juergen 02/05/17 01:35:41
Modified: src/share/org/apache/slide/content NodeProperty.java
Log:
Added inner class NamespaceCache.
(ralf)
Revision Changes Path
1.13 +106 -4
jakarta-slide/src/share/org/apache/slide/content/NodeProperty.java
Index: NodeProperty.java
===================================================================
RCS file:
/home/cvs/jakarta-slide/src/share/org/apache/slide/content/NodeProperty.java,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -r1.12 -r1.13
--- NodeProperty.java 14 May 2002 11:36:22 -0000 1.12
+++ NodeProperty.java 17 May 2002 08:35:41 -0000 1.13
@@ -1,7 +1,7 @@
/*
- * $Header:
/home/cvs/jakarta-slide/src/share/org/apache/slide/content/NodeProperty.java,v 1.12
2002/05/14 11:36:22 pnever Exp $
- * $Revision: 1.12 $
- * $Date: 2002/05/14 11:36:22 $
+ * $Header:
/home/cvs/jakarta-slide/src/share/org/apache/slide/content/NodeProperty.java,v 1.13
2002/05/17 08:35:41 juergen Exp $
+ * $Revision: 1.13 $
+ * $Date: 2002/05/17 08:35:41 $
*
* ====================================================================
*
@@ -74,11 +74,13 @@
import org.apache.slide.common.Domain;
import org.apache.slide.common.ObjectValidationFailedException;
+import org.jdom.Namespace;
+
/**
* Node property class
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Remy Maucherat</a>
- * @version $Revision: 1.12 $
+ * @version $Revision: 1.13 $
*/
public final class NodeProperty implements Serializable, Cloneable {
@@ -555,4 +557,104 @@
this.id = id;
}
}
+
+ /**
+ * The usage of this class avoids the creation of mutliple Namespace objects
+ * with the same URI but different prefix. Just use it as a replacement
+ * for the <code>org.jdom.Namespace</code>.
+ * It also predefines Namespace objects for the <code>DAV:</code> and
+ * the <code>http://jakarta.apache.org/slide/</code> namespace
+ * (with an appropriate prefix).
+ */
+ public static class NamespaceCache {
+
+ /**
+ * String constant for <code>S</code>.
+ */
+ public final static String SLIDE_PREFIX = "S";
+
+ /**
+ * String constant for <code>http://jakarta.apache.org/slide/</code>.
+ */
+ public final static String SLIDE_URI = NodeProperty.SLIDE_NAMESPACE;
+
+ /**
+ * Namespace with {@link #SLIDE_PREFIX SLIDE_PREFIX} and
+ * {@link #SLIDE_URI SLIDE_URI}.
+ */
+ public final static Namespace SLIDE_NAMESPACE = getNamespace(SLIDE_PREFIX,
SLIDE_URI);;
+
+ /**
+ * String constant for <code>D</code>.
+ */
+ public final static String DEFAULT_PREFIX = "D";
+
+ /**
+ * String constant for <code>DAV:</code>.
+ */
+ public final static String DEFAULT_URI = NodeProperty.DEFAULT_NAMESPACE;
+
+ /**
+ * Namespace with {@link #DEFAULT_PREFIX DEFAULT_PREFIX} and
+ * {@link #DEFAULT_URI DEFAULT_URI}.
+ */
+ public final static Namespace DEFAULT_NAMESPACE =
getNamespace(DEFAULT_PREFIX, DEFAULT_URI);;
+
+ /**
+ * Maps the namespace' URI to the Namespace object.
+ */
+ protected static Map namespaceMap;
+
+
+ /**
+ * Returns the Namespace for the given <code>uri</code>.
+ * If there is already an entry in the cache for this URI,
+ * this Namespace will be returned.
+ * Otherwise a new Namespace with the prefix <code>""</code>
+ * (default namespace) will be created and put into the cache.
+ *
+ * @param uri the URI for which to return the Namespace.
+ *
+ * @return the Namespace for the given URI.
+ */
+ public static Namespace getNamespace(String uri) {
+ return getNamespace("", uri);
+ }
+
+ /**
+ * Returns the Namespace for the given <code>prefix</code> and
+ * <code>uri</code>.
+ * If there is already an entry in the cache for this URI,
+ * this Namespace will be returned.
+ * Otherwise a new Namespace with the given <code>prefix</code>
+ * and <code>uri</code> will be created and put into the cache.
+ *
+ * @param prefix the prefix for which to return the Namespace.
+ * @param uri the URI for which to return the Namespace.
+ *
+ * @return the Namespace for the given URI.
+ */
+ public static Namespace getNamespace(String prefix, String uri) {
+
+ Namespace namespace = (Namespace)getNamespaceMap().get(uri);
+ if (namespace == null) {
+ namespace = Namespace.getNamespace(prefix, uri);
+ getNamespaceMap().put(namespace.getURI(), namespace);
+ }
+ return namespace;
+ }
+
+ /**
+ * Returns the {@link #namespaceMap namespaceMap}.
+ *
+ * @return the {@link #namespaceMap namespaceMap}.
+ */
+ protected static Map getNamespaceMap() {
+ if (namespaceMap == null) {
+ namespaceMap = new HashMap();
+ }
+ return namespaceMap;
+ }
+ }
+
}
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