ESDelete.ESDeleteManager

Module ESDelete :: Class ESDeleteManager

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Class ESDeleteManager

ESFileTypes --+    
              |    
    SQLUtil --+    
              |    
         ESInit --+
                  |
                 ESDeleteManager

ESDeleteManager responsible for deleting entries in EventStore

Method Summary
	`__init__(self, db, dbType, logFile)` Initialize database pointer, cursor, db type (MySQL or SQLite).
	`deleteGrade(self, grade, timeS)` 'Delete' given grade/timeS in EventStore.
	`doDelete(self, dict, table)` Remove entries in KeyFile and Location tables.
	`formDict(self, tup)` Form a dictionary dict[id]=runList where id is file id
	`removeElementFromDict(self, dict, minR, maxR)` Remove element from dict[id]=runList
Inherited from ESFileTypes
integer	`allow(self, type)` Check if given file type is allowed in EventStore.
integer	`allowToInject(self, type)` Check if given file type is allowed for injection in EventStore.
list	`esFileTypes(self)` Return a list of known file types supported in EventStore.
list	`esInjectionFileTypes(self)` Return a list of known file types supported in EventStore which allowed for injection.
integer	`isDatType(self, iFileType)` Check if given file type is data file.
integer	`isKeyType(self, iFileType)` Check if given file type is index file.
integer	`isLocType(self, iFileType)` Check if given file type is location file.
Inherited from SQLUtil
	`close(self)` Close cursor and db connector
	`commit(self)` Explicit commit
	`createTables(self, table)` Create table(s) in EventStore database.
	`dropTable(self, table)` Drop table in EventStore
	`endTxn(self, msg)` Update EventStore db log and invoke COMMIT transaction.
	`fetchAll(self, query)` Update a EventStore log and retrieve all rows for given query
	`fetchOne(self, query)` Update a EventStore log and retrieve one row for given query
	`findFileForRun(self, run, time)` Find location of the data file holding given run
	`getAllParents(self, childName)` Get all parents for given child name
	`getIsolationLevel(self)` Get isolation level of SQLite DB
	`getLastId(self, table)` Get last autoincemented id for given table
	`getTableNames(self)` Return a list of table names in EventStore DB
	`getTables(self)` Return list of tables from DB
	`getTableSchema(self, tableName)` Return EventStore table schema
	`idx(self, name)`
	`lockTables(self, tableName)` Lock tables in EventStore.
	`makeESQuery(self, timeStamp)` Return the following dictionary: dict[time]=[(grade,minR,maxR,svName)]
	`printDBContent(self, table)` Print content of given table in EventStore DB
	`printESInfo(self, timeStamp)` Dump EventStore DB content in user readable format.
	`printRuns(self, minR, maxR)` Print list of runs for given run range
	`rollback(self)` Rollback transaction
	`setCommitFlag(self, flag)` Set flag which will inform underlying DB what to do with transaction commits.
	`setIsolationLevel(self, level)` Set isolation level for internal DB (necessary to perform SQLite transactions.
	`setVerboseLevel(self, verbose)` Set verbose level, 0 low, 1 is high.
	`showDepend(self, childName)` Print all dependencies for given data version name.
	`startTxn(self, msg)` Update EventStore db log and invoke BEGIN transaction.
	`unlockTables(self)` Unlock all locked tables in EventStore
	`updateDBAndLog(self, iQuery, cQuery)`
	`updateLog(self, iQuery, cQuery)` Update EventStore log and execute given query.
	`writeToLog(self, msg)` Update EventStore db log with time/pid/msg signature

Method Details

init(self, db, dbType, logFile)
(Constructor)

Initialize database pointer, cursor, db type (MySQL or SQLite). Retrieve information about table names from underlying DB.

Overrides:: es_init.ESInit.__init__ (inherited documentation)

deleteGrade(self, grade, timeS)

'Delete' given grade/timeS in EventStore. Information about such grade is still available but its state is marked as removed and its information moved into OrphanFile table.

doDelete(self, dict, table)

Remove entries in KeyFile and Location tables. When it's done remove physically file from the system.

formDict(self, tup)

Form a dictionary dict[id]=runList where id is file id

removeElementFromDict(self, dict, minR, maxR)

Remove element from dict[id]=runList

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