| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 internal |
| |
| import "github.com/spaolacci/murmur3" |
| |
| // JavaStringHash and Java String.hashCode() equivalent |
| func JavaStringHash(s string) uint32 { |
| var h uint32 |
| for i, size := 0, len(s); i < size; i++ { |
| h = 31*h + uint32(s[i]) |
| } |
| |
| return h |
| } |
| |
| // Murmur3_32Hash use Murmur3 hashing function |
| func Murmur3_32Hash(s string) uint32 { |
| h := murmur3.New32() |
| _, err := h.Write([]byte(s)) |
| if err != nil { |
| return 0 |
| } |
| // Maintain compatibility with values used in Java client |
| return h.Sum32() & 0x7fffffff |
| } |
