Package adams.flow.source

Class AbstractSimpleDbSource

java.lang.Object

adams.core.logging.LoggingObject

adams.core.logging.CustomLoggingLevelObject

adams.core.option.AbstractOptionHandler

adams.flow.core.AbstractActor

adams.flow.source.AbstractSource

adams.flow.source.AbstractSimpleSource

adams.flow.source.AbstractSimpleDbSource

All Implemented Interfaces:

AdditionalInformationHandler, CleanUpHandler, Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, QuickInfoSupporter, ShallowCopySupporter<Actor>, SizeOfHandler, Stoppable, StoppableWithFeedback, VariablesInspectionHandler, DatabaseConnectionUser, VariableChangeListener, Actor, ErrorHandler, OutputProducer, Serializable, Comparable

Direct Known Subclasses:

AbstractDatabaseMetaData

public abstract class AbstractSimpleDbSource
extends AbstractSimpleSource
implements DatabaseConnectionUser

Ancestor for simple sources that use the database.

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected AbstractDatabaseConnection	m_DatabaseConnection	the database connection.

Fields inherited from class adams.flow.source.AbstractSimpleSource

m_OutputToken

Fields inherited from class adams.flow.core.AbstractActor

m_Annotations, m_BackupState, m_DetectedObjectVariables, m_DetectedVariables, m_ErrorHandler, m_Executed, m_Executing, m_ExecutionListeningSupporter, m_FullName, m_LoggingPrefix, m_Name, m_Parent, m_ScopeHandler, m_Self, m_Silent, m_Skip, m_StopFlowOnError, m_StopMessage, m_Stopped, m_StorageHandler, m_VariablesUpdated

Fields inherited from class adams.core.option.AbstractOptionHandler

m_OptionManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Fields inherited from interface adams.flow.core.Actor

FILE_EXTENSION, FILE_EXTENSION_GZ

Constructor Summary

Constructors

Constructor	Description
AbstractSimpleDbSource()

Method Summary

Modifier and Type	Method	Description
protected String	doExecute()	Executes the flow item.
protected abstract AbstractDatabaseConnection	getDatabaseConnection()	Determines the database connection in the flow.
protected abstract AbstractDatabaseConnection	getDefaultDatabaseConnection()	Returns the default database connection.
protected void	initialize()	Initializes the members.
protected abstract String	queryDatabase()	Performs the actual database query.
protected String	setUpDatabaseConnection()	Configures the database connection if necessary.
void	wrapUp()	Cleans up after the execution has finished.

Methods inherited from class adams.flow.source.AbstractSimpleSource

hasPendingOutput, output, reset

Methods inherited from class adams.flow.core.AbstractActor

annotationsTipText, backupState, canInspectOptions, canPerformSetUpCheck, cleanUp, compareTo, configureLogger, defineOptions, destroy, equals, execute, finalUpdateVariables, findVariables, findVariables, forceVariables, forCommandLine, forName, forName, getAdditionalInformation, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowActors, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getQuickInfo, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, handleException, hasErrorHandler, hasStopMessage, index, isBackedUp, isExecuted, isExecuting, isFinished, isHeadless, isStopped, nameTipText, performSetUpChecks, performVariableChecks, postExecute, preExecute, pruneBackup, pruneBackup, restoreState, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, silentTipText, sizeOf, skipTipText, stopExecution, stopExecution, stopFlowOnErrorTipText, updateDetectedVariables, updatePrefix, updateVariables, variableChanged

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, finishInit, getDefaultLoggingLevel, getOptionManager, globalInfo, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine, toString

Methods inherited from class adams.core.logging.LoggingObject

getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.flow.core.Actor

cleanUp, compareTo, destroy, equals, execute, findVariables, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getQuickInfo, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, hasErrorHandler, hasStopMessage, index, isExecuted, isFinished, isHeadless, isStopped, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, sizeOf, stopExecution, stopExecution, toCommandLine, variableChanged

Methods inherited from interface adams.core.AdditionalInformationHandler

getAdditionalInformation

Methods inherited from interface adams.core.logging.LoggingLevelHandler

getLoggingLevel, setLoggingLevel

Methods inherited from interface adams.core.logging.LoggingSupporter

getLogger, isLoggingEnabled

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, defineOptions, getOptionManager

Methods inherited from interface adams.flow.core.OutputProducer

generates

Methods inherited from interface adams.core.VariablesInspectionHandler

canInspectOptions

Field Detail

m_DatabaseConnection

protected AbstractDatabaseConnection m_DatabaseConnection

the database connection.

Constructor Detail

AbstractSimpleDbSource

public AbstractSimpleDbSource()

Method Detail

initialize

protected void initialize()

Initializes the members.

Overrides:

initialize in class AbstractSimpleSource

getDefaultDatabaseConnection

protected abstract AbstractDatabaseConnection getDefaultDatabaseConnection()

Returns the default database connection.

Returns:

the default database connection

getDatabaseConnection

protected abstract AbstractDatabaseConnection getDatabaseConnection()

Determines the database connection in the flow.

Returns:

the database connection to use

setUpDatabaseConnection

protected String setUpDatabaseConnection()

Configures the database connection if necessary.

Returns:

null if successful, otherwise error message

queryDatabase

protected abstract String queryDatabase()

Performs the actual database query.

Returns:

null if everything is fine, otherwise error message

doExecute

protected String doExecute()

Executes the flow item.

Specified by:

doExecute in class AbstractActor

Returns:

null if everything is fine, otherwise error message

wrapUp

public void wrapUp()

Cleans up after the execution has finished. Graphical output is left untouched.

Specified by:

wrapUp in interface Actor

Overrides:

wrapUp in class AbstractActor