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package com.sun.jersey.core.spi.component;
import com.sun.jersey.core.reflection.AnnotatedMethod;
import com.sun.jersey.core.reflection.MethodList;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.inject.InjectableProviderContext;
import com.sun.jersey.spi.inject.Errors;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.Path;
/**
* An injector to inject on a component.
*
* @param the type to inject on.
* @author [email protected]
*/
public class ComponentInjector {
protected final InjectableProviderContext ipc;
protected final Class c;
/**
* Create a component injector.
*
* @param ipc the injector provider context to obtain injectables.
* @param c the class of the type to inject on.
*/
public ComponentInjector(InjectableProviderContext ipc, Class c) {
this.ipc = ipc;
this.c = c;
}
/**
* Inject on an instance.
*
* @param t the instance to inject on.
*/
public void inject(T t) {
AnnotatedContext aoc = new AnnotatedContext();
Class oClass = c;
while (oClass != Object.class) {
for (final Field f : oClass.getDeclaredFields()) {
aoc.setAccessibleObject(f);
final Annotation[] as = f.getAnnotations();
aoc.setAnnotations(as);
boolean missingDependency = false;
for (Annotation a : as) {
Injectable i = ipc.getInjectable(
a.annotationType(), aoc, a, f.getGenericType(),
ComponentScope.UNDEFINED_SINGLETON);
if (i != null) {
missingDependency = false;
setFieldValue(t, f, i.getValue());
break;
} else if (ipc.isAnnotationRegistered(a.annotationType(), f.getGenericType().getClass())) {
missingDependency = true;
}
}
if (missingDependency) {
Errors.missingDependency(f);
}
}
oClass = oClass.getSuperclass();
}
MethodList ml = new MethodList(c.getMethods());
int methodIndex = 0;
for (AnnotatedMethod m : ml.
hasNotMetaAnnotation(HttpMethod.class).
hasNotAnnotation(Path.class).
hasNumParams(1).
hasReturnType(void.class).
nameStartsWith("set")) {
final Annotation[] as = m.getAnnotations();
aoc.setAccessibleObject(m.getMethod());
aoc.setAnnotations(as);
final Type gpt = m.getGenericParameterTypes()[0];
boolean missingDependency = false;
for (Annotation a : as) {
Injectable i = ipc.getInjectable(
a.annotationType(), aoc, a, gpt,
ComponentScope.UNDEFINED_SINGLETON);
if (i != null) {
missingDependency = false;
setMethodValue(t, m, i.getValue());
break;
} else if (ipc.isAnnotationRegistered(a.annotationType(), gpt.getClass())) {
missingDependency = true;
}
}
if (missingDependency) {
Errors.missingDependency(m.getMethod(), methodIndex);
}
methodIndex++;
}
}
private void setFieldValue(final Object resource, final Field f, final Object value) {
AccessController.doPrivileged(new PrivilegedAction
