Package org.jruby.util

Class JarCache.JarIndex

java.lang.Object

org.jruby.util.JarCache.JarIndex

Enclosing class:

JarCache

static class JarCache.JarIndex
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String,String[]>	cachedDirEntries
private final JarFile	jar
private final long	lastModified
private Long	lastModifiedExpiration
private static final String	ROOT_KEY

Constructor Summary

Constructors

Constructor	Description
JarIndex(String jarPath)

Method Summary

Modifier and Type	Method	Description
private static String	canonicalJarPath(String path)
String[]	getDirEntries(String entryPath)
InputStream	getInputStream(JarEntry entry)
JarEntry	getJarEntry(String entryPath)
private long	getLastModified(String jarPath)	Determines the last modification timestamp of a file.
boolean	isValid()
void	release()

Methods inherited from class java.lang.Object

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

Field Details

ROOT_KEY

private static final String ROOT_KEY

See Also:

• Constant Field Values

cachedDirEntries

private final Map<String,String[]> cachedDirEntries

jar

private final JarFile jar

lastModified

private final long lastModified

lastModifiedExpiration

private Long lastModifiedExpiration

Constructor Details

JarIndex

JarIndex(String jarPath)
  throws IOException

Throws:

IOException

Method Details

getLastModified

private long getLastModified(String jarPath)

Determines the last modification timestamp of a file.

NOTE: Getting the value is an expensive operation on Windows systems (see {@link <a href="https://github.com/jruby/jruby/issues/6730}"). Therefore a cached value is used with a maximum lifetime of JarCache.LAST_MODIFIED_EXPIRATION_TIME_MILLISECONDS milliseconds.

Parameters:

jarPath - The path to the JAR file.

Returns:

The last modification timestamp.

getJarEntry

public JarEntry getJarEntry(String entryPath)

getDirEntries

public String[] getDirEntries(String entryPath)

getInputStream

public InputStream getInputStream(JarEntry entry)
                           throws IOException,
IllegalStateException

Throws:

IOException

IllegalStateException

release

public void release()

isValid

public boolean isValid()

canonicalJarPath

private static String canonicalJarPath(String path)