totally externalized the Json serialization into external static methods so that they done get picked up if the XStream jar is not loaded

2021-09-13 01:26:12 +00:00 · 2014-12-24 00:00:29 +00:00
parent 1d25243408
commit a77e0c0146
5 changed files with 126 additions and 35 deletions
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2014 Higher Frequency Trading
+ *
+ * http://www.higherfrequencytrading.com
+ *
+ * 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 net.openhft.chronicle.map;
+
+import com.thoughtworks.xstream.XStream;
+import com.thoughtworks.xstream.io.json.JettisonMappedXmlDriver;
+import net.openhft.xstreem.convertors.ByteBufferConverter;
+import net.openhft.xstreem.convertors.ChronicleMapConverter;
+import net.openhft.xstreem.convertors.DataValueConverter;
+
+import java.io.*;
+import java.util.Map;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
+
+/**
+ * @author Rob Austin.
+ */
+class JsonSerializer {
+
+    static synchronized <K, V> void getAll(File toFile, Map<K, V> map) throws IOException {
+        final XStream xstream = new XStream(new JettisonMappedXmlDriver());
+        xstream.setMode(XStream.NO_REFERENCES);
+        xstream.alias("cmap", VanillaChronicleMap.EntrySet.class);
+
+        xstream.registerConverter(new ChronicleMapConverter<K, V>(map));
+        xstream.registerConverter(new ByteBufferConverter());
+        xstream.registerConverter(new DataValueConverter());
+        OutputStream outputStream = new FileOutputStream(toFile);
+        if (toFile.getName().toLowerCase().endsWith(".gz"))
+            outputStream = new GZIPOutputStream(outputStream);
+        try (OutputStream out = outputStream) {
+            xstream.toXML(map.entrySet(), out);
+        }
+    }
+
+
+    static synchronized <K, V> void putAll(File fromFile, Map<K, V> map) throws IOException {
+        final XStream xstream = new XStream(new JettisonMappedXmlDriver());
+        xstream.setMode(XStream.NO_REFERENCES);
+        xstream.alias("cmap", VanillaChronicleMap.EntrySet.class);
+        xstream.registerConverter(new ChronicleMapConverter<K, V>(map));
+        xstream.registerConverter(new ByteBufferConverter());
+        xstream.registerConverter(new DataValueConverter());
+
+        InputStream inputStream = new FileInputStream(fromFile);
+        if (fromFile.getName().toLowerCase().endsWith(".gz"))
+            inputStream = new GZIPInputStream(inputStream);
+        try (InputStream out = inputStream) {
+            xstream.fromXML(out);
+        }
+    }
+}