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·3206 lines (2788 loc) · 104 KB
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/*Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
This source code is licensed under the Apache License Version 2.0.*/
package apijson.orm;
import static apijson.JSONObject.KEY_CACHE;
import static apijson.JSONObject.KEY_COLUMN;
import static apijson.JSONObject.KEY_COMBINE;
import static apijson.JSONObject.KEY_DATABASE;
import static apijson.JSONObject.KEY_EXPLAIN;
import static apijson.JSONObject.KEY_FROM;
import static apijson.JSONObject.KEY_GROUP;
import static apijson.JSONObject.KEY_HAVING;
import static apijson.JSONObject.KEY_ID;
import static apijson.JSONObject.KEY_JSON;
import static apijson.JSONObject.KEY_ORDER;
import static apijson.JSONObject.KEY_RAW;
import static apijson.JSONObject.KEY_ROLE;
import static apijson.JSONObject.KEY_SCHEMA;
import static apijson.JSONObject.KEY_USER_ID;
import static apijson.RequestMethod.DELETE;
import static apijson.RequestMethod.GET;
import static apijson.RequestMethod.GETS;
import static apijson.RequestMethod.HEADS;
import static apijson.RequestMethod.POST;
import static apijson.RequestMethod.PUT;
import static apijson.SQL.AND;
import static apijson.SQL.NOT;
import static apijson.SQL.OR;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Pattern;
import javax.activation.UnsupportedDataTypeException;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.annotation.JSONField;
import apijson.JSON;
import apijson.JSONResponse;
import apijson.Log;
import apijson.NotNull;
import apijson.RequestMethod;
import apijson.RequestRole;
import apijson.SQL;
import apijson.StringUtil;
import apijson.orm.exception.NotExistException;
import apijson.orm.model.Access;
import apijson.orm.model.Column;
import apijson.orm.model.Document;
import apijson.orm.model.ExtendedProperty;
import apijson.orm.model.Function;
import apijson.orm.model.PgAttribute;
import apijson.orm.model.PgClass;
import apijson.orm.model.Request;
import apijson.orm.model.Response;
import apijson.orm.model.SysColumn;
import apijson.orm.model.SysTable;
import apijson.orm.model.Table;
import apijson.orm.model.Test;
import apijson.orm.model.TestRecord;
/**config sql for JSON Request
* @author Lemon
*/
public abstract class AbstractSQLConfig implements SQLConfig {
private static final String TAG = "AbstractSQLConfig";
public static String DEFAULT_DATABASE = DATABASE_MYSQL;
public static String DEFAULT_SCHEMA = "sys";
public static String PREFFIX_DISTINCT = "DISTINCT ";
// * 和 / 不能同时出现，防止 /* */ 段注释！ # 和 -- 不能出现，防止行注释！ ; 不能出现，防止隔断SQL语句！空格不能出现，防止 CRUD,DROP,SHOW TABLES等语句！
private static final Pattern PATTERN_RANGE;
private static final Pattern PATTERN_FUNCTION;
/**
* 表名映射，隐藏真实表名，对安全要求很高的表可以这么做
*/
public static final Map<String, String> TABLE_KEY_MAP;
public static final List<String> CONFIG_TABLE_LIST;
public static final List<String> DATABASE_LIST;
// 自定义原始 SQL 片段 Map<key, substring>：当 substring 为 null 时忽略；当 substring 为 "" 时整个 value 是 raw SQL；其它情况则只是 substring 这段为 raw SQL
public static final Map<String, String> RAW_MAP;
static { // 凡是 SQL 边界符、分隔符、注释符 都不允许，例如 ' " ` ( ) ; # -- ，以免拼接 SQL 时被注入意外可执行指令
PATTERN_RANGE = Pattern.compile("^[0-9%,!=\\<\\>/\\.\\+\\-\\*\\^]+$"); // ^[a-zA-Z0-9_*%!=<>(),"]+$ 导致 exists(select*from(Comment)) 通过！
PATTERN_FUNCTION = Pattern.compile("^[A-Za-z0-9%,:_@&~!=\\<\\>\\|\\[\\]\\{\\} /\\.\\+\\-\\*\\^\\?\\$]+$"); //TODO 改成更好的正则，校验前面为单词，中间为操作符，后面为值
