AriaLyy
7 years ago
parent
f483f4d43f
commit
4514272f06
@ -0,0 +1,208 @@ |
||||
/* |
||||
* Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
|
||||
* |
||||
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||
* you may not use this file except in compliance with the License. |
||||
* You may obtain a copy of the License at |
||||
* |
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
* |
||||
* Unless required by applicable law or agreed to in writing, software |
||||
* distributed under the License is distributed on an "AS IS" BASIS, |
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||
* See the License for the specific language governing permissions and |
||||
* limitations under the License. |
||||
*/ |
||||
package com.arialyy.aria.orm; |
||||
|
||||
import android.database.sqlite.SQLiteDatabase; |
||||
import android.text.TextUtils; |
||||
import com.arialyy.aria.util.CommonUtil; |
||||
import java.lang.reflect.Field; |
||||
import java.lang.reflect.Modifier; |
||||
import java.util.ArrayList; |
||||
import java.util.HashMap; |
||||
import java.util.List; |
||||
import java.util.Map; |
||||
import java.util.Set; |
||||
|
||||
/** |
||||
* Created by Aria.Lao on 2017/7/24. |
||||
* sql工具 |
||||
*/ |
||||
final class SqlUtil { |
||||
|
||||
/** |
||||
* 获取一对一参数 |
||||
*/ |
||||
static String getOneToOneParams(Field field) { |
||||
OneToOne oneToOne = field.getAnnotation(OneToOne.class); |
||||
if (oneToOne == null) { |
||||
throw new IllegalArgumentException("@OneToOne注解的对象必须要有@Primary注解的字段"); |
||||
} |
||||
return oneToOne.table().getName() + "$$" + oneToOne.key(); |
||||
} |
||||
|
||||
/** |
||||
* 获取List一对多参数 |
||||
* |
||||
* @param field list反射字段 |
||||
*/ |
||||
static String getOneToManyElementParams(Field field) { |
||||
OneToMany oneToMany = field.getAnnotation(OneToMany.class); |
||||
if (oneToMany == null) { |
||||
throw new IllegalArgumentException("一对多元素必须被@OneToMany注解"); |
||||
} |
||||
//关联的表名
|
||||
String tableName = oneToMany.table().getName(); |
||||
//关联的字段
|
||||
String key = oneToMany.key(); |
||||
return tableName + "$$" + key; |
||||
} |
||||
|
||||
/** |
||||
* 列表数据转字符串 |
||||
* |
||||
* @param field list反射字段 |
||||
*/ |
||||
static String list2Str(DbEntity dbEntity, Field field) throws IllegalAccessException { |
||||
NormalList normalList = field.getAnnotation(NormalList.class); |
||||
if (normalList == null) { |
||||
throw new IllegalArgumentException("List中元素必须被@NormalList注解"); |
||||
} |
||||
List list = (List) field.get(dbEntity); |
||||
if (list == null || list.isEmpty()) return ""; |
||||
StringBuilder sb = new StringBuilder(); |
||||
for (Object aList : list) { |
||||
sb.append(aList).append("$$"); |
||||
} |
||||
return sb.toString(); |
||||
} |
||||
|
||||
/** |
||||
* 字符串转列表 |
||||
* |
||||
* @param str 数据库中的字段 |
||||
* @return 如果str为null，则返回null |
||||
*/ |
||||
static List str2List(String str, Field field) { |
||||
NormalList normalList = field.getAnnotation(NormalList.class); |
||||
if (normalList == null) { |
||||
throw new IllegalArgumentException("List中元素必须被@NormalList注解"); |
||||
} |
||||
if (TextUtils.isEmpty(str)) return null; |
||||
String[] datas = str.split("$$"); |
||||
List list = new ArrayList(); |
||||
String type = normalList.clazz().getName(); |
||||
for (String data : datas) { |
||||
list.add(checkData(data, type)); |
||||
} |
||||
return list; |
||||
} |
||||
|
||||
/** |
||||
* 字符串转Map，只支持 |
||||
* <pre> |
||||
* {@code Map<String, String>} |
||||
* </pre> |
||||
*/ |
||||
static Map<String, String> str2Map(String str) { |
||||
Map<String, String> map = new HashMap<>(); |
||||
if (TextUtils.isEmpty(str)) { |
||||
return map; |
||||
} |
||||
String[] element = str.split(","); |
||||
for (String data : element) { |
||||
String[] s = data.split("\\$"); |
||||
map.put(s[0], s[1]); |
||||
} |
||||
return map; |
||||
} |
||||
|
||||
/** |
||||
* Map转字符串，只支持 |
||||
* <pre> |
||||
* {@code Map<String, String>} |
||||
* </pre> |
||||
*/ |
||||
static String map2Str(Map<String, String> map) { |
||||
StringBuilder sb = new StringBuilder(); |
||||
Set<String> keys = map.keySet(); |
||||
for (String key : keys) { |
||||
sb.append(key).append("$").append(map.get(key)).append(","); |
||||
} |
||||
String str = sb.toString(); |
||||
return TextUtils.isEmpty(str) ? str : str.substring(0, str.length() - 1); |
||||
} |
||||
|
||||
|
||||
|
||||
/** |
||||
* @return true 忽略该字段 |
||||
*/ |
||||
static boolean ignoreField(Field field) { |
||||
// field.isSynthetic(), 使用as热启动App时，AS会自动给你的class添加change字段
|
||||
Ignore ignore = field.getAnnotation(Ignore.class); |
||||
int modifiers = field.getModifiers(); |
||||
return (ignore != null && ignore.value()) |
||||
|| field.getName().equals("rowID") |
||||
|| field.isSynthetic() |
||||
|| Modifier.isStatic(modifiers) |
||||
|| Modifier.isFinal(modifiers); |
||||
} |
||||
|
||||
/** |
||||
* 判断是否一对多注解 |
||||
*/ |
||||
static boolean isOneToMany(Field field) { |
||||
OneToMany oneToMany = field.getAnnotation(OneToMany.class); |
||||
return oneToMany != null; |
||||
} |
||||
|
||||
/** |
||||
* 判断是否是一对一注解 |
||||
*/ |
||||
static boolean isOneToOne(Field field) { |
||||
OneToOne oneToOne = field.getAnnotation(OneToOne.class); |
||||
return oneToOne != null; |
||||
} |
||||
|
||||
/** |
||||
* 判断是否是主键 |
||||
*/ |
||||
static boolean isPrimary(Field field) { |
||||
Primary pk = field.getAnnotation(Primary.class); |
||||
return pk != null; |
||||
} |
||||
|
||||
private static Object checkData(String type, String data) { |
||||
switch (type) { |
||||
case "String": |
||||
return data; |
||||
case "int": |
||||
case "Integer": |
||||
return Integer.parseInt(data); |
||||
case "double": |
||||
case "Double": |
||||
return Double.parseDouble(data); |
||||
case "float": |
||||
case "Float": |
||||
return Float.parseFloat(data); |
||||
} |
||||
return null; |
||||
} |
||||
|
||||
|
||||
/** |
||||
* 查找class的主键字段 |
||||
* |
||||
* @return 返回主键字段名 |
||||
*/ |
||||
static String getPrimaryName(Class<? extends DbEntity> clazz) { |
||||
List<Field> fields = CommonUtil.getAllFields(clazz); |
||||
for (Field field : fields) { |
||||
if (isPrimary(field)) return field.getName(); |
||||
} |
||||
return null; |
||||
} |
||||
} |
||||
Loading…
Reference in new issue