@grandlinex/bundle-postgresql
Version:
> Postgresql support GrandlineX using `pg`
72 lines (71 loc) • 2.48 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const core_1 = require("@grandlinex/core");
class PGUpdate extends core_1.CoreDBUpdate {
/**
* Initialize a new table in the database.
* This method is used to create a new table in the database.
* @param className
*/
initNewTable(className) {
return this.getDb().getEntityWrapper(className).init();
}
/**
* Alter a table to add a new column.
* @param className
* @param columName
* @param type
* @param notNull
* @param defaultValue
* @param deleteDefault
* @protected
*/
async alterTableAddColumn(className, columName, type, notNull, defaultValue, deleteDefault) {
const db = this.getDb();
const tableName = core_1.XUtil.camelToSnakeCase(className);
const query = [];
if (notNull && defaultValue !== undefined) {
query.push({
exec: `ALTER TABLE ${db.schemaName}.${tableName} ADD ${columName} ${type} NOT NULL DEFAULT ${defaultValue};`,
param: [],
});
}
else if (notNull) {
query.push({
exec: `ALTER TABLE ${db.schemaName}.${tableName} ADD ${columName} ${type} NOT NULL;`,
param: [],
});
}
else {
query.push({
exec: `ALTER TABLE ${db.schemaName}.${tableName} ADD ${columName} ${type};`,
param: [],
});
}
if (defaultValue !== undefined && deleteDefault) {
query.push({
exec: `ALTER TABLE ${db.schemaName}.${tableName} ALTER COLUMN ${columName} DROP DEFAULT ;`,
param: [],
});
}
return (await db.execScripts(query)).every((e) => e !== null);
}
/**
* Alter a table to delete a column.
* This method is used to remove a column from an existing table in the database.
* @param className
* @param columName
* @protected
*/
async alterTableDeleteColumn(className, columName) {
const db = this.getDb();
const tableName = core_1.XUtil.camelToSnakeCase(className);
const query = [];
query.push({
exec: `ALTER TABLE ${db.schemaName}.${tableName} DROP COLUMN ${columName};`,
param: [],
});
return (await db.execScripts(query)).every((e) => e !== null);
}
}
exports.default = PGUpdate;