org.openstreetmap.josm.tools

Class Predicates

java.lang.Object

org.openstreetmap.josm.tools.Predicates

public final class Predicates
extends Object

Utility class for creating Predicates.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Predicates()

Method Summary

Modifier and Type	Method and Description
static <T> Predicate<T>	equalTo(T ref) Returns a Predicate executing Objects.equals(java.lang.Object, java.lang.Object).
static Predicate<OsmPrimitive>	hasKey(String key) Returns a Predicate executing AbstractPrimitive.hasKey(String).
static Predicate<OsmPrimitive>	hasTag(String key, String... values) Returns a Predicate executing AbstractPrimitive.hasTag(String, String...).
static <T> Predicate<T>	inCollection(Collection<? extends T> target) Returns a Predicate executing Collection.contains(Object).
static <T> Predicate<T>	isNull() Returns a Predicate testing whether objects are null.
static <T> Predicate<T>	not(Predicate<T> predicate) Returns the negation of predicate.
static Predicate<String>	stringContains(String pattern) Returns a Predicate executing String.contains(CharSequence).
static Predicate<String>	stringContainsPattern(Pattern pattern) Returns a Predicate executing Pattern.matcher(CharSequence) and Matcher.find().
static Predicate<String>	stringMatchesPattern(Pattern pattern) Returns a Predicate executing Pattern.matcher(CharSequence) and Matcher.matches().

Methods inherited from class java.lang.Object

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

Constructor Detail

Predicates

private Predicates()

Method Detail

not

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

Returns the negation of predicate.

Type Parameters:

T - type of items

Parameters:

predicate - the predicate to negate

Returns:

the negation of predicate

equalTo

public static <T> Predicate<T> equalTo(T ref)

Returns a Predicate executing Objects.equals(java.lang.Object, java.lang.Object).

Type Parameters:

T - type of items

Parameters:

ref - the reference object

Returns:

a Predicate executing Objects.equals(java.lang.Object, java.lang.Object)

stringMatchesPattern

public static Predicate<String> stringMatchesPattern(Pattern pattern)

Returns a Predicate executing Pattern.matcher(CharSequence) and Matcher.matches().

Parameters:

pattern - the pattern

Returns:

a Predicate executing Pattern.matcher(CharSequence) and Matcher.matches()

stringContainsPattern

public static Predicate<String> stringContainsPattern(Pattern pattern)

Returns a Predicate executing Pattern.matcher(CharSequence) and Matcher.find().

Parameters:

pattern - the pattern

Returns:

a Predicate executing Pattern.matcher(CharSequence) and Matcher.find()

stringContains

public static Predicate<String> stringContains(String pattern)

Returns a Predicate executing String.contains(CharSequence).

Parameters:

pattern - the pattern

Returns:

a Predicate executing String.contains(CharSequence)

hasTag

public static Predicate<OsmPrimitive> hasTag(String key,
                                             String... values)

Returns a Predicate executing AbstractPrimitive.hasTag(String, String...).

Parameters:

key - the key forming the tag

values - one or many values forming the tag

Returns:

a Predicate executing AbstractPrimitive.hasTag(String, String...)

hasKey

public static Predicate<OsmPrimitive> hasKey(String key)

Returns a Predicate executing AbstractPrimitive.hasKey(String).

Parameters:

key - the key

Returns:

a Predicate executing AbstractPrimitive.hasKey(String)

inCollection

public static <T> Predicate<T> inCollection(Collection<? extends T> target)

Returns a Predicate executing Collection.contains(Object).

Type Parameters:

T - type of items

Parameters:

target - collection

Returns:

a Predicate executing Collection.contains(Object)

isNull

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

Returns a Predicate testing whether objects are null.

Type Parameters:

T - type of items

Returns:

a Predicate testing whether objects are null