Class: SiSU_DbRemove::Remove

Inherits:
Object
  • Object
show all
Includes:
SiSU_DbAction
Defined in:
lib/sisu/db_remove.rb

Direct Known Subclasses

SiSU_DbDBI::Remove

Instance Method Summary collapse

Methods included from SiSU_DbAction

#create, #createdb, #db_action, #drop, #import, #update

Constructor Details

#initialize(opt, conn, file, sql_type) ⇒ Remove

Returns a new instance of Remove.



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# File 'lib/sisu/db_remove.rb', line 58

def initialize(opt,conn,file,sql_type)
  @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
  @md=SiSU_Param::Parameters.new(@opt).get
  @fnb=@md.fnb
  @db=SiSU_Env::InfoDb.new
end

Instance Method Details

#remove ⇒ Object 



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# File 'lib/sisu/db_remove.rb', line 64

def remove
  driver_sqlite3=if @sql_type==:sqlite
    (@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
    ? true
    : false
  end
  del_id=if driver_sqlite3
    begin
      remove_selected=%{
        SELECT tid
        FROM metadata_and_text
        WHERE src_filename = '#{@md.fns}'
        AND metadata_and_text.language_document_char = '#{@opt.lng}'
      ;} # note, for .ssm: @md.fns (is set during runtime & is) != @opt.fns @md.opt.fns
      @conn.get_first_value(remove_selected).to_i
    rescue SQLite3::Exception => e
      #not tested
      puts "Exception occurred"
      SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).mark(e.inspect)
      SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:yellow).mark(
        "\n" \
        + 'Attempting to initialize db' + "\n" \
        + 'Creating db tables'
      )
      sdb={
        create: SiSU_DbDBI::Create.new(@opt,@conn,@file_maint,@sql_type),
        index: SiSU_DbDBI::Index.new(@opt,@conn,@file_maint,@sql_type),
      }
      db_action(sdb).create
    end
  else
    begin
      remove_selected=%{
        SELECT metadata_and_text.tid
        FROM metadata_and_text
        WHERE metadata_and_text.src_filename = '#{@md.fns}'
        AND metadata_and_text.language_document_char = '#{@opt.lng}'
      ;} # note, for .ssm: @md.fns (is set during runtime & is) != @opt.fns @md.opt.fns
      x=@conn.exec(remove_selected)
      x.field_values("tid")[0]
    rescue PG::Error => e
      err=[
        e.result.error_field( PG::Result::PG_DIAG_SEVERITY ),
        e.result.error_field( PG::Result::PG_DIAG_SQLSTATE ),
        e.result.error_field( PG::Result::PG_DIAG_MESSAGE_PRIMARY ),
        e.result.error_field( PG::Result::PG_DIAG_MESSAGE_DETAIL ),
        e.result.error_field( PG::Result::PG_DIAG_MESSAGE_HINT ),
        e.result.error_field( PG::Result::PG_DIAG_STATEMENT_POSITION ),
        e.result.error_field( PG::Result::PG_DIAG_INTERNAL_POSITION ),
        e.result.error_field( PG::Result::PG_DIAG_INTERNAL_QUERY ),
        e.result.error_field( PG::Result::PG_DIAG_CONTEXT ),
        e.result.error_field( PG::Result::PG_DIAG_SOURCE_FILE ),
        e.result.error_field( PG::Result::PG_DIAG_SOURCE_LINE ),
        e.result.error_field( PG::Result::PG_DIAG_SOURCE_FUNCTION ),
      ]
      SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:fuchsia).mark("\n" + err.inspect)
      if err[2] =~/relation "\S+?" does not exist/ \
      or err.inspect =~/relation "\S+?" does not exist/
        SiSU_Utils::CodeMarker.new(__LINE__,__FILE__,:yellow).mark(
          "\n" \
          + err[2] + "\n" \
          + 'Attempting to initialize db' + "\n" \
          + 'Creating db tables'
        )
        sdb={
          create: SiSU_DbDBI::Create.new(@opt,@conn,@file_maint,@sql_type),
          index: SiSU_DbDBI::Index.new(@opt,@conn,@file_maint,@sql_type),
        }
        db_action(sdb).create
      end
    end
  end
  if del_id
    sql_entry=[
      "DELETE FROM endnotes WHERE metadata_tid = '#{del_id}';",
      "DELETE FROM endnotes_asterisk WHERE metadata_tid = '#{del_id}';",
      "DELETE FROM endnotes_plus WHERE metadata_tid = '#{del_id}';",
      "DELETE FROM doc_objects WHERE metadata_tid = '#{del_id}';",
      "DELETE FROM urls WHERE metadata_tid = '#{del_id}';",
      "DELETE FROM metadata_and_text WHERE metadata_and_text.tid = '#{del_id}';",
    ]
    if driver_sqlite3
      @conn.transaction
      sql_entry.each do |s|
        begin
          @conn.execute(s)
        rescue
          next
        end
      end
      @conn.commit if driver_sqlite3
    else
      sql_entry.each do |s|
        begin
          @conn.exec_params(s)
        rescue
          next
        end
      end
    end
    if @opt.act[:maintenance][:set]==:on
      @file.puts sql_entry
    end
  else
    if (@opt.act[:verbose][:set]==:on \
    || @opt.act[:verbose_plus][:set]==:on \
    || @opt.act[:maintenance][:set]==:on)
      SiSU_Screen::Ansi.new(
        @opt.selections.str,
        "no such file in database #{@db.psql.db}::#{@opt.fns}"
      ).puts_grey
    end
  end
end