X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2Fspi%2FContentProvider.java;h=e354672a781c77adc1a09a009f42a3f2264c71b1;hb=f0f342072b85e1d97e79ef2148f7501f1bd646cd;hp=d83cf49c95e27e8b828924a1f71547c235f16f83;hpb=7d2a002f5dcfe8a8c7b29803b70d4b1aff265ed1;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.api.acr/src/org/argeo/api/acr/spi/ContentProvider.java b/org.argeo.api.acr/src/org/argeo/api/acr/spi/ContentProvider.java
index d83cf49c9..e354672a7 100644
--- a/org.argeo.api.acr/src/org/argeo/api/acr/spi/ContentProvider.java
+++ b/org.argeo.api.acr/src/org/argeo/api/acr/spi/ContentProvider.java
@@ -1,9 +1,89 @@
 package org.argeo.api.acr.spi;
 
+import java.util.Iterator;
+import java.util.Spliterator;
+
+import javax.xml.namespace.NamespaceContext;
+
 import org.argeo.api.acr.Content;
+import org.argeo.api.acr.ContentNotFoundException;
+import org.argeo.api.acr.ContentSession;
+import org.argeo.api.acr.search.BasicSearch;
+
+/**
+ * A prover of {@link Content}, which can be mounted in a
+ * {@link ProvidedRepository}.
+ */
+public interface ContentProvider extends NamespaceContext {
+
+	/**
+	 * Return the content at this path, relative to the mount path.
+	 * 
+	 * @return the content at this relative path, never <code>null</code>
+	 * @throws ContentNotFoundException if there is no content at this relative path
+	 */
+	ProvidedContent get(ProvidedSession session, String relativePath) throws ContentNotFoundException;
+
+	/**
+	 * Whether a content exist at his relative path. The default implementation call
+	 * {@link #get(ProvidedSession, String)} and check whether a
+	 * {@link ContentNotFoundException} is thrown or not. It should be overridden as
+	 * soon as there is a mechanism to check existence before actually getting the
+	 * content.
+	 */
+	default boolean exists(ProvidedSession session, String relativePath) {
+		try {
+			get(session, relativePath);
+			return true;
+		} catch (ContentNotFoundException e) {
+			return false;
+		}
+	}
+
+	/** The absolute path where this provider is mounted. */
+	String getMountPath();
+
+	/**
+	 * Search content within this provider. The default implementation throws an
+	 * {@link UnsupportedOperationException}.
+	 */
+	default Spliterator<Content> search(ProvidedSession session, BasicSearch search, String relPath) {
+		throw new UnsupportedOperationException();
+	}
+
+	/*
+	 * EDITION
+	 */
+	/** Switch this content (and its subtree) to editing mode. */
+	default void openForEdit(ProvidedSession session, String relativePath) {
+		throw new UnsupportedOperationException();
+	}
+
+	/** Switch this content (and its subtree) to frozen mode. */
+	default void freeze(ProvidedSession session, String relativePath) {
+		throw new UnsupportedOperationException();
+	}
+
+	/** Whether this content (and its subtree) are in editing mode. */
+	default boolean isOpenForEdit(ProvidedSession session, String relativePath) {
+		throw new UnsupportedOperationException();
+	}
 
-public interface ContentProvider {
+	/**
+	 * Called when an edition cycle is completed. Does nothing by default.
+	 * 
+	 * @see ContentSession#edit(java.util.function.Consumer)
+	 */
+	default void persist(ProvidedSession session) {
+	}
 
-	Content get(ProvidedSession session, String mountPath, String relativePath);
+	/*
+	 * NAMESPACE CONTEXT
+	 */
+	@Override
+	default String getPrefix(String namespaceURI) {
+		Iterator<String> prefixes = getPrefixes(namespaceURI);
+		return prefixes.hasNext() ? prefixes.next() : null;
+	}
 
 }