X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2FContent.java;h=0fdc14fe30e9f0146afbc8f8dde42187086d0200;hb=55d1a78150b6be0004f6bcb28703bcdd6daf55a1;hp=c2202b0fa31e14ad7db87a0f104390beaa792a7f;hpb=e3db2eba9a7f8380a6f76d7b0e6cd4825e91893e;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.api.acr/src/org/argeo/api/acr/Content.java b/org.argeo.api.acr/src/org/argeo/api/acr/Content.java
index c2202b0fa..0fdc14fe3 100644
--- a/org.argeo.api.acr/src/org/argeo/api/acr/Content.java
+++ b/org.argeo.api.acr/src/org/argeo/api/acr/Content.java
@@ -89,10 +89,35 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 
 	void remove();
 
+	/*
+	 * TYPING
+	 */
+	List<QName> getContentClasses();
+
+	/** AND */
+	default boolean isContentClass(QName... contentClass) {
+		List<QName> contentClasses = getContentClasses();
+		for (QName cClass : contentClass) {
+			if (!contentClasses.contains(cClass))
+				return false;
+		}
+		return true;
+	}
+
+	/** OR */
+	default boolean hasContentClass(QName... contentClass) {
+		List<QName> contentClasses = getContentClasses();
+		for (QName cClass : contentClass) {
+			if (contentClasses.contains(cClass))
+				return true;
+		}
+		return false;
+	}
+
 	/*
 	 * DEFAULT METHODS
 	 */
-	default <A> A adapt(Class<A> clss) throws IllegalArgumentException {
+	default <A> A adapt(Class<A> clss) {
 		throw new UnsupportedOperationException("Cannot adapt content " + this + " to " + clss.getName());
 	}
 
@@ -107,9 +132,21 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 	/*
 	 * CONVENIENCE METHODS
 	 */
-//	default String attr(String key) {
-//		return get(key, String.class);
-//	}
+	default String attr(String key) {
+		Object obj = get(key);
+		if (obj == null)
+			return null;
+		return obj.toString();
+
+	}
+
+	default String attr(QName key) {
+		Object obj = get(key);
+		if (obj == null)
+			return null;
+		return obj.toString();
+
+	}
 //
 //	default String attr(Object key) {
 //		return key != null ? attr(key.toString()) : attr(null);