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Join.java
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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 java.util.List;
import com.alibaba.fastjson.JSONObject;
import apijson.NotNull;
import apijson.StringUtil;
/**连表 配置
* @author Lemon
*/
public class Join {
private String path; // /User/id@
private String joinType; // "@" - APP, "<" - LEFT, ">" - RIGHT, "*" - CROSS, "&" - INNER, "|" - FULL, "!" - OUTER, "^" - SIDE, "(" - ANTI, ")" - FOREIGN
private String table; // User
private String alias; // owner
private int count = 1; // 当app join子表，需要返回子表的行数，默认1行；
private List<On> onList; // ON User.id = Moment.userId AND ...
private JSONObject request; // { "id@":"/Moment/userId" }
private JSONObject outer; // "join": { "</User": { "@order":"id-", "@group":"id", "name~":"a", "tag$":"%a%", "@combine": "name~,tag$" } } 中的 </User 对应值
private SQLConfig joinConfig;
private SQLConfig cacheConfig;
private SQLConfig outerConfig;
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
public String getJoinType() {
return joinType;
}
public void setJoinType(String joinType) {
this.joinType = joinType;
}
public String getTable() {
return table;
}
public void setTable(String table) {
this.table = table;
}
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
public List<On> getOnList() {
return onList;
}
public void setOnList(List<On> onList) {
this.onList = onList;
}
public JSONObject getRequest() {
return request;
}
public void setRequest(JSONObject request) {
this.request = request;
}
public JSONObject getOuter() {
return outer;
}
public void setOuter(JSONObject outer) {
this.outer = outer;
}
public SQLConfig getJoinConfig() {
return joinConfig;
}
public void setJoinConfig(SQLConfig joinConfig) {
this.joinConfig = joinConfig;
}
public SQLConfig getCacheConfig() {
return cacheConfig;
}
public void setCacheConfig(SQLConfig cacheConfig) {
this.cacheConfig = cacheConfig;
}
public SQLConfig getOuterConfig() {
return outerConfig;
}
public void setOuterConfig(SQLConfig outerConfig) {
this.outerConfig = outerConfig;
}
public boolean isOne2One() {
return ! isOne2Many();
}
public boolean isOne2Many() {
return count != 1 || (path != null && path.contains("[]")); // TODO 必须保证一对一时不会传包含 [] 的 path
}
public boolean isAppJoin() {
return "@".equals(getJoinType());
}
public boolean isLeftJoin() {
return "<".equals(getJoinType());
}
public boolean isRightJoin() {
return ">".equals(getJoinType());
}
public boolean isCrossJoin() {
return "*".equals(getJoinType());
}
public boolean isInnerJoin() {
return "&".equals(getJoinType());
}
public boolean isFullJoin() {
String jt = getJoinType();
return "".equals(jt) || "|".equals(jt);
}
public boolean isOuterJoin() {
return "!".equals(getJoinType());
}
public boolean isSideJoin() {
return "^".equals(getJoinType());
}
public boolean isAntiJoin() {
return "(".equals(getJoinType());
}
public boolean isForeignJoin() {
return ")".equals(getJoinType());
}
public boolean isLeftOrRightJoin() {
String jt = getJoinType();
return "<".equals(jt) || ">".equals(jt);
}
public boolean canCacheViceTable() {
String jt = getJoinType();
return "@".equals(jt) || "<".equals(jt) || ">".equals(jt) || "&".equals(jt) || "*".equals(jt) || ")".equals(jt);
// 副表是按常规条件查询，缓存会导致其它同表同条件对象查询结果集为空 return ! isFullJoin(); // ! - OUTER, ( - FOREIGN 都需要缓存空副表数据，避免多余的查询
}
public boolean isSQLJoin() {
return ! isAppJoin();
}
public static boolean isSQLJoin(Join j) {
return j != null && j.isSQLJoin();
}
public static boolean isAppJoin(Join j) {
return j != null && j.isAppJoin();
}
public static boolean isLeftOrRightJoin(Join j) {
return j != null && j.isLeftOrRightJoin();
}
public static class On {
private String originKey;
private String originValue;
private Logic logic; // & | !
