edu.berkeley.cs186.database.databox

Class DataBox

java.lang.Object

edu.berkeley.cs186.database.databox.DataBox

All Implemented Interfaces:

Comparable

Direct Known Subclasses:

BoolDataBox, FloatDataBox, IntDataBox, StringDataBox

public abstract class DataBox
extends Object
implements Comparable

Abstract DataBox for all database primitives Currently supported: integers, booleans, floats, fixed-length strings. DataBoxes are also comparable allowing comparisons or sorting. Provides default functionality for all DataBox subclasses by assuming that the contained value is not of the type specified.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataBox.Types An enum with the current supported types.

Constructor Summary

Constructors

Constructor and Description
DataBox()
DataBox(boolean b)
DataBox(byte[] buf)
DataBox(float f)
DataBox(int i)
DataBox(String s, int len)

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Object obj)
boolean	getBool()
byte[]	getBytes() Returns a byte array with the data contained by this DataBox.
float	getFloat()
int	getInt()
int	getSize() Returns the fixed size of this DataBox.
String	getString()
void	setBool(boolean b)
void	setFloat(float f)
void	setInt(int i)
void	setString(String s, int len)
String	toString()
DataBox.Types	type() Returns the type of the DataBox.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataBox

public DataBox()
        throws DataBoxException

Throws:

DataBoxException

DataBox

public DataBox(boolean b)
        throws DataBoxException

Throws:

DataBoxException

DataBox

public DataBox(int i)
        throws DataBoxException

Throws:

DataBoxException

DataBox

public DataBox(float f)
        throws DataBoxException

Throws:

DataBoxException

DataBox

public DataBox(String s,
       int len)
        throws DataBoxException

Throws:

DataBoxException

DataBox

public DataBox(byte[] buf)
        throws DataBoxException

Throws:

DataBoxException

Method Detail

getBool

public boolean getBool()
                throws DataBoxException

Throws:

DataBoxException

getInt

public int getInt()
           throws DataBoxException

Throws:

DataBoxException

getFloat

public float getFloat()
               throws DataBoxException

Throws:

DataBoxException

getString

public String getString()
                 throws DataBoxException

Throws:

DataBoxException

setBool

public void setBool(boolean b)
             throws DataBoxException

Throws:

DataBoxException

setInt

public void setInt(int i)
            throws DataBoxException

Throws:

DataBoxException

setFloat

public void setFloat(float f)
              throws DataBoxException

Throws:

DataBoxException

setString

public void setString(String s,
             int len)
               throws DataBoxException

Throws:

DataBoxException

type

public DataBox.Types type()
                   throws DataBoxException

Returns the type of the DataBox.

Returns:

the type from the Types enum

Throws:

DataBoxException

getBytes

public byte[] getBytes()
                throws DataBoxException

Returns a byte array with the data contained by this DataBox.

Returns:

a byte array

Throws:

DataBoxException

getSize

public int getSize()
            throws DataBoxException

Returns the fixed size of this DataBox.

Returns:

the size of the DataBox

Throws:

DataBoxException

compareTo

public int compareTo(Object obj)
              throws DataBoxException

Specified by:

compareTo in interface Comparable

Throws:

DataBoxException

toString

public String toString()
                throws DataBoxException

Overrides:

toString in class Object

Throws:

DataBoxException