src/defaultHandler.ts

@@ -1,6 +1,6 @@
 import { Attribute, DB, Table } from "./db"
 import { Aggregation, checkConstraint, Constraint, Datatype, foreignConstraint, Modifier, uniqueConstraint } from "./dbStructure"
-import { Query, QueryBuilder, selectQuery } from "./query"
+import { insertQuery, Query, QueryBuilder, removeQuery, selectQuery, updateQuery } from "./query"
 import { allModifierInput, onAction, primaryData, serializeReturn } from "./types"
 
 export class Handler {
@@ -261,6 +261,60 @@ export class Handler {
 
             return builder;
         },
+        insert: (hander: Handler, q: insertQuery): QueryBuilder => {
+            const qb = new QueryBuilder();
+            qb.addCode("INSERT INTO ");
+            qb.addCode(q.attrs[0].table.serialize(hander));
+            qb.addCode("(");
+            qb.addCodeCommaSeperated(q.attrs.map(a => a.serialize(hander)));
+            qb.addCode(") ");
+            if (q.select == null) {
+                qb.addCode("VALUES ");
+                for (let i = 0; i < q.values.length; i++) {
+                    qb.addCode("(");
+                    qb.addInjectionCommaSeperated(q.values[i]);
+                    qb.addCode(")");
+                    if (i + 1 < q.values.length) qb.addCode(",");
+                }
+            } else {
+                qb.append(q.select.serialize(hander));
+            }
+            return qb;
+        },
+        update: (handler: Handler, q: updateQuery): QueryBuilder => {
+            const qb = new QueryBuilder();
+            qb.addCode("UPDATE ");
+            qb.addCode(q.table.serialize(handler));
+            qb.addCode(" SET ");
+            for (let i = 0; i < q.setD.length; i++) {
+                const s = q.setD[i];
+                qb.addCode(s[0].serialize(handler));
+                qb.addCode(" = (");
+                if (s[1] instanceof Attribute) qb.addCode(s[1].serialize(handler));
+                else if (s[1] instanceof Modifier || s[1] instanceof selectQuery || s[1] instanceof Aggregation) {
+                    qb.append(s[1].serialize(handler));
+                } else {
+                    qb.addInjection(s[1]);
+                }
+                qb.addCode(")");
+                if (i + 1 < q.setD.length) qb.addCode(", ");
+            }
+            if (q.whereD) {
+                qb.addCode(" where ");
+                qb.append(q.whereD.serialize(handler));
+            }
+            return qb;
+        },
+        remove: (handler: Handler, q: removeQuery): QueryBuilder =>{
+            const qb = new QueryBuilder();
+            qb.addCode("DELETE FROM ");
+            qb.addCode(q.table.serialize(handler));
+            if (q.whereD) {
+                qb.addCode(" where ");
+                qb.append(q.whereD.serialize(handler));
+            }
+            return qb;
+        },
         listTables: (handler: Handler, db: DB) => {
             const qb = new QueryBuilder();
             qb.addCode(`SELECT * FROM information_schema.tables where TABLE_SCHEMA = `);
@@ -505,22 +559,34 @@ export class Handler {
             const builder = new QueryBuilder();
             if (a[0] instanceof Attribute) builder.addCode(a[0].toString());
             else if (a[0] instanceof Modifier || a[0] instanceof selectQuery || a[0] instanceof Aggregation) {
-                const builder = new QueryBuilder();
                 builder.append(a[0].serialize(handler));
-                return builder;
             } else {
                 builder.addInjection(a[0]);
             }
             builder.addCode(" LIKE ");
             if (a[1] instanceof Attribute) builder.addCode(a[1].toString());
             else if (a[1] instanceof Modifier || a[1] instanceof selectQuery || a[1] instanceof Aggregation) {
-                const builder = new QueryBuilder();
                 builder.append(a[1].serialize(handler));
-                return builder;
             } else {
                 builder.addInjection(a[1]);
             }
             return builder;
+        },
+        concat: (handler: Handler, a: allModifierInput[]): QueryBuilder => {
+            const builder = new QueryBuilder();
+            builder.addCode("CONCAT(");
+            for (let i = 0; i < a.length; i++) {
+                const e = a[i];
+                if (e instanceof Attribute) builder.addCode(e.toString());
+                else if (e instanceof Modifier || e instanceof selectQuery || e instanceof Aggregation) {
+                    builder.append(e.serialize(handler));
+                } else {
+                    builder.addInjection(e);
+                }
+                if (i < a.length - 1) builder.addCode(", ");
+            }
+            builder.addCode(")");
+            return builder;
         }
     }
 

