

Methods inherited from class org.fcrepo.server.journal.JournalReader

checkRepositoryHash, getInstance, readJournalEntry

Methods inherited from class org.fcrepo.server.journal.xmlhelpers.AbstractXmlReader

advancePastWhitespace, getNotCharactersException, getNotEndTagException, getNotNextMemberOrEndOfGroupException, getNotStartTagException, getOptionalAttributeValue, getRequiredAttributeValue, isEndTagEvent, isStartTagEvent, readCharactersUntilEndTag, readStartTag

Methods inherited from class java.lang.Object

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

Field Detail

currentFile

protected org.fcrepo.server.journal.readerwriter.multifile.JournalInputFile currentFile

open

protected boolean open

Constructor Detail

MultiFileJournalReader

public MultiFileJournalReader(Map<String,String> parameters,
                      String role,
                      JournalRecoveryLog recoveryLog,
                      ServerInterface server)
                       throws JournalException

Throws:

JournalException

Method Detail

shutdown

public void shutdown()
              throws JournalException

Description copied from class: JournalReader

Concrete sub-classes should probably synchronize this method, since it can be called either from the JournalConsumerThread or from the Server.

Specified by:

shutdown in class JournalReader

Throws:

JournalException

readJournalEntry

public ConsumerJournalEntry readJournalEntry()
                                      throws JournalException,
                                             XMLStreamException

Description copied from class: JournalReader

Concrete sub-classes should insure that their XMLEventReader is positioned at the beginning of a JournalEntry, and call JournalReader.readJournalEntry(XMLEventReader). It is likely that this method should be synchronized also, since it could be called from JournalConsumerThread when the server calls JournalReader.shutdown()

Specified by:

readJournalEntry in class JournalReader

Throws:

JournalException

XMLStreamException

openNextFile

protected org.fcrepo.server.journal.readerwriter.multifile.JournalInputFile openNextFile()
                                                                                  throws JournalException

Look in the directory for files that match the prefix. If there are none, leave with currentFile still null. If we find one, advance into it.

Throws:

JournalException

toString

public String toString()

Overrides:

toString in class Object