This commit is contained in:
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6f97f42d49
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6eae7f0fad
6 changed files with 168 additions and 77 deletions
61
src/db.ts
61
src/db.ts
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@ -1,44 +1,65 @@
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import mariadb from 'mariadb';
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import { Datatype } from './dbStructure';
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import { Handler } from './defaultHandler';
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import { Query } from './query';
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import { attributeSettings, onAction, primaryData } from './types';
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import { Query, selectQuery } from './query';
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import { attributeSettings, onAction, primaryData, serializeReturn } from './types';
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export class DB {
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tables:Table[] = [];
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handler: Handler;
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//pool:mariadb.Pool;
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constructor(/*{ host, user, password, database, connectionLimit = 5 }*/) {
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//this.pool = mariadb.createPool({ host, user, password, database, connectionLimit, multipleStatements: true });
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this.handler = new Handler();
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}
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async query(query: Query) {
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console.log(query);
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//return this.pool.query(query);
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}
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getHandler() {
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return Handler;
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return this.handler;
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}
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sync(){
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let handler = this.getHandler();
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this.tables.forEach(t=>{
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console.log(handler.querys.create(handler,t));
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})
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}
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newTable(name: string) {
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return new Table(name);
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let tabel = new Table(name,this);
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this.tables.push(tabel);
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return tabel;
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}
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}
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export class Attribute {
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name: string;
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table: Table;
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ops: attributeSettings;
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type: Datatype;
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constructor(name: string, type: Datatype, ops: attributeSettings) {
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constructor(name: string, table:Table, type: Datatype, ops: attributeSettings) {
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this.name = name;
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this.ops = ops;
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this.type = type;
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this.table = table;
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}
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serializeDatatype(){
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return this.type.serialize();
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serializeDatatype(handler : Handler){
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return this.type.serialize(handler);
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}
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serialize() {
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return this.toString();
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serializeSettings(handler : Handler){
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return handler.builders.attributeSettings(handler,this);
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}
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toString() {
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return this.name;
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serialize(handler : Handler) {
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return handler.builders.escapeID(this.name);
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}
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toString(handler : Handler = this.table.dbLangDatabaseInstance.getHandler()) {
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return this.table.serialize(handler)+"."+this.serialize(handler);
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}
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toStringFunc(handler : Handler){
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return this.table.serialize(handler)+"("+this.serialize(handler)+")";
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}
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}
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@ -46,20 +67,22 @@ export class Attribute {
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export class Table {
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dbLangTableName: string;
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dbLangTableAttributes: { [key: string]: Attribute; } = {};
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dbLangDatabaseInstance: DB;
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[key: string]: Attribute | any
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constructor(name: string) {
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constructor(name: string, table:DB) {
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this.dbLangTableName = name;
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this.dbLangDatabaseInstance = table;
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}
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serialize() {
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return this.toString();
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serialize(handler : Handler) {
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return this.toString(handler);
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}
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toString() {
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return this.dbLangTableName;
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toString(handler : Handler = this.dbLangDatabaseInstance.getHandler()) {
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return handler.builders.escapeID(this.dbLangTableName);
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}
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addAttribute(name: string, type: Datatype, ops: attributeSettings, noErrorOnNameConflict = false) {
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let attr = new Attribute(name,type,ops);
