Class: ThinkingSphinx::ActiveRecord::DatabaseAdapters::PostgreSQLAdapter

Inherits:
AbstractAdapter
  • Object
show all
Defined in:
lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb

Instance Method Summary collapse

Methods inherited from AbstractAdapter

#initialize, #quote, #quoted_table_name, #utf8_query_pre

Constructor Details

This class inherits a constructor from ThinkingSphinx::ActiveRecord::DatabaseAdapters::AbstractAdapter

Instance Method Details

#boolean_value(value) ⇒ Object 



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 6

def boolean_value(value)
  value ? 'TRUE' : 'FALSE'
end

#cast_to_bigint(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 10

def cast_to_bigint(clause)
  "#{clause}::bigint"
end

#cast_to_string(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 14

def cast_to_string(clause)
  "#{clause}::varchar"
end

#cast_to_timestamp(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 18

def cast_to_timestamp(clause)
  if ThinkingSphinx::Configuration.instance.settings['64bit_timestamps']
    "extract(epoch from #{clause})::bigint"
  else
    "extract(epoch from #{clause})::int"
  end
end

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



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 26

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

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



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 36

def convert_blank(clause, default = '')
  "COALESCE(NULLIF(#{clause}, ''), #{default})"
end

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



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 32

def convert_nulls(clause, default = '')
  "COALESCE(#{clause}, #{default})"
end

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



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 40

def group_concatenate(clause, separator = ' ')
  "array_to_string(array_agg(DISTINCT #{clause}), '#{separator}')"
end

#time_zone_query_pre ⇒ Object 



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# File 'lib/thinking_sphinx/active_record/database_adapters/postgresql_adapter.rb', line 44

def time_zone_query_pre
  ['SET TIME ZONE UTC']
end