Package com.mckoi.database.regexbridge

Class JavaRegex

java.lang.Object

com.mckoi.database.regexbridge.JavaRegex

All Implemented Interfaces:

RegexLibrary

public class JavaRegex
extends java.lang.Object
implements RegexLibrary

A bridge to the internal Java regular expression library that was introduced in Java 1.4. This bridge will only work if the regular expression API is available in the class library. It is not available in 1.3 and 1.2.

Author:

Tobias Downer

Constructor Summary

Constructors

Constructor	Description
JavaRegex()

Method Summary

Modifier and Type	Method	Description
boolean	regexMatch(java.lang.String regular_expression, java.lang.String expression_ops, java.lang.String value)	Matches a regular expression against a string value.
IntegerVector	regexSearch(Table table, int column, java.lang.String regular_expression, java.lang.String expression_ops)	Performs a regular expression search on the given column of the table.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaRegex

public JavaRegex()

Method Detail

regexMatch

public boolean regexMatch(java.lang.String regular_expression,
                          java.lang.String expression_ops,
                          java.lang.String value)

Description copied from interface: RegexLibrary

Matches a regular expression against a string value. If the value is a match against the expression then it returns true.

Specified by:

regexMatch in interface RegexLibrary

Parameters:

regular_expression - the expression to match (eg. "[0-9]+").

expression_ops - expression operator string that specifies various flags. For example, "im" is like '/[expression]/im' in Perl.

value - the string to test.

regexSearch

public IntegerVector regexSearch(Table table,
                                 int column,
                                 java.lang.String regular_expression,
                                 java.lang.String expression_ops)

Description copied from interface: RegexLibrary

Performs a regular expression search on the given column of the table. Returns an IntegerVector that contains the list of rows in the table that matched the expression. Returns an empty list if the expression matched no rows in the column.

Specified by:

regexSearch in interface RegexLibrary

Parameters:

table - the table to search for matching values.

column - the column of the table to search for matching values.

regular_expression - the expression to match (eg. "[0-9]+").

expression_ops - expression operator string that specifies various flags. For example, "im" is like '/[expression]/im' in Perl.