com.alipay.sofa.ark.loader.jar

类 JarFileEntries

java.lang.Object

com.alipay.sofa.ark.loader.jar.JarFileEntries

所有已实现的接口:

CentralDirectoryVisitor, Iterable<JarEntry>

public class JarFileEntries
extends Object
implements CentralDirectoryVisitor, Iterable<JarEntry>

Provides access to entries from a JarFile. In order to reduce memory consumption entry details are stored using int arrays. The hashCodes array stores the hash code of the entry name, the centralDirectoryOffsets provides the offset to the central directory record and positions provides the original order position of the entry. The arrays are stored in hashCode order so that a binary search can be used to find a name.

A typical Spring Boot application will have somewhere in the region of 10,500 entries which should consume about 122K.

作者:

Phillip Webb

字段概要

字段

限定符和类型	字段和说明
protected static int	ENTRY_CACHE_SIZE

构造器概要

构造器

构造器和说明
JarFileEntries(JarFile jarFile, JarEntryFilter filter)

方法概要

方法

限定符和类型	方法和说明
void	clearCache()
boolean	containsEntry(String name)
JarEntry	getEntry(String name)
RandomAccessData	getEntryData(String name)
InputStream	getInputStream(com.alipay.sofa.ark.loader.jar.FileHeader entry, RandomAccessData.ResourceAccess access)
InputStream	getInputStream(String name, RandomAccessData.ResourceAccess access)
Iterator<JarEntry>	iterator()
void	visitEnd()
void	visitFileHeader(CentralDirectoryFileHeader fileHeader, int dataOffset)
void	visitStart(CentralDirectoryEndRecord endRecord, RandomAccessData centralDirectoryData)

从类继承的方法 java.lang.Object

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

字段详细资料

ENTRY_CACHE_SIZE

protected static final int ENTRY_CACHE_SIZE

另请参阅:

常量字段值

构造器详细资料

JarFileEntries

public JarFileEntries(JarFile jarFile,
              JarEntryFilter filter)

方法详细资料

visitStart

public void visitStart(CentralDirectoryEndRecord endRecord,
              RandomAccessData centralDirectoryData)

指定者:

visitStart 在接口中 CentralDirectoryVisitor

visitFileHeader

public void visitFileHeader(CentralDirectoryFileHeader fileHeader,
                   int dataOffset)

指定者:

visitFileHeader 在接口中 CentralDirectoryVisitor

visitEnd

public void visitEnd()

指定者:

visitEnd 在接口中 CentralDirectoryVisitor

iterator

public Iterator<JarEntry> iterator()

指定者:

iterator 在接口中 Iterable<JarEntry>

containsEntry

public boolean containsEntry(String name)

getEntry

public JarEntry getEntry(String name)

getInputStream

public InputStream getInputStream(String name,
                         RandomAccessData.ResourceAccess access)
                           throws IOException

抛出:

IOException

getInputStream

public InputStream getInputStream(com.alipay.sofa.ark.loader.jar.FileHeader entry,
                         RandomAccessData.ResourceAccess access)
                           throws IOException

抛出:

IOException

getEntryData

public RandomAccessData getEntryData(String name)
                              throws IOException

抛出:

IOException

clearCache

public void clearCache()