New Chronicle-Map

src/main/java/net/openhft/chronicle/map/ChronicleMap.java

@@ -1,14 +1,12 @@
 /*
- * Copyright 2014 Higher Frequency Trading
- * <p/>
- * http://www.higherfrequencytrading.com
- * <p/>
+ * 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
- * <p/>
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
+ *
  * 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.
@@ -18,10 +16,40 @@
 
 package net.openhft.chronicle.map;
 
-import net.openhft.collections.SharedHashMap;
+import java.io.Closeable;
+import java.io.File;
+import java.util.concurrent.ConcurrentMap;
+
+public interface ChronicleMap<K, V> extends ConcurrentMap<K, V>, Closeable {
+    /**
+     * @return size as a long.
+     * @see java.util.Map size()
+     */
+    long longSize();
+
+    /**
+     * Get a value for a key if available.  If the value is Byteable, it will be assigned to
+     * reference the value, instead of copying the data for zero copy access to the collection.
+     *
+     * @param key   to lookup.
+     * @param value to reuse if possible. If null, a new object will be created.
+     * @return value found or null if not.
+     */
+    V getUsing(K key, V value);
+
+    /**
+     * Acquire a value for a key, creating if absent. If the value is Byteable, it will be assigned
+     * to reference the value, instead of copying the data.
+     *
+     * @param key   to lookup.
+     * @param value to reuse if possible. If null, a new object will be created.
+     * @return value created or found.
+     */
+    V acquireUsing(K key, V value);
+
+    /**
+     * @return The file or directory for this ChronicleMap
+     */
+    File file();
 
-/**
- * @author Rob Austin.
- */
-public interface ChronicleMap<K, V> extends SharedHashMap<K, V> {
 }