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188 lines
6.1 KiB
TypeScript
188 lines
6.1 KiB
TypeScript
// Loaded from https://raw.githubusercontent.com/denjucks/dex/master/lib/dialects/postgres/schema/tablecompiler.js
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/* eslint max-len: 0 */
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// PostgreSQL Table Builder & Compiler
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// -------
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import inherits from '../../../deps/inherits@2.0.4/inherits.js';
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import TableCompiler from '../../../schema/tablecompiler.js';
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import _ from '../../../deps/lodash@4.17.15/index.js';
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const has = _.has;
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function TableCompiler_PG() {
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TableCompiler.apply(this, arguments);
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}
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inherits(TableCompiler_PG, TableCompiler);
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// Compile a rename column command.
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TableCompiler_PG.prototype.renameColumn = function (from, to) {
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return this.pushQuery({
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sql: `alter table ${this.tableName()} rename ${this.formatter.wrap(
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from
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)} to ${this.formatter.wrap(to)}`,
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});
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};
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TableCompiler_PG.prototype.compileAdd = function (builder) {
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const table = this.formatter.wrap(builder);
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const columns = this.prefixArray('add column', this.getColumns(builder));
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return this.pushQuery({
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sql: `alter table ${table} ${columns.join(', ')}`,
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});
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};
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// Adds the "create" query to the query sequence.
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TableCompiler_PG.prototype.createQuery = function (columns, ifNot) {
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const createStatement = ifNot
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? 'create table if not exists '
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: 'create table ';
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let sql =
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createStatement + this.tableName() + ' (' + columns.sql.join(', ') + ')';
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if (this.single.inherits)
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sql += ` inherits (${this.formatter.wrap(this.single.inherits)})`;
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this.pushQuery({
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sql,
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bindings: columns.bindings,
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});
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const hasComment = has(this.single, 'comment');
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if (hasComment) this.comment(this.single.comment);
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};
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TableCompiler_PG.prototype.addColumns = function (
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columns,
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prefix,
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colCompilers
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) {
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if (prefix === this.alterColumnsPrefix) {
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// alter columns
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for (const col of colCompilers) {
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const quotedTableName = this.tableName();
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const type = col.getColumnType();
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// We'd prefer to call this.formatter.wrapAsIdentifier here instead, however the context passed to
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// `this` instance is not that of the column, but of the table. Thus, we unfortunately have to call
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// `wrapIdentifier` here as well (it is already called once on the initial column operation) to give
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// our `alter` operation the correct `queryContext`. Refer to issue #2606 and PR #2612.
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const colName = this.client.wrapIdentifier(
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col.getColumnName(),
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col.columnBuilder.queryContext()
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);
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this.pushQuery({
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sql: `alter table ${quotedTableName} alter column ${colName} drop default`,
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bindings: [],
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});
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this.pushQuery({
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sql: `alter table ${quotedTableName} alter column ${colName} drop not null`,
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bindings: [],
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});
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this.pushQuery({
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sql: `alter table ${quotedTableName} alter column ${colName} type ${type} using (${colName}::${type})`,
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bindings: [],
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});
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const defaultTo = col.modified['defaultTo'];
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if (defaultTo) {
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const modifier = col.defaultTo.apply(col, defaultTo);
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this.pushQuery({
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sql: `alter table ${quotedTableName} alter column ${colName} set ${modifier}`,
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bindings: [],
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});
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}
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const nullable = col.modified['nullable'];
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if (nullable && nullable[0] === false) {
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this.pushQuery({
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sql: `alter table ${quotedTableName} alter column ${colName} set not null`,
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bindings: [],
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});
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}
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}
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} else {
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// base class implementation for normal add
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TableCompiler.prototype.addColumns.call(this, columns, prefix);
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}
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};
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// Compiles the comment on the table.
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TableCompiler_PG.prototype.comment = function (comment) {
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this.pushQuery(
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`comment on table ${this.tableName()} is '${this.single.comment}'`
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);
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};
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// Indexes:
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// -------
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TableCompiler_PG.prototype.primary = function (columns, constraintName) {
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constraintName = constraintName
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? this.formatter.wrap(constraintName)
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: this.formatter.wrap(`${this.tableNameRaw}_pkey`);
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this.pushQuery(
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`alter table ${this.tableName()} add constraint ${constraintName} primary key (${this.formatter.columnize(
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columns
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)})`
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);
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};
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TableCompiler_PG.prototype.unique = function (columns, indexName) {
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indexName = indexName
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? this.formatter.wrap(indexName)
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: this._indexCommand('unique', this.tableNameRaw, columns);
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this.pushQuery(
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`alter table ${this.tableName()} add constraint ${indexName}` +
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' unique (' +
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this.formatter.columnize(columns) +
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')'
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);
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};
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TableCompiler_PG.prototype.index = function (columns, indexName, indexType) {
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indexName = indexName
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? this.formatter.wrap(indexName)
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: this._indexCommand('index', this.tableNameRaw, columns);
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this.pushQuery(
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`create index ${indexName} on ${this.tableName()}${
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(indexType && ` using ${indexType}`) || ''
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}` +
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' (' +
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this.formatter.columnize(columns) +
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')'
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);
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};
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TableCompiler_PG.prototype.dropPrimary = function (constraintName) {
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constraintName = constraintName
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? this.formatter.wrap(constraintName)
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: this.formatter.wrap(this.tableNameRaw + '_pkey');
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this.pushQuery(
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`alter table ${this.tableName()} drop constraint ${constraintName}`
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);
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};
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TableCompiler_PG.prototype.dropIndex = function (columns, indexName) {
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indexName = indexName
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? this.formatter.wrap(indexName)
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: this._indexCommand('index', this.tableNameRaw, columns);
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indexName = this.schemaNameRaw
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? `${this.formatter.wrap(this.schemaNameRaw)}.${indexName}`
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: indexName;
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this.pushQuery(`drop index ${indexName}`);
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};
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TableCompiler_PG.prototype.dropUnique = function (columns, indexName) {
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indexName = indexName
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? this.formatter.wrap(indexName)
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: this._indexCommand('unique', this.tableNameRaw, columns);
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this.pushQuery(
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`alter table ${this.tableName()} drop constraint ${indexName}`
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);
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};
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TableCompiler_PG.prototype.dropForeign = function (columns, indexName) {
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indexName = indexName
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? this.formatter.wrap(indexName)
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: this._indexCommand('foreign', this.tableNameRaw, columns);
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this.pushQuery(
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`alter table ${this.tableName()} drop constraint ${indexName}`
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);
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};
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export default TableCompiler_PG;
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