Class ClasspathLibraryInfo

java.lang.Object

org.fife.rsta.ac.java.buildpath.LibraryInfo

org.fife.rsta.ac.java.buildpath.ClasspathLibraryInfo

All Implemented Interfaces:

Cloneable, Comparable<LibraryInfo>

public class ClasspathLibraryInfo
extends LibraryInfo

Information about specific classes on the current application's classpath to add to the "build path." This type of container is useful if your application ships with specific classes you want included in code completion, but you don't want to add the entire jar to the build path.

Since there is no real way to determine all classes in a package via reflection, you must explicitly enumerate all classes that are on the classpath that you want on the build path. To make this easier, you can use the ClassEnumerationReader class to read a list of classes from a plain text file or other resource.

If you're delivering the corresponding .java source files also on the classpath (i.e. you have a library "hard-coded" to be on the build path), you can set the source location to be a ClasspathSourceLocation to get the source located automatically.

Version:

1.0

See Also:

• JarLibraryInfo
• DirLibraryInfo
• ClasspathSourceLocation

Field Summary

Fields

Modifier and Type	Field	Description
private Map<String, ClassFile>	classNameToClassFile	Mapping of class names to ClassFiles.

Constructor Summary

Constructors

Constructor	Description
ClasspathLibraryInfo(String[] classes)	Constructor.
ClasspathLibraryInfo(List<String> classes)	Constructor.
ClasspathLibraryInfo(List<String> classes, SourceLocation sourceLoc)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	bulkClassFileCreationEnd()	Does any cleanup necessary after a call to LibraryInfo.bulkClassFileCreationStart().
void	bulkClassFileCreationStart()	Readies this library for many class files being fetched via LibraryInfo.createClassFileBulk(String).
int	compareTo(LibraryInfo info)
ClassFile	createClassFile(String entryName)	Returns the class file information for the specified class.
ClassFile	createClassFileBulk(String entryName)	Returns the class file information for the specified class.
private ClassFile	createClassFileImpl(String res)
PackageMapNode	createPackageMap()	Creates and returns a map of maps representing the hierarchical package structure in this library.
long	getLastModified()	Since stuff on the current classpath never changes (we don't support hotswapping), this method always returns 0.
String	getLocationAsString()	Returns the location of this library, as a string.
int	hashCodeImpl()	Subclasses should override this method since LibraryInfo.equals(Object) is overridden.

Methods inherited from class LibraryInfo

clone, equals, getJreJarInfo, getMainJreJarInfo, getSourceLocation, hashCode, setSourceLocation

Methods inherited from class Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

classNameToClassFile

private Map<String, ClassFile> classNameToClassFile

Mapping of class names to ClassFiles. This information is cached even though it's also cached at the JarReader level because the class definitions are effectively immutable since they're on the classpath. This allows you to theoretically share a single ClasspathLibraryInfo across several different jar managers.

Constructor Details

ClasspathLibraryInfo

public ClasspathLibraryInfo(String[] classes)

Constructor.

Parameters:

classes - A list of fully-qualified class names for classes you want added to the build path.

ClasspathLibraryInfo

public ClasspathLibraryInfo(List<String> classes)

Constructor.

Parameters:

classes - A list of fully-qualified class names for classes you want added to the build path.

ClasspathLibraryInfo

public ClasspathLibraryInfo(List<String> classes,
 SourceLocation sourceLoc)

Constructor.

Parameters:

classes - A list of fully-qualified class names for classes you want added to the build path.

sourceLoc - The location of the source files for the classes given. This may be null.

Method Details

bulkClassFileCreationEnd

public void bulkClassFileCreationEnd()

Description copied from class: LibraryInfo

Does any cleanup necessary after a call to LibraryInfo.bulkClassFileCreationStart().

Specified by:

bulkClassFileCreationEnd in class LibraryInfo

See Also:

• LibraryInfo.bulkClassFileCreationStart()
• LibraryInfo.createClassFileBulk(String)

bulkClassFileCreationStart

public void bulkClassFileCreationStart()

Description copied from class: LibraryInfo

Readies this library for many class files being fetched via LibraryInfo.createClassFileBulk(String). After calling this method, the actual class file fetching should be done in a try/finally block that ensures a call to LibraryInfo.bulkClassFileCreationEnd(); e.g.

libInfo.bulkClassFileCreationStart();
try {
   String entryName = ...;
   ClassFile cf = createClassFileBulk(entryName);
   ...
} finally {
   libInfo.bulkClassFileCreationEnd();
}

Specified by:

bulkClassFileCreationStart in class LibraryInfo

See Also:

• LibraryInfo.bulkClassFileCreationEnd()
• LibraryInfo.createClassFileBulk(String)

compareTo

public int compareTo(LibraryInfo info)

createClassFile

public ClassFile createClassFile(String entryName)
                          throws IOException

Description copied from class: LibraryInfo

Returns the class file information for the specified class. Instances of JarReader can call this method to lazily load information on individual classes and shove it into their package maps.

If many class files will be fetched at a time, you should prefer using LibraryInfo.bulkClassFileCreationStart() and LibraryInfo.createClassFileBulk(String) over this method, for performance reasons.

Specified by:

createClassFile in class LibraryInfo

Parameters:

entryName - The fully qualified name of the class file.

Returns:

The class file, or null if it isn't found in this library.

Throws:

IOException - If an IO error occurs.

See Also:

• LibraryInfo.createClassFileBulk(String)

createClassFileBulk

public ClassFile createClassFileBulk(String entryName)
                              throws IOException

Description copied from class: LibraryInfo

Returns the class file information for the specified class. Instances of JarReader can call this method to lazily load information on individual classes and shove it into their package maps.

This method should be used when multiple classes will be fetched from this library at the same time. It should only be called after a call to LibraryInfo.bulkClassFileCreationStart(). If only a single class file is being fetched, it is simpler to call LibraryInfo.createClassFile(String).

Specified by:

createClassFileBulk in class LibraryInfo

Parameters:

entryName - The fully qualified name of the class file.

Returns:

The class file, or null if it isn't found in this library.

Throws:

IOException - If an IO error occurs.

See Also:

• LibraryInfo.createClassFile(String)

createClassFileImpl

private ClassFile createClassFileImpl(String res)
                               throws IOException

Throws:

IOException

createPackageMap

public PackageMapNode createPackageMap()

Description copied from class: LibraryInfo

Creates and returns a map of maps representing the hierarchical package structure in this library.

Specified by:

createPackageMap in class LibraryInfo

Returns:

The package structure in this library.

getLastModified

public long getLastModified()

Since stuff on the current classpath never changes (we don't support hotswapping), this method always returns 0.

Specified by:

getLastModified in class LibraryInfo

Returns:

0 always.

getLocationAsString

public String getLocationAsString()

Description copied from class: LibraryInfo

Returns the location of this library, as a string. If this library is contained in a single jar file, this will be the full path to that jar. If it is a directory containing classes, it will be the full path of the directory. Otherwise, this value will be null.

Specified by:

getLocationAsString in class LibraryInfo

Returns:

The location of this library.

hashCodeImpl

public int hashCodeImpl()

Description copied from class: LibraryInfo

Subclasses should override this method since LibraryInfo.equals(Object) is overridden. Instances of LibraryInfo aren't typically stored in maps, so the hash value isn't necessarily important to RSTALanguageSupport.

Specified by:

hashCodeImpl in class LibraryInfo

Returns:

The hash code for this library.