psdi.common.parse

Class Matches

java.lang.Object

psdi.common.parse.Matches

Direct Known Subclasses:

AnyMatch, MatchEnd, SingleMatch

public class Matches
extends java.lang.Object

Class used by the LikeNode to compare the pattern to the operand. A data structure similar to a state machine is created to compare the operand to the pattern. This seems like a clunky and brute-force way to do this, but it works and is easily understandable.

Constructor Summary

Constructors

Constructor and Description
Matches(char matchChar, Matches nextNode)

Method Summary

Modifier and Type	Method and Description
static boolean	doesMatch(java.lang.String pattern, java.lang.String operand) Main method determines whether the operand matches the pattern given.
protected boolean	matches(char[] operand, int cursorPos) Evaluates the operand at the position given for this node.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Matches

public Matches(char matchChar,
               Matches nextNode)

Method Detail

doesMatch

public static final boolean doesMatch(java.lang.String pattern,
                                      java.lang.String operand)

Main method determines whether the operand matches the pattern given.

Parameters:

pattern - The pattern may have wildcards "%" and "_".

operand - The operand is compared to the pattern.

Returns:

true if the operand satisfies the pattern.

matches

protected boolean matches(char[] operand,
                          int cursorPos)

Evaluates the operand at the position given for this node.

Parameters:

operand - The operand String coverted to a character array.

cursorPos - From where to make the comparison to this node.

See Also:

AnyMatch.matches(char[], int), SingleMatch.matches(char[], int), MatchEnd.matches(char[], int)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object