Quadcap Embeddable Database

com.quadcap.sql.Key Class Reference

Inheritance diagram for com.quadcap.sql.Key:

List of all members.

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Detailed Description

Micro-optimized (-;) key serialization and comparison.

This class is designed to eliminate copies and allocations during key comparison and serialization operations.

Author:

Stan Bailes

Definition at line 69 of file Key.java.

Public Member Functions
	Key (int cnt)
	Key (boolean[] asc)
boolean	compareNulls (byte[] a, byte[] b)
	Null comparison for GROUP BY.
int	compare (byte[] a, byte[] b)
final int	compare (byte[] a, int aoff, int alen, byte[] b, int boff, int blen)
void	checkKey (byte[] buf, int off, int len)
int	getKeyLen (byte[] a, int aoff)
String	toString (byte[] key, int off, int xlen)
Static Public Member Functions
byte[]	makeKey (Tuple tuple, Row row, int[] map, long rowNum, boolean doRowNum) throws SQLException
byte[]	makeKey (Row row) throws SQLException
String	toStringHelper (byte[] key)
String	toStringHelper (byte[] key, int off, int xlen)
void	test1 () throws IOException
byte[]	makeRandomKey () throws IOException
void	main (String[] args)
Static Public Attributes
final int	COMPOUND = KeyStream.COMPOUND
final int	INTEGER = KeyStream.INTEGER
final int	STRING = KeyStream.STRING
final int	NULL = KeyStream.NULL
Package Functions
final int	compare2 (byte[] a, int aoff, int alen, byte[] b, int boff, int blen)
Package Attributes
boolean[]	asc
Static Package Attributes
final boolean	paranoid = false
java.util.Random	random = new java.util.Random(666)

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Constructor & Destructor Documentation

com.quadcap.sql.Key.Key (  int  cnt  )

Definition at line 76 of file Key.java. References com.quadcap.sql.Key.asc.

com.quadcap.sql.Key.Key (  boolean[]  asc  )

Definition at line 81 of file Key.java.

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Member Function Documentation

void com.quadcap.sql.Key.checkKey (  byte[]  buf, int  off, int  len )

Definition at line 208 of file Key.java. References com.quadcap.sql.Key.checkKey(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.toString(). Referenced by com.quadcap.sql.Key.checkKey(), com.quadcap.sql.Key.compare(), and com.quadcap.sql.Key.makeKey().

final int com.quadcap.sql.Key.compare (  byte[]  a, int  aoff, int  alen, byte[]  b, int  boff, int  blen )

Definition at line 179 of file Key.java. References com.quadcap.sql.Key.asc, com.quadcap.sql.Key.checkKey(), com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.paranoid, and com.quadcap.sql.Key.toString().

int com.quadcap.sql.Key.compare (  byte[]  a, byte[]  b )

Definition at line 174 of file Key.java. References com.quadcap.sql.Key.compare(). Referenced by com.quadcap.sql.Key.compare(), com.quadcap.sql.Key.compareNulls(), and com.quadcap.sql.GroupByCursor.nextRow().

final int com.quadcap.sql.Key.compare2 (  byte[]  a, int  aoff, int  alen, byte[]  b, int  boff, int  blen )  [package]

Definition at line 222 of file Key.java. References com.quadcap.sql.Key.asc, com.quadcap.sql.Key.COMPOUND, com.quadcap.sql.Key.INTEGER, com.quadcap.sql.Key.NULL, and com.quadcap.sql.Key.STRING. Referenced by com.quadcap.sql.Key.compare().

boolean com.quadcap.sql.Key.compareNulls (  byte[]  a, byte[]  b )

Null comparison for GROUP BY. Definition at line 164 of file Key.java. References com.quadcap.sql.Key.compare(), and com.quadcap.sql.Key.compareNulls(). Referenced by com.quadcap.sql.Key.compareNulls().

int com.quadcap.sql.Key.getKeyLen (  byte[]  a, int  aoff )

