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Diffstat (limited to 'src/main/java/io/trygvis/btree/BtreeMap.java')
-rw-r--r--src/main/java/io/trygvis/btree/BtreeMap.java97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/main/java/io/trygvis/btree/BtreeMap.java b/src/main/java/io/trygvis/btree/BtreeMap.java
new file mode 100644
index 0000000..06c348f
--- /dev/null
+++ b/src/main/java/io/trygvis/btree/BtreeMap.java
@@ -0,0 +1,97 @@
+package io.trygvis.btree;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+
+public class BtreeMap<K, V> implements Map<K, V>, Closeable {
+
+ public static interface Serializer<A> {
+ byte[] toBytes(A a);
+
+ A fromBytes(byte[] bytes);
+ }
+
+ private final BtreeFile tree;
+ private final Serializer<K> kSerializer;
+ private final Serializer<V> vSerializer;
+
+ public BtreeMap(BtreeFile tree, Serializer<K> kSerializer, Serializer<V> vSerializer) {
+ this.tree = tree;
+ this.kSerializer = kSerializer;
+ this.vSerializer = vSerializer;
+ }
+
+ @Override
+ public void close() throws IOException {
+ tree.close();
+ }
+
+ @Override
+ public int size() {
+ return 0;
+ }
+
+ @Override
+ public boolean isEmpty() {
+ return size() == 0;
+ }
+
+ @Override
+ public boolean containsKey(Object key) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public boolean containsValue(Object value) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public V get(Object key) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public V put(K key, V value) {
+ try {
+ tree.add(kSerializer.toBytes(key), vSerializer.toBytes(value));
+
+ return null;
+ } catch (IOException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ @Override
+ public V remove(Object key) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void putAll(Map<? extends K, ? extends V> m) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public void clear() {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public Set<K> keySet() {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public Collection<V> values() {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public Set<Entry<K, V>> entrySet() {
+ throw new UnsupportedOperationException();
+ }
+}