GSQL使用戶能非常簡(jiǎn)單地訪問/修改關(guān)系型數(shù)據(jù)庫。
舉例：
/**//**
* Test to verify valid construction of default DDL
*
* @author <a href="mailto:jeremy.rayner@bigfoot.com">Jeremy Rayner</a>
* @version $Revision: 1.2 $
*/
package org.javanicus.gsql
import java.io.*
class SqlGeneratorTest extends GroovyTestCase 
{
property database
property sqlGenerator
void setUp() {
typeMap = new TypeMap()
build = new RelationalBuilder(typeMap)
sqlGenerator = new SqlGenerator(typeMap,System.getProperty( "line.separator", "\n" ))
database = build.database(name:'genealogy') {
table(name:'event') {
column(name:'event_id', type:'integer', size:10, primaryKey:true, required:true)
column(name:'description', type:'varchar', size:30)
}
table(name:'individual') {
column(name:'individual_id', type:'integer', size:10, required:true, primaryKey:true, autoIncrement:true)
column(name:'surname', type:'varchar', size:15, required:true)
column(name:'event_id', type:'integer', size:10)
foreignKey(foreignTable:'event') {
reference(local:'event_id',foreign:'event_id')
}
index(name:'surname_index') {
indexColumn(name:'surname')
}
}
}
}
void testGenerateDDL() {
testWriter = new PrintWriter(new FileOutputStream("SqlGeneratorTest.sql"))
sqlGenerator.writer = testWriter
sqlGenerator.createDatabase(database,true)
testWriter.flush()
}
} 