X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;ds=sidebyside;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2Fspi%2FProvidedContent.java;h=f1e5aaaa80f24af4dce505a935b342645d9910c8;hb=5724ab347ddfba8f2b21cdcc2fa0b8e1e2b4e527;hp=e2807c0efd19e746c7a9ab41a2971e36c1fe55e9;hpb=d2bca81ff63496bf1d879f4cbcd6a531f598e69c;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.api.acr/src/org/argeo/api/acr/spi/ProvidedContent.java b/org.argeo.api.acr/src/org/argeo/api/acr/spi/ProvidedContent.java
index e2807c0ef..f1e5aaaa8 100644
--- a/org.argeo.api.acr/src/org/argeo/api/acr/spi/ProvidedContent.java
+++ b/org.argeo.api.acr/src/org/argeo/api/acr/spi/ProvidedContent.java
@@ -1,35 +1,64 @@
 package org.argeo.api.acr.spi;
 
+import java.util.Optional;
+
 import org.argeo.api.acr.Content;
 
 /** A {@link Content} implementation. */
 public interface ProvidedContent extends Content {
-	final static String ROOT_PATH = "/";
-
+	/** The related {@link ProvidedSession}. */
 	ProvidedSession getSession();
 
+	/** The {@link ContentProvider} this {@link Content} belongs to. */
 	ContentProvider getProvider();
 
+	/** Depth relative to the root of the repository. */
 	int getDepth();
 
+	/**
+	 * Whether this is the root node of the related repository. Default checks
+	 * whether <code>{@link #getDepth()} == 0</code>, but it can be optimised by
+	 * implementations.
+	 */
+	default boolean isRoot() {
+		return getDepth() == 0;
+	}
+
 	/**
 	 * An opaque ID which is guaranteed to uniquely identify this content within the
 	 * session return by {@link #getSession()}. Typically used for UI.
 	 */
 	String getSessionLocalId();
 
+	/**
+	 * The {@link Content} within the same {@link ContentProvider} which can be used
+	 * to mount another {@link ContentProvider}.
+	 */
 	default ProvidedContent getMountPoint(String relativePath) {
 		throw new UnsupportedOperationException("This content doe not support mount");
 	}
 
-	default ProvidedContent getContent(String path) {
-		Content fileNode;
-		if (path.startsWith(ROOT_PATH)) {// absolute
-			fileNode = getSession().get(path);
+	@Override
+	default Optional<Content> getContent(String path) {
+		String absolutePath;
+		if (path.startsWith(Content.ROOT_PATH)) {// absolute
+			absolutePath = path;
 		} else {// relative
-			String absolutePath = getPath() + '/' + path;
-			fileNode = getSession().get(absolutePath);
+			absolutePath = getPath() + '/' + path;
 		}
-		return (ProvidedContent) fileNode;
+		return getSession().exists(absolutePath) ? Optional.of(getSession().get(absolutePath)) : Optional.empty();
+	}
+
+	/*
+	 * ACCESS
+	 */
+	/** Whether the session has the right to access the parent. */
+	default boolean isParentAccessible() {
+		return true;
+	}
+
+	/** Whether the related session can open this content for edit. */
+	default boolean canEdit() {
+		return false;
 	}
 }