mirror of
https://github.com/drawdb-io/drawdb.git
synced 2026-02-12 02:00:40 +08:00
Import from postgres
This commit is contained in:
1ilit
@@ -1,6 +1,7 @@
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import { DB } from "../../data/constants";
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import { toMariaDB } from "./mariadb";
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import { toMySQL } from "./mysql";
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import { toPostgres } from "./postgres";
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import { toSqlite } from "./sqlite";
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export function exportSQL(diagram) {
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@@ -10,7 +11,7 @@ export function exportSQL(diagram) {
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case DB.MYSQL:
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return toMySQL(diagram);
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case DB.POSTGRES:
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return "hi from postgres";
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return toPostgres(diagram);
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case DB.MARIADB:
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return toMariaDB(diagram);
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case DB.MSSQL:
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91
src/utils/exportSQL/postgres.js
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91
src/utils/exportSQL/postgres.js
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@@ -0,0 +1,91 @@
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import { dbToTypes } from "../../data/datatypes";
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import { parseDefault } from "./shared";
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export function toPostgres(diagram) {
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return `${diagram.types.map((type) => {
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const typeStatements = type.fields
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.filter((f) => f.type === "ENUM" || f.type === "SET")
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.map(
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(f) =>
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`CREATE TYPE "${f.name}_t" AS ENUM (${f.values
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.map((v) => `'${v}'`)
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.join(", ")});\n`,
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);
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if (typeStatements.length > 0) {
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return (
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typeStatements.join("") +
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`${
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type.comment === "" ? "" : `/**\n${type.comment}\n*/\n`
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}CREATE TYPE ${type.name} AS (\n${type.fields
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.map((f) => `\t${f.name} ${f.type}`)
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.join("\n")}\n);`
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);
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} else {
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return `${
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type.comment === "" ? "" : `/**\n${type.comment}\n*/\n`
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}CREATE TYPE ${type.name} AS (\n${type.fields
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.map((f) => `\t${f.name} ${f.type}`)
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.join("\n")}\n);`;
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}
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})}\n${diagram.tables
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.map(
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(table) =>
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`${table.comment === "" ? "" : `/**\n${table.comment}\n*/\n`}${
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table.fields.filter((f) => f.type === "ENUM" || f.type === "SET")
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.length > 0
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? `${table.fields
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.filter((f) => f.type === "ENUM" || f.type === "SET")
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.map(
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(f) =>
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`CREATE TYPE "${f.name}_t" AS ENUM (${f.values
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.map((v) => `'${v}'`)
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.join(", ")});\n\n`,
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)}`
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: ""
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}CREATE TABLE "${table.name}" (\n${table.fields
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.map(
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(field) =>
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`${field.comment === "" ? "" : `\t-- ${field.comment}\n`}\t"${
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field.name
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}" ${field.type}${field.notNull ? " NOT NULL" : ""}${
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field.default !== ""
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? ` DEFAULT ${parseDefault(field, diagram.database)}`
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: ""
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}${
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field.check === "" ||
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!dbToTypes[diagram.database][field.type].hasCheck
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? ""
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: ` CHECK(${field.check})`
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}`,
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)
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.join(",\n")}${
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table.fields.filter((f) => f.primary).length > 0
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? `,\n\tPRIMARY KEY(${table.fields
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.filter((f) => f.primary)
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.map((f) => `"${f.name}"`)
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.join(", ")})`
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: ""
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}\n);\n${
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table.indices.length > 0
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? `${table.indices.map(
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(i) =>
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`\nCREATE ${i.unique ? "UNIQUE " : ""}INDEX "${
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i.name
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}"\nON "${table.name}" (${i.fields
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.map((f) => `"${f}"`)
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.join(", ")});`,
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)}`
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: ""
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}`,
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)
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.join("\n")}\n${diagram.references
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.map(
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(r) =>
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`ALTER TABLE "${diagram.tables[r.startTableId].name}"\nADD FOREIGN KEY("${
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diagram.tables[r.startTableId].fields[r.startFieldId].name
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}") REFERENCES "${diagram.tables[r.endTableId].name}"("${
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diagram.tables[r.endTableId].fields[r.endFieldId].name
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}")\nON UPDATE ${r.updateConstraint.toUpperCase()} ON DELETE ${r.deleteConstraint.toUpperCase()};`,
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)
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.join("\n")}`;
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}
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@@ -6,6 +6,7 @@ import {
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} from "../../data/constants";
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import { fromMariaDB } from "./mariadb";
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import { fromMySQL } from "./mysql";
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import { fromPostgres } from "./postgres";
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import { fromSQLite } from "./sqlite";
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export function importSQL(ast, toDb = DB.MYSQL, diagramDb = DB.GENERIC) {
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@@ -18,7 +19,7 @@ export function importSQL(ast, toDb = DB.MYSQL, diagramDb = DB.GENERIC) {
