Package org.variantsync.diffdetective.analysis.strategies

Class AnalyzeAndExportIncrementally

java.lang.Object

org.variantsync.diffdetective.analysis.strategies.AnalysisStrategy

org.variantsync.diffdetective.analysis.strategies.AnalyzeAndExportIncrementally

Direct Known Subclasses:

AnalyzeAllThenExport

public class AnalyzeAndExportIncrementally
extends AnalysisStrategy

Collects the linegraph representations generated by an analysis and exports them once a certain threshold of representations has been stored. The default value is 100, meaning that a linegraph file is written for every 100 processed commits.

Author:

Paul Bittner

Field Summary

Fields

Modifier and Type	Field	Description
private int	collectedCommits
private final int	commitsToExportAtOnce
static final int	DEFAULT_NUMBER_OF_COMMITS_TO_EXPORT_AT_ONCE	Default value for the amount of commits whose linegraph representations should be exported together.
private ByteArrayOutputStream	lineGraphDestination

Fields inherited from class org.variantsync.diffdetective.analysis.strategies.AnalysisStrategy

outputPath, repo

Constructor Summary

Constructors

Constructor	Description
AnalyzeAndExportIncrementally()	Creates a new strategy with the default value of commits to export together.
AnalyzeAndExportIncrementally(int numberOfCommitsToExportAtOnce)	Creates a new strategy that collects the linegraph representations of the given amount of commits and then exports them together.

Method Summary

Modifier and Type	Method	Description
void	end()	Invoked when the analysis is done for the current repository.
private void	flush()	Appends the given linegraph string at the end of the given file.
OutputStream	onCommit(CommitDiff commit)	Invoked before a commit is analyzed.
void	start(Repository repo, Path outputPath)	Invoked when the analysis starts.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_NUMBER_OF_COMMITS_TO_EXPORT_AT_ONCE

public static final int DEFAULT_NUMBER_OF_COMMITS_TO_EXPORT_AT_ONCE

Default value for the amount of commits whose linegraph representations should be exported together.

See Also:

• Constant Field Values

commitsToExportAtOnce

private final int commitsToExportAtOnce

lineGraphDestination

private ByteArrayOutputStream lineGraphDestination

collectedCommits

private int collectedCommits

Constructor Details

AnalyzeAndExportIncrementally

public AnalyzeAndExportIncrementally(int numberOfCommitsToExportAtOnce)

Creates a new strategy that collects the linegraph representations of the given amount of commits and then exports them together.

Parameters:

numberOfCommitsToExportAtOnce - Amount of commits whose linegraph representations should be exported together.

AnalyzeAndExportIncrementally

public AnalyzeAndExportIncrementally()

Creates a new strategy with the default value of commits to export together.

See Also:

• DEFAULT_NUMBER_OF_COMMITS_TO_EXPORT_AT_ONCE
• AnalyzeAndExportIncrementally(int)

Method Details

start

public void start(Repository repo,
 Path outputPath)

Description copied from class: AnalysisStrategy

Invoked when the analysis starts.

Overrides:

start in class AnalysisStrategy

Parameters:

repo - The repository on which an analysis is performed.

outputPath - A directory to which output should be written.

onCommit

public OutputStream onCommit(CommitDiff commit)

Description copied from class: AnalysisStrategy

Invoked before a commit is analyzed. The returned line graph export destination is closed after processing the commit given by commit.

Specified by:

onCommit in class AnalysisStrategy

Parameters:

commit - The commit that was just processed.

Returns:

the line graph export destination

end

public void end()

Description copied from class: AnalysisStrategy

Invoked when the analysis is done for the current repository. The analysis might restart with another repository. In this case, AnalysisStrategy.start(org.variantsync.diffdetective.datasets.Repository, java.nio.file.Path) is invoked again.

Specified by:

end in class AnalysisStrategy

flush

private void flush()

Appends the given linegraph string at the end of the given file.