private String relateType; // "" - 一对一, "{}" - 一对多, "<>" - 多对一, > , <= , !=
private String key; // id
private String targetTableKey; // Moment:main
private String targetTable; // Moment
private String targetAlias; // main
private String targetKey; // userId
public String getOriginKey() {
return originKey;
}
public void setOriginKey(String originKey) {
this.originKey = originKey;
}
public String getOriginValue() {
return originValue;
}
public void setOriginValue(String originValue) {
this.originValue = originValue;
}
public Logic getLogic() {
return logic;
}
public void setLogic(Logic logic) {
this.logic = logic;
}
public String getRelateType() {
return relateType;
}
public void setRelateType(String relateType) {
this.relateType = relateType;
}
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
public void setTargetTableKey(String targetTableKey) {
this.targetTableKey = targetTableKey;
}
public String getTargetTableKey() {
return targetTableKey;
}
public void setTargetTable(String targetTable) {
this.targetTable = targetTable;
}
public String getTargetTable() {
return targetTable;
}
public void setTargetAlias(String targetAlias) {
this.targetAlias = targetAlias;
}
public String getTargetAlias() {
return targetAlias;
}
public String getTargetKey() {
return targetKey;
}
public void setTargetKey(String targetKey) {
this.targetKey = targetKey;
}
public void setKeyAndType(String joinType, String table, @NotNull String originKey) throws Exception { //id, id@, id{}@, contactIdList<>@ ...
if (originKey.endsWith("@")) {
originKey = originKey.substring(0, originKey.length() - 1);
}
else { //TODO 暂时只允许 User.id = Moment.userId 字段关联，不允许 User.id = 82001 这种
throw new IllegalArgumentException(joinType + "/.../" + table + "/" + originKey + " 中字符 " + originKey + " 不合法！join:'.../refKey'" + " 中 refKey 必须以 @ 结尾！");
}
String k;
if (originKey.endsWith("{}")) {
setRelateType("{}");
k = originKey.substring(0, originKey.length() - 2);
}
else if (originKey.endsWith("<>")) {
setRelateType("<>");
k = originKey.substring(0, originKey.length() - 2);
}
else if (originKey.endsWith("$")) { // key%$:"a" -> key LIKE '%a%'; key?%$:"a" -> key LIKE 'a%'; key_?$:"a" -> key LIKE '_a'; key_%$:"a" -> key LIKE '_a%'
k = originKey.substring(0, originKey.length() - 1);
char c = k.isEmpty() ? 0 : k.charAt(k.length() - 1);
String t = "$";
if (c == '%' || c == '_' || c == '?') {
t = c + t;
k = k.substring(0, k.length() - 1);
char c2 = k.isEmpty() ? 0 : k.charAt(k.length() - 1);
if (c2 == '%' || c2 == '_' || c2 == '?') {
if (c2 == c) {
throw new IllegalArgumentException(originKey + ":value 中字符 " + k + " 不合法！key$:value 中不允许 key 中有连续相同的占位符！");
}
t = c2 + t;
k = k.substring(0, k.length() - 1);
}
else if (c == '?') {
throw new IllegalArgumentException(originKey + ":value 中字符 " + originKey + " 不合法！key$:value 中不允许只有单独的 '?'，必须和 '%', '_' 之一配合使用 ！");
}
}
setRelateType(t);
}
else if (originKey.endsWith("~")) {
boolean ignoreCase = originKey.endsWith("*~");
setRelateType(ignoreCase ? "*~" : "~");
k = originKey.substring(0, originKey.length() - (ignoreCase ? 2 : 1));
}
else if (originKey.endsWith(">=")) {
setRelateType(">=");
k = originKey.substring(0, originKey.length() - 2);
}
else if (originKey.endsWith("<=")) {
setRelateType("<=");
k = originKey.substring(0, originKey.length() - 2);
}
else if (originKey.endsWith(">")) {
setRelateType(">");
k = originKey.substring(0, originKey.length() - 1);
}
else if (originKey.endsWith("<")) {
setRelateType("<");
k = originKey.substring(0, originKey.length() - 1);
}
else {
setRelateType("");
k = originKey;
}
if (k != null && (k.contains("&") || k.contains("|"))) {
throw new UnsupportedOperationException(joinType + "/.../" + table + "/" + originKey + " 中字符 " + k + " 不合法！与或非逻辑符仅支持 '!' 非逻辑符 ！");
}
//TODO if (c3 == '-') { // 表示 key 和 value 顺序反过来: value LIKE key
Logic l = new Logic(k);
setLogic(l);
if (StringUtil.isName(l.getKey()) == false) {
throw new IllegalArgumentException(joinType + "/.../" + table + "/" + originKey + " 中字符 " + l.getKey() + " 不合法！必须符合字段命名格式！");
}
setKey(l.getKey());
}
}
}