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add comment; use BLOCK_SIZE static import not blockSize 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/pforcodec_3892@1371011 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael McCandless 2012-08-08 23:02:58 +00:00
parent 1ff9383a84
commit 98ae806ba6
2 changed files with 7 additions and 4 deletions
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2
lucene/core/src/java/org/apache/lucene/codecs/block/BlockPostingsFormat.java
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@ -42,6 +42,8 @@ public final class BlockPostingsFormat extends PostingsFormat {
private final int minTermBlockSize;
private final int maxTermBlockSize;
// nocommit is this right?:
// NOTE: must be factor of .... 32?
public final static int BLOCK_SIZE = 128;
public BlockPostingsFormat() {

9
lucene/core/src/java/org/apache/lucene/codecs/block/ForUtil.java
View File

@ -18,6 +18,8 @@ package org.apache.lucene.codecs.block;
import java.nio.IntBuffer;
import static org.apache.lucene.codecs.block.BlockPostingsFormat.BLOCK_SIZE;
/**
* Encode all values in normal area with fixed bit width,
* which is determined by the max value in this block.
@ -31,8 +33,6 @@ public final class ForUtil {
0x01ffffff, 0x03ffffff, 0x07ffffff, 0x0fffffff, 0x1fffffff, 0x3fffffff,
0x7fffffff, 0xffffffff};
final static int blockSize = BlockPostingsFormat.BLOCK_SIZE;
/** Compress given int[] into Integer buffer, with For format
*
* @param data uncompressed data
@ -45,7 +45,7 @@ public final class ForUtil {
return compressDuplicateBlock(data, intBuffer);
}
for (int i=0; i<blockSize; ++i) {
for (int i=0; i<BLOCK_SIZE; ++i) {
assert data[i] >= 0;
encodeNormalValue(intBuffer, i, data[i], numBits);
}
@ -170,6 +170,7 @@ public final class ForUtil {
* Expert: get compressed block size(in byte)
*/
static int getEncodedSize(int numBits) {
return numBits == 0 ? 4 : numBits*blockSize/8;
// NOTE: works only because BLOCK_SIZE is 0 mod 8:
return numBits == 0 ? 4 : numBits*BLOCK_SIZE/8;
}
}