TABLE_KEY_MAP = new HashMap<String, String>();
TABLE_KEY_MAP.put(Table.class.getSimpleName(), Table.TABLE_NAME);
TABLE_KEY_MAP.put(Column.class.getSimpleName(), Column.TABLE_NAME);
TABLE_KEY_MAP.put(PgClass.class.getSimpleName(), PgClass.TABLE_NAME);
TABLE_KEY_MAP.put(PgAttribute.class.getSimpleName(), PgAttribute.TABLE_NAME);
TABLE_KEY_MAP.put(SysTable.class.getSimpleName(), SysTable.TABLE_NAME);
TABLE_KEY_MAP.put(SysColumn.class.getSimpleName(), SysColumn.TABLE_NAME);
TABLE_KEY_MAP.put(ExtendedProperty.class.getSimpleName(), ExtendedProperty.TABLE_NAME);
CONFIG_TABLE_LIST = new ArrayList<>(); // Table, Column 等是系统表 AbstractVerifier.SYSTEM_ACCESS_MAP.keySet());
CONFIG_TABLE_LIST.add(Function.class.getSimpleName());
CONFIG_TABLE_LIST.add(Request.class.getSimpleName());
CONFIG_TABLE_LIST.add(Response.class.getSimpleName());
CONFIG_TABLE_LIST.add(Test.class.getSimpleName());
CONFIG_TABLE_LIST.add(Access.class.getSimpleName());
CONFIG_TABLE_LIST.add(Document.class.getSimpleName());
CONFIG_TABLE_LIST.add(TestRecord.class.getSimpleName());
DATABASE_LIST = new ArrayList<>();
DATABASE_LIST.add(DATABASE_MYSQL);
DATABASE_LIST.add(DATABASE_POSTGRESQL);
DATABASE_LIST.add(DATABASE_SQLSERVER);
DATABASE_LIST.add(DATABASE_ORACLE);
DATABASE_LIST.add(DATABASE_DB2);
RAW_MAP = new LinkedHashMap<>(); // 保证顺序，避免配置冲突等意外情况
}
@Override
public boolean limitSQLCount() {
return Log.DEBUG == false || AbstractVerifier.SYSTEM_ACCESS_MAP.containsKey(getTable()) == false;
}
@NotNull
@Override
public String getIdKey() {
return KEY_ID;
}
@NotNull
@Override
public String getUserIdKey() {
return KEY_USER_ID;
}
private Object id; //Table的id
private RequestMethod method; //操作方法
private boolean prepared = true; //预编译
private boolean main = true;
/**
* TODO 被关联的表通过就忽略关联的表？(这个不行 User:{"sex@":"/Comment/toId"})
*/
private RequestRole role; //发送请求的用户的角色
private boolean distinct = false;
private String database; //表所在的数据库类型
private String schema; //表所在的数据库名
private String table; //表名
private String alias; //表别名
private String group; //分组方式的字符串数组，','分隔
private String having; //聚合函数的字符串数组，','分隔
private String order; //排序方式的字符串数组，','分隔
private List<String> raw; //需要保留原始 SQL 的字段，','分隔
private List<String> json; //需要转为 JSON 的字段，','分隔
private Subquery from; //子查询临时表
private List<String> column; //表内字段名(或函数名，仅查询操作可用)的字符串数组，','分隔
private List<List<Object>> values; //对应表内字段的值的字符串数组，','分隔
private Map<String, Object> content; //Request内容，key:value形式，column = content.keySet()，values = content.values()
private Map<String, Object> where; //筛选条件，key:value形式
private Map<String, List<String>> combine; //条件组合，{ "&":[key], "|":[key], "!":[key] }
//array item <<<<<<<<<<
private int count; //Table数量
private int page; //Table所在页码
private int position; //Table在[]中的位置
private int query; //JSONRequest.query
private int type; //ObjectParser.type
private int cache;
private boolean explain;
private List<Join> joinList; //连表 配置列表
//array item >>>>>>>>>>
private boolean test; //测试
private String procedure;
public SQLConfig setProcedure(String procedure) {
this.procedure = procedure;
return this;
}
public String getProcedure() {
return procedure;
}
public AbstractSQLConfig(RequestMethod method) {
setMethod(method);
}
public AbstractSQLConfig(RequestMethod method, String table) {
this(method);
setTable(table);
}
public AbstractSQLConfig(RequestMethod method, int count, int page) {
this(method);
