com.github.youyinnn.youdbutils.dao.model.ModelTableMessage Maven / Gradle / Ivy

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package com.github.youyinnn.youdbutils.dao.model;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Set;

/**
 * 存储系统中所有Model字段和Table列名的映射信息,并提供获取方法.
 * 以Model类名为键,其类中所有字段组成的列表为值,存储所有Model类的该信息至一个map中.
 * 以Table表名为键,其表中所有列名组成的列表为值,存储所有在系统中有该Model名的Table表的该信息至一个map中.
 * 将这两者信息注册为FieldMapping类,其他类获取FieldMapping就从本类提供.
 *
 * @author youyinnn
 */
public class ModelTableMessage {

    /**
     * 里面保存了所有model和其所有model字段组成的列表的键值对
     */
    private static HashMap> allModelField = new HashMap<>();

    /**
     * 里面保存了所有table和其所有model字段组成的列表的键值对
     */
    private static HashMap> allTableField = new HashMap<>();

    /**
     * 里面保存了所有的model名和其对应的FieldMapping对象组成的键值对
     */
    private static HashMap allModelTableFieldMapping = new HashMap<>();

    /**
     * 把model和其对应field组成的列表作为键值对保存到allModelField当中
     *
     * @param modelClassName the model class name
     * @param fieldList      the field list
     */
    public static void registerModelFieldMessage(String modelClassName, ArrayList fieldList) {
        allModelField.put(modelClassName,fieldList);
    }

    /**
     * 把table和其对应field组成的列表作为键值对保存到allTableField当中
     *
     * @param tableName the table name
     * @param fieldList the field list
     */
    public static void registerTableFieldMessage(String tableName, ArrayList fieldList) {
        allTableField.put(tableName,fieldList);
    }

    /**
     * 获取对应Model类的FieldMapping对象
     *
     * @param modelName the model name
     * @return the field map
     */
    public static FieldMapping getFieldMapping(String modelName) {
        return allModelTableFieldMapping.get(modelName);
    }

    /**
     * 初始化model对应的FieldMapping对象 并添加到allFieldMapping当中
     */
    public static void setFieldMapping() {
        for (String modelName : allModelField.keySet()) {
            allModelTableFieldMapping.put(modelName,
                    new FieldMapping(modelName,allModelField.get(modelName),allTableField.get(modelName)));
        }
    }

    /**
     * 返回一个map 里面保存了所有model和其所有model字段组成的列表的键值对
     *
     * @return the model field
     */
    public static HashMap> getAllModelField() {
        return allModelField;
    }

    /**
     * 返回一个map 里面保存了所有table和其所有model字段组成的列表的键值对
     *
     * @return the table field
     */
    public static HashMap> getAllTableField() {
        return allTableField;
    }

    /**
     * 获取某个model对应的字段list
     *
     * @param modelClassName the model class name
     * @return the model field list
     */
    public static ArrayList getModelFieldList(String modelClassName) {
        return allModelField.get(modelClassName);
    }

    /**
     * 返回所有的Model名字组成的set集合
     *
     * @return the model field set
     */
    public static Set getAllModelNameSet() {
        return allModelField.keySet();
    }

    /**
     * 返回一个map 里面保存了所有的model名和其对应的FieldMapping对象组成的键值对
     *
     * @return the field mapping
     */
    public static HashMap getAllModelTableFieldMapping() {
        return allModelTableFieldMapping;
    }
}