com.infairy.smarthome.tools

Class DBTools

java.lang.Object

com.infairy.smarthome.tools.DBTools

public class DBTools
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	APPENDData
static boolean	AppendHashObject
static java.lang.String	DBPath
static java.lang.String	DONOTHING
static boolean	NewHashObject
static java.lang.String	NEWTable

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	getDB(java.lang.Object obj, java.lang.String TN)
static java.util.Hashtable[]	readHashObject(java.lang.Object obj, java.lang.String filename) read serial object of Hashtable
static java.lang.Object[]	readObject(java.lang.Object obj, java.lang.String filename)
static boolean	removeHashObject(java.lang.Object obj, java.lang.String filename) remove database by the assigned filename
static boolean	removeHashObject(java.lang.Object obj, java.lang.String filename, java.lang.Object[] condition) Remove data from the assigned database by condition, ex.
static boolean	removeHashObject(java.lang.Object obj, java.lang.String filename, java.lang.String compareItem, java.lang.String compareValue) remove serial object from file by assigned item and value
static boolean	removeObject(java.lang.Object obj, java.lang.String filename)
static java.lang.String	rmDB(java.lang.Object obj, java.lang.String TN)
static void	saveHashObject(java.lang.Object obj, java.lang.String filename, java.util.Hashtable data, boolean isAppend) Save serial object of Hashtable
static void	saveObject(java.lang.Object obj, java.lang.String filename, java.lang.Object data, boolean isAppend)
static java.lang.String	setDB(java.lang.Object obj, java.lang.String TN, java.lang.String Type, java.lang.String Data)

Methods inherited from class java.lang.Object

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

Field Detail

APPENDData

public static final java.lang.String APPENDData

See Also:

Constant Field Values

AppendHashObject

public static final boolean AppendHashObject

See Also:

Constant Field Values

DBPath

public static java.lang.String DBPath

DONOTHING

public static final java.lang.String DONOTHING

See Also:

Constant Field Values

NewHashObject

public static final boolean NewHashObject

See Also:

Constant Field Values

NEWTable

public static final java.lang.String NEWTable

See Also:

Constant Field Values

Method Detail

getDB

public static java.lang.String getDB(java.lang.Object obj,
                     java.lang.String TN)

Parameters:

obj - Create Table's object

TN - Table Name

Returns:

Success: if the operate was success, Fail: operate failed.

readHashObject

public static java.util.Hashtable[] readHashObject(java.lang.Object obj,
                                   java.lang.String filename)

read serial object of Hashtable

Parameters:

obj - Create Table's object

filename - filename

Returns:

Hashtable array

readObject

public static java.lang.Object[] readObject(java.lang.Object obj,
                            java.lang.String filename)

removeHashObject

public static boolean removeHashObject(java.lang.Object obj,
                       java.lang.String filename)

remove database by the assigned filename

Parameters:

obj -

filename -

Returns:

removeHashObject

public static boolean removeHashObject(java.lang.Object obj,
                       java.lang.String filename,
                       java.lang.Object[] condition)

Remove data from the assigned database by condition, ex. Object[] condition=new Object[]{new String[]{"name", "cychang"}, new String[]{"age","50"}}; removeHashObject(this, "mydata", condition);

Parameters:

obj -

filename -

condition -

Returns:

removeHashObject

public static boolean removeHashObject(java.lang.Object obj,
                       java.lang.String filename,
                       java.lang.String compareItem,
                       java.lang.String compareValue)

remove serial object from file by assigned item and value

Parameters:

obj - Create Table's object

filename - filename

compareItem - compared item

compareValue - compared value

Returns:

true:success removed false: fail to remove object (file not existed or can not get item's value)

removeObject

public static boolean removeObject(java.lang.Object obj,
                   java.lang.String filename)

rmDB

public static java.lang.String rmDB(java.lang.Object obj,
                    java.lang.String TN)

Parameters:

obj - Create Table's Object

TN - Table Name

Returns:

Success: if the opeation was success, Fail: opeate failed.

saveHashObject

public static void saveHashObject(java.lang.Object obj,
                  java.lang.String filename,
                  java.util.Hashtable data,
                  boolean isAppend)

Save serial object of Hashtable

Parameters:

obj - Create Table's object

filename - filename

data - Hashtable data

isAppend - true:append into existed file, false: new file table

saveObject

public static void saveObject(java.lang.Object obj,
              java.lang.String filename,
              java.lang.Object data,
              boolean isAppend)

setDB

public static java.lang.String setDB(java.lang.Object obj,
                     java.lang.String TN,
                     java.lang.String Type,
                     java.lang.String Data)

Parameters:

obj - Create Table's object

TN - Table Name

Type - refer to {APPENDData:"A", NEWTable:"N"} APPENDData:append data into table name, NEWTable: new table name and clear all existed table

Data - Data String

Returns:

Success: if the operation was success, Fail: operate failed.