X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2FContent.java;h=4aac92de75b2317f78b83bea56329535c630ff81;hb=c0342975a37c70895c2e8f6b341d790700168d7f;hp=0fdc14fe30e9f0146afbc8f8dde42187086d0200;hpb=5dd5ad8acfa6f78f98b8d8f082f0c1647d02ff2a;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 0fdc14fe3..4aac92de7 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;
@@ -129,6 +130,34 @@ 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
 	 */