Java SE のサンプル: データベースのスキーマ情報の表示

このサンプルは、Ultra Light J データベースのシステムテーブルをナビゲーションしてスキーマ情報を確認する方法を示しています。テーブルの各ローのデータも表示されます。

♦ DumpSchema.java サンプルの実行

%SQLANYSAMP12%\UltraLiteJ\J2SE ディレクトリに移動します。
CreateSales サンプルを実行します。
rundemo CreateSales
次のコマンドを実行します (コマンドでは大文字と小文字が区別されます)。
rundemo DumpSchema

次に、アプリケーションの出力の一部を示します。

Metadata options:

Option[ date_format ] = 'YYYY-MM-DD'
Option[ date_order ] = 'YMD'
Option[ global_database_id ] = '0'
Option[ nearest_century ] = '50'
Option[ precision ] = '30'
Option[ scale ] = '6'
Option[ time_format ] = 'HH:NN:SS.SSS'
Option[ timestamp_format ] = 'YYYY-MM-DD HH:NN:SS.SSS'
Option[ timestamp_increment ] = '1'

Metadata tables:

Table[0] name = "systable"  id = 0 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "table_name" flags = 0x0 domain = VARCHAR(128)
  column[2 ]: name = "table_flags" flags = 0x0 domain = UNSIGNED-SHORT
  column[3 ]: name = "table_data" flags = 0x0 domain = INTEGER
  column[4 ]: name = "table_autoinc" flags = 0x0 domain = BIG
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD

Table[1] name = "syscolumn"  id = 1 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "column_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[2 ]: name = "column_name" flags = 0x0 domain = VARCHAR(128)
  column[3 ]: name = "column_flags" flags = 0x0 domain = TINY
  column[4 ]: name = "column_domain" flags = 0x0 domain = TINY
  column[5 ]: name = "column_length" flags = 0x0 domain = INTEGER
  column[6 ]: name = "column_default" flags = 0x0 domain = TINY
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD
    key[1 ]: name = "column_id" flags = 0x1,FORWARD

Table[2] name = "sysindex"  id = 2 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "index_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[2 ]: name = "index_name" flags = 0x0 domain = VARCHAR(128)
  column[3 ]: name = "index_flags" flags = 0x0 domain = TINY
  column[4 ]: name = "index_data" flags = 0x0 domain = INTEGER
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD
    key[1 ]: name = "index_id" flags = 0x1,FORWARD

Table[3] name = "sysindexcolumn"  id = 3 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "index_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[2 ]: name = "order" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[3 ]: name = "column_id" flags = 0x0 domain = INTEGER
  column[4 ]: name = "index_column_flags" flags = 0x0 domain = TINY
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD
    key[1 ]: name = "index_id" flags = 0x1,FORWARD
    key[2 ]: name = "order" flags = 0x1,FORWARD

Table[4] name = "sysinternal"  id = 4 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "name" flags = 0x1,IN-PRIMARY-INDEX domain = VARCHAR(128)
  column[1 ]: name = "value" flags = 0x0 domain = VARCHAR(128)
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "name" flags = 0x1,FORWARD

Table[5] name = "syspublications"  id = 5 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "publication_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "publication_name" flags = 0x0 domain = VARCHAR(128)
  column[2 ]: name = "download_timestamp" flags = 0x0 domain = TIMESTAMP
  column[3 ]: name = "last_sync_sent" flags = 0x0 domain = INTEGER
  column[4 ]: name = "last_sync_confirmed" flags = 0x0 domain = INTEGER
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "publication_id" flags = 0x1,FORWARD

Table[6] name = "sysarticles"  id = 6 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "publication_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "publication_id" flags = 0x1,FORWARD
    key[1 ]: name = "table_id" flags = 0x1,FORWARD

Table[7] name = "sysforeignkey"  id = 7 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "foreign_table_id" flags = 0x0 domain = INTEGER
  column[2 ]: name = "foreign_key_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[3 ]: name = "name" flags = 0x0 domain = VARCHAR(128)
  column[4 ]: name = "index_name" flags = 0x0 domain = VARCHAR(128)
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD
    key[1 ]: name = "foreign_key_id" flags = 0x1,FORWARD

Table[8] name = "sysfkcol"  id = 8 flags = 0xc000,SYSTEM,NO_SYNC
  column[0 ]: name = "table_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[1 ]: name = "foreign_key_id" flags = 0x1,IN-PRIMARY-INDEX domain = INTEGER
  column[2 ]: name = "item_no" flags = 0x1,IN-PRIMARY-INDEX domain = SHORT
  column[3 ]: name = "column_id" flags = 0x0 domain = INTEGER
  column[4 ]: name = "foreign_column_id" flags = 0x0 domain = INTEGER
  index[0 ]: name = "primary" flags = 0xf,UNIQUE-KEY,UNIQUE-INDEX,PERSISTENT,PRIMARY-INDEX
    key[0 ]: name = "table_id" flags = 0x1,FORWARD
    key[1 ]: name = "foreign_key_id" flags = 0x1,FORWARD
    key[2 ]: name = "item_no" flags = 0x1,FORWARD

参照

DocCommentXchange で意見交換できます