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·2913 lines (2534 loc) · 92.7 KB
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/*Copyright ©2016 TommyLemon(https://github.com/TommyLemon/APIJSON)
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 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_ROLE;
import static apijson.JSONObject.KEY_RAW;
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.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.Column;
import apijson.orm.model.ExtendedProperty;
import apijson.orm.model.PgAttribute;
import apijson.orm.model.PgClass;
import apijson.orm.model.SysColumn;
import apijson.orm.model.SysTable;
import apijson.orm.model.Table;
/**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 ";
/**
* 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> DATABASE_LIST;
// 自定义where条件拼接
public static final Map<String, String> RAW_MAP;
static {
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);
DATABASE_LIST = new ArrayList<>();
DATABASE_LIST.add(DATABASE_MYSQL);
DATABASE_LIST.add(DATABASE_POSTGRESQL);
DATABASE_LIST.add(DATABASE_SQLSERVER);
DATABASE_LIST.add(DATABASE_ORACLE);
RAW_MAP = new HashMap<>();
}
@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> 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 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.getOutterConfig() : 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;
}
/**
* @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.getOutterConfig() : 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;
}
}
}
having = StringUtil.getTrimedString(having);
String[] keys = StringUtil.split(having, ";");
if (keys == null || keys.length <= 0) {
return StringUtil.isEmpty(joinHaving, true) ? "" : (hasPrefix ? " HAVING " : "") + joinHaving;
}
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];
int start = expression.indexOf("(");
if (start < 0) {
if (isPrepared() && PATTERN_HAVING.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 ^[A-Za-z0-9%!=<>]+$ ！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() && PATTERN_HAVING_SUFFIX.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 ^[0-9%!=<>]+$ ！不允许空格！");
}
String[] ckeys = StringUtil.split(expression.substring(start + 1, end));
if (ckeys != null) {
for (int j = 0; j < ckeys.length; j++) {
if (isPrepared() && (StringUtil.isName(ckeys[j]) == false || ckeys[j].startsWith("_"))) {
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 arg 都必须是1个不以 _ 开头的单词！并且不要有空格！");
}
ckeys[j] = getKey(ckeys[j]);
}
}
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.getOutterConfig() : 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());
if (getCount() > 0 && (isOracle() || isSQLServer())) { // Oracle 和 SQL Server 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 + "+";
// }
}
if (order.contains("+")) {//replace没有包含的replacement会崩溃
order = order.replaceAll("\\+", " ASC ");
}
if (order.contains("-")) {
order = order.replaceAll("-", " DESC ");
}
String[] keys = StringUtil.split(order);
if (keys == null || keys.length <= 0) {
return StringUtil.isEmpty(joinOrder, true) ? "" : (hasPrefix ? " ORDER BY " : "") + joinOrder;
}
String origin;
String sort;
int index;
for (int i = 0; i < keys.length; i++) {
index = keys[i].trim().endsWith(" ASC") ? keys[i].lastIndexOf(" ASC") : -1; //StringUtil.split返回数组中，子项不会有null
if (index < 0) {
index = keys[i].trim().endsWith(" DESC") ? keys[i].lastIndexOf(" DESC") : -1;
sort = index <= 0 ? "" : " DESC ";
} else {
sort = " ASC ";
}
origin = index < 0 ? keys[i] : keys[i].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 value里面用 , 分割的每一项"
+ " column+ / column- 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> 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.getOutterConfig();
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);
}
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];
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！"
+ "@having: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);
if (StringUtil.isName(distinct ? method.substring(PREFFIX_DISTINCT.length()) : method) == 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！");
}
}
else {
// if ((StringUtil.isName(origin) == false || origin.startsWith("_"))) {
if (origin.startsWith("_") || PATTERN_FUNCTION.matcher(origin).matches() == false) {
throw new IllegalArgumentException("字符 " + ckeys[j] + " 不合法！"
+ "预编译模式下 @column:\"column0,column1:alias;function0(arg0,arg1,...);function1(...):alias...\""
+ " 中所有 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 + " ！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！");
}
}
}
//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();
}
if (isName && isKeyPrefix()) {
ckeys[j] = tableAlias + "." + origin;
// if (isColumn) {
// ckeys[j] += " AS " + quote + (isMain() ? "" : tableAlias + ".") + (StringUtil.isEmpty(alias, true) ? origin : alias) + quote;
// }
if (isColumn && StringUtil.isEmpty(alias, true) == false) {
ckeys[j] += " AS " + quote + alias + quote;
}
} else {
ckeys[j] = origin + (StringUtil.isEmpty(alias, true) ? "" : " AS " + quote + alias + quote);
}
if (distinct) {
ckeys[j] = PREFFIX_DISTINCT + ckeys[j];
}
}
// }
}
if (isColumn) {
keys[i] = StringUtil.getString(ckeys);
}
else {
String suffix = expression.substring(end + 1, expression.length()); //:contactCount
String alias = suffix.startsWith(":") ? suffix.substring(1) : null; //contactCount
if (StringUtil.isEmpty(alias, true)) {
if (suffix.isEmpty() == false) {
throw new IllegalArgumentException("GET请求: 预编译模式下 @column:value 中 value里面用 ; 分割的每一项"
+ " function(arg0,arg1,...):alias 中 alias 如果有就必须是1个单词！并且不要有多余的空格！");
}
}
else {
if (StringUtil.isEmpty(alias, true) == false && StringUtil.isName(alias) == false) {
throw new IllegalArgumentException("GET请求: 预编译模式下 @column:value 中 value里面用 ; 分割的每一项"
+ " function(arg0,arg1,...):alias 中 alias 必须是1个单词！并且不要有多余的空格！");
}
}
String origin = method + "(" + StringUtil.getString(ckeys) + ")";
// if (isKeyPrefix()) {
// keys[i] = origin + " AS " + quote + (isMain() ? "" : tableAlias + ".") + (StringUtil.isEmpty(alias, true) ? method : alias) + quote;
// }
// else {
keys[i] = origin + (StringUtil.isEmpty(alias, true) ? "" : " AS " + quote + alias + quote);
// }
}
}
String c = StringUtil.getString(keys);
c = c + (StringUtil.isEmpty(joinColumn, true) ? "" : ", " + joinColumn);//不能在这里改，后续还要用到:
return isMain() && isDistinct() ? PREFFIX_DISTINCT + c : c;
default:
throw new UnsupportedOperationException(
"服务器内部错误：getColumnString 不支持 " + RequestMethod.getName(getMethod())
+ " 等 [GET,GETS,HEAD,HEADS,POST] 外的ReuqestMethod！"
);
}
}
@Override
public List<List<Object>> getValues() {
return values;
}
@JSONField(serialize = false)
public String getValuesString() {
String s = "";
if (values != null && values.size() > 0) {
Object[] items = new Object[values.size()];
List<Object> vs;
for (int i = 0; i < values.size(); i++) {
vs = values.get(i);
if (vs == null) {
continue;
}
items[i] = "(";
for (int j = 0; j < vs.size(); j++) {
items[i] += ((j <= 0 ? "" : ",") + getValue(vs.get(j)));
}
items[i] += ")";
}
s = StringUtil.getString(items);
}
return s;
}
@Override
public AbstractSQLConfig setValues(List<List<Object>> valuess) {
this.values = valuess;
return this;
}
@Override
public Map<String, Object> getContent() {
return content;
}
@Override
public AbstractSQLConfig setContent(Map<String, Object> content) {
this.content = content;
return this;
}
@Override
public int getCount() {
return count;
}
@Override
public AbstractSQLConfig setCount(int count) {
this.count = count;
return this;
}