Class: FluentQuery::Drivers::Shared::Tokens::SQLToken

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent-query/drivers/shared/tokens/sql.rb

Overview

PostgreSQL query native token.

Constant Summary collapse

TRANSFORMER =

Holds token transformer.

/([A-Z])/

Instance Method Summary collapse

Constructor Details

#initialize(driver, query, subtokens) ⇒ SQLToken

Returns a new instance of SQLToken.



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# File 'lib/fluent-query/drivers/shared/tokens/sql.rb', line 44

def initialize(driver, query, subtokens)
    @_query = query
    @_driver = driver
    @_subtokens = subtokens
end

Instance Method Details

#render!(mode = :build) ⇒ Object 



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# File 'lib/fluent-query/drivers/shared/tokens/sql.rb', line 62

def render!(mode = :build)

    result = ""
    processor = @_query.processor

    # Transforms all subtokens to real string SQL tokens
    
    @_subtokens.each do |token|

        arguments = token.arguments
        name = token.name
        transformed = self._transform_token(name.to_s)
        operator = @_driver.operator_token? name
        
        if operator
            glue = transformed
        else
            glue = ","
        end

        first = arguments.first
        
        if first.array?
            arguments_result = processor.process_array(first, glue)
        elsif first.hash?
            arguments_result = processor.process_hash(first, glue)
        elsif first.symbol?
            arguments_result = processor.process_identifiers(arguments)
        else
            arguments_result = processor.process_formatted(arguments, mode)
        end
        
        result << transformed << " " << arguments_result << " "
    end

    return result
end