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diagram = fromMySQL(ast, diagramDb);
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break;
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case DB.POSTGRES:
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diagram = { tables: [], relationships: [] };
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diagram = fromPostgres(ast, diagramDb);
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break;
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case DB.MARIADB:
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diagram = fromMariaDB(ast, diagramDb);
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245
src/utils/importSQL/postgres.js
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245
src/utils/importSQL/postgres.js
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@@ -0,0 +1,245 @@
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import { Cardinality, DB } from "../../data/constants";
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import { dbToTypes } from "../../data/datatypes";
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import { buildSQLFromAST } from "./shared";
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const affinity = {
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[DB.POSTGRES]: new Proxy(
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{ INT: "INTEGER" },
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{ get: (target, prop) => (prop in target ? target[prop] : "BLOB") },
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),
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[DB.GENERIC]: new Proxy(
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{
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INT: "INTEGER",
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MEDIUMINT: "INTEGER",
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BIT: "BOOLEAN",
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},
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{ get: (target, prop) => (prop in target ? target[prop] : "BLOB") },
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),
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};
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export function fromPostgres(ast, diagramDb = DB.GENERIC) {
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const tables = [];
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const relationships = [];
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ast.forEach((e) => {
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if (e.type === "create") {
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if (e.keyword === "table") {
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const table = {};
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table.name = e.table[0].table;
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table.comment = "";
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table.color = "#175e7a";
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table.fields = [];
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table.indices = [];
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table.id = tables.length;
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e.create_definitions.forEach((d) => {
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if (d.resource === "column") {
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const field = {};
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field.name = d.column.column.expr.value;
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let type = d.definition.dataType;
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if (!dbToTypes[diagramDb][type]) {
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type = affinity[diagramDb][type];
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}
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field.type = type;
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if (d.definition.expr && d.definition.expr.type === "expr_list") {
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field.values = d.definition.expr.value.map((v) => v.value);
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}
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field.comment = "";
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field.unique = false;
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if (d.unique) field.unique = true;
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field.increment = false;
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if (d.auto_increment) field.increment = true;
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field.notNull = false;
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if (d.nullable) field.notNull = true;
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field.primary = false;
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if (d.primary_key) field.primary = true;
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field.default = "";
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if (d.default_val) {
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let defaultValue = "";
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if (d.default_val.value.type === "function") {
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defaultValue = d.default_val.value.name.name[0].value;
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if (d.default_val.value.args) {
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defaultValue +=
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"(" +
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d.default_val.value.args.value
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.map((v) => {
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if (
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v.type === "single_quote_string" ||
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v.type === "double_quote_string"
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)
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return "'" + v.value + "'";
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return v.value;
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})
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.join(", ") +
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")";
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}
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} else if (d.default_val.value.type === "null") {
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defaultValue = "NULL";
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} else {
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defaultValue = d.default_val.value.value.toString();
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}
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field.default = defaultValue;
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}
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if (d.definition["length"]) {
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if (d.definition.scale) {
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field.size = d.definition["length"] + "," + d.definition.scale;
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} else {
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field.size = d.definition["length"];
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}
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}
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field.check = "";
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if (d.check) {
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field.check = buildSQLFromAST(d.check.definition[0]);
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}
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table.fields.push(field);
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} else if (d.resource === "constraint") {
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if (d.constraint_type === "primary key") {
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d.definition.forEach((c) => {
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table.fields.forEach((f) => {
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if (f.name === c.column && !f.primary) {
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f.primary = true;
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}
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});
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});
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} else if (d.constraint_type === "FOREIGN KEY") {
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const relationship = {};
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const startTableId = table.id;
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const startTable = e.table[0].table;
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const startField = d.definition[0].column.expr.value;
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const endTable = d.reference_definition.table[0].table;
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const endField =
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d.reference_definition.definition[0].column.expr.value;
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const endTableId = tables.findIndex((t) => t.name === endTable);
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if (endTableId === -1) return;
