svn commit: r1439145 - /tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java

[ma...@apache.org]

Author: mattmann
Date: Sun Jan 27 19:18:38 2013
New Revision: 1439145

URL: http://svn.apache.org/viewvc?rev=1439145&view=rev
Log:
Apply patch from Raimund Merkert and Chris Mattmann for TIKA-1047: Provide a JAX-RS to detect only mediatype.

Added:
    tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java

Added: tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java
URL: http://svn.apache.org/viewvc/tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java?rev=1439145&view=auto
==============================================================================
--- tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java (added)
+++ tika/trunk/tika-server/src/main/java/org/apache/tika/server/JSONMessageBodyWriter.java Sun Jan 27 19:18:38 2013
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.tika.server;
+
+import org.apache.tika.io.IOUtils;
+import org.apache.tika.metadata.Metadata;
+import org.eclipse.jetty.util.ajax.JSON;
+
+import javax.ws.rs.Produces;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.ext.MessageBodyWriter;
+import javax.ws.rs.ext.Provider;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.StringReader;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import java.util.Map;
+import java.util.TreeMap;
+
+@Provider
+@Produces(MediaType.APPLICATION_JSON)
+public class JSONMessageBodyWriter implements MessageBodyWriter<Metadata> {
+
+  public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
+    return Metadata.class.isAssignableFrom(type);
+  }
+
+  public long getSize(Metadata data, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
+    return -1;
+  }
+
+  @Override
+  public void writeTo(Metadata metadata, Class<?> type, Type genericType, Annotation[] annotations,
+      MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException,
+      WebApplicationException {
+
+      Map<String, Object> res = new TreeMap<String, Object>();
+
+    for (String name : metadata.names()) {
+      String[] values = metadata.getValues(name);
+      if (metadata.isMultiValued(name)) {
+        res.put(name, values);
+      } else {
+        res.put(name, values[0]);
+      }
+    }
+
+    String json = JSON.toString(res);
+    System.err.println("JSON : "+json);
+    StringReader r = new StringReader(json);
+    IOUtils.copy(r, entityStream);
+    entityStream.flush();
+  }
+}