com.ijchart.xychart.dataset
Class DefaultKeyValueDataset

java.lang.Object
  com.ijchart.xychart.dataset.AbstractDataset
      com.ijchart.xychart.dataset.DefaultKeyValueDataset

All Implemented Interfaces:

IDataset, IKeyValueDataset, IDatasetChangeListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener

public class DefaultKeyValueDataset
extends AbstractDataset
implements IKeyValueDataset, java.lang.Cloneable, java.io.Serializable

Title: IJChart

Description: a chart library for the Java(tm) platform.

接口IKeyValueDataset的缺省实现.内部数据存储使用List,所以本数集数据量不宜过大.

Copyright: Copyright (c) 2013

Company:

Version:

1.0

Author:

zhang feng min,shanghai china. Contract me by email.

See Also:

Serialized Form

Constructor Summary

DefaultKeyValueDataset()
没有参数的构造器.

DefaultKeyValueDataset(int initialCapacity)
指定集合初始大小的构造器.

Method Summary

void	addChartData(java.lang.Object key, IChartData value) 增加一个键值和数据对到集合中.
java.lang.Object	clone() 克隆本对象.
boolean	equals(java.lang.Object obj) 覆盖equals方法.
java.util.List	getAllKeys() 返回所有键值
java.util.List	getData() 返回数据集合.此集合是不可改变的.
IChartData	getDataByIndex(int index) 根据索引号取得数据值,如果索引超过范围则抛出异常.
IChartData	getDataByKey(java.lang.Object key) 根据键值对应的数据值.如果没有找到则返回null.
int	getDataSize() 返回键值的个数.
int	getKeyIndex(java.lang.Object key) 返回键值在所有键值中的索引.
int	hashCode() 计算hascode值.
boolean	isThisDataType(java.lang.Class c) 判断所有的数据值是否是类c.
void	removeAllChartData() 清空数据集.
void	removeChartDataByIndex(int index) 根据索引删除数据集对象.
int	removeChartDataByKey(java.lang.Object key) 根据键值删除数据集对象.
void	setDataByIndex(int index, IChartData data) 根据索引号改变数据值,如果索引超过范围则抛出异常.
boolean	setDataByKey(java.lang.Object key, IChartData data) 根据键值改变数据值.

Methods inherited from class com.ijchart.xychart.dataset.AbstractDataset

addChangeListener, datasetChanged, fireDatasetChanged, forceDataSetChanged, hasListener, notifyListeners, removeAllChangeListener, removeChangeListener

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.ijchart.xychart.dataset.IDataset

addChangeListener, forceDataSetChanged, removeAllChangeListener, removeChangeListener

Constructor Detail

DefaultKeyValueDataset

public DefaultKeyValueDataset()

没有参数的构造器.

DefaultKeyValueDataset

public DefaultKeyValueDataset(int initialCapacity)

指定集合初始大小的构造器.

Parameters:

initialCapacity - int

Method Detail

getAllKeys

public java.util.List getAllKeys()

返回所有键值

Specified by:

getAllKeys in interface IKeyValueDataset

Returns:

所有键值

getDataByKey

public IChartData getDataByKey(java.lang.Object key)

根据键值对应的数据值.如果没有找到则返回null.

Specified by:

getDataByKey in interface IKeyValueDataset

Parameters:

key - Object

Returns:

IChartData

getDataByIndex

public IChartData getDataByIndex(int index)

根据索引号取得数据值,如果索引超过范围则抛出异常.

Parameters:

index - int 索引值.

Returns:

IChartData

setDataByIndex

public void setDataByIndex(int index,
                           IChartData data)

根据索引号改变数据值,如果索引超过范围则抛出异常.

Parameters:

index - int 索引值.

data - IChartData 数据值.

setDataByKey

public boolean setDataByKey(java.lang.Object key,
                            IChartData data)

根据键值改变数据值.

Parameters:

key - Object 键值 (不可为null).

data - IChartData 数据值.

Returns:

boolean 是否改变了数据值.

getData

public java.util.List getData()

返回数据集合.此集合是不可改变的.

Returns:

List 数据集合.

getDataSize

public int getDataSize()

返回键值的个数.

Specified by:

getDataSize in interface IKeyValueDataset

Returns:

int

getKeyIndex

public int getKeyIndex(java.lang.Object key)

返回键值在所有键值中的索引.

Specified by:

getKeyIndex in interface IKeyValueDataset

Parameters:

key - Object 键值

Returns:

int 键值在所有键值中的索引,如果没有找到则返回-1.

addChartData

public void addChartData(java.lang.Object key,
                         IChartData value)

增加一个键值和数据对到集合中.

Parameters:

key - Object 键值对象 (不可为null).

value - Object 值对象 (可为null).

removeChartDataByKey

public int removeChartDataByKey(java.lang.Object key)

根据键值删除数据集对象.

Parameters:

key - Object 键值对象 (不可为null)

Returns:

int 找到的键值在集合中的位置索引,没找到返回-1.

removeChartDataByIndex

public void removeChartDataByIndex(int index)

根据索引删除数据集对象.

Parameters:

index - int 索引.

removeAllChartData

public void removeAllChartData()

清空数据集.

isThisDataType

public boolean isThisDataType(java.lang.Class c)

判断所有的数据值是否是类c.

Specified by:

isThisDataType in interface IDataset

Parameters:

c - Class 要判断的class (不可为null).

Returns:

boolean 如果所有数据值等于类c返回true,否则返回false.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

克隆本对象.

Overrides:

clone in class AbstractDataset

Returns:

Object

Throws:

java.lang.CloneNotSupportedException

equals

public boolean equals(java.lang.Object obj)

覆盖equals方法.

Overrides:

equals in class AbstractDataset

Parameters:

obj - Object

Returns:

boolean

hashCode

public int hashCode()

计算hascode值.

Overrides:

hashCode in class AbstractDataset

Returns:

int