Definition at line 385 of file Key.java. References com.quadcap.sql.Key.asc, com.quadcap.sql.Key.COMPOUND, com.quadcap.sql.Key.getKeyLen(), com.quadcap.sql.Key.INTEGER, com.quadcap.sql.Key.NULL, and com.quadcap.sql.Key.STRING. Referenced by com.quadcap.sql.Key.checkKey(), and com.quadcap.sql.Key.getKeyLen().

void com.quadcap.sql.Key.main (  String[]  args  )  [static]

Definition at line 510 of file Key.java. References com.quadcap.sql.Key.main(), and com.quadcap.sql.Key.test1(). Referenced by com.quadcap.sql.Key.main().

byte [] com.quadcap.sql.Key.makeKey (  Row  row  )  throws SQLException [static]

Definition at line 157 of file Key.java.

byte [] com.quadcap.sql.Key.makeKey (  Tuple  tuple, Row  row, int[]  map, long  rowNum, boolean  doRowNum )  throws SQLException [static]

Definition at line 85 of file Key.java. References com.quadcap.sql.Key.checkKey(), com.quadcap.sql.types.Type.convert(), com.quadcap.sql.Column.getType(), com.quadcap.sql.Key.makeKey(), com.quadcap.sql.Key.paranoid, com.quadcap.sql.types.Value.serializeKey(), com.quadcap.sql.Key.toString(), and com.quadcap.sql.types.KeyStream.writeLong(). Referenced by com.quadcap.sql.Key.makeKey().

byte [] com.quadcap.sql.Key.makeRandomKey (   )  throws IOException [static]

Definition at line 498 of file Key.java. References com.quadcap.sql.Key.random, and com.quadcap.sql.types.KeyStream.writeChars(). Referenced by com.quadcap.sql.Key.test1().

void com.quadcap.sql.Key.test1 (   )  throws IOException [static]

Definition at line 479 of file Key.java. References com.quadcap.sql.Key.makeRandomKey(). Referenced by com.quadcap.sql.Key.main().

String com.quadcap.sql.Key.toString (  byte[]  key, int  off, int  xlen )

Definition at line 419 of file Key.java. References com.quadcap.sql.Key.toString(). Referenced by com.quadcap.sql.Key.checkKey(), com.quadcap.sql.Key.compare(), com.quadcap.sql.Key.makeKey(), and com.quadcap.sql.Key.toString().

String com.quadcap.sql.Key.toStringHelper (  byte[]  key, int  off, int  xlen )  [static]

Definition at line 423 of file Key.java. References com.quadcap.sql.Key.COMPOUND, com.quadcap.sql.Key.INTEGER, com.quadcap.sql.Key.NULL, and com.quadcap.sql.Key.STRING.

String com.quadcap.sql.Key.toStringHelper (  byte[]  key  )  [static]

Definition at line 415 of file Key.java. References com.quadcap.sql.Key.toStringHelper(). Referenced by com.quadcap.sql.Key.toStringHelper().

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Member Data Documentation

boolean [] com.quadcap.sql.Key.asc [package]

Definition at line 74 of file Key.java. Referenced by com.quadcap.sql.Key.compare(), com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.Key().

final int com.quadcap.sql.Key.COMPOUND = KeyStream.COMPOUND [static]

Definition at line 169 of file Key.java. Referenced by com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.toStringHelper().

final int com.quadcap.sql.Key.INTEGER = KeyStream.INTEGER [static]

Definition at line 170 of file Key.java. Referenced by com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.toStringHelper().

final int com.quadcap.sql.Key.NULL = KeyStream.NULL [static]

Definition at line 172 of file Key.java. Referenced by com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.toStringHelper().

final boolean com.quadcap.sql.Key.paranoid = false [static, package]

Definition at line 71 of file Key.java. Referenced by com.quadcap.sql.Key.compare(), and com.quadcap.sql.Key.makeKey().

java.util.Random com.quadcap.sql.Key.random = new java.util.Random(666) [static, package]

Definition at line 496 of file Key.java. Referenced by com.quadcap.sql.Key.makeRandomKey().

final int com.quadcap.sql.Key.STRING = KeyStream.STRING [static]

Definition at line 171 of file Key.java. Referenced by com.quadcap.sql.Key.compare2(), com.quadcap.sql.Key.getKeyLen(), and com.quadcap.sql.Key.toStringHelper().