com.google.common.hash.HashCode.getBytesInternal()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中com.google.common.hash.HashCode.getBytesInternal()方法的一些代码示例,展示了HashCode.getBytesInternal()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。HashCode.getBytesInternal()方法的具体详情如下:
包路径:com.google.common.hash.HashCode
类名称:HashCode
方法名:getBytesInternal

HashCode.getBytesInternal介绍

[英]Returns a mutable view of the underlying bytes for the given HashCode if it is a byte-based hashcode. Otherwise it returns HashCode#asBytes. Do not mutate this array or else you will break the immutability contract of HashCode.
[中]如果给定哈希代码是基于字节的哈希代码,则返回其基础字节的可变视图。否则返回HashCode#asBytes。不要改变这个数组,否则你会破坏HashCode的不变性契约。

代码示例

代码示例来源:origin: google/guava

@Override
boolean equalsSameBits(HashCode that) {
 // We don't use MessageDigest.isEqual() here because its contract does not guarantee
 // constant-time evaluation (no short-circuiting).
 if (this.bytes.length != that.getBytesInternal().length) {
  return false;
 }
 boolean areEqual = true;
 for (int i = 0; i < this.bytes.length; i++) {
  areEqual &= (this.bytes[i] == that.getBytesInternal()[i]);
 }
 return areEqual;
}

代码示例来源:origin: google/j2objc

@Override
boolean equalsSameBits(HashCode that) {
 // We don't use MessageDigest.isEqual() here because its contract does not guarantee
 // constant-time evaluation (no short-circuiting).
 if (this.bytes.length != that.getBytesInternal().length) {
  return false;
 }
 boolean areEqual = true;
 for (int i = 0; i < this.bytes.length; i++) {
  areEqual &= (this.bytes[i] == that.getBytesInternal()[i]);
 }
 return areEqual;
}

代码示例来源:origin: wildfly/wildfly

@Override
boolean equalsSameBits(HashCode that) {
 // We don't use MessageDigest.isEqual() here because its contract does not guarantee
 // constant-time evaluation (no short-circuiting).
 if (this.bytes.length != that.getBytesInternal().length) {
  return false;
 }
 boolean areEqual = true;
 for (int i = 0; i < this.bytes.length; i++) {
  areEqual &= (this.bytes[i] == that.getBytesInternal()[i]);
 }
 return areEqual;
}

代码示例来源:origin: google/guava

/**
 * Returns a string containing each byte of {@link #asBytes}, in order, as a two-digit unsigned
 * hexadecimal number in lower case.
 *
 * <p>Note that if the output is considered to be a single hexadecimal number, this hash code's
 * bytes are the <i>big-endian</i> representation of that number. This may be surprising since
 * everything else in the hashing API uniformly treats multibyte values as little-endian. But this
 * format conveniently matches that of utilities such as the UNIX {@code md5sum} command.
 *
 * <p>To create a {@code HashCode} from its string representation, see {@link #fromString}.
 */
@Override
public final String toString() {
 byte[] bytes = getBytesInternal();
 StringBuilder sb = new StringBuilder(2 * bytes.length);
 for (byte b : bytes) {
  sb.append(hexDigits[(b >> 4) & 0xf]).append(hexDigits[b & 0xf]);
 }
 return sb.toString();
}

代码示例来源:origin: google/j2objc

/**
 * Returns a string containing each byte of {@link #asBytes}, in order, as a two-digit unsigned
 * hexadecimal number in lower case.
 *
 * <p>Note that if the output is considered to be a single hexadecimal number, this hash code's
 * bytes are the <i>big-endian</i> representation of that number. This may be surprising since
 * everything else in the hashing API uniformly treats multibyte values as little-endian. But this
 * format conveniently matches that of utilities such as the UNIX {@code md5sum} command.
 *
 * <p>To create a {@code HashCode} from its string representation, see {@link #fromString}.
 */
@Override
public final String toString() {
 byte[] bytes = getBytesInternal();
 StringBuilder sb = new StringBuilder(2 * bytes.length);
 for (byte b : bytes) {
  sb.append(hexDigits[(b >> 4) & 0xf]).append(hexDigits[b & 0xf]);
 }
 return sb.toString();
}