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const endFieldId = tables[endTableId].fields.findIndex(
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(f) => f.name === endField,
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);
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if (endField === -1) return;
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const startFieldId = table.fields.findIndex(
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(f) => f.name === startField,
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);
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if (startFieldId === -1) return;
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relationship.name = startTable + "_" + startField + "_fk";
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relationship.startTableId = startTableId;
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relationship.endTableId = endTableId;
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relationship.endFieldId = endFieldId;
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relationship.startFieldId = startFieldId;
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let updateConstraint = "No action";
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let deleteConstraint = "No action";
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d.reference_definition.on_action.forEach((c) => {
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if (c.type === "on update") {
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updateConstraint = c.value.value;
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updateConstraint =
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updateConstraint[0].toUpperCase() +
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updateConstraint.substring(1);
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} else if (c.type === "on delete") {
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deleteConstraint = c.value.value;
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deleteConstraint =
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deleteConstraint[0].toUpperCase() +
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deleteConstraint.substring(1);
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}
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});
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relationship.updateConstraint = updateConstraint;
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relationship.deleteConstraint = deleteConstraint;
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relationship.cardinality = Cardinality.ONE_TO_ONE;
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relationships.push(relationship);
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}
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}
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});
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table.fields.forEach((f, j) => {
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f.id = j;
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});
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tables.push(table);
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} else if (e.keyword === "index") {
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const index = {};
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index.name = e.index;
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index.unique = false;
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if (e.index_type === "unique") index.unique = true;
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index.fields = [];
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e.index_columns.forEach((f) => index.fields.push(f.column));
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let found = -1;
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tables.forEach((t, i) => {
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if (found !== -1) return;
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if (t.name === e.table.table) {
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t.indices.push(index);
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found = i;
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}
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});
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if (found !== -1) tables[found].indices.forEach((i, j) => (i.id = j));
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}
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} else if (e.type === "alter") {
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e.expr.forEach((expr) => {
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if (
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expr.action === "add" &&
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expr.create_definitions.constraint_type === "FOREIGN KEY"
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) {
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const relationship = {};
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const startTable = e.table[0].table;
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const startField = expr.create_definitions.definition[0].column;
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const endTable =
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expr.create_definitions.reference_definition.table[0].table;
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const endField =
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expr.create_definitions.reference_definition.definition[0].column;
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let updateConstraint = "No action";
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let deleteConstraint = "No action";
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expr.create_definitions.reference_definition.on_action.forEach(
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(c) => {
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if (c.type === "on update") {
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updateConstraint = c.value.value;
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updateConstraint =
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updateConstraint[0].toUpperCase() +
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updateConstraint.substring(1);
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} else if (c.type === "on delete") {
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deleteConstraint = c.value.value;
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deleteConstraint =
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deleteConstraint[0].toUpperCase() +
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deleteConstraint.substring(1);
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}
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},
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);
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const startTableId = tables.findIndex((t) => t.name === startTable);
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if (startTable === -1) return;
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const endTableId = tables.findIndex((t) => t.name === endTable);
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if (endTableId === -1) return;
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const endFieldId = tables[endTableId].fields.findIndex(
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(f) => f.name === endField,
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);
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if (endField === -1) return;
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const startFieldId = tables[startTableId].fields.findIndex(
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(f) => f.name === startField,
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);
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if (startFieldId === -1) return;
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relationship.name = startTable + "_" + startField + "_fk";
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relationship.startTableId = startTableId;
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relationship.startFieldId = startFieldId;
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relationship.endTableId = endTableId;
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relationship.endFieldId = endFieldId;
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relationship.updateConstraint = updateConstraint;
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relationship.deleteConstraint = deleteConstraint;
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relationship.cardinality = Cardinality.ONE_TO_ONE;
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relationships.push(relationship);
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relationships.forEach((r, i) => (r.id = i));
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}
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});
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}
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});
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relationships.forEach((r, i) => (r.id = i));
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return { tables, relationships };
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}
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Block a user