Class: ThinkingSphinx::PostgreSQLAdapter

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

Instance Method Summary collapse

Methods inherited from AbstractAdapter

detect, #initialize, #quote_with_table

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/postgresql_adapter.rb', line 46

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

#cast_to_datetime(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 31

def cast_to_datetime(clause)
  "cast(extract(epoch from #{clause}) as int)"
end

#cast_to_string(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 27

def cast_to_string(clause)
  clause
end

#cast_to_unsigned(clause) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 35

def cast_to_unsigned(clause)
  clause
end

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



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

def concatenate(clause, separator = ' ')
  clause.split(', ').collect { |field|
    case field
    when /COALESCE/, "'')"
      field
    else
      "COALESCE(CAST(#{field} as varchar), '')"
    end
  }.join(" || '#{separator}' || ")
end

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



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 39

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

#crc(clause, blank_to_null = false) ⇒ Object 



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

def crc(clause, blank_to_null = false)
  clause = "NULLIF(#{clause},'')" if blank_to_null
  "crc32(#{clause})"
end

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



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 23

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

#setup ⇒ Object 



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

def setup
  create_array_accum_function
  create_crc32_function
end

#sphinx_identifier ⇒ Object 



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

def sphinx_identifier
  "pgsql"
end

#time_difference(diff) ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 59

def time_difference(diff)
  "current_timestamp - interval '#{diff} seconds'"
end

#utf8_query_pre ⇒ Object 



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# File 'lib/thinking_sphinx/adapters/postgresql_adapter.rb', line 55

def utf8_query_pre
  nil
end