X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2FContent.java;h=3cdf8d7dbec044f6a3a0c7a40fbe092b407a2b86;hb=975fb5e581d0650768afc68a0e839657f318e77a;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..3cdf8d7db 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
@@ -2,6 +2,7 @@ package org.argeo.api.acr;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
@@ -89,10 +90,47 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 
 	void remove();
 
+	/*
+	 * TYPING
+	 */
+	List<QName> getContentClasses();
+
+	default void addContentClasses(QName... contentClass) {
+		throw new UnsupportedOperationException("Adding content classes to " + getPath() + " is not supported");
+	}
+
+	/** 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;
+	}
+
+	/*
+	 * SIBLINGS
+	 */
+
+	default int getSiblingIndex() {
+		return 1;
+	}
+
 	/*
 	 * 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());
 	}
 
@@ -104,12 +142,52 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 		throw new UnsupportedOperationException("Cannot write content " + this + " as " + clss.getName());
 	}
 
+	/*
+	 * CHILDREN
+	 */
+
+	default boolean hasChild(QName name) {
+		for (Content child : this) {
+			if (child.getName().equals(name))
+				return true;
+		}
+		return false;
+	}
+
+	default Content anyOrAddChild(QName name, QName... classes) {
+		Content child = anyChild(name);
+		if (child != null)
+			return child;
+		return this.add(name, classes);
+	}
+
+	/** Any child with this name, or null if there is none */
+	default Content anyChild(QName name) {
+		for (Content child : this) {
+			if (child.getName().equals(name))
+				return child;
+		}
+		return null;
+	}
+
 	/*
 	 * 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);