1 files changed, 89 insertions, 0 deletions
diff --git a/container-search/src/main/java/com/yahoo/prelude/query/NumericInItem.java b/container-search/src/main/java/com/yahoo/prelude/query/NumericInItem.java
new file mode 100644
index 00000000000..9333173d898
--- /dev/null
+++ b/container-search/src/main/java/com/yahoo/prelude/query/NumericInItem.java
@@ -0,0 +1,89 @@
+// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.prelude.query;
+
+import com.yahoo.compress.IntegerCompressor;
+
+import java.nio.ByteBuffer;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+/*
+ * Class representing an IN operator with a set of 64-bit
+ * integer values.
+ *
+ * @author toregge
+ */
+public class NumericInItem extends InItem {
+    private Set<Long> tokens;
+
+    public NumericInItem(String indexName) {
+        super(indexName);
+        tokens = new HashSet<>(1000);
+    }
+
+    @Override
+    public Item.ItemType getItemType() {
+        return Item.ItemType.NUMERIC_IN;
+    }
+
+    @Override
+    public int encode(ByteBuffer buffer) {
+        encodeThis(buffer);
+        return 1;
+    }
+
+    @Override
+    protected void encodeThis(ByteBuffer buffer) {
+        super.encodeThis(buffer);
+        IntegerCompressor.putCompressedPositiveNumber(tokens.size(), buffer);
+        putString(getIndexName(), buffer);
+        for (var token : tokens) {
+            buffer.putLong(token);
+        }
+    }
+
+    @Override
+    public int getTermCount() {
+        return 1;
+    }
+
+    @Override
+    protected void appendBodyString(StringBuilder buffer) {
+        buffer.append(getIndexName());
+        buffer.append("{");
+        for (var token : tokens) {
+            buffer.append(token.toString());
+            if (token < Integer.MIN_VALUE || token > Integer.MAX_VALUE) {
+                buffer.append("L");
+            }
+            buffer.append(",");
+        }
+        if (!tokens.isEmpty()) {
+            buffer.deleteCharAt(buffer.length() - 1); // remove extra ","
+        }
+        buffer.append("}");
+    }
+
+    public void addToken(long token) {
+        tokens.add(token);
+    }
+
+    public Collection<Long> getTokens() { return Set.copyOf(tokens); }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) return true;
+        if ( ! super.equals(o)) return false;
+        var other = (NumericInItem)o;
+        if ( ! Objects.equals(this.tokens, other.tokens)) return false;
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(), tokens);
+    }
+
+}