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package org.apache.tuscany.core.system.config;
import java.lang.reflect.Constructor;
import java.util.List;
import java.util.Map;
import org.apache.tuscany.core.builder.ContextCreationException;
import org.apache.tuscany.core.builder.RuntimeConfiguration;
import org.apache.tuscany.core.context.AggregateContext;
import org.apache.tuscany.core.context.InstanceContext;
import org.apache.tuscany.core.injection.EventInvoker;
import org.apache.tuscany.core.injection.Injector;
import org.apache.tuscany.core.injection.PojoObjectFactory;
import org.apache.tuscany.core.invocation.spi.ProxyFactory;
import org.apache.tuscany.core.system.context.SystemComponentContext;
import org.apache.tuscany.model.assembly.Scope;
/**
* A RuntimeConfiguration that handles system component implementation types
*
* @version $Rev$ $Date$
*/
public class SystemComponentRuntimeConfiguration implements RuntimeConfiguration<InstanceContext> {
// the component name as configured in the hosting module
private String name;
// the implementation type constructor
private Constructor ctr;
// injectors for properties, references and other metadata values such as @Context
private List<Injector> setters;
// an invoker for a method decorated with @Init
private EventInvoker init;
// whether the component should be eagerly initialized when its scope starts
private boolean eagerInit;
// an invoker for a method decorated with @Destroy
private EventInvoker destroy;
// the scope of the implementation instance
private Scope scope;
// if the component implementation scope is stateless
private boolean stateless;
// if the component implementation is an aggregate context
private boolean isAggregate;
// ----------------------------------
// Constructors
// ----------------------------------
/**
* Creates the runtime configuration
*
* @param name the SCDL name of the component the context refers to
* @param ctr the implementation type constructor
* @param setters a collection of <code>Injectors</code> used to configure properties, references and other meta
* data values on implementation instances
* @param eagerInit whether the component should be eagerly initialized
* @param init an <code>Invoker</code> pointing to a method on the implementation type decorated with
* <code>@Init</code>
* @param destroy an <code>Invoker</code> pointing to a method on the implementation type decorated with
* <code>@Destroy</code>
* @param scope the scope of the component implementation type
*/
public SystemComponentRuntimeConfiguration(String name, Constructor ctr, List<Injector> setters, boolean eagerInit,
EventInvoker init, EventInvoker destroy, Scope scope) {
assert (name != null) : "Name was null";
assert (ctr != null) : "Constructor was null";
assert (setters != null) : "Setters were null";
this.name = name;
this.ctr = ctr;
this.isAggregate = AggregateContext.class.isAssignableFrom(ctr.getDeclaringClass());
this.setters = setters;
this.eagerInit = eagerInit;
this.init = init;
this.destroy = destroy;
this.scope = scope;
stateless = (scope == Scope.INSTANCE);
}
// ----------------------------------
// Methods
// ----------------------------------
public String getName() {
return name;
}
public Scope getScope() {
return scope;
}
public InstanceContext createInstanceContext() throws ContextCreationException {
if (isAggregate) {
// aggregate context types are themselves an instance context
PojoObjectFactory objectFactory = new PojoObjectFactory(ctr, null, setters);
AggregateContext ctx = (AggregateContext) objectFactory.getInstance();
ctx.setName(name);
return ctx;
} else {
PojoObjectFactory objectFactory = new PojoObjectFactory(ctr, null, setters);
return new SystemComponentContext(name, objectFactory, eagerInit, init, destroy, stateless);
}
}
// -- Proxy
public void prepare() {
}
public void addTargetProxyFactory(String serviceName, ProxyFactory factory) {
throw new UnsupportedOperationException();
}
public ProxyFactory getTargetProxyFactory(String serviceName) {
return null;
}
public Map<String, ProxyFactory> getTargetProxyFactories() {
return null;
}
public void addSourceProxyFactory(String referenceName, ProxyFactory factory) {
throw new UnsupportedOperationException();
}
public ProxyFactory getSourceProxyFactory(String referenceName) {
return null;
}
public Map<String, ProxyFactory> getSourceProxyFactories() {
return null;
}
}
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