X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.api.acr%2Fsrc%2Forg%2Fargeo%2Fapi%2Facr%2FContent.java;h=df5c149e6fc1fc696187d197766ad5f9cf0c2c52;hb=5724ab347ddfba8f2b21cdcc2fa0b8e1e2b4e527;hp=aeea27ef23ff272b2bb0fb0bf4a95c8c65336e1b;hpb=750a3e154c078d6e9fd72d8da950cb325b8ab012;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 aeea27ef2..df5c149e6 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
@@ -1,18 +1,23 @@
 package org.argeo.api.acr;
 
+import static org.argeo.api.acr.NamespaceUtils.unqualified;
+
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
 
-import javax.xml.XMLConstants;
 import javax.xml.namespace.QName;
 
 /**
  * A semi-structured content, with attributes, within a hierarchical structure.
  */
 public interface Content extends Iterable<Content>, Map<QName, Object> {
+	/** The base of a repository path. */
+	String ROOT_PATH = "/";
 
 	QName getName();
 
@@ -26,30 +31,50 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 
 	<A> Optional<A> get(QName key, Class<A> clss);
 
-	default Object get(String key) {
-		if (key.indexOf(':') >= 0)
-			throw new IllegalArgumentException("Name " + key + " has a prefix");
-		return get(new QName(XMLConstants.NULL_NS_URI, key, XMLConstants.DEFAULT_NS_PREFIX));
+	Class<?> getType(QName key);
+
+	boolean isMultiple(QName key);
+
+	<A> List<A> getMultiple(QName key, Class<A> clss);
+
+	/*
+	 * ATTRIBUTES OPERATION HELPERS
+	 */
+	default boolean containsKey(QNamed key) {
+		return containsKey(key.qName());
 	}
 
-	default Object put(String key, Object value) {
-		if (key.indexOf(':') >= 0)
-			throw new IllegalArgumentException("Name " + key + " has a prefix");
-		return put(new QName(XMLConstants.NULL_NS_URI, key, XMLConstants.DEFAULT_NS_PREFIX), value);
+	default <A> Optional<A> get(QNamed key, Class<A> clss) {
+		return get(key.qName(), clss);
 	}
 
-	default Object remove(String key) {
-		if (key.indexOf(':') >= 0)
-			throw new IllegalArgumentException("Name " + key + " has a prefix");
-		return remove(new QName(XMLConstants.NULL_NS_URI, key, XMLConstants.DEFAULT_NS_PREFIX));
+	default Object get(QNamed key) {
+		return get(key.qName());
 	}
 
-	Class<?> getType(QName key);
+	default Object put(QNamed key, Object value) {
+		return put(key.qName(), value);
+	}
 
-	boolean isMultiple(QName key);
+	default Object remove(QNamed key) {
+		return remove(key.qName());
+	}
 
-	<A> Optional<List<A>> getMultiple(QName key, Class<A> clss);
+	// TODO do we really need the helpers below?
+
+	default Object get(String key) {
+		return get(unqualified(key));
+	}
 
+	default Object put(String key, Object value) {
+		return put(unqualified(key), value);
+	}
+
+	default Object remove(String key) {
+		return remove(unqualified(key));
+	}
+
+	@SuppressWarnings("unchecked")
 	default <A> List<A> getMultiple(QName key) {
 		Class<A> type;
 		try {
@@ -57,14 +82,8 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 		} catch (ClassCastException e) {
 			throw new IllegalArgumentException("Requested type is not the default type");
 		}
-		Optional<List<A>> res = getMultiple(key, type);
-		if (res == null)
-			return null;
-		else {
-			if (res.isEmpty())
-				throw new IllegalStateException("Metadata " + key + " is not availabel as list of type " + type);
-			return res.get();
-		}
+		List<A> res = getMultiple(key, type);
+		return res;
 	}
 
 	/*
@@ -73,38 +92,197 @@ public interface Content extends Iterable<Content>, Map<QName, Object> {
 	Content add(QName name, QName... classes);
 
 	default Content add(String name, QName... classes) {
-		if (name.indexOf(':') >= 0)
-			throw new IllegalArgumentException("Name " + name + " has a prefix");
-		return add(new QName(XMLConstants.NULL_NS_URI, name, XMLConstants.DEFAULT_NS_PREFIX), classes);
+		return add(unqualified(name), classes);
 	}
 
