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jdk.tools.jlink.internal.runtimelink

public Class JimageDiffGenerator

extends Object
Class Inheritance
Imports
java.io.IOException, .InputStream, .UncheckedIOException, java.util.ArrayList, .Arrays, .HashSet, .List, .Set
Generates a delta between packaged modules (as an ImageResource) and an optimized jimage (lib/modules) as an ImageResource. The result can be serialized to a file using ResourceDiff.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static interface
JimageDiffGenerator.ImageResource

A resource used for linking.

Constructor Summary

AccessConstructor and Description
public
JimageDiffGenerator()

Method Summary

Modifier and TypeMethod and Description
private boolean

Returns:

true iff the two streams contain the same number of bytes and each byte of the streams are equal. false otherwise.
compareStreams(InputStream
The first input stream
is1, InputStream
The second input stream
is2)

Compare the contents of the two input streams (byte-by-byte).

public List<ResourceDiff>

Returns:

The list of resource differences across all modules.
generateDiff(JimageDiffGenerator.ImageResource
The ImageResource view of unmodified resources coming from packaged modules.
base, JimageDiffGenerator.ImageResource
The ImageResource view of the jlink plug-in pipeline having been applied to the resources in base.
image)

Produce a difference between packaged modules' resources (base) and the result of all plug-ins being applied on those resources (image).

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Constructor Detail

JimageDiffGeneratorback to summary
public JimageDiffGenerator()

Method Detail

compareStreamsback to summary
private boolean compareStreams(InputStream is1, InputStream is2)

Compare the contents of the two input streams (byte-by-byte).

Parameters
is1:InputStream

The first input stream

is2:InputStream

The second input stream

Returns:boolean

true iff the two streams contain the same number of bytes and each byte of the streams are equal. false otherwise.

generateDiffback to summary
public List<ResourceDiff> generateDiff(JimageDiffGenerator.ImageResource base, JimageDiffGenerator.ImageResource image) throws Exception

Produce a difference between packaged modules' resources (base) and the result of all plug-ins being applied on those resources (image).

Parameters
base:JimageDiffGenerator.ImageResource

The ImageResource view of unmodified resources coming from packaged modules.

image:JimageDiffGenerator.ImageResource

The ImageResource view of the jlink plug-in pipeline having been applied to the resources in base.

Returns:List<ResourceDiff>

The list of resource differences across all modules.

jdk.tools.jlink.internal.runtimelink back to summary

public Interface JimageDiffGenerator.ImageResource

extends AutoCloseable
Known Direct Implementers
jdk.tools.jlink.internal.runtimelink.ResourcePoolReader
Annotations
@SuppressWarnings:try
A resource used for linking. Either packaged modules or packaged modules transformed to an optimized run-time image by applying the jlink plug-in pipeline. The canonical source, the packaged modules, are being used to devise the delta to the transformed run-time image. The delta can can then be used for jlink input together *with* a prepared run-time image.

Method Summary

Modifier and TypeMethod and Description
public List<String>
getEntries()

public InputStream
getResource(String name)

public byte[]
getResourceBytes(String name)

Inherited from java.lang.AutoCloseable:
close

Method Detail

getEntriesback to summary
public List<String> getEntries()
getResourceback to summary
public InputStream getResource(String name)
getResourceBytesback to summary
public byte[] getResourceBytes(String name)