waterline-postgresql
Version:
PostgreSQL Adapter for Sails and Waterline
120 lines (101 loc) • 4.46 kB
JavaScript
var _ = require('lodash');
var inherits = require('inherits');
var TableCompiler = require('../../../schema/tablecompiler');
// Table Compiler
// -------
function TableCompiler_SQLite3() {
TableCompiler.apply(this, arguments);
this.primaryKey = void 0;
}
inherits(TableCompiler_SQLite3, TableCompiler);
// Create a new table.
TableCompiler_SQLite3.prototype.createQuery = function(columns, ifNot) {
var createStatement = ifNot ? 'create table if not exists ' : 'create table ';
var sql = createStatement + this.tableName() + ' (' + columns.sql.join(', ');
// SQLite forces primary keys to be added when the table is initially created
// so we will need to check for a primary key commands and add the columns
// to the table's declaration here so they can be created on the tables.
sql += this.foreignKeys() || '';
sql += this.primaryKeys() || '';
sql += ')';
this.pushQuery(sql);
};
TableCompiler_SQLite3.prototype.addColumns = function(columns) {
for (var i = 0, l = columns.sql.length; i < l; i++) {
this.pushQuery({
sql: 'alter table ' + this.tableName() + ' add column ' + columns.sql[i],
bindings: columns.bindings[i]
});
}
};
// Compile a drop unique key command.
TableCompiler_SQLite3.prototype.dropUnique = function(columns, indexName) {
indexName = indexName || this._indexCommand('unique', this.tableNameRaw, columns);
this.pushQuery('drop index ' + indexName);
};
TableCompiler_SQLite3.prototype.dropIndex = function(columns, indexName) {
indexName = indexName || this._indexCommand('index', this.tableNameRaw, columns);
this.pushQuery('drop index ' + indexName);
};
// Compile a unique key command.
TableCompiler_SQLite3.prototype.unique = function(columns, indexName) {
indexName = indexName || this._indexCommand('unique', this.tableNameRaw, columns);
columns = this.formatter.columnize(columns);
this.pushQuery('create unique index ' + indexName + ' on ' + this.tableName() + ' (' + columns + ')');
};
// Compile a plain index key command.
TableCompiler_SQLite3.prototype.index = function(columns, indexName) {
indexName = indexName || this._indexCommand('index', this.tableNameRaw, columns);
columns = this.formatter.columnize(columns);
this.pushQuery('create index ' + indexName + ' on ' + this.tableName() + ' (' + columns + ')');
};
TableCompiler_SQLite3.prototype.primary =
TableCompiler_SQLite3.prototype.foreign = function() {
if (this.method !== 'create' && this.method !== 'createIfNot') {
console.warn('SQLite3 Foreign & Primary keys may only be added on create');
}
};
TableCompiler_SQLite3.prototype.primaryKeys = function() {
var pks = _.where(this.grouped.alterTable || [], {method: 'primary'});
if (pks.length > 0 && pks[0].args.length > 0) {
var args = Array.isArray(pks[0].args[0]) ? pks[0].args[0] : pks[0].args;
return ', primary key (' + this.formatter.columnize(args) + ')';
}
};
TableCompiler_SQLite3.prototype.foreignKeys = function() {
var sql = '';
var foreignKeys = _.where(this.grouped.alterTable || [], {method: 'foreign'});
for (var i = 0, l = foreignKeys.length; i < l; i++) {
var foreign = foreignKeys[i].args[0];
var column = this.formatter.columnize(foreign.column);
var references = this.formatter.columnize(foreign.references);
var foreignTable = this.formatter.wrap(foreign.inTable);
sql += ', foreign key(' + column + ') references ' + foreignTable + '(' + references + ')';
if (foreign.onDelete) sql += ' on delete ' + foreign.onDelete;
if (foreign.onUpdate) sql += ' on update ' + foreign.onUpdate;
}
return sql;
};
TableCompiler_SQLite3.prototype.createTableBlock = function() {
return this.getColumns().concat().join(',');
};
// Compile a rename column command... very complex in sqlite
TableCompiler_SQLite3.prototype.renameColumn = function(from, to) {
var compiler = this;
this.pushQuery({
sql: 'PRAGMA table_info(' + this.tableName() + ')',
output: function(pragma) {
return compiler.client.ddl(compiler, pragma, this.connection).renameColumn(from, to);
}
});
};
TableCompiler_SQLite3.prototype.dropColumn = function(column) {
var compiler = this;
this.pushQuery({
sql: 'PRAGMA table_info(' + this.tableName() + ')',
output: function(pragma) {
return compiler.client.ddl(compiler, pragma, this.connection).dropColumn(column);
}
});
};
module.exports = TableCompiler_SQLite3;