com.sun.labs.minion.indexer.partition
Class DiskPartitionFactory

java.lang.Object
  com.sun.labs.minion.indexer.partition.DiskPartitionFactory

All Implemented Interfaces:

com.sun.labs.util.props.Component, com.sun.labs.util.props.Configurable

Direct Known Subclasses:

ClassifierPartitionFactory, ClusterPartitionFactory, InvFilePartitionFactory

public class DiskPartitionFactory
extends java.lang.Object
implements com.sun.labs.util.props.Configurable

A factory class for generating memory partitions and disk partitions during indexing and querying.

Field Summary

protected boolean	cacheVectorLengths
protected DictionaryFactory	documentDictFactory The document dictionary factory.
protected DictionaryFactory	mainDictFactory The main dictionary factory.
protected int	mergeBuffSize The size of the merge buffer.
static java.lang.String	PROP_CACHE_VECTOR_LENGTHS
static java.lang.String	PROP_DOCUMENT_DICT_FACTORY A property for the factory that we'll use to create the document dictionaries for partitions.
static java.lang.String	PROP_MAIN_DICT_FACTORY A property for the factory that we'll use to create the main dictionary.
static java.lang.String	PROP_MERGE_BUFF_SIZE A property for the size of the in-memory buffer to use when merging partitions.
static java.lang.String	PROP_TERM_CACHE_SIZE
protected int	termCacheSize

Constructor Summary

DiskPartitionFactory()
Creates a new instance of DiskPartitionFactory

Method Summary

DiskPartition	getDiskPartition(int number, PartitionManager m) Gets a disk partition with the given number, managed by the given manager.
void	newProperties(com.sun.labs.util.props.PropertySheet ps)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PROP_MAIN_DICT_FACTORY

@ConfigComponent(type=DictionaryFactory.class)
public static final java.lang.String PROP_MAIN_DICT_FACTORY

A property for the factory that we'll use to create the main dictionary.

See Also:

Constant Field Values

mainDictFactory

protected DictionaryFactory mainDictFactory

The main dictionary factory.

PROP_DOCUMENT_DICT_FACTORY

@ConfigComponent(type=DictionaryFactory.class)
public static final java.lang.String PROP_DOCUMENT_DICT_FACTORY

A property for the factory that we'll use to create the document dictionaries for partitions.

See Also:

Constant Field Values

documentDictFactory

protected DictionaryFactory documentDictFactory

The document dictionary factory.

PROP_MERGE_BUFF_SIZE

@ConfigInteger(defaultValue=1048576)
public static final java.lang.String PROP_MERGE_BUFF_SIZE

A property for the size of the in-memory buffer to use when merging partitions.

See Also:

Constant Field Values

mergeBuffSize

protected int mergeBuffSize

The size of the merge buffer.

PROP_CACHE_VECTOR_LENGTHS

@ConfigBoolean(defaultValue=false)
public static final java.lang.String PROP_CACHE_VECTOR_LENGTHS

See Also:

Constant Field Values

cacheVectorLengths

protected boolean cacheVectorLengths

PROP_TERM_CACHE_SIZE

@ConfigInteger(defaultValue=0)
public static final java.lang.String PROP_TERM_CACHE_SIZE

See Also:

Constant Field Values

termCacheSize

protected int termCacheSize

Constructor Detail

DiskPartitionFactory

public DiskPartitionFactory()

Creates a new instance of DiskPartitionFactory

Method Detail

newProperties

public void newProperties(com.sun.labs.util.props.PropertySheet ps)
                   throws com.sun.labs.util.props.PropertyException

Specified by:

newProperties in interface com.sun.labs.util.props.Configurable

Throws:

com.sun.labs.util.props.PropertyException

getDiskPartition

public DiskPartition getDiskPartition(int number,
                                      PartitionManager m)
                               throws java.io.IOException

Gets a disk partition with the given number, managed by the given manager.

Parameters:

number - the partition number that we want to get

m - the manager that will be managing the partition

Returns:

the partition with the given number

Throws:

java.io.IOException - if there is any error opening the partition