 	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;
+	}
+
+	/** AND */
+	default boolean isContentClass(QNamed... contentClass) {
+		List<QName> lst = new ArrayList<>();
+		for (QNamed qNamed : contentClass)
+			lst.add(qNamed.qName());
+		return isContentClass(lst.toArray(new QName[lst.size()]));
+	}
+
+	/** OR */
+	default boolean hasContentClass(QName... contentClass) {
+		List<QName> contentClasses = getContentClasses();
+		for (QName cClass : contentClass) {
+			if (contentClasses.contains(cClass))
+				return true;
+		}
+		return false;
+	}
+
+	/** OR */
+	default boolean hasContentClass(QNamed... contentClass) {
+		List<QName> lst = new ArrayList<>();
+		for (QNamed qNamed : contentClass)
+			lst.add(qNamed.qName());
+		return hasContentClass(lst.toArray(new QName[lst.size()]));
+	}
+
+	/*
+	 * SIBLINGS
+	 */
+
+	default int getSiblingIndex() {
+		return 1;
+	}
+
 	/*
 	 * DEFAULT METHODS
 	 */
-	default <A> A adapt(Class<A> clss) throws IllegalArgumentException {
-		throw new IllegalArgumentException("Cannot adapt content " + this + " to " + clss.getName());
+	default <A> A adapt(Class<A> clss) {
+		throw new UnsupportedOperationException("Cannot adapt content " + this + " to " + clss.getName());
+	}
+
+	default <C extends Closeable> C open(Class<C> clss) throws IOException {
+		throw new UnsupportedOperationException("Cannot open content " + this + " as " + clss.getName());
+	}
+
+	default <A> CompletableFuture<A> write(Class<A> clss) {
+		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 boolean hasChild(QNamed name) {
+		return hasChild(name.qName());
+	}
+
+	default Content anyOrAddChild(QName name, QName... classes) {
+		Content child = anyChild(name);
+		if (child != null)
+			return child;
+		return this.add(name, classes);
+	}
+
+	default Content anyOrAddChild(String name, QName... classes) {
+		return anyOrAddChild(unqualified(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;
+	}
+
+	default List<Content> children(QName name) {
+		List<Content> res = new ArrayList<>();
+		for (Content child : this) {
+			if (child.getName().equals(name))
+				res.add(child);
+		}
+		return res;
+	}
+
+	default List<Content> children(QNamed name) {
+		return children(name.qName());
+	}
+
+	default Optional<Content> soleChild(QNamed name) {
+		return soleChild(name.qName());
+	}
+
+	default Optional<Content> soleChild(QName name) {
+		List<Content> res = children(name);
+		if (res.isEmpty())
+			return Optional.empty();
+		if (res.size() > 1)
+			throw new IllegalStateException(this + " has multiple children with name " + name);
+		return Optional.of(res.get(0));
+	}
+
+	default Content child(QName name) {
+		return soleChild(name).orElseThrow();
+	}
+
+	default Content child(QNamed name) {
+		return child(name.qName());
+	}
+
+	/*
+	 * ATTR AS STRING
+	 */
+	/**
+	 * Convenience method returning an attribute as a {@link String}.
+	 * 
+	 * @param key the attribute name
+	 * @return the attribute value as a {@link String} or <code>null</code>.
+	 * 
+	 * @see Object#toString()
+	 */
+	default String attr(QName key) {
+		return get(key, String.class).orElse(null);
 	}
 
-	default <C extends Closeable> C open(Class<C> clss) throws IOException, IllegalArgumentException {
-		throw new IllegalArgumentException("Cannot open content " + this + " as " + clss.getName());
+	/**
+	 * Convenience method returning an attribute as a {@link String}.
+	 * 
+	 * @param key the attribute name
+	 * @return the attribute value as a {@link String} or <code>null</code>.
+	 * 
+	 * @see Object#toString()
+	 */
+	default String attr(QNamed key) {
+		return attr(key.qName());
+	}
+
+	/**
+	 * Convenience method returning an attribute as a {@link String}.
+	 * 
+	 * @param key the attribute name
+	 * @return the attribute value as a {@link String} or <code>null</code>.
+	 * 
+	 * @see Object#toString()
+	 */
+	default String attr(String key) {
+		return attr(unqualified(key));
 	}
 
 	/*
-	 * CONVENIENCE METHODS
+	 * CONTEXT
+	 */
+	/**
+	 * A content within this repository
+	 * 
+	 * @param path either an absolute path or a path relative to this content
 	 */
-//	default String attr(String key) {
-//		return get(key, String.class);
-//	}
-//
-//	default String attr(Object key) {
-//		return key != null ? attr(key.toString()) : attr(null);
-//	}
-//
-//	default <A> A get(Object key, Class<A> clss) {
-//		return key != null ? get(key.toString(), clss) : get(null, clss);
-//	}
+	Optional<Content> getContent(String path);
 
 	/*
 	 * EXPERIMENTAL UNSUPPORTED