setCount(count);
setPage(page);
}
@NotNull
@Override
public RequestMethod getMethod() {
if (method == null) {
method = GET;
}
return method;
}
@Override
public AbstractSQLConfig setMethod(RequestMethod method) {
this.method = method;
return this;
}
@Override
public boolean isPrepared() {
return prepared;
}
@Override
public AbstractSQLConfig setPrepared(boolean prepared) {
this.prepared = prepared;
return this;
}
@Override
public boolean isMain() {
return main;
}
@Override
public AbstractSQLConfig setMain(boolean main) {
this.main = main;
return this;
}
@Override
public Object getId() {
return id;
}
@Override
public AbstractSQLConfig setId(Object id) {
this.id = id;
return this;
}
@Override
public RequestRole getRole() {
//不能 @NotNull , AbstractParser#getSQLObject 内当getRole() == null时填充默认值
return role;
}
public AbstractSQLConfig setRole(String roleName) throws Exception {
return setRole(RequestRole.get(roleName));
}
@Override
public AbstractSQLConfig setRole(RequestRole role) {
this.role = role;
return this;
}
@Override
public boolean isDistinct() {
return distinct;
}
@Override
public SQLConfig setDistinct(boolean distinct) {
this.distinct = distinct;
return this;
}
@Override
public String getDatabase() {
return database;
}
@Override
public SQLConfig setDatabase(String database) {
this.database = database;
return this;
}
/**
* @return db == null ? DEFAULT_DATABASE : db
*/
@NotNull
public String getSQLDatabase() {
String db = getDatabase();
return db == null ? DEFAULT_DATABASE : db; // "" 表示已设置，不需要用全局默认的 StringUtil.isEmpty(db, false)) {
}
@Override
public boolean isMySQL() {
return isMySQL(getSQLDatabase());
}
public static boolean isMySQL(String db) {
return DATABASE_MYSQL.equals(db);
}
@Override
public boolean isPostgreSQL() {
return isPostgreSQL(getSQLDatabase());
}
public static boolean isPostgreSQL(String db) {
return DATABASE_POSTGRESQL.equals(db);
}
@Override
public boolean isSQLServer() {
return isSQLServer(getSQLDatabase());
}
public static boolean isSQLServer(String db) {
return DATABASE_SQLSERVER.equals(db);
}
@Override
public boolean isOracle() {
return isOracle(getSQLDatabase());
}
public static boolean isOracle(String db) {
return DATABASE_ORACLE.equals(db);
}
@Override
public boolean isDb2() {
return isDb2(getSQLDatabase());
}
public static boolean isDb2(String db) {
return DATABASE_DB2.equals(db);
}
@Override
public String getQuote() {
return isMySQL() ? "`" : "\"";
}
@Override
public String getSchema() {
return schema;
}
/**
* @param sqlTable
* @return
*/
@NotNull
public String getSQLSchema() {
String table = getTable();
//强制，避免因为全局默认的 @schema 自动填充进来，导致这几个类的 schema 为 sys 等其它值
if (Table.TAG.equals(table) || Column.TAG.equals(table)) {
return SCHEMA_INFORMATION; //MySQL, PostgreSQL, SQL Server 都有的
}
if (PgClass.TAG.equals(table) || PgAttribute.TAG.equals(table)) {
return ""; //PostgreSQL 的 pg_class 和 pg_attribute 表好像不属于任何 Schema
}
if (SysTable.TAG.equals(table) || SysColumn.TAG.equals(table) || ExtendedProperty.TAG.equals(table)) {
return SCHEMA_SYS; //SQL Server 在 sys 中的属性比 information_schema 中的要全，能拿到注释
}
String sch = getSchema();
return sch == null ? DEFAULT_SCHEMA : sch;
}
@Override
public AbstractSQLConfig setSchema(String schema) {
if (schema != null) {
String quote = getQuote();
String s = schema.startsWith(quote) && schema.endsWith(quote) ? schema.substring(1, schema.length() - 1) : schema;
if (StringUtil.isEmpty(s, true) == false && StringUtil.isName(s) == false) {
