/// <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);
}
/// <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)));
}
