Package org.apache.calcite.schema.lookup

Class LikePattern

java.lang.Object

org.apache.calcite.schema.lookup.LikePattern

public class LikePattern
extends Object

This class is used to hold a pattern, which is typically used in SQL LIKE statements.

The pattern can contain wildcards (`%`) or character ranges (`[a-z]`).

The pattern can also be translated to a Predicate1<String> which can be used to do filtering inside java.

Field Summary

Fields

Modifier and Type	Field	Description
final String	pattern

Constructor Summary

Constructors

Constructor	Description
LikePattern(String pattern)

Method Summary

Modifier and Type	Method	Description
static LikePattern	any()
static Pattern	likeToRegex(String pattern)	Converts a LIKE-style pattern (where '%' represents a wild-card, escaped using '\') to a Java regex.
Predicate1<String>	matcher()
static Predicate1<String>	matcher(String likePattern)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

pattern

public final String pattern

Constructor Details

LikePattern

public LikePattern(String pattern)

Method Details

toString

public String toString()

Overrides:

toString in class Object

matcher

public Predicate1<String> matcher()

any

public static LikePattern any()

matcher

public static Predicate1<String> matcher(String likePattern)

likeToRegex

public static Pattern likeToRegex(String pattern)

Converts a LIKE-style pattern (where '%' represents a wild-card, escaped using '\') to a Java regex. It's always case sensitive.