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addAttribute(name: string, type: Datatype, ops: attributeSettings = {}, noErrorOnNameConflict = false) {
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let attr = new Attribute(name,this,type,ops);
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this.dbLangTableAttributes[name] = attr;
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if (["serialize", "toString", "addAttribute", "dbLangTableName", "dbLangTableAttributes"].includes(name)) {
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if (["serialize", "toString", "addAttribute", "dbLangTableName", "dbLangTableAttributes", "dbLangDatabaseInstance"].includes(name)) {
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if (!noErrorOnNameConflict) throw new Error("You cannot name Attribute like Methode of this Table!");
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} else {
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this[name] = attr;
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@ -9,7 +9,7 @@ export class Datatype{
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this.type = type;
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this.args = args;
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}
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serialize(handler = Handler): serializeReturn{
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serialize(handler : Handler): serializeReturn{
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return handler.datatypes[this.type as keyof typeof handler.datatypes](this.args);
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}
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}
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@ -21,8 +21,8 @@ export abstract class Modifier {
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this.t = type;
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this.a = args;
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}
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serialize(handler = Handler): serializeReturn {
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return handler.modifiers[this.t as keyof typeof handler.modifiers](this.a);
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serialize(handler : Handler): serializeReturn {
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return handler.modifiers[this.t as keyof typeof handler.modifiers](handler,this.a);
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}
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}
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@ -37,13 +37,13 @@ export class Aggregation {
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this.t = type;
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this.a = args;
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}
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serialize(handler = Handler): serializeReturn {
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return handler.aggregations[this.t as keyof typeof handler.aggregations](this.a);
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serialize(handler : Handler): serializeReturn {
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return handler.aggregations[this.t as keyof typeof handler.aggregations](handler,this.a);
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}
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}
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export class Joins {
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serialize(handler = Handler): serializeReturn {
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serialize(handler : Handler): serializeReturn {
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return ["", []];
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}
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}
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@ -1,26 +1,30 @@
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import { Attribute } from "./db"
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import { Attribute, DB, Table } from "./db"
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import { Aggregation, Modifier } from "./dbStructure"
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import { selectQuery } from "./query"
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import { allModifierInput, primaryData, serializeReturn } from "./types"
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export class Handler {
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static querys = {
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select: (q: selectQuery): serializeReturn => {
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syncDB(db : DB){
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}
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querys = {
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select: (handler:Handler,q: selectQuery): serializeReturn => {
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let args: primaryData[] = [];
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let w = joinArg(", ", this)(q.attr);
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let w = joinArg(", ")(handler,q.attr);
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args.push(...w[1]);
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let sql = `select ${w[0]} from ${q.from == null ? 'DUAL' : q.from.serialize(this)}`;
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let sql = `select ${w[0]} from ${q.from == null ? 'DUAL' : q.from.serialize(handler)}`;
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if (q.whereD) {
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let whereS = q.whereD.serialize(this);
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let whereS = q.whereD.serialize(handler);
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args.push(...whereS[1]);
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sql += " where " + whereS[0];
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}
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if (q.groupByD.length > 0) {
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let groupByS = joinArg(",", this)(q.groupByD);
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let groupByS = joinArg(",")(handler,q.groupByD);
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args.push(...groupByS[1]);
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sql += " group by " + groupByS[0];
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if (q.havingD) {
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let havingS = q.havingD.serialize(this);
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let havingS = q.havingD.serialize(handler);
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args.push(...havingS[1]);
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sql += " having " + havingS[0];
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}
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args.push(q.limitD);
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}
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return [sql, args];
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},
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create:(handler:Handler,table: Table): serializeReturn=>{
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let args:primaryData[] = [];
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let sql = `create table if not exists ${table.toString(handler)}(
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${Object.entries(table.dbLangTableAttributes).map(([_,a])=>{
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let atype = a.serializeSettings(handler);
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args.push(...(atype[1]));
