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java.lang.Object org.apache.lucene.index.NumericDocValues org.apache.lucene.util.LongValues org.apache.lucene.util.packed.AppendingPackedLongBuffer
public final class AppendingPackedLongBuffer
Utility class to buffer a list of signed longs in memory. This class only supports appending and is optimized for non-negative numbers with a uniform distribution over a fixed (limited) range
Field Summary |
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Fields inherited from class org.apache.lucene.index.NumericDocValues |
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EMPTY |
Constructor Summary | |
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AppendingPackedLongBuffer()
Create an AppendingPackedLongBuffer with initialPageCount=16,
pageSize=1024 and acceptableOverheadRatio=PackedInts.DEFAULT |
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AppendingPackedLongBuffer(float acceptableOverheadRatio)
Create an AppendingPackedLongBuffer with initialPageCount=16,
pageSize=1024 |
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AppendingPackedLongBuffer(int initialPageCount,
int pageSize,
float acceptableOverheadRatio)
AppendingPackedLongBuffer |
Method Summary | |
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void |
add(long l)
Append a value to this buffer. |
void |
freeze()
Pack all pending values in this buffer. |
long |
get(long index)
Get value at index . |
int |
get(long index,
long[] arr,
int off,
int len)
Bulk get: read at least one and at most len longs starting
from index into arr[off:off+len] and return
the actual number of values that have been read. |
org.apache.lucene.util.packed.AbstractAppendingLongBuffer.Iterator |
iterator()
Return an iterator over the values of this buffer. |
long |
ramBytesUsed()
Return the number of bytes used by this instance. |
long |
size()
Get the number of values that have been added to the buffer. |
Methods inherited from class org.apache.lucene.util.LongValues |
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get |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AppendingPackedLongBuffer(int initialPageCount, int pageSize, float acceptableOverheadRatio)
AppendingPackedLongBuffer
initialPageCount
- the initial number of pagespageSize
- the size of a single pageacceptableOverheadRatio
- an acceptable overhead ratio per valuepublic AppendingPackedLongBuffer()
AppendingPackedLongBuffer
with initialPageCount=16,
pageSize=1024 and acceptableOverheadRatio=PackedInts.DEFAULT
public AppendingPackedLongBuffer(float acceptableOverheadRatio)
AppendingPackedLongBuffer
with initialPageCount=16,
pageSize=1024
Method Detail |
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public final long size()
public final void add(long l)
public final long get(long index)
LongValues
index
.
get
in class LongValues
public final int get(long index, long[] arr, int off, int len)
len
longs starting
from index
into arr[off:off+len]
and return
the actual number of values that have been read.
public org.apache.lucene.util.packed.AbstractAppendingLongBuffer.Iterator iterator()
public long ramBytesUsed()
public void freeze()
add(long)
will fail.
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