Initial commit

lib/assets/javascripts/builder/helpers/sql-utils.js

@@ -0,0 +1,74 @@
+/**
+ *  Checks properties from a SQL
+ */
+
+var TableNameUtils = require('./table-name-utils');
+
+module.exports = {
+  isSameQuery: function (originalQuery, customQuery) {
+    if (originalQuery == null || customQuery == null) { // eslint-disable-line
+      throw new Error('Needed parameters not provided');
+    }
+
+    var parseQuery = function (query) {
+      return query
+        .toLowerCase()
+        .replace(/\"/g, '') // Remove quoted things like "pepe".tableName
+        .replace(/;/g, '');
+    };
+
+    return parseQuery(originalQuery) === parseQuery(customQuery);
+  },
+
+  // return true if the sql query alters table schema in some way
+  altersSchema: function (sql) {
+    if (!sql) {
+      return false;
+    }
+
+    // Remove all line breaks in order to prevent
+    // search pattern problems
+    sql = this._removeLineBreaks(sql.trim());
+
+    return sql.search(/alter\s+[\w\."]+\s+/i) !== -1 ||
+      sql.search(/drop\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^vacuum\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^create\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^reindex\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^grant\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^revoke\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^cluster\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^comment\s+on\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^explain\s+[\w\.\"]+/i) !== -1;
+  },
+
+  // return true if the sql query alters table data
+  altersData: function (sql) {
+    if (!sql) {
+      return false;
+    }
+
+    // Remove all line breaks in order to prevent
+    // search pattern problems
+    sql = this._removeLineBreaks(sql.trim());
+
+    return this.altersSchema(sql) ||
+      sql.search(/^refresh\s+materialized\s+view\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/^truncate\s+[\w\.\"]+/i) !== -1 ||
+      sql.search(/insert\s+into/i) !== -1 ||
+      sql.search(/update\s+[\w\.\-"]+\s+.*set/i) !== -1 ||
+      sql.search(/delete\s+from/i) !== -1;
+  },
+
+  _removeLineBreaks: function (sql) {
+    return sql.replace(/\r?\n|\r/g, ' ');
+  },
+
+  getDefaultSQL: function (tableName, userName, inOrganization) {
+    return this.getDefaultSQLFromTableName(TableNameUtils.getQualifiedTableName(tableName, userName, inOrganization));
+  },
+
+  getDefaultSQLFromTableName: function (tableName) {
+    return 'SELECT * FROM ' + tableName;
+  }
+};