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return a.serialize(handler)+" "+atype[0];
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}).join(",\n")}
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)`;
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return [sql,args];
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}
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}
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static aggregations = {
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count: (a: Attribute): serializeReturn => ["count(" + a + ")", []],
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sum: (a: Attribute): serializeReturn => ["sum(" + a + ")", []],
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avg: (a: Attribute): serializeReturn => ["avg(" + a + ")", []],
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min: (a: Attribute): serializeReturn => ["min(" + a + ")", []],
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max: (a: Attribute): serializeReturn => ["max(" + a + ")", []],
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builders = {
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attributeSettings: (handler:Handler,a: Attribute): serializeReturn => {
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let dtype = a.type.serialize(handler);
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let sql = ""+dtype[0];
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let args:primaryData[] = [...dtype[1]];
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if (a.ops.autoIncrement) {
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sql += " auto_increment";
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}
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if (a.ops.primaryKey) {
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sql += " primary key";
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}
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if (a.ops.default != null) {
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if (a.ops.autoIncrement || a.ops.primaryKey || a.ops.notNull)
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throw new Error(`Can not set default when autoIncrement, primaryKey or notNull ist set on Attribute: ${a.toStringFunc(handler)}`);
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sql += " default ?";
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args.push(a.ops.default);
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}
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static modifiers = {
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and: joinArg("and", this),
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or: joinArg("or", this),
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eq: joinArg("=", this),
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plus: joinArg("+", this),
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minus: joinArg("-", this),
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not: (a: allModifierInput[]): serializeReturn => {
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if (a.ops.unique != null) {
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if (!a.ops.autoIncrement && !a.ops.primaryKey){
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sql += " unique";
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}
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}
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if (a.ops.notNull != null) {
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if (!a.ops.autoIncrement && !a.ops.primaryKey && a.ops.default == null){
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sql += " not null";
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}
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}
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if (a.ops.foreginKey != null) {
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sql += ` foreign key references (${a.ops.foreginKey.link.toStringFunc(handler)})`
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}
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return [sql, args];
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},
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escapeID: (key:string) :string =>{
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if(!key || key === "" || key.includes('\u0000')) throw new Error("Can not escape empty key or with null unicode!");
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if (key.match(/^`.+`$/g)) return key;
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return `\`${key.replace(/`/g, '``')}\``;
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}
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}
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aggregations = {
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count: (handler:Handler,a: Attribute): serializeReturn => ["count(" + a.toString(handler) + ")", []],
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sum: (handler:Handler,a: Attribute): serializeReturn => ["sum(" + a.toString(handler) + ")", []],
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avg: (handler:Handler,a: Attribute): serializeReturn => ["avg(" + a.toString(handler) + ")", []],
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min: (handler:Handler,a: Attribute): serializeReturn => ["min(" + a.toString(handler) + ")", []],
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max: (handler:Handler,a: Attribute): serializeReturn => ["max(" + a.toString(handler) + ")", []],
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}
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modifiers = {
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and: joinArg("and"),
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or: joinArg("or"),
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le: joinArg("<"),
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leq: joinArg("<="),
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eq: joinArg("="),
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geq: joinArg(">="),
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ge: joinArg(">"),
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plus: joinArg("+"),
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minus: joinArg("-"),
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not: (handler:Handler,a: allModifierInput[]): serializeReturn => {
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let e = a[0];
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if (e instanceof Attribute) return ["not (" + e + ")", []];
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if (e instanceof Attribute) return ["not (" + e.toString(handler) + ")", []];
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if (e instanceof Modifier || e instanceof selectQuery || e instanceof Aggregation) {
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let [sqli, argsi] = e.serialize(this);
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let [sqli, argsi] = e.serialize(handler);
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return ["not (" + sqli + ")", argsi]
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}
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return ["not (?)", [e]];
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}
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}
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static datatypes = {
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datatypes = {
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char: dataTypeSingleNum("char"),
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varchar: dataTypeSingleNum("varchar"),
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binary: dataTypeSingleNum("binary"),
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longtext: dataTypeNoArg("longtext"),
