abstract class DB::Statement

Overview

Represents a query in a Connection. It should be created by QueryMethods.

Note to implementors

  1. Subclass Statements
  2. Statements are created from a custom driver Connection#prepare method.
  3. #perform_query executes a query that is expected to return a ResultSet
  4. #perform_exec executes a query that is expected to return an ExecResult
  5. #do_close is called to release the statement resources.

Included Modules

Defined in:

db/statement.cr

Constructors

Instance Method Summary

Instance methods inherited from module DB::StatementMethods

exec(args : Array) : ExecResult
exec : ExecResult
exec(*args) : ExecResult exec, query(*args, &block)
query(args : Array) : ResultSet
query : ResultSet
query(*args) : ResultSet query, scalar(*args) scalar

Instance methods inherited from module DB::Disposable

close close, closed? closed?

Constructor Detail

def self.new(connection : Connection) #

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Instance Method Detail

def exec(args : Array) #

See QueryMethods#exec


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def exec #

See QueryMethods#exec


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def exec(*args) #

See QueryMethods#exec


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def query(args : Array) #

See QueryMethods#query


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def query #

See QueryMethods#query


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def query(*args) #

See QueryMethods#query


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def release_connection #

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