edu.umd.cloud9.util
Class SequenceFileUtils

java.lang.Object
  edu.umd.cloud9.util.SequenceFileUtils

public class SequenceFileUtils
extends Object

Class containing a number of utility methods for manipulating SequenceFiles.

Method Summary

static List<KeyValuePair<WritableComparable,Writable>>	readDirectory(Path path)
static List<KeyValuePair<WritableComparable,Writable>>	readDirectory(Path path, int max) Reads key-value pairs from a directory containing SequenceFiles.
static List<KeyValuePair<WritableComparable,Writable>>	readDirectory(String path)
static List<KeyValuePair<WritableComparable,Writable>>	readDirectory(String path, int max) Reads key-value pairs from a directory containing SequenceFiles.
static List<KeyValuePair<WritableComparable,Writable>>	readFile(Path path)
static List<KeyValuePair<WritableComparable,Writable>>	readFile(Path path, int max) Reads key-value pairs from a SequenceFile, up to a maximum number.
static List<KeyValuePair<WritableComparable,Writable>>	readFile(String path)
static List<KeyValuePair<WritableComparable,Writable>>	readFile(String path, int max) Reads key-value pairs from a SequenceFile, up to a maximum number.

Methods inherited from class java.lang.Object

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

Method Detail

readFile

public static List<KeyValuePair<WritableComparable,Writable>> readFile(String path)

readFile

public static List<KeyValuePair<WritableComparable,Writable>> readFile(Path path)

readFile

public static List<KeyValuePair<WritableComparable,Writable>> readFile(String path,
                                                                       int max)

Reads key-value pairs from a SequenceFile, up to a maximum number.

Parameters:

path - path to file (as a String)

max - maximum of key-value pairs to read

Returns:

list of key-value pairs

readFile

public static List<KeyValuePair<WritableComparable,Writable>> readFile(Path path,
                                                                       int max)

Reads key-value pairs from a SequenceFile, up to a maximum number.

Parameters:

path - path to file (as a Path)

max - maximum of key-value pairs to read

Returns:

list of key-value pairs

readDirectory

public static List<KeyValuePair<WritableComparable,Writable>> readDirectory(String path)

readDirectory

public static List<KeyValuePair<WritableComparable,Writable>> readDirectory(Path path)

readDirectory

public static List<KeyValuePair<WritableComparable,Writable>> readDirectory(String path,
                                                                            int max)

Reads key-value pairs from a directory containing SequenceFiles. A maximum number of key-value pairs is read from each SequenceFile.

Parameters:

path - path to directory (as a String)

max - maximum of key-value pairs to read per file

Returns:

list of key-value pairs

readDirectory

public static List<KeyValuePair<WritableComparable,Writable>> readDirectory(Path path,
                                                                            int max)

Reads key-value pairs from a directory containing SequenceFiles. A maximum number of key-value pairs is read from each SequenceFile.

Parameters:

path - path to directory (as a Path)

max - maximum of key-value pairs to read per file

Returns:

list of key-value pairs