Package org.terrier.utility

This package includes classes that are used in various part of the Terrier Platform.

See: Description

Interface Summary

Interface	Description
ApplicationSetup.TerrierApplicationPlugin	Interface for plugins.
Files.FSCapability	constants declaring which capabilites a file system has
KillHandler.Killable	Interface denoting an object which can be killed by the KillHandler
MemoryChecker	Interface for various implementation which are used to determine if memory has been exhausted.

Class Summary

Class	Description
ApplicationSetup	This class retrieves and provides access to all the constants and parameters for the system.
ArrayUtils	Handy methods for resizing arrays, and other handy array methods This is a fresh implementation of the capacity methods, without the use of any prelicensed code.
Distance	Class containing useful utility methods for counting the number of occurrences of two terms within windows, etc.
FieldScore	A class for modifying the retrieval scores of documents, according to whether the query terms appear to any of the fields, or tags specified by the property FieldTags.process.
Files	Utililty class for opening readers/writers and input/output streams to files.
Files.PathTransformation	a search regex and a replacement for path transformations
FixedSizeInputStream	An inputstream which only reads a fixed length of a parent input stream.
HeapSort	An implementation of the heap sort algorithm as described in Cormen et al.
KillHandler	Utility class for when releasing resources when the runtime system is shutting down.
LookAheadReader	Implements a Reader, that encapsulates another stream, but only upto the point that a pre-defined end marker in the stream is identified.
LookAheadStream	Implements an InputStream, that encapsulates another stream, but only upto the point that a pre-defined end marker in the stream is identified.
LookAheadStreamCaseInsensitive	Version of LookAheadStream that is case-insensitive.
ProcessInputStream	Reads a stream from a process
Rounding	A class for performing the rounding of a number in various ways for various applications.
RuntimeMemoryChecker	A memory checker that uses the Java Runtime instance to check the amount of available memory.
SimpleJettyHTTPServer	Class to make a simple Jetty servlet.
StaTools	This class implements a series of basic statistical functions.
StringComparator	Compares two strings which may have fixed length fields separated with a non word character (eg a dash), and a last field which corresponds to an integer.
StringTools	This class implements useful string functions
TagSet	A class that models a set of tags to process (white list), a set of tags to skip (black list), a tag that is used as a document delimiter, and a tag the contents of which are used as a unique identifier.
TermCodes	This class is used for assigning codes to terms as we index a document collection.
TerrierTimer	This class implements a timer.
UnitUtils
Wrapper<T>	Generic mutatble Wrapper class - allows non-mutatable class to be wrapped in mutatable classes, and re-accessed later.
Wrapper.IntObjectWrapper<K>	IntObjectWrapper class

Enum Summary

Enum	Description
StringTools.ESCAPE	Defines escape encodings that are supported.

Package org.terrier.utility Description

This package includes classes that are used in various part of the Terrier Platform.