edu.isi.pegasus.common.util
Class ProfileParser

java.lang.Object
  edu.isi.pegasus.common.util.ProfileParser

public class ProfileParser
extends Object

Converts between the string version of a profile specification and the parsed triples and back again.

Author:

Gaurang Mehta, Jens-S. Vöckler

Field Summary

private static byte[][]	c_action There are six identified actions.
private static byte[][]	c_state Table to contain the state transition diagram for the parser.

Constructor Summary

ProfileParser()

Method Summary

static String	combine(List l) Creates a profile string from the internal representation.
static String	combine(Profiles p) Creates a profile string from the internal representation.
static void	main(String[] args) Test program.
static List	parse(String s) Parses a given user profile specification into a map of maps.

Methods inherited from class java.lang.Object

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

Field Detail

c_state

private static final byte[][] c_state

Table to contain the state transition diagram for the parser. The rows are defined as current states 0 through 7. The columns is the current input character. The cell contains first the action to be taken, followed by the new state to transition to:

      | EOS | adu |  ,  |  ;  |  :  |  \  |  "  |  =  |other|
      |  0  |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |
 -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
   0  | -,F |Cn,0 | -,E1| -,E1| -,1 | -,E1| -,E1| -,E1| -,E1|
   1  | -,E2| -,E1| -,E1| -,E1| -,2 | -,E1| -,E1| -,E1| -,E1|
   2  | -,F |Ck,2 | -,E1| -,E1| -,E1| -,E1| -,E1| -,3 |Ck,E1|
   3  | -,E2|Cv,6 | -E1 | -,E1| -,E1| -,E1| -,4 | -,E1|Cv,6 |
   4  | -,E2|Cv,4 |Cv,4 |Cv,4 |Cv,4 | -,5 | -,7 |Cv,4 |Cv,4 |
   5  | -,E2|Cv,4 |Cv,4 |Cv,4 |Cv,4 |Cv,4 |Cv,4 |Cv,4 |Cv,4 |
   6  |A1,F |Cv,6 |A2,2 |A1,0 | -,E1| -,E1| -,E1| -,E1|Cv,6 |
   7  |A1,F | -,E1|A2,2 |A1,0 | -,E1| -,E1| -,E1| -,E1| -,E1|
 -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
   F  |  8  | final state
   E1 |  9  | error1: illegal character in input
   E2 | 10  | error2: premature end of input
 

The state variable collects the new state for a given state (rows) and input character set (column) identifier.

c_action

private static final byte[][] c_action

There are six identified actions.

  -   | 0 | noop
  Cn  | 1 | append input character to namespace field
  Ck  | 2 | append input character to key field
  Cv  | 3 | append input character to value field
  A1  | 4 | create triple and flush all fields
  A2  | 5 | create triple and flush key and value only
 

The action variable collects the action to take for a given state (rows) and input character set (column).

Constructor Detail

ProfileParser

public ProfileParser()

Method Detail

parse

public static List parse(String s)
                  throws ProfileParserException

Parses a given user profile specification into a map of maps.

Parameters:

s - is the input string to parse

Returns:

a map of namespaces mapping to maps of key value pairs.

Throws:

ProfileParserException - if the input cannot be recognized

See Also:

combine( List m )

combine

public static String combine(Profiles p)

Creates a profile string from the internal representation.

Parameters:

l - is a list of profiles

Returns:

a string containing the representation. The string can be empty (FIXME: should it be "null" or null?) for an empty list.

See Also:

parse( String s )

combine

public static String combine(List l)

Creates a profile string from the internal representation.

Parameters:

l - is a list of profiles

Returns:

a string containing the representation. The string can be empty (FIXME: should it be "null" or null?) for an empty list.

See Also:

parse( String s )

main

public static void main(String[] args)

Test program.

Parameters:

args - are command-line arguments