throw new IllegalArgumentException("@schema:value 中value必须是1个单词！");
}
}
this.schema = schema;
return this;
}
/**请求传进来的Table名
* @return
* @see {@link #getSQLTable()}
*/
@Override
public String getTable() {
return table;
}
/**数据库里的真实Table名
* 通过 {@link #TABLE_KEY_MAP} 映射
* @return
*/
@JSONField(serialize = false)
@Override
public String getSQLTable() {
// String t = TABLE_KEY_MAP.containsKey(table) ? TABLE_KEY_MAP.get(table) : table;
//如果要强制小写，则可在子类重写这个方法再 toLowerCase return DATABASE_POSTGRESQL.equals(getDatabase()) ? t.toLowerCase() : t;
return TABLE_KEY_MAP.containsKey(table) ? TABLE_KEY_MAP.get(table) : table;
}
@JSONField(serialize = false)
@Override
public String getTablePath() {
String q = getQuote();
String sch = getSQLSchema();
String sqlTable = getSQLTable();
return (StringUtil.isEmpty(sch, true) ? "" : q + sch + q + ".") + q + sqlTable + q + ( isKeyPrefix() ? " AS " + getAliasWithQuote() : "");
}
@Override
public AbstractSQLConfig setTable(String table) { //Table已经在Parser中校验，所以这里不用防SQL注入
this.table = table;
return this;
}
@Override
public String getAlias() {
return alias;
}
@Override
public AbstractSQLConfig setAlias(String alias) {
this.alias = alias;
return this;
}
public String getAliasWithQuote() {
String a = getAlias();
if (StringUtil.isEmpty(a, true)) {
a = getTable();
}
String q = getQuote();
//getTable 不能小写，因为Verifier用大小写敏感的名称判断权限
//如果要强制小写，则可在子类重写这个方法再 toLowerCase return q + (DATABASE_POSTGRESQL.equals(getDatabase()) ? a.toLowerCase() : a) + q;
return q + a + q;
}
@Override
public String getGroup() {
return group;
}
public AbstractSQLConfig setGroup(String... keys) {
return setGroup(StringUtil.getString(keys));
}
@Override
public AbstractSQLConfig setGroup(String group) {
this.group = group;
return this;
}
@JSONField(serialize = false)
public String getGroupString(boolean hasPrefix) {
//加上子表的 group
String joinGroup = "";
if (joinList != null) {
SQLConfig cfg;
String c;
boolean first = true;
for (Join j : joinList) {
if (j.isAppJoin()) {
continue;
}
cfg = j.isLeftOrRightJoin() ? j.getOuterConfig() : j.getJoinConfig();
if (StringUtil.isEmpty(cfg.getAlias(), true)) {
cfg.setAlias(cfg.getTable());
}
c = ((AbstractSQLConfig) cfg).getGroupString(false);
if (StringUtil.isEmpty(c, true) == false) {
joinGroup += (first ? "" : ", ") + c;
first = false;
}
}
}
group = StringUtil.getTrimedString(group);
String[] keys = StringUtil.split(group);
if (keys == null || keys.length <= 0) {
return StringUtil.isEmpty(joinGroup, true) ? "" : (hasPrefix ? " GROUP BY " : "") + joinGroup;
}
for (int i = 0; i < keys.length; i++) {
if (isPrepared()) { //不能通过 ? 来代替，因为SQLExecutor statement.setString后 GROUP BY 'userId' 有单引号，只能返回一条数据，必须去掉单引号才行！
if (StringUtil.isName(keys[i]) == false) {
throw new IllegalArgumentException("@group:value 中 value里面用 , 分割的每一项都必须是1个单词！并且不要有空格！");
}
}
keys[i] = getKey(keys[i]);
}
return (hasPrefix ? " GROUP BY " : "") + StringUtil.concat(StringUtil.getString(keys), joinGroup, ", ");
}
@Override
public String getHaving() {
return having;
}
public AbstractSQLConfig setHaving(String... conditions) {
return setHaving(StringUtil.getString(conditions));
}
@Override
public AbstractSQLConfig setHaving(String having) {
this.having = having;
return this;
}
/**TODO @having 改为默认 | 或连接，且支持 @having: { "key1>": 1, "key{}": "length(key2)>0", "@combine": "key1,key2" }
* @return HAVING conditoin0 AND condition1 OR condition2 ...
