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2011-10-26 09:44:02 +02:00
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+/* Copyright (c) 2006 Google Inc.                                                                                                                                                                                
+ *                                                                                                                                                                                                               
+ * 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 sample.gbase.basic;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLEncoder;
+
+/**
+ * Dumps to the console the response of a Google Base data API query. 
+ */
+public class QueryExample1 {
+  /**
+   * Url of the Google Base data API snippet feed.
+   */
+  private static final String SNIPPETS_FEED = "http://base.google.com/base/feeds/snippets";
+
+  /**
+   * The query that is sent over to the Google Base data API server.
+   */
+  private static final String QUERY = "cars [item type : products]";
+
+  /**
+   * Connect to <code>SNIPPETS_FEED</code> and display the response. 
+   * @throws IOException if an error occured while connecting or reading from 
+   *         the feed
+   */
+  public void displayItems() throws IOException {
+    URL url = new URL(SNIPPETS_FEED + "?bq=" + 
+        URLEncoder.encode(QUERY, "UTF-8"));
+ 
+    HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection();
+    InputStream inputStream = httpConnection.getInputStream();
+    
+    int ch;
+    while ((ch=inputStream.read()) > 0) {
+      System.out.print((char)ch);
+    }
+  }
+
+  /**
+   * The main method simply creates a <code>QueryExample2</code> instance and
+   * calls <code>displayItems</code>. 
+   */
+  public static void main(String[] args) throws IOException {
+    new QueryExample1().displayItems();
+  }
+}