代码示例来源:origin: wildfly/wildfly

/**
 * Returns a string containing each byte of {@link #asBytes}, in order, as a two-digit unsigned
 * hexadecimal number in lower case.
 *
 * <p>Note that if the output is considered to be a single hexadecimal number, this hash code's
 * bytes are the <i>big-endian</i> representation of that number. This may be surprising since
 * everything else in the hashing API uniformly treats multibyte values as little-endian. But this
 * format conveniently matches that of utilities such as the UNIX {@code md5sum} command.
 *
 * <p>To create a {@code HashCode} from its string representation, see {@link #fromString}.
 */
@Override
public final String toString() {
 byte[] bytes = getBytesInternal();
 StringBuilder sb = new StringBuilder(2 * bytes.length);
 for (byte b : bytes) {
  sb.append(hexDigits[(b >> 4) & 0xf]).append(hexDigits[b & 0xf]);
 }
 return sb.toString();
}

代码示例来源:origin: google/guava

/**
 * Returns a "Java hash code" for this {@code HashCode} instance; this is well-defined (so, for
 * example, you can safely put {@code HashCode} instances into a {@code HashSet}) but is otherwise
 * probably not what you want to use.
 */
@Override
public final int hashCode() {
 // If we have at least 4 bytes (32 bits), just take the first 4 bytes. Since this is
 // already a (presumably) high-quality hash code, any four bytes of it will do.
 if (bits() >= 32) {
  return asInt();
 }
 // If we have less than 4 bytes, use them all.
 byte[] bytes = getBytesInternal();
 int val = (bytes[0] & 0xFF);
 for (int i = 1; i < bytes.length; i++) {
  val |= ((bytes[i] & 0xFF) << (i * 8));
 }
 return val;
}

代码示例来源:origin: google/j2objc

/**
 * Returns a "Java hash code" for this {@code HashCode} instance; this is well-defined (so, for
 * example, you can safely put {@code HashCode} instances into a {@code HashSet}) but is otherwise
 * probably not what you want to use.
 */
@Override
public final int hashCode() {
 // If we have at least 4 bytes (32 bits), just take the first 4 bytes. Since this is
 // already a (presumably) high-quality hash code, any four bytes of it will do.
 if (bits() >= 32) {
  return asInt();
 }
 // If we have less than 4 bytes, use them all.
 byte[] bytes = getBytesInternal();
 int val = (bytes[0] & 0xFF);
 for (int i = 1; i < bytes.length; i++) {
  val |= ((bytes[i] & 0xFF) << (i * 8));
 }
 return val;
}

代码示例来源:origin: wildfly/wildfly

/**
 * Returns a "Java hash code" for this {@code HashCode} instance; this is well-defined (so, for
 * example, you can safely put {@code HashCode} instances into a {@code HashSet}) but is otherwise
 * probably not what you want to use.
 */
@Override
public final int hashCode() {
 // If we have at least 4 bytes (32 bits), just take the first 4 bytes. Since this is
 // already a (presumably) high-quality hash code, any four bytes of it will do.
 if (bits() >= 32) {
  return asInt();
 }
 // If we have less than 4 bytes, use them all.
 byte[] bytes = getBytesInternal();
 int val = (bytes[0] & 0xFF);
 for (int i = 1; i < bytes.length; i++) {
  val |= ((bytes[i] & 0xFF) << (i * 8));
 }
 return val;
}

代码示例来源:origin: google/guava

@Override
public <T> boolean mightContain(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  if (!bits.get((combinedHash & Long.MAX_VALUE) % bitSize)) {
   return false;
  }
  combinedHash += hash2;
 }
 return true;
}

代码示例来源:origin: google/guava

@Override
public <T> boolean put(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 boolean bitsChanged = false;
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  bitsChanged |= bits.set((combinedHash & Long.MAX_VALUE) % bitSize);
  combinedHash += hash2;
 }
 return bitsChanged;
}