src/funcs.ts

@@ -1,26 +1,27 @@
-import { Attribute } from "./db";
+import { Attribute, Table } from "./db";
-import { Aggregation, BooleanModifier, checkConstraint, Datatype, foreignConstraint, NumberModifier, uniqueConstraint } from "./dbStructure";
+import { Aggregation, BooleanModifier, checkConstraint, Datatype, foreignConstraint, NumberModifier, StringModifier, uniqueConstraint } from "./dbStructure";
-import { selectQuery } from "./query";
+import { insertQuery, removeQuery, selectQuery, updateQuery } from "./query";
-import { allModifierInput, primaryData, selectElements, selectFromElements } from "./types";
+import { allModifierInput, selectElements, selectFromElements } from "./types";
 
 //modifiers
-export const and = (...args: (BooleanModifier)[]) => new BooleanModifier("and", args);
+export const and = (...args: BooleanModifier[]) => new BooleanModifier("and", args);
-export const or = (...args: (BooleanModifier)[]) => new BooleanModifier("or", args);
+export const or = (...args: BooleanModifier[]) => new BooleanModifier("or", args);
-export const ge = (...args: (allModifierInput)[]) => new BooleanModifier("ge", args);
+export const ge = (...args: allModifierInput[]) => new BooleanModifier("ge", args);
-export const geq = (...args: (allModifierInput)[]) => new BooleanModifier("geq", args);
+export const geq = (...args: allModifierInput[]) => new BooleanModifier("geq", args);
-export const eq = (...args: (allModifierInput)[]) => new BooleanModifier("eq", args);
+export const eq = (...args: allModifierInput[]) => new BooleanModifier("eq", args);
-export const leq = (...args: (allModifierInput)[]) => new BooleanModifier("leq", args);
+export const leq = (...args: allModifierInput[]) => new BooleanModifier("leq", args);
-export const le = (...args: (allModifierInput)[]) => new BooleanModifier("le", args);
+export const le = (...args: allModifierInput[]) => new BooleanModifier("le", args);
-export const plus = (...args: (allModifierInput)[]) => new NumberModifier("plus", args);
+export const plus = (...args: allModifierInput[]) => new NumberModifier("plus", args);
-export const minus = (...args: (allModifierInput)[]) => new NumberModifier("minus", args);
+export const minus = (...args: allModifierInput[]) => new NumberModifier("minus", args);
-export const mult = (...args: (allModifierInput)[]) => new NumberModifier("mult", args);
+export const mult = (...args: allModifierInput[]) => new NumberModifier("mult", args);
-export const divide = (...args: (allModifierInput)[]) => new NumberModifier("divide", args);
+export const divide = (...args: allModifierInput[]) => new NumberModifier("divide", args);
 
-export const not = (...args: (allModifierInput)[]) => new BooleanModifier("not", args);
+export const not = (...args: allModifierInput[]) => new BooleanModifier("not", args);
 export const like = (a: allModifierInput, b: allModifierInput) => new BooleanModifier("like", [a, b]);
 
-//aggregations
+export const concat = (...args: allModifierInput[]) => new StringModifier("concat", args);
 
