Package io.debezium.function

Class Predicates

java.lang.Object

io.debezium.function.Predicates

public class Predicates
extends Object

Utilities for constructing various predicates.

Author:

Randall Hauch

Field Summary

Fields

Modifier and Type	Field	Description
private static Pattern	LITERAL_SEPARATOR_PATTERN

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Predicates()

Method Summary

Modifier and Type	Method	Description
static Predicate<String>	excludes(String regexPatterns)	Generate a predicate function that for any supplied string returns true if none of the regular expressions in the supplied comma-separated list matches the predicate parameter.
static <T> Predicate<T>	excludes(String regexPatterns, Function<T,String> conversion)	Generate a predicate function that for any supplied parameter returns true if none of the regular expressions in the supplied comma-separated list matches the predicate parameter.
static Predicate<String>	excludesLiterals(String literals)	Generate a predicate function that for any supplied string returns true if none of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.
static <T> Predicate<T>	excludesLiterals(String literals, Function<T,String> conversion)	Generate a predicate function that for any supplied string returns true if none of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.
static <T> Predicate<T>	excludesLiteralsOrPatterns(String patterns, Predicate<String> isLiteral, Function<T,String> conversion)	Generate a predicate function that for any supplied string returns true if none of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter.
static Predicate<String>	excludesUuids(String uuidPatterns)	Generate a predicate function that for any supplied string returns true if none of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter.
static <T> Predicate<T>	filter(Predicate<T> allowed, Predicate<T> disallowed)	Create a predicate function that allows only those values are allowed or not disallowed by the supplied predicates.
protected static <T> Predicate<T>	includedInLiterals(Collection<String> literals, Function<T,String> conversion)
protected static <T,U> BiPredicate<T,U>	includedInPatterns(Collection<Pattern> patterns, BiFunction<T,U,String> conversion)
protected static <T> Predicate<T>	includedInPatterns(Collection<Pattern> patterns, Function<T,String> conversion)
static Predicate<String>	includes(String regexPatterns)	Generate a predicate function that for any supplied string returns true if any of the regular expressions in the supplied comma-separated list matches the predicate parameter.
static <T,U> BiPredicate<T,U>	includes(String regexPatterns, BiFunction<T,U,String> conversion)
static <T> Predicate<T>	includes(String regexPatterns, Function<T,String> conversion)	Generate a predicate function that for any supplied parameter returns true if any of the regular expressions in the supplied comma-separated list matches the predicate parameter in a case-insensitive manner.
static Predicate<String>	includesLiterals(String literals)	Generate a predicate function that for any supplied string returns true if any of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.
static <T> Predicate<T>	includesLiterals(String literals, Function<T,String> conversion)	Generate a predicate function that for any supplied string returns true if any of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.
static <T> Predicate<T>	includesLiteralsOrPatterns(String literalsOrPatterns, Predicate<String> isLiteral, Function<T,String> conversion)	Generate a predicate function that for any supplied string returns true if any of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter.
static Predicate<String>	includesUuids(String uuidPatterns)	Generate a predicate function that for any supplied UUID strings returns true if any of the comma-separated UUID literals or regular expressions matches the predicate parameter.
static Function<String,Optional<Pattern>>	matchedBy(String regexPatterns)	Generate a predicate function that for any supplied string returns a Pattern representing the first regular expression in the supplied comma-separated list that matches the predicate parameter in a case-insensitive manner.
protected static <T,U> BiFunction<T,U,Optional<Pattern>>	matchedByPattern(Collection<Pattern> patterns, BiFunction<T,U,String> conversion)
protected static <T> Function<T,Optional<Pattern>>	matchedByPattern(Collection<Pattern> patterns, Function<T,String> conversion)
static <R> Predicate<R>	not(Predicate<R> predicate)
static <T> Predicate<T>	notNull()

Methods inherited from class java.lang.Object

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

Field Detail

LITERAL_SEPARATOR_PATTERN

private static final Pattern LITERAL_SEPARATOR_PATTERN

Constructor Detail

Predicates

private Predicates()

Method Detail

includesUuids

public static Predicate<String> includesUuids(String uuidPatterns)

Generate a predicate function that for any supplied UUID strings returns true if any of the comma-separated UUID literals or regular expressions matches the predicate parameter. This supplied strings can be a mixture of regular expressions and UUID literals, and the most efficient method will be used for each.

Parameters:

uuidPatterns - the comma-separated UUID literals or regular expression patterns; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

excludesUuids

public static Predicate<String> excludesUuids(String uuidPatterns)

Generate a predicate function that for any supplied string returns true if none of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter. This supplied strings can be a mixture of regular expressions and UUID literals, and the most efficient method will be used for each.

Parameters:

uuidPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

includesLiteralsOrPatterns

public static <T> Predicate<T> includesLiteralsOrPatterns(String literalsOrPatterns,
                                                          Predicate<String> isLiteral,
                                                          Function<T,String> conversion)

Generate a predicate function that for any supplied string returns true if any of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter. This supplied strings can be a mixture of regular expressions and literals, and the most efficient method will be used for each.

