Package org.eclipse.jgit.blame

Class BlameResult

java.lang.Object

org.eclipse.jgit.blame.BlameResult

public class BlameResult
extends Object

Collects line annotations for inspection by applications.

A result is usually updated incrementally as the BlameGenerator digs back further through history. Applications that want to lay annotations down text to the original source file in a viewer may find the BlameResult structure an easy way to acquire the information, at the expense of keeping tables in memory tracking every line of the result file.

This class is not thread-safe.

During blame processing there are two files involved:

• result - The file whose lines are being examined. This is the revision the user is trying to view blame/annotation information alongside of.
• source - The file that was blamed with supplying one or more lines of data into result. The source may be a different file path (due to copy or rename). Source line numbers may differ from result line numbers due to lines being added/removed in intermediate revisions.

Method Summary

Modifier and Type	Method	Description
void	computeAll()	Compute all pending information.
int	computeNext()	Compute the next available segment and return the first index.
void	computeRange(int start, int end)	Compute until the entire range has been populated.
static BlameResult	create(BlameGenerator gen)	Construct a new BlameResult for a generator.
void	discardResultContents()	Throw away the getResultContents().
RawText	getResultContents()	Get result contents
String	getResultPath()	Get result path
PersonIdent	getSourceAuthor(int idx)	Get the author that provided the specified line of the result.
RevCommit	getSourceCommit(int idx)	Get the commit that provided the specified line of the result.
PersonIdent	getSourceCommitter(int idx)	Get the committer that provided the specified line of the result.
int	getSourceLine(int idx)	Get the corresponding line number in the source file.
String	getSourcePath(int idx)	Get the file path that provided the specified line of the result.
boolean	hasSourceData(int idx)	Check if the given result line has been annotated yet.
boolean	hasSourceData(int start, int end)	Check if the given result line has been annotated yet.
int	lastLength()	Get last length
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

create

public static BlameResult create(BlameGenerator gen)
                          throws IOException

Construct a new BlameResult for a generator.

Parameters:

gen - the generator the result will consume records from.

Returns:

the new result object. null if the generator cannot find the path it starts from.

Throws:

IOException - the repository cannot be read.

getResultPath

public String getResultPath()

Get result path

Returns:

path of the file this result annotates

getResultContents

public RawText getResultContents()

Get result contents

Returns:

contents of the result file, available for display

discardResultContents

public void discardResultContents()

Throw away the getResultContents().

hasSourceData

public boolean hasSourceData(int idx)

Check if the given result line has been annotated yet.

Parameters:

idx - line to read data of, 0 based.

Returns:

true if the data has been annotated, false otherwise.

hasSourceData

public boolean hasSourceData(int start,
                             int end)

Check if the given result line has been annotated yet.

Parameters:

start - first index to examine.

end - last index to examine.

Returns:

true if the data has been annotated, false otherwise.

getSourceCommit

public RevCommit getSourceCommit(int idx)

Get the commit that provided the specified line of the result.

The source commit may be null if the line was blamed to an uncommitted revision, such as the working tree copy, or during a reverse blame if the line survives to the end revision (e.g. the branch tip).

Parameters:

idx - line to read data of, 0 based.

Returns:

commit that provided line idx. May be null.

getSourceAuthor

public PersonIdent getSourceAuthor(int idx)

Get the author that provided the specified line of the result.

Parameters:

idx - line to read data of, 0 based.

Returns:

author that provided line idx. May be null.

getSourceCommitter

public PersonIdent getSourceCommitter(int idx)

Get the committer that provided the specified line of the result.

Parameters:

idx - line to read data of, 0 based.

Returns:

committer that provided line idx. May be null.

getSourcePath

public String getSourcePath(int idx)

Get the file path that provided the specified line of the result.

Parameters:

idx - line to read data of, 0 based.

Returns:

source file path that provided line idx.

getSourceLine

public int getSourceLine(int idx)

Get the corresponding line number in the source file.

Parameters:

idx - line to read data of, 0 based.

Returns:

matching line number in the source file.

computeAll

public void computeAll()
                throws IOException

Compute all pending information.

Throws:

IOException - the repository cannot be read.

computeNext

public int computeNext()
                throws IOException

Compute the next available segment and return the first index.

Computes one segment and returns to the caller the first index that is available. After return the caller can also inspect lastLength() to determine how many lines of the result were computed.

Returns:

index that is now available. -1 if no more are available.

Throws:

IOException - the repository cannot be read.

lastLength

public int lastLength()

Get last length

Returns:

length of the last segment found by computeNext()

computeRange

public void computeRange(int start,
                         int end)
                  throws IOException

Compute until the entire range has been populated.

Parameters:

start - first index to examine (inclusive).

end - end index (exclusive).

Throws:

IOException - the repository cannot be read.

toString

public String toString()

Overrides:

toString in class Object