Package org.spongepowered.api.data

Interface KeyValueMatcher<V>

Type Parameters:

V - The value type

All Superinterfaces:

DataSerializable

public interface KeyValueMatcher<V>
extends DataSerializable

Represents a matcher for Key values.

This matcher can only be serialized if the underlying value KeyValueMatcher can also be serialized.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	KeyValueMatcher.Builder<V>	A builder to create KeyValueMatchers.
static class	KeyValueMatcher.Operator	Represents a operator to match the values of a key query.

Method Summary

Modifier and Type	Method	Description
static KeyValueMatcher.Builder<?>	builder()	Constructs a new KeyValueMatcher.Builder to create KeyValueMatchers.
Key<? extends Value<V>>	key()	Gets the Key that is being used to match key and matcher values.
boolean	matches(@Nullable V value)	Checks whether the given value is matched by this matcher.
default boolean	matchesContainer(ValueContainer valueContainer)	Checks whether the value of the ValueContainer is matched by this matcher.
static <V> KeyValueMatcher<V>	of(Key<? extends Value<V>> key, V value)	Creates a KeyValueMatcher from the given key and value.
static <V> KeyValueMatcher<V>	of(Key<? extends Value<V>> key, V value, KeyValueMatcher.Operator operator)	Creates a KeyValueMatcher from the given key, value and operator.
KeyValueMatcher.Operator	operator()	Gets the operator of the matcher.
java.util.Optional<V>	value()	Gets the value of the query.

Methods inherited from interface org.spongepowered.api.data.persistence.DataSerializable

contentVersion, toContainer

Method Detail

of

static <V> KeyValueMatcher<V> of(Key<? extends Value<V>> key,
                                 V value)

Creates a KeyValueMatcher from the given key and value. The default operator KeyValueMatcher.Operator.EQUAL will be used.

Type Parameters:

V - The value type

Parameters:

key - The key of which the value should be matched

value - The matcher value that key values will be matched against

Returns:

The key value matcher

of

static <V> KeyValueMatcher<V> of(Key<? extends Value<V>> key,
                                 V value,
                                 KeyValueMatcher.Operator operator)

Creates a KeyValueMatcher from the given key, value and operator.

Type Parameters:

V - The value type

Parameters:

key - The key of which the value should be matched

value - The matcher value that key values will be matched against

operator - The operator how the value should be matched

Returns:

The key value matcher

builder

static KeyValueMatcher.Builder<?> builder()

Constructs a new KeyValueMatcher.Builder to create KeyValueMatchers.

Returns:

The builder

key

Key<? extends Value<V>> key()

Gets the Key that is being used to match key and matcher values.

Returns:

The key

operator

KeyValueMatcher.Operator operator()

Gets the operator of the matcher.

Returns:

The operator

value

java.util.Optional<V> value()

Gets the value of the query. A empty optional represents the property not being present.

Returns:

The value

matchesContainer

default boolean matchesContainer(ValueContainer valueContainer)

Checks whether the value of the ValueContainer is matched by this matcher.

Parameters:

valueContainer - The value container to get the key value from

Returns:

Whether this matcher matches the key value

matches

boolean matches(@Nullable V value)

Checks whether the given value is matched by this matcher.

Parameters:

value - The key value, a null value represents that the key doesn't exist

Returns:

Whether this matcher matches the key value