+package org.argeo.slc.jcr;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.api.cms.CmsLog;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.SlcNames;
+
+/**
+ * Writes arbitrary metadata into a child node of a given node (or the node
+ * itself if metadata node name is set to null)
+ */
+public class JcrMetadataWriter implements Runnable {
+ private final static CmsLog log = CmsLog.getLog(JcrMetadataWriter.class);
+
+ private Node baseNode;
+ private String metadataNodeName = SlcNames.SLC_METADATA;
+
+ private Map<String, String> metadata = new HashMap<String, String>();
+
+ public void run() {
+ try {
+ Node metadataNode;
+ if (metadataNodeName != null)
+ metadataNode = baseNode.hasNode(metadataNodeName) ? baseNode.getNode(metadataNodeName)
+ : baseNode.addNode(metadataNodeName);
+ else
+ metadataNode = baseNode;
+
+ for (String key : metadata.keySet())
+ metadataNode.setProperty(key, metadata.get(key));
+
+ baseNode.getSession().save();
+
+ if (log.isDebugEnabled())
+ log.debug("Wrote " + metadata.size() + " metadata entries to " + metadataNode);
+ } catch (RepositoryException e) {
+ throw new SlcException("Cannot write metadata to " + baseNode, e);
+ } finally {
+ JcrUtils.discardUnderlyingSessionQuietly(baseNode);
+ }
+
+ }
+
+ public void setBaseNode(Node baseNode) {
+ this.baseNode = baseNode;
+ }
+
+ public void setMetadataNodeName(String metadataNodeName) {
+ this.metadataNodeName = metadataNodeName;
+ }
+
+ public void setMetadata(Map<String, String> metadata) {
+ this.metadata = metadata;
+ }
+
+}