Class: Sage::DatabaseSchemaContext

Inherits:
Object
  • Object
show all
Defined in:
lib/sage/database_schema_context.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data_source_name = "main") ⇒ DatabaseSchemaContext

Returns a new instance of DatabaseSchemaContext.



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# File 'lib/sage/database_schema_context.rb', line 3

def initialize(data_source_name = "main")
  @data_source_name = data_source_name
end

Class Method Details

.call(data_source_name = "main") ⇒ Object 



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# File 'lib/sage/database_schema_context.rb', line 7

def self.call(data_source_name = "main")
  new(data_source_name).build_context
end

Instance Method Details

#build_context ⇒ Object 



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# File 'lib/sage/database_schema_context.rb', line 11

def build_context
  context_parts = []
  context_parts << "\n\n## DATABASE SCHEMA\n"
  context_parts << "Available tables and their columns (use these exact names in your queries):\n"

  begin
    data_source = Blazer.data_sources[@data_source_name]
    if data_source && data_source.respond_to?(:schema)
      schema_info = data_source.schema

      # Format the schema array into readable text
      if schema_info.is_a?(Array)
        schema_info.each do |table_info|
          next unless table_info.is_a?(Hash)

          schema_name = table_info[:schema] || "public"
          table_name = table_info[:table]
          columns = table_info[:columns] || []

          context_parts << "\n### Table: `#{schema_name}.#{table_name}`"
          context_parts << "Columns:"

          columns.each do |column|
            if column.is_a?(Hash)
              col_name = column[:name]
              data_type = column[:data_type]
              context_parts << "  - `#{col_name}` (#{data_type})"
            end
          end
        end
      else
        # Fallback to original behavior if schema is not in expected format
        context_parts << "```"
        context_parts << schema_info.to_s
        context_parts << "```"
      end
    end
  rescue => e
    Rails.logger.warn "Could not load database schema: #{e.message}"
    return nil
  end

  context_parts.join("\n")
end