android-openrat

commit ff9d41bd4c1262c853abe593785195f755babe76
parent 7fff54c5627c038b6f49297b29f3618ab00b56cd
Author: dankert <devnull@localhost>
Date:   Mon, 17 Oct 2011 00:20:44 +0200

Weitere Client-Abstraktionsebene des OpenRat-Servers.

Diffstat:
src/de/openrat/client/OpenRatClient.java
 | 
207
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 207 insertions(+), 0 deletions(-)
diff --git a/src/de/openrat/client/OpenRatClient.java b/src/de/openrat/client/OpenRatClient.java
@@ -0,0 +1,207 @@
+package de.openrat.client;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import de.openrat.android.blog.FolderEntry;
+import de.openrat.android.blog.FolderEntry.FType;
+
+/**
+ * Komfortabler Zugriff auf das OpenRat-CMS.
+ * 
+ * @author Jan Dankert
+ * 
+ */
+public class OpenRatClient extends CMSRequest
+{
+
+	/**
+	 * 
+	 */
+	public OpenRatClient()
+	{
+		super();
+	}
+
+	/**
+	 * @param host
+	 * @param path
+	 * @param port
+	 */
+	public OpenRatClient(String host, String path, int port)
+	{
+		super(host, path, port);
+	}
+
+	/**
+	 * @param host
+	 * @param path
+	 */
+	public OpenRatClient(String host, String path)
+	{
+		super(host, path);
+	}
+
+	/**
+	 * @param host
+	 */
+	public OpenRatClient(String host)
+	{
+		super(host);
+	}
+
+	/**
+	 * Ermittelt den Inhalt eines Ordners.
+	 * 
+	 * @param folderid
+	 *            Id des zu ladenen Ordners. Falls <code>null</code>, wird der
+	 *            Rootfolder geladen.
+	 * @return Ordner-Einträge
+	 */
+	public List<FolderEntry> getFolderEntries(String folderid) throws IOException
+	{
+		if (folderid == null)
+		{
+
+			clearParameters();
+			setAction("tree");
+			setActionMethod("load");
+
+			JSONObject json = readJSON();
+
+			try
+			{
+				folderid = json.getJSONArray("zeilen").getJSONObject(1)
+						.getString("name");
+			}
+			catch (JSONException e)
+			{
+				throw new OpenRatClientException(
+						"JSON-Error while resolving root folder", e);
+			}
+		}
+
+		final List<FolderEntry> data = new ArrayList<FolderEntry>();
+
+		super.clearParameters();
+		super.setParameter("id", folderid);
+
+		super.setParameter("action", "folder");
+		super.setParameter("subaction", "show");
+
+		try
+		{
+			JSONObject json = readJSON();
+			JSONObject inhalte = json.getJSONObject("object");
+			JSONArray names = inhalte.names();
+
+			for (int i = 0; i < names.length(); i++)
+			{
+				JSONObject obj = inhalte.getJSONObject(names.getString(i));
+
+				final FolderEntry entry = new FolderEntry();
+				entry.type = FType.valueOf(obj.getString("type").toUpperCase());
+				entry.name = obj.getString("name");
+				entry.description = obj.getString("desc");
+				entry.id = names.getString(i);
+				data.add(entry);
+
+			}
+
+		}
+		catch (JSONException e)
+		{
+			throw new OpenRatClientException("Coult not determine root folder",
+					e);
+		}
+
+		return data;
+	}
+
+	protected JSONObject readJSON() throws OpenRatClientException
+	{
+
+		String response;
+		try
+		{
+			response = super.performRequest();
+		}
+		catch (IOException e)
+		{
+			throw new OpenRatClientException(
+					"I/O-Error while performing the request", e);
+		}
+
+		try
+		{
+			return new JSONObject(response);
+			// TODO: Notices und Errors aus dem JSON-Dokument auswerten und ggf.
+			// Exception werfen.
+		}
+		catch (JSONException e)
+		{
+			throw new OpenRatClientException(
+					"JSON Parsing Error. Original repsonse was:\n" + response,
+					e);
+		}
+	}
+
+	/**
+	 * @author dankert
+	 * 
+	 */
+	public class OpenRatClientException extends IOException
+	{
+		/**
+		 * 
+		 */
+		public OpenRatClientException()
+		{
+			super();
+		}
+
+		/**
+		 * @param throwable
+		 */
+		public OpenRatClientException(Throwable throwable)
+		{
+			super(throwable.getMessage());
+		}
+
+		private Throwable cause;
+
+		/**
+		 * @param detailMessage
+		 */
+		public OpenRatClientException(String detailMessage)
+		{
+			super(detailMessage);
+		}
+
+		/**
+		 * @param detailMessage
+		 */
+		public OpenRatClientException(String detailMessage, Throwable cause)
+		{
+			super(detailMessage);
+			this.cause = cause;
+		}
+
+		/**
+		 * {@inheritDoc}
+		 * 
+		 * @see java.lang.Throwable#getCause()
+		 */
+		@Override
+		public Throwable getCause()
+		{
+			return this.cause;
+		}
+
+	}
+}