HCOL-219 extracted out some of the JSON parsing

2021-09-13 01:26:12 +00:00 · 2014-12-19 13:55:35 +00:00
parent a47f177710
commit a02717ddd0
2 changed files with 78 additions and 46 deletions
@@ -0,0 +1,75 @@
+/*
+ * 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.converters.ConversionException;
+import com.thoughtworks.xstream.io.HierarchicalStreamReader;
+
+import java.lang.reflect.Method;
+
+/**
+ * Created by Rob on 18/12/14.
+ */
+class XStreamHelper {
+
+    static Object to$$Native(HierarchicalStreamReader reader, final Class aClass, final boolean isKey, ChronicleMap map) {
+
+
+        final Object o = isKey ? map.newKeyInstance() : map.newValueInstance();
+        try {
+            for (Method $$nativeMethod : o.getClass().getMethods()) {
+                if ($$nativeMethod.getName().equals("setValue") && $$nativeMethod.getParameterTypes()
+                        .length == 1) {
+
+                    Class<?> parameterType = $$nativeMethod.getParameterTypes()[0];
+                    String value = reader.getValue();
+
+
+                    if (parameterType.isPrimitive()) {
+
+                        // convert the primitive to their boxed type
+
+                        if (parameterType == int.class)
+                            parameterType = Integer.class;
+                        else if (parameterType == char.class)
+                            parameterType = Character.class;
+                        else {
+                            final String name = parameterType.getSimpleName();
+
+                            final String properName = "java.lang." + Character.toString
+                                    (name.charAt(0)).toUpperCase()
+                                    + name.substring(1);
+                            parameterType = Class.forName(properName);
+                        }
+                    }
+
+
+                    final Method valueOf = parameterType.getMethod("valueOf", String.class);
+                    final Object invoke = valueOf.invoke(null, value);
+                    $$nativeMethod.invoke(o, invoke);
+                    return o;
+
+                }
+            }
+        } catch (Exception e) {
+            throw new ConversionException("class=" + aClass.getCanonicalName(), e);
+        }
+        throw new ConversionException("setValue(..) method not found in class=" + aClass
+                .getCanonicalName
+                        ());
+    }
+}