Go

Go is a framework for customizing componens using XML. Go is used in the following mlw projects:

Factory uses Go to load Objects into the factory.

DAOFactory extends Factory.

FBall uses Go to provide a customizable framwork for laying out the panels on the swing application. All the queries are stored in an XML file. All the layout of the tabs are defined in an XML file. Using Go in this application makes adding new tabs to the application very easy. A new tab can be added without change any java code. Simply a new component entry in the manager.xml (download) file will accomplish adding a tab.

Supported action include:

com.mlw.go.AddActionAction.java (download) is the Action class that can load custom classes that implement Action (download) . This is usefull if an application needs to implement its own Action class.

<?xml version="1.0" encoding="UTF-8" ?> <go> <action class="com.some.MyNewAction" /> </go>

com.mlw.go.CopyAction.java (download) is the Action class that retrieves file with the http protcal.

<?xml version="1.0" encoding="UTF-8" ?> <go> <copy from = "http://sports.yahoo.com/nbastats/regular_season.txt" to = "/temp/regular_season.txt" /> </go>

com.mlw.go.ConstantsAction.java (download) is the Action class that allows constants or replace values to bu used in the XML file.

<?xml version="1.0" encoding="UTF-8" ?> <go> <constant key="to-file" >"/temp/regular_season.txt"</constant> <constants from-file = "http://sports.yahoo.com/nbastats/regular_season.txt" some-other-constant = "Some Other Value /> <copy from="${file}" to="${to-file}" /> </go>

com.mlw.go.IncludeAction.java (download) is the Action class that is used to include more xml config files.

<?xml version="1.0" encoding="UTF-8" ?> <go> <include file="/my-config.xml" /> </go>

com.mlw.go.MainAction.java (download) is the Action class that uses reflection to invake a class with the main(String[] args) method

<?xml version="1.0" encoding="UTF-8" ?> <go> <java class="com.some.MainClass" /> </go>

com.mlw.go.ReflectionAction.java (download) is the Action class that instanciates objects and calls methos on the object. This Action is used in the Factory. The below sample is creates a com.mlw.util.factory.TestFactoryObject (download) , then calls setSampleValue('Some Value');

<?xml version="1.0" encoding="UTF-8" ?> <go> <object class="com.mlw.util.factory.TestFactoryObject" name="TestFactoryObject01"> <set name="SampleValue">Some Value</set> </object> </go>

com.mlw.go.SpoolAction.java (download) is the Action class that can be used to capture the output of other Action classes.

com.mlw.go.WaitAction.java (download) is the Action class that is used for haulting the parsing of the config file till this Action class is notifed.

com.mlw.go.ext.JDBCAction.java (download) is the Action class that opens a JDBC connection and executes SQL scripts. The sample below opens a connection to an Access database, then deletes from the stats table.

<?xml version="1.0" encoding="UTF-8" ?> <go> <jdbc name="conn" driver="sun.jdbc.odbc.JdbcOdbcDriver" url="jdbc:odbc:fball-nba-2002" exception="throw"> <sql exception="throw">DELETE FROM stats</sql> </jdbc> </go>

com.mlw.go.ext.LoaderAction.java (download) is the Action class that laods CSV file int a database. This is used in the FBall applicatoin to update the database with a click of a button. Simular to the sqlldr utility on Oracle.

<?xml version="1.0" encoding="UTF-8" ?> <go> <jdbc name="conn" exception="throw" driver="sun.jdbc.odbc.JdbcOdbcDriver" url="jdbc:odbc:fball-nba-2002" > <sql exception="throw">DELETE FROM stats</sql> <loader type="insert" delim="," ignore="2" table="stats" input="/temp/regular_season.txt" > <column name="PLAYER_ID" type="Double" pk="true"/> <column name="TEAM" type="String" /> <column name="LAST_NAME" type="String" /> <column name="FIRST_NAME" type="String" /> <column name="MIDDLE_NAME" type="String" /> <column name="STATUS" type="String" /> <column name="POSITION" type="String" /> <column name="GAMES_STARTED" type="Double" /> <column name="GAMES_PLAYED" type="Double" /> <column name="TIME_PLAYED" type="Double" /> <column name="FG_MADE" type="Double" /> <column name="FG_ATT" type="Double" /> <column name="FG_PCT" type="Double" /> <column name="THREE_PTR_MADE" type="Double" /> <column name="THREE_PTR_ATT" type="Double" /> <column name="THREE_PTR_PCT" type="Double" /> <column name="FT_MADE" type="Double" /> <column name="FT_ATT" type="Double" /> <column name="FT_PCT" type="Double" /> <column name="STEALS" type="Double" /> <column name="STEALS_AVG" type="Double" /> <column name="STEALS_HI" type="Double" /> <column name="TURNOVERS" type="Double" /> <column name="TURNOVERS_AVG" type="Double" /> <column name="TURNOVERS_HI" type="Double" /> <column name="OFF_REB" type="Double" /> <column name="DEF_REB" type="Double" /> <column name="TOT_REB" type="Double" /> <column name="REB_AVG" type="Double" /> <column name="REB_HI" type="Double" /> <column name="ASSISTS" type="Double" /> <column name="ASSISTS_AVG" type="Double" /> <column name="ASSISTS_HI" type="Double" /> <column name="BLOCKS" type="Double" /> <column name="BLOCKS_AVG" type="Double" /> <column name="BLOCKS_HI" type="Double" /> <column name="PER_FOULS" type="Double" /> <column name="PER_FOULS_AVG" type="Double" /> <column name="PER_FOULS_HI" type="Double" /> <column name="FLAG_FOULS" type="Double" /> <column name="TECH_FOULS" type="Double" /> <column name="TECH_FOULS_HI" type="Double" /> <column name="EJECTED" type="Double" /> <column name="DISQUAL" type="Double" /> <column name="PTS" type="Double" /> <column name="PTS_AVG" type="Double" /> <column name="PTS_HI" type="Double" /> </loader> </jdbc> </go>