edu.mit.ai.psg.jeva
Class ClassPathMethods

java.lang.Object
  |
  +--edu.mit.ai.psg.jeva.ClassPathMethods

public class ClassPathMethods

extends Object

ClassPathMethods.findInClassPath searches classpath to obtain an input stream from either source directories or jar files. ClassPathMethods.verifyPackageNameFromClassPath checks that a directory structure or jar file entry exists corresponding to a package name starting from some root in the class path.

Author:

CarlManning, caroma@ai.mit.edu
Copyright (c) 1997, 1998 Massachusetts Institute of Technology

Inner Class Summary

static class

ClassPathMethods.ClassPathSearchResult Class for multiple value return of with found location path, input stream, and modification date

Field Summary

static boolean

checkPackageNames

Constructor Summary

ClassPathMethods()

Method Summary

static void	clearCaches() clear caches.
static String	dotsToSeparators(String input) for example, if separator char is '/', then converts "java.io.File" to "java/io/File".
static String	dotsToSeparators(String input, char separatorChar)
static ClassPathMethods.ClassPathSearchResult	findBytecodesInClassPath(String fullClassName)
static ClassPathMethods.ClassPathSearchResult	findInClassPath(Vector classPathStrings, String fullClassName, String suffix)
static ClassPathMethods.ClassPathSearchResult	findSourceInClassPath(String fullClassName) classfilename should end in appropriate suffix, .java or .class, and should already have package "."'s converted to java.io.File.separator.
static Vector	getClassPathStrings()
static boolean	verifyPackageNameFromClassPath(String fullPackageName) Verify there is a file system directory or zipfile directory in the classpath which corresponds to the package name.
static boolean	verifyPackageNameFromClassPath(Vector classPathStrings, String fullPackageName)

Methods inherited from class java.lang.Object

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

Field Detail

checkPackageNames

public static boolean checkPackageNames

Constructor Detail

ClassPathMethods

public ClassPathMethods()

Method Detail

getClassPathStrings

public static Vector getClassPathStrings()

dotsToSeparators

public static String dotsToSeparators(String input)

for example, if separator char is '/', then converts "java.io.File" to "java/io/File". For now, assumes separator is single character: if File.separator.length() != 1, throws Error

dotsToSeparators

public static String dotsToSeparators(String input,
                                      char separatorChar)

findSourceInClassPath

public static ClassPathMethods.ClassPathSearchResult findSourceInClassPath(String fullClassName)

classfilename should end in appropriate suffix, .java or .class, and should already have package "."'s converted to java.io.File.separator. Returns an input stream so it can work on .jar files as well as directories in classpath.

Returns:

ClassPathMethods.ClassPathSearchResult to return multiple values; has fields

public String locationPath;
public InputStream stream;
public long modificationDate;

findBytecodesInClassPath

public static ClassPathMethods.ClassPathSearchResult findBytecodesInClassPath(String fullClassName)

findInClassPath

public static ClassPathMethods.ClassPathSearchResult findInClassPath(Vector classPathStrings,
                                                                     String fullClassName,
                                                                     String suffix)

verifyPackageNameFromClassPath

public static boolean verifyPackageNameFromClassPath(String fullPackageName)

Verify there is a file system directory or zipfile directory in the classpath which corresponds to the package name.

See Also:

clearCaches()

verifyPackageNameFromClassPath

public static boolean verifyPackageNameFromClassPath(Vector classPathStrings,
                                                     String fullPackageName)

clearCaches

public static void clearCaches()

clear caches. Only needed if jar files are rewritten or directory structure in classpath is changed.