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pg-columncompiler.js
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pg-columncompiler.js
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// PostgreSQL Column Compiler
// -------
const ColumnCompiler = require('../../../schema/columncompiler');
const { isObject } = require('../../../util/is');
const { toNumber } = require('../../../util/helpers');
const commentEscapeRegex = /(?<!')'(?!')/g;
class ColumnCompiler_PG extends ColumnCompiler {
constructor(client, tableCompiler, columnBuilder) {
super(client, tableCompiler, columnBuilder);
this.modifiers = ['nullable', 'defaultTo', 'comment'];
}
// Types
// ------
bit(column) {
return column.length !== false ? `bit(${column.length})` : 'bit';
}
// Create the column definition for an enum type.
// Using method "2" here: http://stackoverflow.com/a/10984951/525714
enu(allowed, options) {
options = options || {};
const values =
options.useNative && options.existingType
? undefined
: allowed.join("', '");
if (options.useNative) {
let enumName = '';
const schemaName = options.schemaName || this.tableCompiler.schemaNameRaw;
if (schemaName) {
enumName += `"${schemaName}".`;
}
enumName += `"${options.enumName}"`;
if (!options.existingType) {
this.tableCompiler.unshiftQuery(
`create type ${enumName} as enum ('${values}')`
);
}
return enumName;
}
return `text check (${this.formatter.wrap(this.args[0])} in ('${values}'))`;
}
decimal(precision, scale) {
if (precision === null) return 'decimal';
return `decimal(${toNumber(precision, 8)}, ${toNumber(scale, 2)})`;
}
json(jsonb) {
if (jsonb) this.client.logger.deprecate('json(true)', 'jsonb()');
return jsonColumn(this.client, jsonb);
}
jsonb() {
return jsonColumn(this.client, true);
}
datetime(withoutTz = false, precision) {
let useTz;
if (isObject(withoutTz)) {
({ useTz, precision } = withoutTz);
} else {
useTz = !withoutTz;
}
useTz = typeof useTz === 'boolean' ? useTz : true;
precision =
precision !== undefined && precision !== null
? '(' + precision + ')'
: '';
return `${useTz ? 'timestamptz' : 'timestamp'}${precision}`;
}
timestamp(withoutTz = false, precision) {
return this.datetime(withoutTz, precision);
}
// Modifiers:
// ------
comment(comment) {
const columnName = this.args[0] || this.defaults('columnName');
const escapedComment = comment
? `'${comment.replace(commentEscapeRegex, "''")}'`
: 'NULL';
this.pushAdditional(function () {
this.pushQuery(
`comment on column ${this.tableCompiler.tableName()}.` +
this.formatter.wrap(columnName) +
` is ${escapedComment}`
);
}, comment);
}
}
ColumnCompiler_PG.prototype.bigincrements = ({ primaryKey = true } = {}) =>
'bigserial' + (primaryKey ? ' primary key' : '');
ColumnCompiler_PG.prototype.increments = ({ primaryKey = true } = {}) =>
'serial' + (primaryKey ? ' primary key' : '');
ColumnCompiler_PG.prototype.bigint = 'bigint';
ColumnCompiler_PG.prototype.binary = 'bytea';
ColumnCompiler_PG.prototype.bool = 'boolean';
ColumnCompiler_PG.prototype.double = 'double precision';
ColumnCompiler_PG.prototype.floating = 'real';
ColumnCompiler_PG.prototype.smallint = 'smallint';
ColumnCompiler_PG.prototype.tinyint = 'smallint';
ColumnCompiler_PG.prototype.uuid = ({ useBinaryUuid = false } = {}) =>
useBinaryUuid ? 'binary(16)' : 'uuid';
function jsonColumn(client, jsonb) {
if (
!client.version ||
client.config.client === 'cockroachdb' ||
parseFloat(client.version) >= 9.2
) {
return jsonb ? 'jsonb' : 'json';
}
return 'text';
}
module.exports = ColumnCompiler_PG;