chapter 7  relational database persistence with record and squeryl

... you query the database, you get the user ID of the last user to make a change and the time the change was made When you update the database with that data, you use that user ID and timestamp ... not match any rows in the database and will thus throw an exception 9.4 Searches Not only does the persistence delegate support the basic database inserts, updates, and deletes, but it also supports ... getLastUpdateID( ) and getLastUpdateTime( ) methods in the Persistent interface earlier in the chapter and wondered what their purpose was They specifically enable you to work with a database in optimistic...

Ngày tải lên: 12/08/2014, 16:21

... you query the database, you get the user ID of the last user to make a change and the time the change was made When you update the database with that data, you use that user ID and timestamp ... not match any rows in the database and will thus throw an exception 9.4 Searches Not only does the persistence delegate support the basic database inserts, updates, and deletes, but it also supports ... getLastUpdateID( ) and getLastUpdateTime( ) methods in the Persistent interface earlier in the chapter and wondered what their purpose was They specifically enable you to work with a database in optimistic...

Ngày tải lên: 12/08/2014, 21:20

... that is represented as methods and properties, and event-handling capabilities Bindings can be anything from small widget objects to large, complex blocks of code with extensive functionality Figure ... reusable, and generally have no dependencies outside of the binding itself Although XUL is used most often as content in an XBL binding, XBL can also bind to and from HTML and XML If you have worked with ... are files saved with an xml filename extension Most bindings implement XUL content and behavior with script, so XBL files reside in your XUL application's chrome content area and have full access...

Ngày tải lên: 14/12/2013, 12:15

... onmousedown, and provide a means for trapping them within your binding and carrying out tasks associated with them this.input.focus( ); ... tag, and each method can have or more parameters, which gather the values passed into the method when called 7.2.4 Handlers Handlers in XBL mimic regular document events like onclick and onmousedown, ... usually provide a binding object with a specific function like copying and saving some data or showing and hiding widget controls Like properties, they can be called from within the binding, from another...

Ngày tải lên: 14/12/2013, 12:15

... document level, and some is at the binding level With content in different scopes, there are limits to which standard DOM methods can be used to access other elements and objects in and above a binding ... interaction with the DOM, such as scope characteristics and insertion points 7.4.1 The XBL DOM Interfaces XBL has two core DOM interfaces, DocumentXBL and ElementXBL These extensions to the Document and ... methods can be accessed and used from JavaScript Here is a list of these interface methods 7.4.1.1 DocumentXBL methods The DocumentXBL interface gains access to and interacts with an XBL document...

Ngày tải lên: 14/12/2013, 12:15

... the handler tags, like you can with the XUL element If you use this "embedded" syntax, wrap your script in a CDATA section so it gets interpreted and executed properly:

Ngày tải lên: 14/12/2013, 12:15

... replace "username" and "password" with your username and password In line you must replace "dbname" with the name of your MySQL database In line 13 you must replace "tablename" with the name of ... SQL commands at the MySQL database You can put any SQL commands after the function The SQL commands must be enclosed in parentheses and quotations Here's a weird thing: MySQL lines end with a ... SELECT and INSERT will work with or without the extra semi-colon, but UPDATE won't work SELECT and INSERT are the first MySQL functions you use, so you're happily coding with both semi-colons, and...

Ngày tải lên: 17/01/2014, 06:20

... are defined as τ qo ′ τ qo ′′ τq ′ τq ′′ ′ and τ ′′ and τ τd and ′ ′′ and τ d are are are are the q- and d-axis the q- and d-axis the q- and d-axis the q- and d-axis transient open-circuit time constants ... IMPEDANCES AND G(p) FOR A SYNCHRONOUS MACHINE WITH FOUR ROTOR WINDINGS In Chapter 5, the synchronous machine was represented with a field winding and one damper winding in the d-axis and with two ... Standard Dictionary of Electrical and Electronic Terms, 2nd ed., John Wiley and Sons, New York, 1978 [6] B Adkins and R.G Harley, The General Theory of Alternating Current Machines, Chapman and...

Ngày tải lên: 16/02/2014, 18:47

... SELECT title FROM albums, WHERE band_id IN (SELECT bands.band_id FROM bands, band_musician WHERE band_musician.musician_id = AND bands.band_id = band_musician.band_id) 2.2.7 Transaction Logic ... Development The Database Database Programming with Java 10 12 14 Chapter Relational Databases and SQL What Is a Relational Database? 16 16 Databases and Database Engines ... form of a search for all alternative bands: SELECT bands.band_name FROM bands, albums WHERE albums.category = 'alternative' AND bands.band_id = albums.band_id The newest thing you will notice...

