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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,7 @@ | ||
| language: java | ||
| jdk: | ||
| - oraclejdk8 | ||
| - oraclejdk8 | ||
| - oraclejdk11 | ||
| branches: | ||
| only: | ||
| - master | ||
| - master |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package jp.jyn.jecon.cache; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| public class CacheFactory { | ||
| public final static int DISABLE = 0; | ||
| public final static int INFINITY = -1; | ||
|
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| private CacheFactory() { | ||
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| } | ||
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| public static <K, V> Map<K, V> createCache(int size) { | ||
| if (size == -1) { | ||
| return new HashMap<>(); | ||
| } else if (size == 0) { | ||
| return NoOpMap.getInstance(); | ||
| } else if (size > 0) { | ||
| return new LRUMap<>(size); | ||
| } | ||
| throw new IllegalArgumentException("Invalid size"); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| package jp.jyn.jecon.cache; | ||
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| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
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| public class LRUMap<K, V> extends LinkedHashMap<K, V> { | ||
| private final int maxSize; | ||
| public LRUMap(int maxSize) { | ||
| super((maxSize * 4) / 3, 0.75f, true); | ||
| this.maxSize = maxSize; | ||
| } | ||
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| @Override | ||
| protected boolean removeEldestEntry(Map.Entry<K, V> eldest) { | ||
| return size() > maxSize; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| package jp.jyn.jecon.cache; | ||
|
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| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
| import java.util.Set; | ||
| import java.util.function.BiConsumer; | ||
| import java.util.function.BiFunction; | ||
| import java.util.function.Function; | ||
|
|
||
| /** | ||
| * "Do nothing" cache | ||
| * | ||
| * @param <K> Key | ||
| * @param <V> Value | ||
| */ | ||
| public class NoOpMap<K, V> implements Map<K, V> { | ||
| private final static NoOpMap instance = new NoOpMap(); | ||
| @SuppressWarnings("unchecked") | ||
| public static <K, V> NoOpMap<K, V> getInstance() { | ||
| return (NoOpMap<K, V>) instance; | ||
| } | ||
| private NoOpMap() { | ||
| } | ||
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| @Override | ||
| public int size() { | ||
| return 0; | ||
| } | ||
| @Override | ||
| public boolean isEmpty() { | ||
| return true; | ||
| } | ||
| @Override | ||
| public boolean containsKey(Object key) { | ||
| return false; | ||
| } | ||
| @Override | ||
| public boolean containsValue(Object value) { | ||
| return false; | ||
| } | ||
| @Override | ||
| public V get(Object key) { | ||
| return null; | ||
| } | ||
| @Override | ||
| public V put(K key, V value) { | ||
| return null; | ||
| } | ||
| @Override | ||
| public V remove(Object key) { | ||
| return null; | ||
| } | ||
| @Override | ||
| public void putAll(Map<? extends K, ? extends V> m) { | ||
|
|
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| } | ||
| @Override | ||
| public void clear() { | ||
|
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| } | ||
| @Override | ||
| public Set<K> keySet() { | ||
| return Collections.emptySet(); | ||
| } | ||
| @Override | ||
| public Collection<V> values() { | ||
| return Collections.emptySet(); | ||
| } | ||
| @Override | ||
| public Set<Entry<K, V>> entrySet() { | ||
| return Collections.emptySet(); | ||
| } | ||
|
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| @Override | ||
| public V getOrDefault(Object key, V defaultValue) { | ||
| return defaultValue; | ||
| } | ||
| @Override | ||
| public void forEach(BiConsumer<? super K, ? super V> action) { | ||
| Objects.requireNonNull(action); | ||
| } | ||
|
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| @Override | ||
| public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) { | ||
| Objects.requireNonNull(function); | ||
| } | ||
|
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| @Override | ||
| public V putIfAbsent(K key, V value) { | ||
| return null; | ||
| } | ||
|
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||
| @Override | ||
| public boolean remove(Object key, Object value) { | ||
| return false; | ||
| } | ||
| @Override | ||
| public boolean replace(K key, V oldValue, V newValue) { | ||
| return false; | ||
| } | ||
| @Override | ||
| public V replace(K key, V value) { | ||
| return null; | ||
| } | ||
| @Override | ||
| public V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) { | ||
| return Objects.requireNonNull(mappingFunction).apply(key); | ||
| } | ||
| @Override | ||
| public V computeIfPresent(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) { | ||
| Objects.requireNonNull(remappingFunction); | ||
| return null; | ||
| } | ||
| @Override | ||
| public V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction) { | ||
| return Objects.requireNonNull(remappingFunction).apply(key, null); | ||
| } | ||
| @Override | ||
| public V merge(K key, V value, BiFunction<? super V, ? super V, ? extends V> remappingFunction) { | ||
| Objects.requireNonNull(remappingFunction); | ||
| Objects.requireNonNull(value); | ||
| return value; | ||
| } | ||
|
|
||
| @Override | ||
| public int hashCode() { | ||
| return 0; | ||
| } | ||
| } |
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