*/
@JSONField(serialize = false)
public String getHavingString(boolean hasPrefix) {
//加上子表的 having
String joinHaving = "";
if (joinList != null) {
SQLConfig cfg;
String c;
boolean first = true;
for (Join j : joinList) {
if (j.isAppJoin()) {
continue;
}
cfg = j.isLeftOrRightJoin() ? j.getOuterConfig() : j.getJoinConfig();
if (StringUtil.isEmpty(cfg.getAlias(), true)) {
cfg.setAlias(cfg.getTable());
}
c = ((AbstractSQLConfig) cfg).getHavingString(false);
if (StringUtil.isEmpty(c, true) == false) {
joinHaving += (first ? "" : ", ") + c;
first = false;
}
}
}
String[] keys = StringUtil.split(getHaving(), ";");
if (keys == null || keys.length <= 0) {
return StringUtil.isEmpty(joinHaving, true) ? "" : (hasPrefix ? " HAVING " : "") + joinHaving;
}
String quote = getQuote();
String tableAlias = getAliasWithQuote();
List<String> raw = getRaw();
boolean containRaw = raw != null && raw.contains(KEY_HAVING);
String expression;
String method;
//暂时不允许 String prefix;
String suffix;
//fun0(arg0,arg1,...);fun1(arg0,arg1,...)
for (int i = 0; i < keys.length; i++) {
//fun(arg0,arg1,...)
expression = keys[i];
if (containRaw) {
try {
String rawSQL = getRawSQL(KEY_HAVING, expression);
if (rawSQL != null) {
keys[i] = rawSQL;
continue;
}
} catch (Exception e) {
Log.e(TAG, "newSQLConfig rawColumnSQL == null >> try { "
+ " String rawSQL = ((AbstractSQLConfig) config).getRawSQL(KEY_COLUMN, fk); ... "
+ "} catch (Exception e) = " + e.getMessage());
}
}
if (expression.length() > 50) {
throw new UnsupportedOperationException("@having:value 的 value 中字符串 " + expression + " 不合法！"
+ "不允许传超过 50 个字符的函数或表达式！请用 @raw 简化传参！");
}
int start = expression.indexOf("(");
if (start < 0) {
if (isPrepared() && PATTERN_FUNCTION.matcher(expression).matches() == false) {
throw new UnsupportedOperationException("字符串 " + expression + " 不合法！"
+ "预编译模式下 @having:\"column?value;function(arg0,arg1,...)?value...\""
+ " 中 column?value 必须符合正则表达式 " + PATTERN_FUNCTION + " 且不包含连续减号 -- ！不允许空格！");
}
continue;
}
int end = expression.indexOf(")");
if (start >= end) {
throw new IllegalArgumentException("字符 " + expression + " 不合法！"
+ "@having:value 中 value 里的 SQL函数必须为 function(arg0,arg1,...) 这种格式！");
}
method = expression.substring(0, start);
if (StringUtil.isName(method) == false) {
throw new IllegalArgumentException("字符 " + method + " 不合法！"
+ "预编译模式下 @having:\"column?value;function(arg0,arg1,...)?value...\""
+ " 中SQL函数名 function 必须符合正则表达式 ^[0-9a-zA-Z_]+$ ！");
}
suffix = expression.substring(end + 1, expression.length());
if (isPrepared() && (((String) suffix).contains("--") || ((String) suffix).contains("/*") || PATTERN_RANGE.matcher((String) suffix).matches() == false)) {
throw new UnsupportedOperationException("字符串 " + suffix + " 不合法！"
+ "预编译模式下 @having:\"column?value;function(arg0,arg1,...)?value...\""
+ " 中 ?value 必须符合正则表达式 " + PATTERN_RANGE + " 且不包含连续减号 -- 或注释符 /* ！不允许多余的空格！");
}
String[] ckeys = StringUtil.split(expression.substring(start + 1, end));
if (ckeys != null) {
for (int j = 0; j < ckeys.length; j++) {
String origin = ckeys[j];
if (isPrepared()) {
if (origin.startsWith("_") || origin.contains("--") || PATTERN_FUNCTION.matcher(origin).matches() == false) {
throw new IllegalArgumentException("字符 " + ckeys[j] + " 不合法！"
+ "预编译模式下 @having:\"column?value;function(arg0,arg1,...)?value...\""
+ " 中所有 column, arg 都必须是1个不以 _ 开头的单词 或者 符合正则表达式 " + PATTERN_FUNCTION + " 且不包含连续减号 -- ！不允许多余的空格！");
}
}
//JOIN 副表不再在外层加副表名前缀 userId AS `Commet.userId`， 而是直接 userId AS `userId`
boolean isName = false;
if (StringUtil.isNumer(origin)) {
//do nothing
}
else if (StringUtil.isName(origin)) {
