On Aug 24, 2012, at 1:53 PM, exabrial wrote:
> @TomEEModuleConfiguration("my-application-name")
> public class ConfigModule {
>
> @Inject
> private ServerContext context;
>
> @ConfigurationId(env = "Development")
> public void getDevConfig(ModuleConfig config) {
>
> DataSourceConfig dataSourceConfig =
>
> createResourceConfig(MySqlDataSource.class).setUserName("bob").setPassword("thebuilder").setHostName("localhost")
Did some experimenting with this. As I mentioned we have a (mostly) strongly
typed API we use internally:
- http://openejb.apache.org/dev/configuration-and-assembly.html
The only part of that that isn't strongly typed are of course the individual
name=value pairs, but other than that the API is pretty good. Everything (xml,
properties, you name it) boils down to the configuration and assembly API
eventually. Nothing sneaks by that hasn't gone through it at some point.
Anyway, I did some experimenting with hacking up strongly typed versions of the
various things you can configure in a tomee.xml file.
-
http://svn.apache.org/repos/asf/openejb/trunk/openejb/container/openejb-core/src/main/java/org/apache/openejb/config/typed/DataSourceBuilder.java
I generated these based off the possible configuration options for each. The
format modeled after the Amazon AWS API for EC2 which has both "get" and "set"
methods as well as builder methods. They prefix all builder methods with
"with", which I kind of like as it makes it easy to find all the builder
methods in an IDE -- just type ".with" then hit the tab completion.
Anyway, here's a sample usage:
-
http://svn.apache.org/repos/asf/openejb/trunk/openejb/container/openejb-core/src/test/java/org/apache/openejb/config/typed/util/ServerContextTest.java
public void test() throws Exception {
final ServerContext serverContext = new ServerContext();
serverContext.createTransactionManager(new TransactionManagerBuilder()
.withDefaultTransactionTimeout(3, TimeUnit.MINUTES)
.withBufferSizeKb(1024)
.withMaxBuffers(10));
serverContext.createSecurityService(new SecurityServiceBuilder()
.withDefaultUser("unknown"));
serverContext.createContainer(new StatelessContainerBuilder()
.withStrictPooling(true)
.withMaxSize(11)
.withMinSize(5)
.withReplaceAged(true)
.withMaxAge(1, TimeUnit.DAYS)
.withIdleTimeout(30, TimeUnit.MINUTES)
.withSweepInterval(3, TimeUnit.MINUTES)
);
serverContext.createResource(new DataSourceBuilder()
.id("FooDataSource")
.withJtaManaged(true)
.withJdbcDriver("org.hsqldb.jdbcDriver")
.withJdbcUrl(new URI("jdbc:hsqldb:mem:hsqldb"))
.withAccessToUnderlyingConnectionAllowed(false)
.withMaxActive(10)
.withMaxIdle(5)
.withMinEvictableIdleTime(15, TimeUnit.MINUTES)
.withTimeBetweenEvictionRuns(5, TimeUnit.MINUTES)
);
}
Here is what an xml version of the above code might look like (I generated the
builders with JAXB annotations on them so they could easily be built from xml):
<ServerContext>
<TransactionManager
id="TransactionManager"
defaultTransactionTimeoutSeconds="180"
txRecovery="false"
bufferSizeKb="1024"
checksumEnabled="true"
adler32Checksum="true"
flushSleepTimeMilliseconds="50"
logFileDir="txlog"
logFileExt="log"
logFileName="howl"
maxBlocksPerFile="-1"
maxBuffers="10"
maxLogFiles="2"
minBuffers="4"
threadsWaitingForceThreshold="-1"
/>
<SecurityService
id="SecurityService"
defaultUser="unknown"/>
<StatelessContainer
id="StatelessContainer"
accessTimeout="30 SECONDS"
maxSize="11"
minSize="5"
strictPooling="true"
maxAge="1 DAYS"
replaceAged="true"
replaceFlushed="false"
maxAgeOffset="-1"
idleTimeout="30 MINUTES"
garbageCollection="false"
sweepInterval="3 MINUTES"
callbackThreads="5"
closeTimeout="5 MINUTES"
/>
<DataSource
id="FooDataSource"
jtaManaged="true"
jdbcDriver="org.hsqldb.jdbcDriver"
jdbcUrl="jdbc:hsqldb:mem:hsqldb"
userName="sa"
passwordCipher="PlainText"
defaultAutoCommit="true"
initialSize="0"
maxActive="10"
maxIdle="5"
minIdle="0"
maxWait="-1"
testOnBorrow="true"
testOnReturn="false"
testWhileIdle="false"
timeBetweenEvictionRunsMillis="300000"
numTestsPerEvictionRun="3"
minEvictableIdleTimeMillis="900000"
poolPreparedStatements="false"
maxOpenPreparedStatements="0"
accessToUnderlyingConnectionAllowed="false"
ignoreDefaultValues="false"
/>
</ServerContext>
I don't consider any of this perfect, just sort of experimenting with the
feedback.
-David
