/*
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* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
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* Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
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*/
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package com.megatim.dynamicjsonparser.extender;
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import com.megatim.dynamicjsonparser.pojo.JsonField;
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import java.io.Serializable;
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import java.lang.reflect.Modifier;
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import java.time.LocalDate;
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import java.util.List;
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import org.burningwave.core.Virtual;
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import org.burningwave.core.assembler.ComponentContainer;
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import org.burningwave.core.assembler.ComponentSupplier;
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import org.burningwave.core.classes.AnnotationSourceGenerator;
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import org.burningwave.core.classes.ClassFactory;
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import org.burningwave.core.classes.ClassSourceGenerator;
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import org.burningwave.core.classes.FunctionSourceGenerator;
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import org.burningwave.core.classes.GenericSourceGenerator;
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import org.burningwave.core.classes.TypeDeclarationSourceGenerator;
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import org.burningwave.core.classes.UnitSourceGenerator;
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import org.burningwave.core.classes.VariableSourceGenerator;
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/**
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*
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* @author ASUS
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*/
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public class RuntimeClassBuilder {
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/**
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* Méthode qui crée dynamiquement une classe Java
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* @param packagename : nom du package de la classe
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* @param fields : liste des chmaps de la classe
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* @param classPathFolder : chemin où sera stocké la classe sur le disque
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* @return
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*/
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public static UnitSourceGenerator createRuntimeClass(final String packagename, List<JsonField> fields,String classPathFolder) {
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final String className = fields.get(0).getClassName();
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//Ajout modificateur d'accès de la classe
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ClassSourceGenerator clazz = ClassSourceGenerator
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.create(TypeDeclarationSourceGenerator.create(className))
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.addModifier(Modifier.PUBLIC);
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//Ajout des interfaces à implémenter
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clazz.addConcretizedType(Serializable.class)
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.addConcretizedType(Virtual.class);
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//Déclaration des champs de la classe
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fields.forEach(f -> {
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//Si le type du champ est encore à construire
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if (f.getDynamicFields() != null && !f.getDynamicFields().isEmpty()) {
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//Appel récursif afin de construire le sous-type
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UnitSourceGenerator subUnitSG = createRuntimeClass(packagename, f.getDynamicFields(),classPathFolder);
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ComponentSupplier componentSupplier = ComponentContainer.getInstance();
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ClassFactory classFactory = componentSupplier.getClassFactory();
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try ( ClassFactory.ClassRetriever classRetriever = classFactory.loadOrBuildAndDefine(subUnitSG)) {
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Class classOfField = classRetriever.get(packagename + "." + f.getDynamicFields().get(0).getClassName());
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f.setClazz(classOfField);
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}
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}
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//Si le type du champ est connu
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if (f.getClazz() != null) {
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if (f.isCollection()) {
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clazz.addField(VariableSourceGenerator.create(TypeDeclarationSourceGenerator.create(List.class).addGeneric(GenericSourceGenerator.create(f.getClazz())), f.getName())
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.addModifier(Modifier.PRIVATE));
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} else {
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Class realClass = f.getClazz().equals(LocalDate.class) ? String.class : f.getClazz();
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clazz.addField(
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VariableSourceGenerator.create(realClass, f.getName())
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.addModifier(Modifier.PRIVATE)
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);
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}
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}
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});
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//Déclaration du constructeur sans argument
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clazz.addConstructor(FunctionSourceGenerator.create().addModifier(Modifier.PUBLIC).addBodyCodeLine());
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fields.forEach(f -> {
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String fieldName = String.valueOf(f.getName().charAt(0)).toUpperCase() + f.getName().substring(1);
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if (f.getClazz() != null) {
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//Déclaration du getter de chaque attribut
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FunctionSourceGenerator getter = FunctionSourceGenerator.create("get" + fieldName)
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.addModifier(Modifier.PUBLIC)
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.addBodyCodeLine("return this." + f.getName() + ";");
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Class realClass = f.getClazz().equals(LocalDate.class) ? String.class : f.getClazz();
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if(f.isCollection()) {
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getter.setReturnType(TypeDeclarationSourceGenerator.create(List.class).addGeneric(GenericSourceGenerator.create(realClass)));
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} else {
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getter.setReturnType(realClass);
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}
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clazz.addMethod(getter);
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//Déclaration du setter de chaque attribut
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FunctionSourceGenerator setter = FunctionSourceGenerator.create("set" + fieldName)
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.addModifier(Modifier.PUBLIC)
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.setReturnType(void.class)
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.addBodyCodeLine("this." + f.getName() + " = " + f.getName() + ";");
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if(f.isCollection()) {
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setter.addParameter(VariableSourceGenerator.create(TypeDeclarationSourceGenerator.create(List.class).addGeneric(GenericSourceGenerator.create(realClass)), f.getName()));
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} else {
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setter.addParameter(VariableSourceGenerator.create(realClass, f.getName()));
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}
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clazz.addMethod(setter);
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}
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});
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//Définition de la valeur de retour de la méthode toString()
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StringBuilder toString = new StringBuilder();
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for (JsonField f : fields) {
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toString.append("this.").append(f.getName()).append("+").append("\",\"").append("+");
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}
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//Retirer les caractères +","+
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toString.replace(toString.length() - 5, toString.length(), "");
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//Déclaration de la méthode toString
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clazz.addMethod(
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FunctionSourceGenerator.create("toString")
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.addAnnotation(AnnotationSourceGenerator.create(Override.class))
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.addModifier(Modifier.PUBLIC)
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.setReturnType(String.class)
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.addBodyCodeLine("return " + toString + ";")
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);
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UnitSourceGenerator unitSG = UnitSourceGenerator.create(packagename).addClass(clazz);
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unitSG.make();
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//Enregistre la classe sur le disque
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if(classPathFolder != null && !classPathFolder.isEmpty()) {
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unitSG.storeToClassPath(classPathFolder);
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}
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return unitSG;
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}
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}
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