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Code Issues Releases Wiki Activity

Merge branch '4.4'

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This commit is contained in:
Florian Schmaus 2020-08-29 16:39:15 +02:00
commit 525f27abf1
5 changed files with 82 additions and 19 deletions
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5
smack-core/src/main/java/org/jivesoftware/smack/packet/StanzaView.java
View file

@ -90,11 +90,12 @@ public interface StanzaView extends XmlLangElement {
default <E extends ExtensionElement> E getExtension(Class<E> extensionElementClass) {
QName qname = XmppElementUtil.getQNameFor(extensionElementClass);
ExtensionElement extensionElement = getExtension(qname);
if (!extensionElementClass.isInstance(extensionElement)) {
if (extensionElement == null) {
return null;
}
return extensionElementClass.cast(extensionElement);
return XmppElementUtil.castOrThrow(extensionElement, extensionElementClass);
}
/**

6
smack-core/src/main/java/org/jivesoftware/smack/provider/ProviderManager.java
View file

@ -243,7 +243,11 @@ public final class ProviderManager {
*/
public static ExtensionElementProvider<ExtensionElement> getExtensionProvider(String elementName, String namespace) {
QName key = getQName(elementName, namespace);
return extensionProviders.get(key);
return getExtensionProvider(key);
}
public static ExtensionElementProvider<ExtensionElement> getExtensionProvider(QName qname) {
return extensionProviders.get(qname);
}
/**

58
smack-core/src/main/java/org/jivesoftware/smack/util/XmppElementUtil.java
View file

@ -23,17 +23,31 @@ import java.util.logging.Logger;
import javax.xml.namespace.QName;
import org.jivesoftware.smack.packet.ExtensionElement;
import org.jivesoftware.smack.packet.FullyQualifiedElement;
import org.jivesoftware.smack.packet.StandardExtensionElement;
import org.jivesoftware.smack.provider.ProviderManager;
import org.jxmpp.util.cache.LruCache;
public class XmppElementUtil {
private static final LruCache<Class<? extends FullyQualifiedElement>, QName> CLASS_TO_QNAME_CACHE = new LruCache<>(512);
public static final Logger LOGGER = Logger.getLogger(XmppElementUtil.class.getName());
public static QName getQNameFor(Class<? extends FullyQualifiedElement> fullyQualifiedElement) {
QName qname = CLASS_TO_QNAME_CACHE.get(fullyQualifiedElement);
if (qname != null) {
return qname;
}
try {
Object qnameObject = fullyQualifiedElement.getField("QNAME").get(null);
if (QName.class.isAssignableFrom(qnameObject.getClass())) {
return (QName) qnameObject;
qname = (QName) qnameObject;
CLASS_TO_QNAME_CACHE.put(fullyQualifiedElement, qname);
return qname;
}
LOGGER.warning("The QNAME field of " + fullyQualifiedElement + " is not of type QNAME.");
} catch (NoSuchFieldException e) {
@ -52,24 +66,52 @@ public class XmppElementUtil {
throw new IllegalArgumentException("The " + fullyQualifiedElement + " has no ELEMENT, NAMESPACE or QNAME member. Consider adding QNAME", e);
}
return new QName(namespace, element);
qname = new QName(namespace, element);
CLASS_TO_QNAME_CACHE.put(fullyQualifiedElement, qname);
return qname;
}
public static <E extends FullyQualifiedElement, R extends FullyQualifiedElement> List<R> getElementsFrom(
MultiMap<QName, E> elementMap, Class<R> extensionElementClass) {
public static <E extends ExtensionElement> List<E> getElementsFrom(
MultiMap<QName, ExtensionElement> elementMap, Class<E> extensionElementClass) {
QName qname = XmppElementUtil.getQNameFor(extensionElementClass);
List<E> extensionElements = elementMap.getAll(qname);
List<ExtensionElement> extensionElements = elementMap.getAll(qname);
if (extensionElements.isEmpty()) {
return Collections.emptyList();
}
List<R> res = new ArrayList<>(extensionElements.size());
for (E extensionElement : extensionElements) {
R e = extensionElementClass.cast(extensionElement);
List<E> res = new ArrayList<>(extensionElements.size());
for (ExtensionElement extensionElement : extensionElements) {
E e = castOrThrow(extensionElement, extensionElementClass);
res.add(e);
}
return res;
}
public static <E extends ExtensionElement> E castOrThrow(ExtensionElement extensionElement, Class<E> extensionElementClass) {
if (!extensionElementClass.isInstance(extensionElement)) {
final QName qname = getQNameFor(extensionElementClass);
final String detailMessage;
if (extensionElement instanceof StandardExtensionElement) {
detailMessage = "because there is no according extension element provider registered with ProviderManager for "
+ qname
+ ". WARNING: This indicates a serious problem with your Smack setup, probably causing Smack not being able to properly initialize itself.";
} else {
Object provider = ProviderManager.getExtensionProvider(qname);
detailMessage = "because there is an inconsistency with the provider registered with ProviderManager: the active provider for "
+ qname + " '" + provider.getClass()
+ "' does not return instances of type " + extensionElementClass
+ ", but instead returns instances of type " + extensionElement.getClass() + ".";
}
String message = "Extension element is not of expected class '" + extensionElementClass.getName() + "', "
+ detailMessage;
throw new IllegalStateException(message);
}
return extensionElementClass.cast(extensionElement);
}
}