Introduce namespace support

[lgpl/argeo-commons.git] / org.argeo.api / src / org / argeo / api / gcr / ContentSession.java

diff --git a/org.argeo.api/src/org/argeo/api/gcr/ContentSession.java b/org.argeo.api/src/org/argeo/api/gcr/ContentSession.java
index d779093be863c160914e32a22d5fcca415875431..6c80189b24aebecafb4211d6f2a30a9bad05e8ba 100644 (file)
--- a/org.argeo.api/src/org/argeo/api/gcr/ContentSession.java
+++ b/org.argeo.api/src/org/argeo/api/gcr/ContentSession.java
@@ -1,13 +1,49 @@
 package org.argeo.api.gcr;
 
 import java.util.Locale;
+import java.util.Objects;
 
 import javax.security.auth.Subject;
+import javax.xml.XMLConstants;
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
 
-public interface ContentSession {
+public interface ContentSession extends NamespaceContext {
        Subject getSubject();
 
        Locale getLocale();
 
        Content get(String path);
+
+       /*
+        * NAMESPACE CONTEXT
+        */
+
+       default ContentName parsePrefixedName(String nameWithPrefix) {
+               Objects.requireNonNull(nameWithPrefix, "Name cannot be null");
+               if (nameWithPrefix.charAt(0) == '{') {
+                       return new ContentName(QName.valueOf(nameWithPrefix), this);
+               }
+               int index = nameWithPrefix.indexOf(':');
+               if (index < 0) {
+                       return new ContentName(nameWithPrefix);
+               }
+               String prefix = nameWithPrefix.substring(0, index);
+               // TODO deal with empty name?
+               String localName = nameWithPrefix.substring(index + 1);
+               String namespaceURI = getNamespaceURI(prefix);
+               if (XMLConstants.NULL_NS_URI.equals(namespaceURI))
+                       throw new IllegalStateException("Prefix " + prefix + " is unbound.");
+               return new ContentName(namespaceURI, localName, prefix);
+       }
+
+       default String toPrefixedName(QName name) {
+               if (XMLConstants.NULL_NS_URI.equals(name.getNamespaceURI()))
+                       return name.getLocalPart();
+               String prefix = getPrefix(name.getNamespaceURI());
+               if (prefix == null)
+                       throw new IllegalStateException("Namespace " + name.getNamespaceURI() + " is unbound.");
+               return prefix + ":" + name.getLocalPart();
+       }
+
 }