+//aggregations
 export const count = (a: Attribute) => new Aggregation("count", a);
 export const sum = (a: Attribute) => new Aggregation("sum", a);
 export const avg = (a: Attribute) => new Aggregation("avg", a);
@@ -29,6 +30,9 @@ export const max = (a: Attribute) => new Aggregation("max", a);
 
 //query
 export const select = (args: selectElements[], from: selectFromElements) => new selectQuery(args, from);
+export const insert = (...attrs: Attribute[]) => new insertQuery(attrs);
+export const update = (table: Table) => new updateQuery(table);
+export const remove = (table: Table) => new removeQuery(table);
 
 //datatypes
 

src/query.ts

@@ -1,7 +1,7 @@
-import { Attribute, DB } from "./db";
+import { Attribute, DB, Table } from "./db";
 import { BooleanModifier, Modifier } from "./dbStructure";
 import { Handler } from "./defaultHandler";
-import { primaryData, selectElements, selectFromElements, serializeReturn } from "./types";
+import { allModifierInput, primaryData, selectElements, selectFromElements, serializeReturn } from "./types";
 
 
 export class Query {
@@ -99,3 +99,89 @@ export class selectQuery {
         return await db.query(s);
     }
 }
+
+export class insertQuery {
+    attrs: Attribute[];
+    values: primaryData[][] = [];
+    select: selectQuery | null = null;
+    constructor(attrs: Attribute[]) {
+        if (attrs.length == 0) throw new Error("Insertion must be done in at least one Column.");
+        for (let i = 0; i < attrs.length; i++) {
+            if (attrs[i].table != attrs[0].table) throw new Error("Insertion Columns must be in one Table.");
+        }
+        this.attrs = attrs;
+    }
+    add(...data: primaryData[]) {
+        if (this.select != null) throw new Error("Can not add Values when using select!");
+        this.values.push(data);
+        return this;
+    }
+    addValues(...data: primaryData[][]) {
+        if (this.select != null) throw new Error("Can not add Values when using select!");
+        this.values.push(...data);
+        return this;
+    }
+    setSelect(state: selectQuery) {
+        if (this.values.length != 0) throw new Error("Can not add select when using values!");
+        this.select = state;
+        return this;
+    }
+    serialize(handler: Handler): QueryBuilder {
+        return handler.querys.insert(handler, this);
+    }
+    async query(db: DB) {
+        const handler = db.getHandler();
+        const builder = this.serialize(handler);
+        const s = handler.builders.query(builder);
+        return await db.query(s);
+    }
+}
+
+export class updateQuery {
+    table: Table;
+    setD: ([Attribute, allModifierInput])[] = [];
+    whereD: BooleanModifier | null = null;
+
+    constructor(table: Table) {
+        this.table = table;
+    }
+    set(attr: Attribute, value: allModifierInput) {
+        if (this.table != attr.table) throw new Error("Can only edit columns of the updated table!");
+        this.setD.push([attr, value]);
+        return this;
+    }
+    where(w: BooleanModifier) {
+        this.whereD = w;
+        return this;
+    }
+    serialize(handler: Handler): QueryBuilder {
+        return handler.querys.update(handler, this);
+    }
+    async query(db: DB) {
+        const handler = db.getHandler();
+        const builder = this.serialize(handler);
+        const s = handler.builders.query(builder);
+        return await db.query(s);
+    }
+}
+
+export class removeQuery {
+    table: Table;
+    whereD: BooleanModifier | null = null;
+    constructor(table: Table) {
+        this.table = table;
+    }
+    where(w: BooleanModifier) {
+        this.whereD = w;
+        return this;
+    }
+    serialize(handler: Handler): QueryBuilder {
+        return handler.querys.remove(handler, this);
+    }
+    async query(db: DB) {
+        const handler = db.getHandler();
+        const builder = this.serialize(handler);
+        const s = handler.builders.query(builder);
+        return await db.query(s);
+    }
+}