origin = quote + origin + quote;
isName = true;
}
else {
origin = getValue(origin).toString();
}
ckeys[j] = (isName && isKeyPrefix() ? tableAlias + "." : "") + origin;
}
}
keys[i] = method + "(" + StringUtil.getString(ckeys) + ")" + suffix;
}
//TODO 支持 OR, NOT 参考 @combine:"&key0,|key1,!key2"
return (hasPrefix ? " HAVING " : "") + StringUtil.concat(StringUtil.getString(keys, AND), joinHaving, AND);
}
@Override
public String getOrder() {
return order;
}
public AbstractSQLConfig setOrder(String... conditions) {
return setOrder(StringUtil.getString(conditions));
}
@Override
public AbstractSQLConfig setOrder(String order) {
this.order = order;
return this;
}
@JSONField(serialize = false)
public String getOrderString(boolean hasPrefix) {
//加上子表的 order
String joinOrder = "";
if (joinList != null) {
SQLConfig cfg;
String c;
boolean first = true;
for (Join j : joinList) {
if (j.isAppJoin()) {
continue;
}
cfg = j.isLeftOrRightJoin() ? j.getOuterConfig() : j.getJoinConfig();
if (StringUtil.isEmpty(cfg.getAlias(), true)) {
cfg.setAlias(cfg.getTable());
}
c = ((AbstractSQLConfig) cfg).getOrderString(false);
if (StringUtil.isEmpty(c, true) == false) {
joinOrder += (first ? "" : ", ") + c;
first = false;
}
}
}
String order = StringUtil.getTrimedString(getOrder());
// SELECT * FROM sys.Moment ORDER BY userId ASC, rand(); 前面的 userId ASC 和后面的 rand() 都有效
// if ("rand()".equals(order)) {
// return (hasPrefix ? " ORDER BY " : "") + StringUtil.concat(order, joinOrder, ", ");
// }
if (getCount() > 0 && (isOracle() || isSQLServer() || isDb2())) { // Oracle, SQL Server, DB2 的 OFFSET 必须加 ORDER BY
// String[] ss = StringUtil.split(order);
if (StringUtil.isEmpty(order, true)) { //SQL Server 子查询内必须指定 OFFSET 才能用 ORDER BY
String idKey = getIdKey();
if (StringUtil.isEmpty(idKey, true)) {
idKey = "id"; //ORDER BY NULL 不行，SQL Server 会报错，必须要有排序，才能使用 OFFSET FETCH，如果没有 idKey，请求中指定 @order 即可
}
order = idKey; //让数据库调控默认升序还是降序 + "+";
}
//不用这么全面，毕竟没有语法问题还浪费性能，如果有其它问题，让前端传的 JSON 直接加上 @order 来解决
// boolean contains = false;
// if (ss != null) {
// for (String s : ss) {
// if (s != null && s.startsWith(idKey)) {
// s = s.substring(idKey.length());
// if ("+".equals(s) || "-".equals(s)) {// || " ASC ".equals(s) || " DESC ".equals(s)) {
// contains = true;
// break;
// }
// }
// }
// }
// if (contains == false) {
// order = (ss == null || ss.length <= 0 ? "" : order + ",") + idKey + "+";
// }
}
String[] keys = StringUtil.split(order);
if (keys == null || keys.length <= 0) {
return StringUtil.isEmpty(joinOrder, true) ? "" : (hasPrefix ? " ORDER BY " : "") + joinOrder;
}
for (int i = 0; i < keys.length; i++) {
String item = keys[i];
if ("rand()".equals(item)) {
continue;
}
int index = item.endsWith("+") ? item.length() - 1 : -1; //StringUtil.split返回数组中，子项不会有null
String sort;
if (index < 0) {
index = item.endsWith("-") ? item.length() - 1 : -1;
sort = index <= 0 ? "" : " DESC ";
}
else {
sort = " ASC ";
}
String origin = index < 0 ? item : item.substring(0, index);
if (isPrepared()) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
//这里既不对origin trim，也不对 ASC/DESC ignoreCase，希望前端严格传没有任何空格的字符串过来，减少传输数据量，节约服务器性能
if (StringUtil.isName(origin) == false) {
throw new IllegalArgumentException("预编译模式下 @order:value 中 " + item + " 不合法! value 里面用 , 分割的"
+ "每一项必须是 随机函数 rand() 或 column+ / column- 且其中 column 必须是 1 个单词！并且不要有多余的空格！");
}
}
keys[i] = getKey(origin) + sort;
}
return (hasPrefix ? " ORDER BY " : "") + StringUtil.concat(StringUtil.getString(keys), joinOrder, ", ");
}
@Override
public List<String> getRaw() {
return raw;
}
@Override
