Package dap4.servlet

Class URLMapDefault

java.lang.Object

dap4.servlet.URLMapDefault

All Implemented Interfaces:

URLMap

public class URLMapDefault
extends Object
implements URLMap

Define a URL map that assumes that there some prefix of the urlpath that can be replaced by a path prefix and that everything else is the same. The mapping is carried out from a properties file that has lines of the form =

Nested Class Summary

Nested classes/interfaces inherited from interface dap4.servlet.URLMap

URLMap.Result

Constructor Summary

Constructors

Constructor	Description
URLMapDefault()

Method Summary

Modifier and Type	Method	Description
void	addEntry(String urlpath, String fileprefix)	Add an entry into the map.
void	load(String filepath)
protected URLMap.Result	longestmatch(SortedMap<String,String> map, String prefix)
URLMap.Result	mapPath(String path)	Inverse of mapURL; returns a url path and suffix: U,S such that mapURL(U)+S = path Return a Pair specifying: 1.
URLMap.Result	mapURL(String urlpath)	Use some maximal prefix of the url path to locate the associated file path prefix.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

URLMapDefault

public URLMapDefault()

Method Detail

addEntry

public void addEntry(String urlpath,
                     String fileprefix)
              throws dap4.core.util.DapException

Description copied from interface: URLMap

Add an entry into the map. Any trailing / on urlprefix or leading / on file prefix will be removed.

Specified by:

addEntry in interface URLMap

Throws:

dap4.core.util.DapException

load

public void load(String filepath)
          throws IOException

Throws:

IOException

mapURL

public URLMap.Result mapURL(String urlpath)
                     throws dap4.core.util.DapException

Description copied from interface: URLMap

Use some maximal prefix of the url path to locate the associated file path prefix. Return a Pair specifying: 1. Pair.prefix: path specifying the file path associated with the url prefix 2. Pair.suffix: the suffix of the url path that was not used.

Specified by:

mapURL in interface URLMap

Parameters:

urlpath - a string specifying the url path to be mapped

Returns:

Pair returning items 1 an 2 above.

Throws:

dap4.core.util.DapException - if the map fails

Note that this map does not deal with the whole url, only the path part because as a rule, the host+port is unknown at the time the map is built and also because there might be multiple hosts using the same map.

mapPath

public URLMap.Result mapPath(String path)
                      throws dap4.core.util.DapException

Description copied from interface: URLMap

Inverse of mapURL; returns a url path and suffix: U,S such that mapURL(U)+S = path Return a Pair specifying: 1. Pair.prefix: path specifying the url path associated with the file prefix 2. Pair.suffix: the suffix of the file path that was not used.

Specified by:

mapPath in interface URLMap

Parameters:

path - a string specifying the file path to be mapped

Returns:

Pair returning items 1 an 2 above.

Throws:

dap4.core.util.DapException - if the map fails

This is an optional operation and if not supported, throw UnsupportedOperationException.

longestmatch

protected URLMap.Result longestmatch(SortedMap<String,String> map,
                                     String prefix)

toString

public String toString()

Overrides:

toString in class Object