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enum: (a: primaryData[]): serializeReturn => {
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console.log(a);
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return ["enum(" + a.map(() => "?").join(", ") + ")", a];
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},
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set: (a: primaryData[]): serializeReturn => {
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double: dataTypeDblNum("double"),
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decimal: dataTypeDblNum("decimal"),
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data: dataTypeNoArg("data"),
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datatime: dataTypeNoArg("datatime"),
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date: dataTypeNoArg("data"),
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datetime: dataTypeNoArg("datatime"),
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timestamp: dataTypeNoArg("timestamp"),
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time: dataTypeNoArg("time"),
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year: dataTypeNoArg("year"),
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@ -117,13 +181,13 @@ function dataTypeDblNum(type:string){
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}
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function joinArg(type: string, s: any) {
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return (a: (allModifierInput)[]): serializeReturn => {
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function joinArg(type: string) {
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return (handler:Handler,a: (allModifierInput)[]): serializeReturn => {
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let args: primaryData[] = [];
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let sql = a.map(d => {
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if (d instanceof Attribute) return d;
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if (d instanceof Attribute) return d.toString(handler);
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if (d instanceof Modifier || d instanceof selectQuery || d instanceof Aggregation) {
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let [sqli, argsi] = d.serialize(s);
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let [sqli, argsi] = d.serialize(handler);
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args.push(...(argsi.flat(Infinity)));
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return "(" + sqli + ")";
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}
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12
src/funcs.ts
12
src/funcs.ts
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@ -6,7 +6,11 @@ import { allModifierInput, primaryData, selectElements, selectFromElements } fro
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//modifiers
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export const and = (...args: (BooleanModifier)[]) => new BooleanModifier("and", args);
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export const or = (...args: (BooleanModifier)[]) => new BooleanModifier("or", args);
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export const ge = (...args: (allModifierInput)[]) => new BooleanModifier("ge", args);
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export const geq = (...args: (allModifierInput)[]) => new BooleanModifier("geq", args);
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export const eq = (...args: (allModifierInput)[]) => new BooleanModifier("eq", args);
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export const leq = (...args: (allModifierInput)[]) => new BooleanModifier("leq", args);
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export const le = (...args: (allModifierInput)[]) => new BooleanModifier("le", args);
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export const plus = (...args: (allModifierInput)[]) => new NumberModifier("plus", args);
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export const minus = (...args: (allModifierInput)[]) => new NumberModifier("minus", args);
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export const MEDIUMTEXT = new Datatype("mediumtext",[]);
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export const LONGTEXT = new Datatype("longtext",[]);
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export const ENUM = (values:string[]) => new Datatype("enum",values);
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export const SET = (values:string[]) => new Datatype("set",values);
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export const ENUM = (...values:string[]) => new Datatype("enum",values);
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export const SET = (...values:string[]) => new Datatype("set",values);
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export const BOOL = new Datatype("bool",[]);
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export const BIT = new Datatype("bit",[]);
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export const DOUBLE = (size:number,d:number) => new Datatype("double",[size,d]);
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export const DECIMAL = (size:number,d:number) => new Datatype("decimal",[size,d]);
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export const DATA = new Datatype("data",[]);
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export const DATATIME = new Datatype("datatime",[]);
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export const DATE = new Datatype("date",[]);
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export const DATETIME = new Datatype("datetime",[]);
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export const TIMESTAMP = new Datatype("timestamp",[]);
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export const TIME = new Datatype("time",[]);
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export const YEAR = new Datatype("year",[]);
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@ -41,12 +41,12 @@ export class selectQuery {
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return this;
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}
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serialize(handler = Handler): serializeReturn {
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return handler.querys.select(this);
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serialize(handler : Handler): serializeReturn {
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return handler.querys.select(handler,this);
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}
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query(db: DB) {
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const s = this.serialize(db.getHandler());
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return new Query(s[0], s[1]);
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return db.query(new Query(s[0], s[1]));
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}
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}
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@ -12,7 +12,7 @@ export type serializeReturn = [string, primaryData[]];
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export type attributeSettings = {
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unique?: boolean,
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A_I?: boolean,
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autoIncrement?: boolean,
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default?: primaryData,
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notNull?: boolean
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primaryKey?: boolean,
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