org.geneweaver.io.connector.CloseableCache Maven / Gradle / Ivy

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package org.geneweaver.io.connector;

import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Function;

public class CloseableCache implements Map{

	private int max;
	private Map map;

	public CloseableCache(int max) {
		this.max = max;
		this.map = new LinkedHashMap<>(max);
	}

	/**
	 * @param key
	 * @param value
	 * @return
	 * @throws Exception 
	 * @see java.util.Map#put(java.lang.Object, java.lang.Object)
	 */
	public V put(K key, V value) {
		V v = map.put(key, value);
		if (map.size()>max) {
			K oldestKey = map.keySet().iterator().next();
			V old = map.remove(oldestKey);
			try {
				old.close();
			} catch (Exception ne) {
				throw new RuntimeException(ne);
			}
		}
		return v;
	}

	/**
	 * @return
	 * @see java.util.Map#size()
	 */
	public int size() {
		return map.size();
	}

	/**
	 * @return
	 * @see java.util.Map#isEmpty()
	 */
	public boolean isEmpty() {
		return map.isEmpty();
	}

	/**
	 * @param key
	 * @return
	 * @see java.util.Map#containsKey(java.lang.Object)
	 */
	public boolean containsKey(Object key) {
		return map.containsKey(key);
	}

	/**
	 * @param value
	 * @return
	 * @see java.util.Map#containsValue(java.lang.Object)
	 */
	public boolean containsValue(Object value) {
		return map.containsValue(value);
	}

	/**
	 * @param key
	 * @return
	 * @see java.util.Map#get(java.lang.Object)
	 */
	public V get(Object key) {
		return map.get(key);
	}

	/**
	 * @param key
	 * @return
	 * @see java.util.Map#remove(java.lang.Object)
	 */
	public V remove(Object key) {
		return map.remove(key);
	}

	/**
	 * @param m
	 * @see java.util.Map#putAll(java.util.Map)
	 */
	public void putAll(Map m) {
		map.putAll(m);
	}

	/**
	 * 
	 * @see java.util.Map#clear()
	 */
	public void clear() {
		map.clear();
	}

	/**
	 * @return
	 * @see java.util.Map#keySet()
	 */
	public Set keySet() {
		return map.keySet();
	}

	/**
	 * @return
	 * @see java.util.Map#values()
	 */
	public Collection values() {
		return map.values();
	}

	/**
	 * @return
	 * @see java.util.Map#entrySet()
	 */
	public Set> entrySet() {
		return map.entrySet();
	}

	/**
	 * @param o
	 * @return
	 * @see java.util.Map#equals(java.lang.Object)
	 */
	public boolean equals(Object o) {
		return map.equals(o);
	}

	/**
	 * @return
	 * @see java.util.Map#hashCode()
	 */
	public int hashCode() {
		return map.hashCode();
	}

	/**
	 * @param key
	 * @param defaultValue
	 * @return
	 * @see java.util.Map#getOrDefault(java.lang.Object, java.lang.Object)
	 */
	public V getOrDefault(Object key, V defaultValue) {
		return map.getOrDefault(key, defaultValue);
	}

	/**
	 * @param action
	 * @see java.util.Map#forEach(java.util.function.BiConsumer)
	 */
	public void forEach(BiConsumer action) {
		map.forEach(action);
	}

	/**
	 * @param function
	 * @see java.util.Map#replaceAll(java.util.function.BiFunction)
	 */
	public void replaceAll(BiFunction function) {
		map.replaceAll(function);
	}

	/**
	 * @param key
	 * @param value
	 * @return
	 * @see java.util.Map#putIfAbsent(java.lang.Object, java.lang.Object)
	 */
	public V putIfAbsent(K key, V value) {
		return map.putIfAbsent(key, value);
	}

	/**
	 * @param key
	 * @param value
	 * @return
	 * @see java.util.Map#remove(java.lang.Object, java.lang.Object)
	 */
	public boolean remove(Object key, Object value) {
		return map.remove(key, value);
	}

	/**
	 * @param key
	 * @param oldValue
	 * @param newValue
	 * @return
	 * @see java.util.Map#replace(java.lang.Object, java.lang.Object, java.lang.Object)
	 */
	public boolean replace(K key, V oldValue, V newValue) {
		return map.replace(key, oldValue, newValue);
	}

	/**
	 * @param key
	 * @param value
	 * @return
	 * @see java.util.Map#replace(java.lang.Object, java.lang.Object)
	 */
	public V replace(K key, V value) {
		return map.replace(key, value);
	}

	/**
	 * @param key
	 * @param mappingFunction
	 * @return
	 * @see java.util.Map#computeIfAbsent(java.lang.Object, java.util.function.Function)
	 */
	public V computeIfAbsent(K key, Function mappingFunction) {
		return map.computeIfAbsent(key, mappingFunction);
	}

	/**
	 * @param key
	 * @param remappingFunction
	 * @return
	 * @see java.util.Map#computeIfPresent(java.lang.Object, java.util.function.BiFunction)
	 */
	public V computeIfPresent(K key, BiFunction remappingFunction) {
		return map.computeIfPresent(key, remappingFunction);
	}

	/**
	 * @param key
	 * @param remappingFunction
	 * @return
	 * @see java.util.Map#compute(java.lang.Object, java.util.function.BiFunction)
	 */
	public V compute(K key, BiFunction remappingFunction) {
		return map.compute(key, remappingFunction);
	}

	/**
	 * @param key
	 * @param value
	 * @param remappingFunction
	 * @return
	 * @see java.util.Map#merge(java.lang.Object, java.lang.Object, java.util.function.BiFunction)
	 */
	public V merge(K key, V value, BiFunction remappingFunction) {
		return map.merge(key, value, remappingFunction);
	}
}