本文整理汇总了Java中org.apache.hadoop.hbase.io.compress.Compression.decompress方法的典型用法代码示例。如果您正苦于以下问题：Java Compression.decompress方法的具体用法？Java Compression.decompress怎么用？Java Compression.decompress使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.io.compress.Compression的用法示例。
在下文中一共展示了Compression.decompress方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: prepareDecoding
import org.apache.hadoop.hbase.io.compress.Compression; //导入方法依赖的package包/类
@Override
public void prepareDecoding(int onDiskSizeWithoutHeader, int uncompressedSizeWithoutHeader,
ByteBuffer blockBufferWithoutHeader, byte[] onDiskBlock, int offset) throws IOException {
InputStream in = new DataInputStream(new ByteArrayInputStream(onDiskBlock, offset,
onDiskSizeWithoutHeader));
Encryption.Context cryptoContext = fileContext.getEncryptionContext();
if (cryptoContext != Encryption.Context.NONE) {
Cipher cipher = cryptoContext.getCipher();
Decryptor decryptor = cipher.getDecryptor();
decryptor.setKey(cryptoContext.getKey());
// Encrypted block format:
// +--------------------------+
// | byte iv length |
// +--------------------------+
// | iv data ... |
// +--------------------------+
// | encrypted block data ... |
// +--------------------------+
int ivLength = in.read();
if (ivLength > 0) {
byte[] iv = new byte[ivLength];
IOUtils.readFully(in, iv);
decryptor.setIv(iv);
// All encrypted blocks will have a nonzero IV length. If we see an IV
// length of zero, this means the encoding context had 0 bytes of
// plaintext to encode.
decryptor.reset();
in = decryptor.createDecryptionStream(in);
}
onDiskSizeWithoutHeader -= Bytes.SIZEOF_BYTE + ivLength;
}
Compression.Algorithm compression = fileContext.getCompression();
if (compression != Compression.Algorithm.NONE) {
Compression.decompress(blockBufferWithoutHeader.array(),
blockBufferWithoutHeader.arrayOffset(), in, onDiskSizeWithoutHeader,
uncompressedSizeWithoutHeader, compression);
} else {
IOUtils.readFully(in, blockBufferWithoutHeader.array(),
blockBufferWithoutHeader.arrayOffset(), onDiskSizeWithoutHeader);
}
}