190 lines
6.8 KiB
Java
190 lines
6.8 KiB
Java
/*
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* This file is part of Player Analytics (Plan).
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*
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* Plan is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License v3 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Plan is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Plan. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.djrapitops.plan.delivery.domain.container;
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import com.djrapitops.plan.delivery.domain.keys.Key;
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import com.djrapitops.plan.delivery.formatting.Formatter;
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import com.djrapitops.plan.utilities.java.Lists;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.function.Supplier;
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/**
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* Interface for an object that can store arbitrary data referenced via {@link Key} objects.
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* <p>
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* Implementations should mainly be concerned on how the data given to it is stored.
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* Retrieval has some details that should be followed.
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*
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* @author AuroraLS3
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*/
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public interface DataContainer {
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default Map<String, Object> mapToNormalMap() {
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Map<String, Object> values = new HashMap<>();
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getMap().forEach((key, value) ->
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{
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if (value instanceof DataContainer) {
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value = ((DataContainer) value).mapToNormalMap();
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}
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if (value instanceof Map) {
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value = handleMap((Map<?, ?>) value);
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}
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if (value instanceof List) {
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value = handleList((List<?>) value);
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}
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values.put(key.getKeyName(), value);
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}
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);
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return values;
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}
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default List<?> handleList(List<?> list) {
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if (list.stream().findAny().orElse(null) instanceof DataContainer) {
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return Lists.map(list, obj -> ((DataContainer) obj).mapToNormalMap());
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}
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return list;
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}
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default Map<?, ?> handleMap(Map<?, ?> map) {
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if (map.values().stream().findAny().orElse(null) instanceof DataContainer) {
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Map<Object, Object> newMap = new HashMap<>();
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map.forEach((key, value) -> newMap.put(key, ((DataContainer) value).mapToNormalMap()));
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return newMap;
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}
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return map;
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}
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/**
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* Place your data inside the container.
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* <p>
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* What the container does with the object depends on the implementation.
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*
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* @param key Key of type T that identifies the data and will be used later when the data needs to be fetched.
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* @param obj object to store
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* @param <T> Type of the object
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*/
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<T> void putRawData(Key<T> key, T obj);
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/**
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* Place a data supplier inside the container.
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* <p>
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* What the container does with the supplier depends on the implementation.
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*
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* @param key Key of type T that identifies the data and will be used later when the data needs to be fetched.
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* @param supplier Supplier to store
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* @param <T> Type of the object
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*/
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<T> void putSupplier(Key<T> key, Supplier<T> supplier);
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/**
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* Place a caching data supplier inside the container.
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* <p>
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* If the supplier is called the value is cached according to the implementation of the container.
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* What the container does with the supplier depends on the implementation.
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*
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* @param key Key of type T that identifies the data and will be used later when the data needs to be fetched.
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* @param supplier Supplier to store
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* @param <T> Type of the object
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*/
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<T> void putCachingSupplier(Key<T> key, Supplier<T> supplier);
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/**
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* Check if a Value with the given Key has been placed into the container.
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*
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* @param key Key that identifies the data.
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* @param <T> Type of the object returned by the Value if it is present.
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* @return true if found, false if not.
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*/
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<T> boolean supports(Key<T> key);
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/**
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* Get an Optional of the Value identified by the Key.
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* <p>
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* It is recommended to check if the Optional is present as null values will be empty.
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*
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* @param key Key that identifies the Value
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* @param <T> Type of the object returned by Value
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* @return Optional of the object if the key is registered and key matches the type of the object. Otherwise empty.
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*/
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<T> Optional<T> getValue(Key<T> key);
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/**
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* Get data identified by the Key, or throw an exception.
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* <p>
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* It is recommended to use {@link DataContainer#supports(Key)} before using this method.
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*
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* @param key Key that identifies the Value
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* @param <T> Type of the object returned by Value
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* @return the value
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* @throws IllegalArgumentException If the key is not supported.
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*/
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<T> T getUnsafe(Key<T> key);
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/**
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* Get formatted Value identified by the Key.
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*
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* @param key Key that identifies the Value
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* @param formatter Formatter for the Optional returned by {@link DataContainer#getValue(Key)}
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* @param <T> Type of the object returned by Value
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* @return Optional of the object if the key is registered and key matches the type of the object. Otherwise empty.
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*/
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default <T> String getFormatted(Key<T> key, Formatter<Optional<T>> formatter) {
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Optional<T> value = getValue(key);
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return formatter.apply(value);
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}
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/**
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* Get formatted Value identified by the Key, or throw an exception.
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* <p>
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* It is recommended to use {@link DataContainer#supports(Key)} before using this method.
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*
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* @param key Key that identifies the Value
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* @param formatter Formatter for the value
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* @param <T> Type of the object returned by Value
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* @return the value
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* @throws IllegalArgumentException If the key is not supported.
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*/
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default <T> String getFormattedUnsafe(Key<T> key, Formatter<T> formatter) {
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T value = getUnsafe(key);
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return formatter.apply(value);
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}
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/**
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* Place all values from given DataContainer into this container.
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*
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* @param dataContainer Container with values.
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*/
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void putAll(DataContainer dataContainer);
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/**
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* Clear the container of all data.
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*/
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void clear();
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/**
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* Return a Key - Value Map of the data in the container.
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* <p>
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* This method may call blocking methods if underlying implementation uses the given Suppliers.
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*
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* @return Map: Key - Object
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*/
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Map<Key, Object> getMap();
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}
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