| /* |
| * 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 org.apache.ignite.internal.util; |
| |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| import java.nio.charset.StandardCharsets; |
| import java.time.Instant; |
| import java.time.LocalDate; |
| import java.time.LocalDateTime; |
| import java.time.LocalTime; |
| import java.util.BitSet; |
| import java.util.UUID; |
| import org.apache.ignite.lang.IgniteInternalException; |
| |
| /** |
| * Implement hash calculator. |
| */ |
| public class HashCalculator { |
| private int hash = 0; |
| |
| /** |
| * Append value to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void append(Object v) { |
| if (v == null) { |
| appendNull(); |
| return; |
| } |
| |
| if (v.getClass() == Byte.class) { |
| appendByte((byte) v); |
| } else if (v.getClass() == Short.class) { |
| appendShort((short) v); |
| } else if (v.getClass() == Integer.class) { |
| appendInt((int) v); |
| } else if (v.getClass() == Long.class) { |
| appendLong((long) v); |
| } else if (v.getClass() == Float.class) { |
| appendFloat((float) v); |
| } else if (v.getClass() == Double.class) { |
| appendDouble((Double) v); |
| } else if (v.getClass() == BigInteger.class) { |
| appendNumber((BigInteger) v); |
| } else if (v.getClass() == BigDecimal.class) { |
| appendDecimal((BigDecimal) v); |
| } else if (v.getClass() == UUID.class) { |
| appendUuid((UUID) v); |
| } else if (v.getClass() == LocalDate.class) { |
| appendDate((LocalDate) v); |
| } else if (v.getClass() == LocalTime.class) { |
| appendTime((LocalTime) v); |
| } else if (v.getClass() == LocalDateTime.class) { |
| appendDateTime((LocalDateTime) v); |
| } else if (v.getClass() == Instant.class) { |
| appendTimestamp((Instant) v); |
| } else if (v.getClass() == byte[].class) { |
| appendBytes((byte[]) v); |
| } else if (v.getClass() == String.class) { |
| appendString((String) v); |
| } else if (v.getClass() == BitSet.class) { |
| appendBitmask((BitSet) v); |
| } else { |
| throw new IgniteInternalException("Unsupported value type: [cls=" + v.getClass() + ']'); |
| } |
| } |
| |
| /** |
| * Append null value to hash calculation. |
| */ |
| public void appendNull() { |
| appendByte((byte) 0); |
| } |
| |
| /** |
| * Append byte to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendByte(byte v) { |
| hash = HashUtils.hash32(v, hash); |
| } |
| |
| /** |
| * Append short to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendShort(short v) { |
| hash = HashUtils.hash32(v, hash); |
| } |
| |
| /** |
| * Append integer to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendInt(int v) { |
| hash = HashUtils.hash32(v, hash); |
| } |
| |
| /** |
| * Append long to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendLong(long v) { |
| hash = HashUtils.hash32(v, hash); |
| } |
| |
| /** |
| * Append float to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendFloat(float v) { |
| appendInt(Float.floatToRawIntBits(v)); |
| } |
| |
| /** |
| * Append double to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendDouble(double v) { |
| appendLong(Double.doubleToRawLongBits(v)); |
| } |
| |
| /** |
| * Append BigDecimal to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendDecimal(BigDecimal v) { |
| appendDouble(v.doubleValue()); |
| } |
| |
| /** |
| * Append BigInteger to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendNumber(BigInteger v) { |
| appendDouble(v.doubleValue()); |
| } |
| |
| /** |
| * Append UUID to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendUuid(UUID v) { |
| appendLong(v.getMostSignificantBits()); |
| appendLong(v.getLeastSignificantBits()); |
| } |
| |
| /** |
| * Append string value to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendString(String v) { |
| appendBytes(v.getBytes(StandardCharsets.UTF_8)); |
| } |
| |
| /** |
| * Append byte array to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendBytes(byte[] v) { |
| hash = HashUtils.hash32(v, 0, v.length, hash); |
| } |
| |
| /** |
| * Append BitSet to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendBitmask(BitSet v) { |
| appendBytes(v.toByteArray()); |
| } |
| |
| /** |
| * Append LocalDate to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendDate(LocalDate v) { |
| appendLong(v.getYear()); |
| appendLong(v.getMonthValue()); |
| appendLong(v.getDayOfMonth()); |
| } |
| |
| /** |
| * Append LocalTime to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendTime(LocalTime v) { |
| appendLong(v.getHour()); |
| appendLong(v.getMinute()); |
| appendLong(v.getSecond()); |
| appendLong(v.getNano()); |
| } |
| |
| /** |
| * Append LocalDateTime to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendDateTime(LocalDateTime v) { |
| appendDate(v.toLocalDate()); |
| appendTime(v.toLocalTime()); |
| } |
| |
| /** |
| * Append Instant to hash calculation. |
| * |
| * @param v Value to update hash. |
| */ |
| public void appendTimestamp(Instant v) { |
| appendLong(v.getEpochSecond()); |
| appendLong(v.getNano()); |
| } |
| |
| /** |
| * Hash code calculated by previous appended values. |
| * |
| * @return Hash code calculated by appended values. |
| */ |
| public int hash() { |
| return hash; |
| } |
| |
| /** |
| * Reset hash code calculation. |
| */ |
| public void reset() { |
| hash = 0; |
| } |
| } |