public SQLConfig setRaw(List<String> raw) {
this.raw = raw;
return this;
}
/**获取原始 SQL 片段
* @param key
* @param value
* @return
* @throws Exception
*/
@Override
public String getRawSQL(String key, Object value) throws Exception {
List<String> rawList = getRaw();
boolean containRaw = rawList != null && rawList.contains(key);
if (containRaw && value instanceof String == false) {
throw new UnsupportedOperationException("@raw:value 的 value 中 " + key + " 不合法！"
+ "对应的 " + key + ":value 中 value 类型只能为 String！");
}
String rawSQL = containRaw ? RAW_MAP.get(value) : null;
if (containRaw) {
if (rawSQL == null) {
throw new UnsupportedOperationException("@raw:value 的 value 中 " + key + " 不合法！"
+ "对应的 " + key + ":value 中 value 值 " + value + " 未在后端 RAW_MAP 中配置 ！");
}
if ("".equals(rawSQL)) {
return (String) value;
}
}
return rawSQL;
}
@Override
public List<String> getJson() {
return json;
}
@Override
public AbstractSQLConfig setJson(List<String> json) {
this.json = json;
return this;
}
@Override
public Subquery getFrom() {
return from;
}
@Override
public AbstractSQLConfig setFrom(Subquery from) {
this.from = from;
return this;
}
@Override
public List<String> getColumn() {
return column;
}
@Override
public AbstractSQLConfig setColumn(List<String> column) {
this.column = column;
return this;
}
@JSONField(serialize = false)
public String getColumnString() throws Exception {
return getColumnString(false);
}
@JSONField(serialize = false)
public String getColumnString(boolean inSQLJoin) throws Exception {
switch (getMethod()) {
case HEAD:
case HEADS: //StringUtil.isEmpty(column, true) || column.contains(",") 时SQL.count(column)会return "*"
if (isPrepared() && column != null) {
String origin;
String alias;
int index;
for (String c : column) {
index = c.lastIndexOf(":"); //StringUtil.split返回数组中，子项不会有null
origin = index < 0 ? c : c.substring(0, index);
alias = index < 0 ? null : c.substring(index + 1);
if (StringUtil.isName(origin) == false || (alias != null && StringUtil.isName(alias) == false)) {
throw new IllegalArgumentException("HEAD请求: 预编译模式下 @column:value 中 value里面用 , 分割的每一项"
+ " column:alias 中 column 必须是1个单词！如果有alias，则alias也必须为1个单词！并且不要有多余的空格！");
}
}
}
return SQL.count(column != null && column.size() == 1 ? getKey(Pair.parseEntry(column.get(0), true).getKey()) : "*");
case POST:
if (column == null || column.isEmpty()) {
throw new IllegalArgumentException("POST 请求必须在Table内设置要保存的 key:value ！");
}
String s = "";
boolean pfirst = true;
for (String c : column) {
if (isPrepared() && StringUtil.isName(c) == false) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
throw new IllegalArgumentException("POST请求: 每一个 key:value 中的key都必须是1个单词！");
}
s += ((pfirst ? "" : ",") + getKey(c));
pfirst = false;
}
return "(" + s + ")";
case GET:
case GETS:
boolean isQuery = RequestMethod.isQueryMethod(method); //TODO 这个有啥用？上面应是 getMethod 的值 GET 和 GETS 了。
String joinColumn = "";
if (isQuery && joinList != null) {
SQLConfig ecfg;
SQLConfig cfg;
String c;
boolean first = true;
for (Join j : joinList) {
if (j.isAppJoin()) {
continue;
}
ecfg = j.getOuterConfig();
if (ecfg != null && ecfg.getColumn() != null) { //优先级更高
cfg = ecfg;
}
else {
cfg = j.getJoinConfig();
}
if (StringUtil.isEmpty(cfg.getAlias(), true)) {
cfg.setAlias(cfg.getTable());
}
c = ((AbstractSQLConfig) cfg).getColumnString(true);
if (StringUtil.isEmpty(c, true) == false) {
joinColumn += (first ? "" : ", ") + c;
first = false;
}
inSQLJoin = true;
}
}
String tableAlias = getAliasWithQuote();
// String c = StringUtil.getString(column); //id,name;json_length(contactIdList):contactCount;...
