Examples of cascading.lingual.catalog.SchemaCatalog

cascading.lingual.catalog.SchemaCatalog
SchemaCatalog defines the CRUD like behaviors for interacting with a collection of schemas, tables, and supporting types.

    }


  @Override
  protected Collection<String> performGetNames( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();
    String schemaName = getOptions().getSchemaName();


    getSchemaDefChecked( catalog, schemaName, true );


    return catalog.getTableNames( schemaName );
    }

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    }


  @Override
  protected Map performShow( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();
    String schemaName = getOptions().getSchemaName();
    String tableName = getOptions().getTableName();


    SchemaDef schemaDef = getSchemaDefChecked( catalog, schemaName, true );
    TableDef tableDef = schemaDef.getTableChecked( tableName );

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    getCatalogService().commitCatalog( getCatalogManager().getSchemaCatalog() );
    }


  protected SchemaCatalogManager loadCatalogManager()
    {
    SchemaCatalog catalog = getCatalogService().openSchemaCatalog();


    boolean performInit = catalog == null;


    if( catalog == null )
      catalog = getCatalogService().createSchemaCatalog( getDefaultProtocol(), getDefaultFormat() );


    SchemaCatalogManager catalogManager = new SchemaCatalogManager( catalog );


    catalogManager.setPlatformBroker( this );


    if( performInit )
      catalogManager.initializeNew(); // initialize defaults for a new catalog and root schema


    if( !getName().equals( catalog.getPlatformName() ) )
      throw new IllegalStateException( "catalog was initialized for: " + catalog.getPlatformName() + ", current running on platform: " + getName() );


    // schema and tables beyond here are not persisted in the catalog
    // they are transient to the session
    // todo: wrap transient catalog data around persistent catalog data
    if( getProperties().containsKey( SCHEMAS_PROP ) )

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    initCatalog();


    catalog( "--schema", DDL_TEST_SCHEMA, "--add", getSchemaPath( DDL_TEST_SCHEMA ) );


    SchemaCatalog catalog = getSchemaCatalog();
    SchemaCatalogManager schemaCatalogManager = platformBroker.getCatalogManager();


    Protocol defaultProtocol = catalog.getSchemaDef( DDL_TEST_SCHEMA ).findDefaultProtocol();


    DDLParser parser = new DDLParser( schemaCatalogManager, DDL_TEST_SCHEMA, defaultProtocol.toString(), "csv" );


    File testFile = new File( DDL_FILE );


    assertTrue( "test file " + testFile + "not found in " + new File( "" ).getAbsolutePath(), testFile.exists() );


    parser.apply( new File( DDL_FILE ) );


    Set<String> tables = new HashSet<String>( catalog.getTableNames( DDL_TEST_SCHEMA ) );


    assertTrue( Sets.difference( tables, expectedTables ).size() == 0 );


    String jsonFirst = writeObject( catalog );

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  protected void addTable( String schemaName, String tableName, String identifier, Fields fields, String protocolName, String formatName ) throws Exception
    {
    LingualConnection connection = (LingualConnection) getConnection();


    SchemaCatalogManager catalogManager = connection.getPlatformBroker().getCatalogManager();
    SchemaCatalog schemaCatalog = catalogManager.getSchemaCatalog();


    if( !schemaCatalog.schemaExists( schemaName ) )
      schemaCatalog.addSchemaDef( schemaName, Protocol.getProtocol( protocolName ), Format.getFormat( formatName ), null );


    catalogManager.createTableDefFor( schemaName, tableName, identifier, fields, protocolName, formatName );


    catalogManager.addSchemasTo( connection );
    }

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    }


  @Override
  protected boolean performRename( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();


    return catalog.renameRepository( getOptions().getRepoName(), getOptions().getRenameName() );
    }

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    }


  @Override
  protected boolean performRemove( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();
    String repoName = getOptions().getRepoName();


    catalog.removeRepository( repoName );


    return true;
    }

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    }


  @Override
  protected Map performShow( PlatformBroker platformBroker )
    {
    SchemaCatalog catalog = platformBroker.getSchemeCatalog();
    String repoName = getOptions().getRepoName();
    Repo repo = catalog.getRepository( repoName );


    if( repo == null )
      return null;


    return new RepoBuilder().format( repo );

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    }


  private TableDef createTableFor( SchemaCatalogManager catalogManager, Ref head, String identifier )
    {
    String stereotypeName = head.name;
    SchemaCatalog schemaCatalog = catalogManager.getSchemaCatalog();
    Stereotype stereotype = schemaCatalog.getStereoTypeFor( null, head.fields );


    if( stereotype != null )
      stereotypeName = stereotype.getName();
    else
      schemaCatalog.createStereotype( null, stereotypeName, head.fields );


    Protocol protocol = schemaCatalog.getDefaultProtocol();
    Format format = schemaCatalog.getDefaultFormat();


    String tableName = catalogManager.createTableDefFor( null, head.name, identifier, stereotypeName, protocol, format );


    return schemaCatalog.getTableDef( null, tableName );
    }

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Related Classes of cascading.lingual.catalog.SchemaCatalog

cascading.lingual.catalog.ddl.DDLParserPlatformTest

cascading.lingual.catalog.target.DDLTarget

cascading.lingual.catalog.target.FormatTarget

cascading.lingual.catalog.target.ProtocolTarget

cascading.lingual.catalog.target.ProviderTarget

cascading.lingual.catalog.target.RepoTarget

cascading.lingual.catalog.target.SchemaTarget

cascading.lingual.catalog.target.StereotypeTarget

cascading.lingual.catalog.target.TableTarget

cascading.lingual.jdbc.JDBCPlatformTestCase

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