Class: ThinkingSphinx::SQLite3Adapter

Inherits:
AbstractAdapter show all
Defined in:
lib/thinking_sphinx/adapters/sqlite3_adapter.rb

Instance Method Summary collapse

Methods inherited from AbstractAdapter

detect, #initialize, #quote_with_table, #select_each

Constructor Details

This class inherits a constructor from ThinkingSphinx::AbstractAdapter

Instance Method Details

#boolean(value) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 38

def boolean(value)
  value ? "'t'" : "'f'"
end

#cast_to_datetime(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 24

def cast_to_datetime(clause)
  "STRFTIME('%s', #{clause})"
end

#cast_to_string(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 20

def cast_to_string(clause)
  "CAST(#{clause} AS TEXT)"
end

#cast_to_unsigned(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 28

def cast_to_unsigned(clause)
  "CAST(#{clause} AS INTEGER)"
end

#concatenate(clause, separator = ' ') ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 12

def concatenate(clause, separator = ' ')
  clause.split(', ').collect { |field| field }.join(" || '#{separator}' || ")
end

#convert_nulls(clause, default = '') ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 32

def convert_nulls(clause, default = '')
  return clause if default == ''
  default = "'#{default}'" if default.is_a?(String)
  "COALESCE(#{clause}, #{default})"
end

#crc(clause, blank_to_null = false) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 42

def crc(clause, blank_to_null = false)
  "CRC32(#{clause})"
end

#group_concatenate(clause, separator = ' ') ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 16

def group_concatenate(clause, separator = ' ')
  "GROUP_CONCAT(#{clause}, '#{separator}')"
end

#setup ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 3

def setup
  create_group_concat_function
  create_crc32
end

#sphinx_identifier ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 8

def sphinx_identifier
  "sqlite3"
end

#time_difference(diff) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 50

def time_difference(diff)
  "STRFTIME('%s','now') - STRFTIME('%s', #{diff})"
end

#utf8_query_pre ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/sqlite3_adapter.rb', line 46

def utf8_query_pre
  nil
end