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utils.js
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utils.js
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const _ = require('lodash');
const os = require('os');
const path = require('path');
const Knex = require('knex');
const Promise = require('bluebird');
const objection = require('objection');
const pg = require('pg');
pg.types.setTypeParser(1700, 'text', parseFloat); // DECIMAL
pg.types.setTypeParser(20, 'text', parseInt); // BIGINT
const getNumber = s => parseInt(s.replace(/^\D*/, ''), 10);
module.exports = {
testDatabaseConfigs: [{
client: 'sqlite3',
connection: {
filename: path.join(os.tmpdir(), 'objection_find_test.db')
},
useNullAsDefault: true
}, {
client: 'postgres',
connection: {
host: '127.0.0.1',
database: 'objection_filter_test'
},
pool: {
min: 0,
max: 10
}
}, {
client: 'mysql',
connection: {
host: '127.0.0.1',
user: 'travis',
database: 'objection_filter_test'
},
pool: {
min: 0,
max: 10
}
}],
NUMERIC_SORT: (a, b) => a - b,
STRING_SORT: (a, b) => getNumber(a) - getNumber(b),
initialize: function (knexConfig) {
const knex = Knex(knexConfig);
return {
config: knexConfig,
models: createModels(knex),
knex: knex
};
},
dropDb: function (session) {
return session.knex.schema
.dropTableIfExists('Movie_Version')
.dropTableIfExists('Person_Movie')
.dropTableIfExists('Movie')
.dropTableIfExists('Category')
.dropTableIfExists('Animal')
.dropTableIfExists('Person');
},
createDb: function (session) {
return session.knex.schema
.createTable('Person', function (table) {
table.bigincrements('id').unsigned().primary();
table.integer('age');
table.biginteger('pid').unsigned().references('Person.id').index();
table.string('firstName');
table.string('lastName');
table.string('nickName');
})
.createTable('Category', function (table) {
table.bigincrements('id').unsigned().primary();
table.string('name').index();
})
.createTable('Animal', function (table) {
table.bigincrements('id').unsigned().primary();
table.biginteger('ownerId').unsigned().references('Person.id').index();
table.string('name').index();
})
.createTable('Movie', function (table) {
table.bigincrements('id').unsigned().primary();
table.biginteger('categoryId').unsigned().references('Category.id').index();
table.string('name').index();
table.string('code');
table.integer('seq').index();
})
.createTable('Person_Movie', function (table) {
table.bigincrements('id').unsigned().primary();
table.biginteger('actorId').unsigned().references('Person.id').index();
table.biginteger('movieId').unsigned().references('Movie.id').index();
})
.createTable('Movie_Version', function (table) {
table.biginteger('movieId').unsigned().references('Movie.id').index();
table.integer('version').index();
table.unique(['movieId', 'version']);
})
.then(function () {
if (session.config.client === 'postgres') {
// Index to speed up wildcard searches.
return Promise.join(
session.knex.raw('CREATE INDEX "movie_name_wildcard_index" ON "Movie" USING btree ("name" varchar_pattern_ops)'),
session.knex.raw('CREATE INDEX "animal_name_wildcard_index" ON "Animal" USING btree ("name" varchar_pattern_ops)')
);
}
});
},
/**
* Insert the test data.
*
* 10 Persons with names `F00 L09`, `F01 L08`, ...
* The previous person is the parent of the next one (the first person doesn't have a parent).
*
* Each person has 10 Pets `P00`, `P01`, `P02`, ...
* First person has pets 0 - 9, second 10 - 19 etc.
*
* Each person is an actor in 10 Movies `M00`, `M01`, `M02`, ...
* First person has movies 0 - 9, second 10 - 19 etc.
