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84 lines
2.6 KiB
JavaScript
84 lines
2.6 KiB
JavaScript
'use strict';
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// Oracle Schema Builder & Compiler
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// -------
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module.exports = function(client) {
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var inherits = require('inherits');
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var Schema = require('../../../schema');
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var utils = require('../utils');
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// Schema Builder
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// -------
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function SchemaBuilder_Oracle() {
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this.client = client;
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Schema.Builder.apply(this, arguments);
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}
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inherits(SchemaBuilder_Oracle, Schema.Builder);
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// Schema Compiler
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// -------
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function SchemaCompiler_Oracle() {
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this.client = client;
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this.Formatter = client.Formatter;
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Schema.Compiler.apply(this, arguments);
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}
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inherits(SchemaCompiler_Oracle, Schema.Compiler);
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// Rename a table on the schema.
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SchemaCompiler_Oracle.prototype.renameTable = function(tableName, to) {
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this.pushQuery('rename ' + this.formatter.wrap(tableName) + ' to ' + this.formatter.wrap(to));
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};
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// Check whether a table exists on the query.
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SchemaCompiler_Oracle.prototype.hasTable = function(tableName) {
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this.pushQuery({
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sql: 'select TABLE_NAME from USER_TABLES where TABLE_NAME = ' +
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this.formatter.parameter(tableName),
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output: function(resp) {
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return resp.length > 0;
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}
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});
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};
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// Check whether a column exists on the schema.
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SchemaCompiler_Oracle.prototype.hasColumn = function(tableName, column) {
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this.pushQuery({
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sql: 'select COLUMN_NAME from USER_TAB_COLUMNS where TABLE_NAME = ' + this.formatter.parameter(tableName) +
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' and COLUMN_NAME = ' + this.formatter.parameter(column),
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output: function(resp) {
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return resp.length > 0;
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}
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});
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};
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SchemaCompiler_Oracle.prototype.dropSequenceIfExists = function (sequenceName) {
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this.pushQuery(utils.wrapSqlWithCatch("drop sequence " + this.formatter.wrap(sequenceName), -2289));
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};
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SchemaCompiler_Oracle.prototype._dropRelatedSequenceIfExists = function (tableName) {
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// removing the sequence that was possibly generated by increments() column
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var sequenceName = utils.generateCombinedName('seq', tableName);
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this.dropSequenceIfExists(sequenceName);
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};
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SchemaCompiler_Oracle.prototype.dropTable = function (tableName) {
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this.pushQuery('drop table ' + this.formatter.wrap(tableName));
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// removing the sequence that was possibly generated by increments() column
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this._dropRelatedSequenceIfExists(tableName);
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};
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SchemaCompiler_Oracle.prototype.dropTableIfExists = function(tableName) {
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this.pushQuery(utils.wrapSqlWithCatch("drop table " + this.formatter.wrap(tableName), -942));
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// removing the sequence that was possibly generated by increments() column
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this._dropRelatedSequenceIfExists(tableName);
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};
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client.SchemaBuilder = SchemaBuilder_Oracle;
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client.SchemaCompiler = SchemaCompiler_Oracle;
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}; |