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Another file not required.
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package com.massivecraft.factions.zcore.util;
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import java.io.File;
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import java.lang.reflect.Type;
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import java.util.logging.Level;
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import com.massivecraft.factions.zcore.MPlugin;
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import com.massivecraft.mcore.util.DiscUtil;
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// TODO: Give better name and place to differenciate from the entity-orm-ish system in "com.massivecraft.core.persist".
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public class Persist {
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private MPlugin p;
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public Persist(MPlugin p)
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{
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this.p = p;
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}
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// ------------------------------------------------------------ //
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// GET NAME - What should we call this type of object?
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// ------------------------------------------------------------ //
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public static String getName(Class<?> clazz)
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{
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return clazz.getSimpleName().toLowerCase();
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}
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public static String getName(Object o)
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{
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return getName(o.getClass());
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}
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public static String getName(Type type)
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{
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return getName(type.getClass());
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}
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// ------------------------------------------------------------ //
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// GET FILE - In which file would we like to store this object?
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// ------------------------------------------------------------ //
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public File getFile(String name)
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{
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return new File(p.getDataFolder(), name+".json");
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}
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public File getFile(Class<?> clazz)
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{
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return getFile(getName(clazz));
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}
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public File getFile(Object obj)
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{
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return getFile(getName(obj));
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}
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public File getFile(Type type)
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{
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return getFile(getName(type));
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}
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// NICE WRAPPERS
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public <T> T loadOrSaveDefault(T def, Class<T> clazz)
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{
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return loadOrSaveDefault(def, clazz, getFile(clazz));
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}
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public <T> T loadOrSaveDefault(T def, Class<T> clazz, String name)
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{
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return loadOrSaveDefault(def, clazz, getFile(name));
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}
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public <T> T loadOrSaveDefault(T def, Class<T> clazz, File file)
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{
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if ( ! file.exists())
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{
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p.log("Creating default: "+file);
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this.save(def, file);
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return def;
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}
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T loaded = this.load(clazz, file);
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if (loaded == null)
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{
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p.log(Level.WARNING, "Using default as I failed to load: "+file);
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// backup bad file, so user can attempt to recover their changes from it
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File backup = new File(file.getPath()+"_bad");
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if (backup.exists()) backup.delete();
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p.log(Level.WARNING, "Backing up copy of bad file to: "+backup);
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file.renameTo(backup);
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return def;
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}
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return loaded;
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}
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// SAVE
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public boolean save(Object instance)
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{
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return save(instance, getFile(instance));
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}
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public boolean save(Object instance, String name)
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{
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return save(instance, getFile(name));
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}
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public boolean save(Object instance, File file)
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{
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return DiscUtil.writeCatch(file, p.gson.toJson(instance));
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}
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// LOAD BY CLASS
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public <T> T load(Class<T> clazz)
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{
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return load(clazz, getFile(clazz));
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}
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public <T> T load(Class<T> clazz, String name)
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{
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return load(clazz, getFile(name));
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}
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public <T> T load(Class<T> clazz, File file)
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{
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String content = DiscUtil.readCatch(file);
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if (content == null)
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{
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return null;
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}
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try
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{
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T instance = p.gson.fromJson(content, clazz);
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return instance;
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}
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catch (Exception ex)
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{ // output the error message rather than full stack trace; error parsing the file, most likely
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p.log(Level.WARNING, ex.getMessage());
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}
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return null;
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}
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// LOAD BY TYPE
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@SuppressWarnings("unchecked")
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public <T> T load(Type typeOfT, String name)
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{
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return (T) load(typeOfT, getFile(name));
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}
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@SuppressWarnings("unchecked")
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public <T> T load(Type typeOfT, File file)
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{
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String content = DiscUtil.readCatch(file);
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if (content == null) {
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return null;
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}
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return (T) p.gson.fromJson(content, typeOfT);
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}
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}
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