diff options
Diffstat (limited to 'searchlib')
| -rw-r--r-- | searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java index a585c989954..be5b4242042 100644 --- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java +++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java @@ -5,6 +5,10 @@ import com.yahoo.javacc.UnicodeUtilities; import com.yahoo.searchlib.rankingexpression.rule.Function; import com.yahoo.tensor.Tensor; import com.yahoo.tensor.TensorType; +import net.jpountz.xxhash.XXHash64; +import net.jpountz.xxhash.XXHashFactory; + +import java.nio.charset.StandardCharsets; /** * A string value. @@ -31,10 +35,15 @@ public class StringValue extends Value { @Override public TensorType type() { return TensorType.empty; } - /** Returns the hashcode of this, to enable strings to be encoded (with reasonable safely) as doubles for optimization */ + /** + * Returns the XXHash hashcode of this, to enable strings to be encoded (with reasonable safely) + * as doubles for optimization. + */ @Override public double asDouble() { - return value.hashCode(); + XXHash64 hasher = XXHashFactory.fastestInstance().hash64(); + byte[] data = value.getBytes(StandardCharsets.UTF_8); + return Double.longBitsToDouble(hasher.hash(data, 0, data.length, 0)); } @Override |