Package com.flowingcode.vaadin.addons.regex

Class RegularExpression

java.lang.Object

com.flowingcode.vaadin.addons.regex.RegularExpression

public final class RegularExpression
extends Object

Represents a regular expression.

This class assists in the creation and handling of regular expressions by providing pre-defined operators for common patterns such as "starts with", "ends with", and "contains". It also supports an advanced mode where users can input custom regular expressions.

Instances of this class are immutable and validated upon creation.

Author:

Javier Godoy

Constructor Summary

Constructors

Constructor	Description
RegularExpression(@NonNull RegularExpressionOperator operator, @NonNull String input)	Creates a new RegularExpression based on the specified operator and input.

Method Summary

Modifier and Type	Method	Description
static RegularExpression	of(Pattern pattern)	Creates a RegularExpression instance from a given Pattern.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

RegularExpression

public RegularExpression(@NonNull
 @NonNull RegularExpressionOperator operator,
 @NonNull
 @NonNull String input)
                  throws PatternSyntaxException

Creates a new RegularExpression based on the specified operator and input.

Parameters:

operator - the type of regular expression (e.g., RegularExpressionOperator.CONTAINS)

input - the string to be used for pattern creation

Throws:

PatternSyntaxException - if the resulting pattern is invalid.

Method Details

of

public static RegularExpression of(Pattern pattern)

Creates a RegularExpression instance from a given Pattern.

This method attempts to determine if the pattern corresponds to a simple RegularExpressionOperator like "starts with", "ends with", or "contains". If it does, a corresponding RegularExpression is returned. Otherwise, an advanced mode expression is created.

Parameters:

pattern - the pattern to analyze

Returns:

a RegularExpression instance

Throws:

NullPointerException - if pattern is null.

toString

public String toString()

Overrides:

toString in class Object