com.android.builder.merge

Interface IncrementalFileMergerInput

All Superinterfaces:

OpenableCloseable

All Known Implementing Classes:

DelegateIncrementalFileMergerInput, FilterIncrementalFileMergerInput, LazyIncrementalFileMergerInput, RenameIncrementalFileMergerInput

public interface IncrementalFileMergerInput
extends OpenableCloseable

Input for an incremental merge operation (see IncrementalFileMerger.merge(java.util.List, IncrementalFileMergerOutput, IncrementalFileMergerState).

An input represents a relative tree and a set of changed paths. Note that deleted paths are reported in the changes, although they are no longer part of the relative tree because, well, they were deleted :)

The input contains both the updated relative files (see getUpdatedPaths()) and the current set of relative files (see getAllPaths().

Each IncrementalFileMergerInput is identified by a name and a contains a set of updates on RelativeFile. These are usually obtained using the methods from IncrementalRelativeFileSets.

The input is responsible for reading input files given their paths to the input. This makes the actual source of the data invisible to the user.

Because not all methods are necessarily needed for every merge operation, it is recommended to use LazyIncrementalFileMergerInput as implementation.

Method Summary

Modifier and Type	Method and Description
com.google.common.collect.ImmutableSet<java.lang.String>	getAllPaths() Obtains all OS-independent paths of all files that in this input, regardless of being changed or not.
com.android.ide.common.resources.FileStatus	getFileStatus(java.lang.String path) Obtains the status of a path in this input.
java.lang.String	getName() Obtains the name of this input.
com.google.common.collect.ImmutableSet<java.lang.String>	getUpdatedPaths() Obtains all OS-independent paths of all files that were changed in this input.
java.io.InputStream	openPath(java.lang.String path) Opens a path for reading.

Methods inherited from interface com.android.builder.merge.OpenableCloseable

close, open

Method Detail

getUpdatedPaths

@NonNull
com.google.common.collect.ImmutableSet<java.lang.String> getUpdatedPaths()

Obtains all OS-independent paths of all files that were changed in this input.

Returns:

the paths, may be empty if no paths were changed

getAllPaths

@NonNull
com.google.common.collect.ImmutableSet<java.lang.String> getAllPaths()

Obtains all OS-independent paths of all files that in this input, regardless of being changed or not.

Returns:

the paths, may be empty if the relative tree of this input is empty

getName

@NonNull
java.lang.String getName()

Obtains the name of this input.

Returns:

the name

getFileStatus

@Nullable
com.android.ide.common.resources.FileStatus getFileStatus(@NonNull
                                                                    java.lang.String path)

Obtains the status of a path in this input.

Parameters:

path - the OS-independent path; the path may or not exist in the input

Returns:

the status of the path or null if the path does not exist in the input or if the path has not been changed; null is returned if and only if !getUpdatedPaths().contains(path)

openPath

@NonNull
java.io.InputStream openPath(@NonNull
                                      java.lang.String path)

Opens a path for reading. This method should only be called when the input is open.

Parameters:

path - the path

Returns:

the input stream that should be closed by the caller before OpenableCloseable.close() is called