Demand / Supply string transformation

[alesj]

Talking yesterday at Zurich JUG, describing our IoC, when mentioning Demand/Supply, Bela got an idea of extending that notion with a regexp.

Thinking about it, we could have a generic 'transfromer' attribute on the demand/supply element.

e.g.

<demand transformer="org.jboss.ioc.transformer.RegExp">^[A-Z0-9._%+-]+@jboss\.((org)|(com))$</demand>

<supply>[e-mail]</supply>

<demand transformer="org.jboss.ioc.transformer.IntLimit">(0,255]</demand>

<supply transformer="org.jboss.util.propertyeditor.IntegerEditor">128</supply>

Where a demand transformer would create Matcheable, supply transformer would simple be a PropertyEditor.

e.g.

public interface Matcheable
{
 boolean match(Object other);
}

for(Map.Entry entry : suppliers.keySet())
{
 if (name instance of Matcheable)
 {
 Matcheable matcheable = (Matcheable)name;
 if (matcheable.match(entry.getKey()))
 List<KernelControllerContext> list = entry.getValue();
 if (list != null && list.isEmpty() == false)
 return list.get(0);
 }

 ...
}

[alesj]

Done - already commited in the trunk.

This test case shows what you can do:

 public void testMatching() throws Throwable
 {
 setBeanMetaDatas();

 ControllerContext regexpDemand = assertInstall(0, "regexpDemander", getState());
 assertInstall(1, "regexpSupplier");
 assertEquals(ControllerState.INSTALLED, regexpDemand.getState());

 ControllerContext limitDemand = assertInstall(2, "intervalDemander", getState());
 assertInstall(3, "intervalSupplier");
 assertEquals(ControllerState.INSTALLED, limitDemand.getState());

 ControllerContext customDemand = assertInstall(4, "customDemander", getState());
 assertInstall(5, "customSupplier");
 assertEquals(ControllerState.INSTALLED, customDemand.getState());
 }

 protected ControllerState getState()
 {
 return ControllerState.PRE_INSTALL;
 }

 protected void setBeanMetaDatas() throws Throwable
 {
 BeanMetaDataBuilder b0 = BeanMetaDataBuilderFactory.createBuilder("regexpDemander", Object.class.getName());
 b0.addDemand("^[a-zA-Z0-9._%+-]+@acme\\.((org)|(com))$", null, "regexp");
 BeanMetaDataBuilder b1 = BeanMetaDataBuilderFactory.createBuilder("regexpSupplier", Object.class.getName());
 b1.addSupply("[e-mail]");

 BeanMetaDataBuilder b2 = BeanMetaDataBuilderFactory.createBuilder("intervalDemander", Object.class.getName());
 b2.addDemand("(1,10]", null, "interval");
 BeanMetaDataBuilder b3 = BeanMetaDataBuilderFactory.createBuilder("intervalSupplier", Object.class.getName());
 b3.addSupply("5", "java.lang.Integer");

 BeanMetaDataBuilder b4 = BeanMetaDataBuilderFactory.createBuilder("customDemander", Object.class.getName());
 b4.addDemand("fragment", null, CustomMatcherTransfomer.class.getName());
 BeanMetaDataBuilder b5 = BeanMetaDataBuilderFactory.createBuilder("customSupplier", Object.class.getName());
 b5.addSupply("i supply fragment word");

 setBeanMetaDatas(new BeanMetaData[]
 {
 b0.getBeanMetaData(),
 b1.getBeanMetaData(),
 b2.getBeanMetaData(),
 b3.getBeanMetaData(),
 b4.getBeanMetaData(),
 b5.getBeanMetaData(),
 }
 );
 }