Ejemplo n.º 1
0
        /// <summary>
        /// Check if the specified column is a [PrimaryKey].
        /// </summary>
        ///
        /// <param name="self">The Cassandra Fluent Migrator.</param>
        /// <param name="table">The Cassandra table name.</param>
        /// <param name="column">The Column to check.</param>
        /// <returns>True if Primary, False Otherwise.</returns>
        ///
        /// <exception cref="ApplicationException">Thrown when the Column is not a primary key.</exception>
        internal static bool IsPrimaryKey([NotNull] this ICassandraFluentMigrator self, [NotNull] string table, [NotNull] string column)
        {
            Check.NotNull(self, $"The argument [cassandra fluent migrator object]");
            Check.NotEmptyNotNull(table, $"The argument [table]");
            Check.NotEmptyNotNull(column, $"The argument [{nameof(column)}]");

            var session = self.GetCassandraSession();

            return(session
                   .Cluster
                   .Metadata
                   .GetTable(session.Keyspace, table.NormalizeString())
                   .PartitionKeys
                   .Any(x => x.Name.NormalizeString() == column.NormalizeString()));
        }
        private static async Task <ICassandraFluentMigrator> ExecuteUdtStatementAsync([NotNull] this ICassandraFluentMigrator self, [NotNull] string query, [NotNull] string errorMessage = "throw error")
        {
            try
            {
                IStatement statement = new SimpleStatement(query);
                await self
                .GetCassandraSession()
                .ExecuteAsync(statement);
            }
            catch (Exception ex)
            {
                // Return the error if the message is other than the column exists.
                if (!ex.Message.NormalizeString().Contains(errorMessage.NormalizeString()))
                {
                    throw ex;
                }
            }

            return(self);
        }
Ejemplo n.º 3
0
        /// <summary>
        /// Build and execute the Reanme column query statement.
        /// </summary>
        ///
        /// <param name="self">The Cassandra Fluent Migrator.</param>
        /// <param name="table">The Cassandra table name.</param>
        /// <param name="column">Old Column to be renamed.</param>
        /// <param name="target">New Column name.</param>
        /// <returns>Cassandra Fluent Migrator.</returns>
        ///
        /// <exception cref="NullReferenceException">Thrown when the arguments are empty or null.</exception>
        internal static async Task <ICassandraFluentMigrator> ExecuteRenameColumnQueryAsync([NotNull] this ICassandraFluentMigrator self, [NotNull] string table, [NotNull] string column, [NotNull] string target)
        {
            Check.NotNull(self, $"The argument [cassandra fluent migrator object]");
            Check.NotEmptyNotNull(table, $"The argument [table]");
            Check.NotEmptyNotNull(column, $"The argument [old name]");
            Check.NotEmptyNotNull(target, $"The argument [new name]");

            var query = TableCqlStatements.TABLE_RENAME_COLUMN_STATEMENT.NormalizeString(table, column, target);

            return(await self.ExecuteStatementAsync(query, AppErrorsMessages.COLUMN_EXISTS_FOR_RENAME.NormalizeString(column, target, self.GetCassandraSession().Keyspace)));
        }