From adb29b8727eeeddd2e4fa10c7454ece6690caf4a Mon Sep 17 00:00:00 2001
From: Tim Molter <tim.molter@gmail.com>
Date: Wed, 20 Jul 2011 16:31:19 +0200
Subject: [PATCH] inital
---
.../xeiam/examples/ChartServletExample.java | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 src/com/xeiam/examples/ChartServletExample.java
diff --git a/src/com/xeiam/examples/ChartServletExample.java b/src/com/xeiam/examples/ChartServletExample.java
new file mode 100644
index 00000000..b886cc09
--- /dev/null
+++ b/src/com/xeiam/examples/ChartServletExample.java
@@ -0,0 +1,78 @@
+/**
+ * Copyright 2011 Xeiam LLC.
+ *
+ * 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 com.xeiam.examples;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.xeiam.xcharts.BitmapEncoder;
+import com.xeiam.xcharts.Chart;
+import com.xeiam.xcharts.QuickChart;
+
+/**
+ * Generates, stores, and serves charts
+ *
+ * @author timmolter
+ */
+@javax.servlet.annotation.WebServlet(name = "ChartServlet", urlPatterns = { "/chart" }, asyncSupported = true)
+public class ChartServletExample extends HttpServlet {
+
+ private static Map<String, Chart> chartMap = new HashMap<String, Chart>();
+
+ @Override
+ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException {
+
+ String id = request.getParameter("id");
+
+ Chart chart = chartMap.get(id);
+
+ response.setContentType("image/png");
+ ServletOutputStream out = response.getOutputStream();
+
+ try {
+ BitmapEncoder.streamPNG(out, chart);
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ out.close();
+
+ chart = null;
+
+ chartMap.remove(id);
+ }
+
+ /**
+ * Generates a chart and puts it in chartMap
+ *
+ * @return UUID uniquely identifying chart in the chartMap
+ */
+ public static String generateDummyChart() {
+
+ Chart chart = QuickChart.getChart("Sample Chart", "X", "Y", null, null, new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
+ String uuid = UUID.randomUUID().toString();
+ chartMap.put(uuid, chart);
+
+ return uuid;
+ }
+}
--
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