Ngày tải lên: 25/03/2014, 10:41

Ngày tải lên: 05/05/2014, 14:08

... SELECT title FROM albums, WHERE band_id IN (SELECT bands.band_id FROM bands, band_musician WHERE band_musician.musician_id = AND bands.band_id = band_musician.band_id) 2.2.7 Transaction Logic ... Development The Database Database Programming with Java 10 12 14 Chapter Relational Databases and SQL What Is a Relational Database? 16 16 Databases and Database Engines ... form of a search for all alternative bands: SELECT bands.band_name FROM bands, albums WHERE albums.category = 'alternative' AND bands.band_id = albums.band_id The newest thing you will notice...

Ngày tải lên: 27/06/2014, 11:20

... Server, Sybase, and legacy systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access ... for some database engines Scrollable result sets, on the other hand, are common in database vendor APIs, and the database vendors thus believed they should be present in JDBC page 38 JDBC and Java ... create support tables for mSQL, MySQL, and Oracle Once your database engine is installed and your database is all set up, you will need a JDBC driver for that database engine You can find an mSQL-JDBC...

Ngày tải lên: 12/08/2014, 16:21

... the RowSet The password and username attributes specify the username and password to use for the database connection Finally, the command attribute specifies what command to send to the data ... systems programming and thus works in a new way with relational databases This section introduces an architecture on which you can base object-oriented database applications and walks through an ... the database and performs a SELECT and returns the PK if it is in the database public CustomerKey ejbFindBySocialSecurityNumber(String ssn) throws FinderException { // this method goes to the database...

Ngày tải lên: 12/08/2014, 16:21

... hand, I have used it for business page 112 JDBC and Java 2nd edition transactions such as deposits, withdrawals, account creation, etc On the other hand, I have used it in terms of database and ... business logic just calls a store() method and allows a persistence- specific class to handle how that saving is implemented page 109 JDBC and Java 2nd edition The persistence pattern defines an interface ... of the database table, and the rows in the GUI table match those in the database table The model is the database The view is the GUI table The controller is a less obvious object that handles...

Ngày tải lên: 12/08/2014, 16:21

... needs to be recorded in a data store that can survive computer shutdowns and crashes The most common persistence tool is by far the relational database and for Java, that means JDBC 9.1 Database ... the PersistenceSupport and Transaction interfaces as the places where data store-specific persistence operations should occur To create a database persistence library, you thus need to create database- specific ... technologies with their own authentication and validation mechanisms You might, for example, have EJB component authentication and validation in the middle tier, but also have database authentication and...

Ngày tải lên: 12/08/2014, 16:21

... and life into potentially dry subjects Ann Schirmer was the copyeditor and interior compositor for Database Programming with JDBC and Java, Second Edition Catherine Morris, Claire Cloutier, and ... bindings getCommand( ) and setCommand( ) public String getCommand( ); public void setCommand(String sql) throws java.sql.SQLException; Description These methods manage the SQL command used by this ... of Database Programming with JDBC and Java, Second Edition is from the CMCD PhotoCD Collection The cover image was manipulated by Edie Freedman using Adobe Photoshop 3.0 and page 249 JDBC and...

Ngày tải lên: 12/08/2014, 16:21

... SELECT title FROM albums, WHERE band_id IN (SELECT bands.band_id FROM bands, band_musician WHERE band_musician.musician_id = AND bands.band_id = band_musician.band_id) 2.2.7 Transaction Logic ... Development The Database Database Programming with Java 10 12 14 Chapter Relational Databases and SQL What Is a Relational Database? 16 16 Databases and Database Engines ... form of a search for all alternative bands: SELECT bands.band_name FROM bands, albums WHERE albums.category = 'alternative' AND bands.band_id = albums.band_id The newest thing you will notice...

Ngày tải lên: 12/08/2014, 21:20

... Server, Sybase, and legacy systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access ... for some database engines Scrollable result sets, on the other hand, are common in database vendor APIs, and the database vendors thus believed they should be present in JDBC page 38 JDBC and Java ... create support tables for mSQL, MySQL, and Oracle Once your database engine is installed and your database is all set up, you will need a JDBC driver for that database engine You can find an mSQL-JDBC...

Ngày tải lên: 12/08/2014, 21:20

... the statements to the database Communication with the database occurs in one huge burst; the huge bottleneck of stop and go communication with the database is gone Statement and its children all ... done with all accounts If you so, you will fill up the transaction log used by the database to manage its transactions and bog down database performance You should therefore turn autocommit off and ... the database with no joins and fetch all the primary keys of the rows to be changed, inserts require that the result set has fetched— for each matching row—all non-null columns and all columns without...

Ngày tải lên: 12/08/2014, 21:20

... the RowSet The password and username attributes specify the username and password to use for the database connection Finally, the command attribute specifies what command to send to the data ... systems programming and thus works in a new way with relational databases This section introduces an architecture on which you can base object-oriented database applications and walks through an ... the database and performs a SELECT and returns the PK if it is in the database public CustomerKey ejbFindBySocialSecurityNumber(String ssn) throws FinderException { // this method goes to the database...

Ngày tải lên: 12/08/2014, 21:20