代码示例来源:origin: google/guava

public void testGetBytesInternal_noCloneOccurs() {
 byte[] bytes = new byte[] {(byte) 0xcd, (byte) 0xab, (byte) 0x00, (byte) 0x00};
 HashCode hashCode = HashCode.fromBytes(bytes);
 assertEquals(0x0000abcd, hashCode.asInt());
 assertEquals("cdab0000", hashCode.toString());
 hashCode.getBytesInternal()[0] = (byte) 0x00;
 assertEquals(0x0000ab00, hashCode.asInt());
 assertEquals("00ab0000", hashCode.toString());
}

代码示例来源:origin: google/j2objc

@Override
public <T> boolean put(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 boolean bitsChanged = false;
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  bitsChanged |= bits.set((combinedHash & Long.MAX_VALUE) % bitSize);
  combinedHash += hash2;
 }
 return bitsChanged;
}

代码示例来源:origin: google/j2objc

@Override
public <T> boolean mightContain(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  if (!bits.get((combinedHash & Long.MAX_VALUE) % bitSize)) {
   return false;
  }
  combinedHash += hash2;
 }
 return true;
}

代码示例来源:origin: wildfly/wildfly

@Override
public <T> boolean put(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 boolean bitsChanged = false;
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  bitsChanged |= bits.set((combinedHash & Long.MAX_VALUE) % bitSize);
  combinedHash += hash2;
 }
 return bitsChanged;
}

代码示例来源:origin: wildfly/wildfly

@Override
public <T> boolean mightContain(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  if (!bits.get((combinedHash & Long.MAX_VALUE) % bitSize)) {
   return false;
  }
  combinedHash += hash2;
 }
 return true;
}

代码示例来源:origin: org.kill-bill.billing/killbill-platform-osgi-bundles-logger

@Override
boolean equalsSameBits(HashCode that) {
 // We don't use MessageDigest.isEqual() here because its contract does not guarantee
 // constant-time evaluation (no short-circuiting).
 if (this.bytes.length != that.getBytesInternal().length) {
  return false;
 }
 boolean areEqual = true;
 for (int i = 0; i < this.bytes.length; i++) {
  areEqual &= (this.bytes[i] == that.getBytesInternal()[i]);
 }
 return areEqual;
}

代码示例来源:origin: org.jboss.eap/wildfly-client-all

@Override
boolean equalsSameBits(HashCode that) {
 // We don't use MessageDigest.isEqual() here because its contract does not guarantee
 // constant-time evaluation (no short-circuiting).
 if (this.bytes.length != that.getBytesInternal().length) {
  return false;
 }
 boolean areEqual = true;
 for (int i = 0; i < this.bytes.length; i++) {
  areEqual &= (this.bytes[i] == that.getBytesInternal()[i]);
 }
 return areEqual;
}

代码示例来源:origin: org.kill-bill.billing/killbill-platform-osgi-bundles-logger

@Override
public <T> boolean put(
  T object, Funnel<? super T> funnel, int numHashFunctions, LockFreeBitArray bits) {
 long bitSize = bits.bitSize();
 byte[] bytes = Hashing.murmur3_128().hashObject(object, funnel).getBytesInternal();
 long hash1 = lowerEight(bytes);
 long hash2 = upperEight(bytes);
 boolean bitsChanged = false;
 long combinedHash = hash1;
 for (int i = 0; i < numHashFunctions; i++) {
  // Make the combined hash positive and indexable
  bitsChanged |= bits.set((combinedHash & Long.MAX_VALUE) % bitSize);
  combinedHash += hash2;
 }
 return bitsChanged;
}

代码示例来源:origin: com.google.guava/guava-tests

public void testGetBytesInternal_noCloneOccurs() {
 byte[] bytes = new byte[] { (byte) 0xcd, (byte) 0xab, (byte) 0x00, (byte) 0x00 };
 HashCode hashCode = HashCode.fromBytes(bytes);
 assertEquals(0x0000abcd, hashCode.asInt());
 assertEquals("cdab0000", hashCode.toString());
 hashCode.getBytesInternal()[0] = (byte) 0x00;
 assertEquals(0x0000ab00, hashCode.asInt());
 assertEquals("00ab0000", hashCode.toString());
}

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