Package org.elasticsearch.xpack.esql.core.expression.predicate.regex

Class WildcardPatternList

java.lang.Object

org.elasticsearch.xpack.esql.core.expression.predicate.regex.AbstractStringPattern

org.elasticsearch.xpack.esql.core.expression.predicate.regex.WildcardPatternList

All Implemented Interfaces:

Writeable, StringPattern, NodeStringRenderable

public class WildcardPatternList
extends AbstractStringPattern
implements Writeable

A list of wildcard patterns. Each pattern is a WildcardPattern that can be used to match strings and is similar to basic regex, supporting '?' wildcard for single character (same as regex ".") and '*' wildcard for multiple characters (same as regex ".*")

Allows escaping based on a regular char.

Nested Class Summary

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NAME

Constructor Summary

Constructors

Constructor	Description
WildcardPatternList(List<WildcardPattern> patterns)
WildcardPatternList(StreamInput in)

Method Summary

Modifier and Type	Method	Description
String	asJavaRegex()	Returns a Java regex that matches any of the patterns in the list.
protected org.apache.lucene.util.automaton.Automaton	doCreateAutomaton(boolean ignoreCase)	Creates an automaton that matches any of the patterns in the list.
boolean	equals(Object obj)
int	hashCode()
void	nodeString(StringBuilder sb, Node.NodeStringFormat format, NodeStringMapper mapper)	Renders each pattern via its own nodeString so every element is sanitized: a single pattern renders bare ("a*"), multiple render as a parenthesized list (("a*", "b*")).
String	pattern()	Returns a string that matches any of the patterns in the list.
List<WildcardPattern>	patternList()
void	writeTo(StreamOutput out)

Methods inherited from class org.elasticsearch.xpack.esql.core.expression.predicate.regex.AbstractStringPattern

createAutomaton, exactMatch, extractPrefix, extractSuffix, matchesAll

Methods inherited from class java.lang.Object

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

Field Details

NAME

public static final String NAME

See Also:

• Constant Field Values

Constructor Details

WildcardPatternList

public WildcardPatternList(List<WildcardPattern> patterns)

WildcardPatternList

public WildcardPatternList(StreamInput in)
                    throws IOException

Throws:

IOException

Method Details

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Specified by:

writeTo in interface Writeable

Throws:

IOException

patternList

public List<WildcardPattern> patternList()

doCreateAutomaton

protected org.apache.lucene.util.automaton.Automaton doCreateAutomaton(boolean ignoreCase)

Creates an automaton that matches any of the patterns in the list. We create a single automaton that is the union of all individual automata to improve performance

Specified by:

doCreateAutomaton in class AbstractStringPattern

asJavaRegex

public String asJavaRegex()

Returns a Java regex that matches any of the patterns in the list. The patterns are joined with the '|' operator to create a single regex.

Specified by:

asJavaRegex in interface StringPattern

pattern

public String pattern()

Returns a string that matches any of the patterns in the list. The patterns are joined with the '|' operator to create a single wildcard string.

Specified by:

pattern in interface StringPattern

nodeString

public void nodeString(StringBuilder sb,
 Node.NodeStringFormat format,
 NodeStringMapper mapper)

Renders each pattern via its own nodeString so every element is sanitized: a single pattern renders bare ("a*"), multiple render as a parenthesized list (("a*", "b*")). Under NodeStringMapper.IDENTITY the single / empty cases match the legacy rendering; the multi-pattern case drops the redundant outer quotes.

Specified by:

nodeString in interface NodeStringRenderable

Overrides:

nodeString in class AbstractStringPattern

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object