info.aduna.gee.publication.session
Class OpaqueRule

java.lang.Object
  info.aduna.gee.publication.session.OpaqueRule

Direct Known Subclasses:

OpaqueAndRule, OpaqueOrRule

public class OpaqueRule
extends Object

This is again a class of immutables!

Field Summary

protected static Hashtable	_internedOpaqueRules
protected String	_rule
static OpaqueRule	NONE

Method Summary

protected static boolean	_evaluate(String rule, OpaqueCLabel[] labels)
protected static int	_findClose(String rule, int index) Find the closing ) in rule for the ( at index.
static boolean	charIsRuleChar(char ch) Check whether a character is a rule character (contrary to a label character).
static OpaqueRule	create(String rule)
boolean	evaluate(OpaqueCLabel[] labels)
static boolean	isRule(String fragment) Check whether a string is a rule.
String	toString() Get the String representation of the rule.

Methods inherited from class java.lang.Object

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

Field Detail

NONE

public static OpaqueRule NONE

_rule

protected String _rule

_internedOpaqueRules

protected static Hashtable _internedOpaqueRules

Method Detail

toString

public String toString()

Get the String representation of the rule.

Overrides:

toString in class Object

evaluate

public boolean evaluate(OpaqueCLabel[] labels)

_evaluate

protected static boolean _evaluate(String rule,
                                   OpaqueCLabel[] labels)

_findClose

protected static int _findClose(String rule,
                                int index)

Find the closing ) in rule for the ( at index.

create

public static OpaqueRule create(String rule)

Parameters:

rule - the original rule string

isRule

public static boolean isRule(String fragment)

Check whether a string is a rule.

Returns:

true if a real rule, false if it is a simple numeric clabel identifier

charIsRuleChar

public static boolean charIsRuleChar(char ch)

Check whether a character is a rule character (contrary to a label character).