Rename SLC Core into SLC Spring.

[gpl/argeo-slc.git] / org.argeo.slc.spring / src / org / argeo / slc / jcr / JcrMetadataWriter.java

diff --git a/org.argeo.slc.spring/src/org/argeo/slc/jcr/JcrMetadataWriter.java b/org.argeo.slc.spring/src/org/argeo/slc/jcr/JcrMetadataWriter.java
new file mode 100644 (file)
index 0000000..c4922d3
--- /dev/null
+++ b/org.argeo.slc.spring/src/org/argeo/slc/jcr/JcrMetadataWriter.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.slc.jcr;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+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 Log log = LogFactory.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;
+       }
+
+}