*
* Each movie has a category C00 to C90 (i.e. 10 categories)
*
* name | parent | pets | movies | category
* --------+---------+-----------+------------+----------
* F00 L09 | null | P00 - P09 | M99 - M90 | C00
* F01 L08 | F00 L09 | P10 - P19 | M89 - M80 | C01
* F02 L07 | F01 L08 | P20 - P29 | M79 - M79 | C02
* F03 L06 | F02 L07 | P30 - P39 | M69 - M60 | C03
* F04 L05 | F03 L06 | P40 - P49 | M59 - M50 | C04
* F05 L04 | F04 L05 | P50 - P59 | M49 - M40 | C05
* F06 L03 | F05 L04 | P60 - P69 | M39 - M30 | C06
* F07 L02 | F06 L03 | P70 - P79 | M29 - M20 | C07
* F08 L01 | F07 L02 | P80 - P89 | M19 - M10 | C08
* F09 L00 | F08 L01 | P90 - P99 | M09 - M00 | C09
*/
insertData: function (session, counts, progress) {
progress = progress || _.noop;
const C = 30;
const P = counts.persons;
const A = counts.pets;
const M = counts.movies;
const zeroPad = createZeroPad(Math.max(P * A, P * M));
const persons = _.times(P, function (p) {
return session.models.Person.fromJson({
id: p + 1,
firstName: 'F' + zeroPad(p),
lastName: 'L' + zeroPad(P - p - 1),
age: p * 10,
nickName: p <= 4 ? null : ('N' + zeroPad(p)),
category: {
id: p + 1,
name: 'C' + zeroPad(p)
},
pets: _.times(A, function (a) {
const id = p * A + a + 1;
return { id: id, name: 'P' + zeroPad(id - 1), ownerId: p + 1 };
}),
movies: _.times(M, function (m) {
const id = p * M + m + 1;
return {
id: id,
categoryId: p + 1,
name: 'M' + zeroPad(P * M - id),
code: p <= 4 ? null : ('C' + zeroPad(p)),
seq: Math.floor(Math.random() * 20)
};
}),
movieVersions: _.times(M, function (m) {
const id = p * M + m + 1;
return {
movieId: id,
version: 1
};
}),
personMovies: _.times(M, function (m) {
const id = p * M + m + 1;
return { actorId: p + 1, movieId: id };
})
});
});
return Promise.all(_.map(_.chunk(persons, C), function (personChunk) {
return session.knex('Person').insert(pick(personChunk, ['id', 'firstName', 'lastName', 'age', 'nickName']));
})).then(function() {
return Promise.all(_.map(_.chunk(persons, C), function (personChunk) {
return session.knex('Category').insert(
pick(personChunk, 'category').map(item => item.category)
);
}));
}).then(function () {
return session.knex('Person').update('pid', session.knex.raw('id - 1')).where('id', '>', 1);
}).then(function () {
progress('1/5');
return Promise.all(_.map(_.chunk(_.flatten(_.map(persons, 'pets')), C), function (animalChunk) {
return session.knex('Animal').insert(animalChunk);
}));
}).then(function () {
progress('2/5');
return Promise.all(_.map(_.chunk(_.flatten(_.map(persons, 'movies')), C), function (movieChunk) {
return session.knex('Movie').insert(movieChunk);
}));
}).then(function () {
progress('3/5');
return Promise.all(_.map(_.chunk(_.flatten(_.map(persons, 'personMovies')), C), function (movieChunk) {
return session.knex('Person_Movie').insert(movieChunk);
}));
}).then(function () {
progress('4/5');
return Promise.all(_.map(_.chunk(_.flatten(_.map(persons, 'movieVersions')), C), function (movieVersionChunk) {
return session.knex('Movie_Version').insert(movieVersionChunk);
}));
}).then(function () {
progress('5/5');
});
}
};
function createModels(knex) {
class Person extends objection.Model {
static get tableName() {
return 'Person';
}
firstName() {
return this.firstName + ' ' + this.lastName;
}
static get relationMappings() {
return {
parent: {
relation: objection.BelongsToOneRelation,
modelClass: Person,
join: {
from: 'Person.pid',
to: 'Person.id'
}
},
pets: {
relation: objection.HasManyRelation,
modelClass: Animal,
join: {
from: 'Person.id',
to: 'Animal.ownerId'
}
},
movies: {
relation: objection.ManyToManyRelation,
modelClass: Movie,
join: {
from: 'Person.id',
through: {
from: 'Person_Movie.actorId',
to: 'Person_Movie.movieId'
},
to: 'Movie.id'
}
}
};
}
}
class Animal extends objection.Model {
static get tableName() {
return 'Animal';
}
static get relationMappings() {
return {
owner: {
relation: objection.BelongsToOneRelation,
modelClass: Person,
join: {
from: 'Animal.ownerId',
to: 'Person.id'
}
}
};
}
}
class Movie extends objection.Model {
static get tableName() {
return 'Movie';
}
static get relationMappings() {
return {
category: {
relation: objection.BelongsToOneRelation,
modelClass: Category,
join: {
from: 'Movie.categoryId',
to: 'Category.id'
}
},
version: {
relation: objection.HasOneRelation,
modelClass: MovieVersion,
join: {
from: 'Movie.id',
to: 'Movie_Version.movieId'
}
}
};
}
}
class Category extends objection.Model {
static get tableName() {
return 'Category';
}
}
class MovieVersion extends objection.Model {
static get idColumn() {
return ['movieId', 'version'];
}
static get tableName() {
return 'Movie_Version';
}
static get relationMappings() {
return {
movie: {
relation: objection.HasOneRelation,
modelClass: Movie,
join: {
from: 'Movie_Version.movieId',
to: 'Movie.id'
}
}
};
}
}
Person.knex(knex);
Animal.knex(knex);
Movie.knex(knex);
Category.knex(knex);
MovieVersion.knex(knex);
return {
Person: Person,
Animal: Animal,
Movie: Movie,
Category: Category,
MovieVersion: MovieVersion
};
}
function createZeroPad(N) {
// log(x) / log(10) == log10(x)
const n = Math.ceil(Math.log(N) / Math.log(10));
return function (num) {
num = num.toString();
while (num.length < n) {
num = '0' + num;
}
return num;
};
}
function pick(arr, picks) {
return _.map(arr, function (obj) {
return _.pick(obj, picks);
});
}