Parameters:

literalsOrPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

isLiteral - function that determines if a given pattern is a literal string; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

excludesLiteralsOrPatterns

public static <T> Predicate<T> excludesLiteralsOrPatterns(String patterns,
                                                          Predicate<String> isLiteral,
                                                          Function<T,String> conversion)

Generate a predicate function that for any supplied string returns true if none of the regular expressions or literals in the supplied comma-separated list matches the predicate parameter. This supplied strings can be a mixture of regular expressions and literals, and the most efficient method will be used for each.

Parameters:

patterns - the comma-separated regular expression pattern (or literal) strings; may not be null

isLiteral - function that determines if a given pattern is a literal string; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

includesLiterals

public static Predicate<String> includesLiterals(String literals)

Generate a predicate function that for any supplied string returns true if any of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.

Parameters:

literals - the comma-separated literal strings; may not be null

Returns:

the predicate function that performs the matching

excludesLiterals

public static Predicate<String> excludesLiterals(String literals)

Generate a predicate function that for any supplied string returns true if none of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.

Parameters:

literals - the comma-separated literal strings; may not be null

Returns:

the predicate function that performs the matching

includesLiterals

public static <T> Predicate<T> includesLiterals(String literals,
                                                Function<T,String> conversion)

Generate a predicate function that for any supplied string returns true if any of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.

Parameters:

literals - the comma-separated literal strings; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

excludesLiterals

public static <T> Predicate<T> excludesLiterals(String literals,
                                                Function<T,String> conversion)

Generate a predicate function that for any supplied string returns true if none of the literals in the supplied comma-separated list case insensitively matches the predicate parameter.

Parameters:

literals - the comma-separated literal strings; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

includes

public static Predicate<String> includes(String regexPatterns)

Generate a predicate function that for any supplied string returns true if any of the regular expressions in the supplied comma-separated list matches the predicate parameter.

Parameters:

regexPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

excludes

public static Predicate<String> excludes(String regexPatterns)

Generate a predicate function that for any supplied string returns true if none of the regular expressions in the supplied comma-separated list matches the predicate parameter.

Parameters:

regexPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

includes

public static <T> Predicate<T> includes(String regexPatterns,
                                        Function<T,String> conversion)

Generate a predicate function that for any supplied parameter returns true if any of the regular expressions in the supplied comma-separated list matches the predicate parameter in a case-insensitive manner.

Parameters:

regexPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

includes

public static <T,U> BiPredicate<T,U> includes(String regexPatterns,
                                                          BiFunction<T,U,String> conversion)

includedInPatterns

protected static <T> Predicate<T> includedInPatterns(Collection<Pattern> patterns,
                                                     Function<T,String> conversion)

includedInPatterns

protected static <T,U> BiPredicate<T,U> includedInPatterns(Collection<Pattern> patterns,
                                                                       BiFunction<T,U,String> conversion)

matchedBy

public static Function<String,Optional<Pattern>> matchedBy(String regexPatterns)

Generate a predicate function that for any supplied string returns a Pattern representing the first regular expression in the supplied comma-separated list that matches the predicate parameter in a case-insensitive manner.

Parameters:

regexPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

Returns:

the function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

matchedByPattern

protected static <T> Function<T,Optional<Pattern>> matchedByPattern(Collection<Pattern> patterns,
                                                                          Function<T,String> conversion)

matchedByPattern

protected static <T,U> BiFunction<T,U,Optional<Pattern>> matchedByPattern(Collection<Pattern> patterns,
                                                                                            BiFunction<T,U,String> conversion)

includedInLiterals

protected static <T> Predicate<T> includedInLiterals(Collection<String> literals,
                                                     Function<T,String> conversion)

excludes

public static <T> Predicate<T> excludes(String regexPatterns,
                                        Function<T,String> conversion)

Generate a predicate function that for any supplied parameter returns true if none of the regular expressions in the supplied comma-separated list matches the predicate parameter.

Parameters:

regexPatterns - the comma-separated regular expression pattern (or literal) strings; may not be null

conversion - the function that converts each predicate-supplied value to a string that can be matched against the regular expressions; may not be null

Returns:

the predicate function that performs the matching

Throws:

PatternSyntaxException - if the string includes an invalid regular expression

filter

public static <T> Predicate<T> filter(Predicate<T> allowed,
                                      Predicate<T> disallowed)

Create a predicate function that allows only those values are allowed or not disallowed by the supplied predicates.

Parameters:

allowed - the predicate that defines the allowed values; may be null

disallowed - the predicate that defines the disallowed values; may be null

Returns:

the predicate function; never null

not

public static <R> Predicate<R> not(Predicate<R> predicate)

notNull

public static <T> Predicate<T> notNull()