String[] keys = column == null ? null : column.toArray(new String[]{}); //StringUtil.split(c, ";");
if (keys == null || keys.length <= 0) {
boolean noColumn = column != null && inSQLJoin;
String mc = isKeyPrefix() == false ? (noColumn ? "" : "*") : (noColumn ? "" : tableAlias + ".*");
return StringUtil.concat(mc, joinColumn, ", ", true);
}
List<String> raw = getRaw();
boolean containRaw = raw != null && raw.contains(KEY_COLUMN);
String expression;
String method = null;
//...;fun0(arg0,arg1,...):fun0;fun1(arg0,arg1,...):fun1;...
for (int i = 0; i < keys.length; i++) {
//fun(arg0,arg1,...)
expression = keys[i];
if (containRaw) { // 由于 HashMap 对 key 做了 hash 处理，所以 get 比 containsValue 更快
if ("".equals(RAW_MAP.get(expression)) || RAW_MAP.containsValue(expression)) { // newSQLConfig 提前处理好的
continue;
}
// 简单点， 后台配置就带上 AS
// int index = expression.lastIndexOf(":");
// String alias = expression.substring(index+1);
// boolean hasAlias = StringUtil.isName(alias);
// String pre = index > 0 && hasAlias ? expression.substring(0, index) : expression;
// if (RAW_MAP.containsValue(pre) || "".equals(RAW_MAP.get(pre))) { // newSQLConfig 提前处理好的
// expression = pre + (hasAlias ? " AS " + alias : "");
// continue;
// }
}
if (expression.length() > 50) {
throw new UnsupportedOperationException("@column:value 的 value 中字符串 " + expression + " 不合法！"
+ "不允许传超过 50 个字符的函数或表达式！请用 @raw 简化传参！");
}
int start = expression.indexOf("(");
int end = 0;
if (start >= 0) {
end = expression.indexOf(")");
if (start >= end) {
throw new IllegalArgumentException("字符 " + expression + " 不合法！"
+ "@column:value 中 value 里的 SQL函数必须为 function(arg0,arg1,...) 这种格式！");
}
method = expression.substring(0, start);
boolean distinct = i <= 0 && method.startsWith(PREFFIX_DISTINCT);
String fun = distinct ? method.substring(PREFFIX_DISTINCT.length()) : method;
if (fun.isEmpty() == false && StringUtil.isName(fun) == false) {
throw new IllegalArgumentException("字符 " + method + " 不合法！"
+ "预编译模式下 @column:\"column0,column1:alias;function0(arg0,arg1,...);function1(...):alias...\""
+ " 中SQL函数名 function 必须符合正则表达式 ^[0-9a-zA-Z_]+$ ！");
}
}
boolean isColumn = start < 0;
String[] ckeys = StringUtil.split(isColumn ? expression : expression.substring(start + 1, end));
String quote = getQuote();
// if (isPrepared()) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
if (ckeys != null && ckeys.length > 0) {
boolean distinct;
String origin;
String alias;
int index;
for (int j = 0; j < ckeys.length; j++) {
index = isColumn ? ckeys[j].lastIndexOf(":") : -1; //StringUtil.split返回数组中，子项不会有null
origin = index < 0 ? ckeys[j] : ckeys[j].substring(0, index);
alias = index < 0 ? null : ckeys[j].substring(index + 1);
distinct = j <= 0 && origin.startsWith(PREFFIX_DISTINCT);
if (distinct) {
origin = origin.substring(PREFFIX_DISTINCT.length());
}
if (isPrepared()) {
if (isColumn) {
if (StringUtil.isName(origin) == false || (alias != null && StringUtil.isName(alias) == false)) {
throw new IllegalArgumentException("字符 " + ckeys[j] + " 不合法！"
+ "预编译模式下 @column:value 中 value里面用 , 分割的每一项"
+ " column:alias 中 column 必须是1个单词！如果有alias，则alias也必须为1个单词！"
+ "DISTINCT 必须全大写，且后面必须有且只有 1 个空格！其它情况不允许空格！");
}
}