waterline-postgresql
Version:
PostgreSQL Adapter for Sails and Waterline
65 lines (52 loc) • 2.29 kB
JavaScript
// Oracle Schema Compiler
// -------
var inherits = require('inherits');
var SchemaCompiler = require('../../../schema/compiler');
var utils = require('../utils');
function SchemaCompiler_Oracle() {
SchemaCompiler.apply(this, arguments);
}
inherits(SchemaCompiler_Oracle, SchemaCompiler);
// Rename a table on the schema.
SchemaCompiler_Oracle.prototype.renameTable = function(tableName, to) {
this.pushQuery('rename ' + this.formatter.wrap(tableName) + ' to ' + this.formatter.wrap(to));
};
// Check whether a table exists on the query.
SchemaCompiler_Oracle.prototype.hasTable = function(tableName) {
this.pushQuery({
sql: 'select TABLE_NAME from USER_TABLES where TABLE_NAME = ' +
this.formatter.parameter(tableName),
output: function(resp) {
return resp.length > 0;
}
});
};
// Check whether a column exists on the schema.
SchemaCompiler_Oracle.prototype.hasColumn = function(tableName, column) {
this.pushQuery({
sql: 'select COLUMN_NAME from USER_TAB_COLUMNS where TABLE_NAME = ' + this.formatter.parameter(tableName) +
' and COLUMN_NAME = ' + this.formatter.parameter(column),
output: function(resp) {
return resp.length > 0;
}
});
};
SchemaCompiler_Oracle.prototype.dropSequenceIfExists = function (sequenceName) {
this.pushQuery(utils.wrapSqlWithCatch("drop sequence " + this.formatter.wrap(sequenceName), -2289));
};
SchemaCompiler_Oracle.prototype._dropRelatedSequenceIfExists = function (tableName) {
// removing the sequence that was possibly generated by increments() column
var sequenceName = utils.generateCombinedName('seq', tableName);
this.dropSequenceIfExists(sequenceName);
};
SchemaCompiler_Oracle.prototype.dropTable = function (tableName) {
this.pushQuery('drop table ' + this.formatter.wrap(tableName));
// removing the sequence that was possibly generated by increments() column
this._dropRelatedSequenceIfExists(tableName);
};
SchemaCompiler_Oracle.prototype.dropTableIfExists = function(tableName) {
this.pushQuery(utils.wrapSqlWithCatch("drop table " + this.formatter.wrap(tableName), -942));
// removing the sequence that was possibly generated by increments() column
this._dropRelatedSequenceIfExists(tableName);
};
module.exports = SchemaCompiler_Oracle;