com.gentlyweb.utils

类 GeneralComparator

java.lang.Object

com.gentlyweb.utils.GeneralComparator

所有已实现的接口:

Serializable, Comparator

public class GeneralComparator
extends Object
implements Comparator, Serializable

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
class	GeneralComparator.XMLConstants

字段概要

字段

限定符和类型	字段和说明
static String	ASC Use to indicate that a field should be sorted in ascending order.
int	count
static String	DESC Use to indicate that a field should be sorted in descending order.

构造器概要

构造器

构造器和说明
GeneralComparator(Class c)

方法概要

限定符和类型	方法和说明
void	addField(Getter field, String type)
void	addField(String field, String type) Add a field that we sort on, if you readd the same field then the type is just updated.
void	addFieldAfter(String field, String type, String ref) Add a new field in AFTER the named field, if we don't have the named field then we just call addField(String,String) which will add the field in after all the others.
void	addFieldAtIndex(String field, String type, int index)
void	addFieldBefore(String field, String type, String ref) Add a new field in BEFORE the named field, if we don't have the named field then we just call addField(String,String) which will add the field in after all the others.
int	compare(Object obj1, Object obj2)
boolean	equals(Object obj)
Class	getCompareClass()
int	getCount()
protected List	getFields() Return a List of GeneralComparator.SortField objects, this is used in the equals(Object) method.
void	removeField(String field) Remove a field that we sort on.

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

字段详细资料

count

public int count

ASC

public static final String ASC

Use to indicate that a field should be sorted in ascending order.

另请参阅:

常量字段值

DESC

public static final String DESC

Use to indicate that a field should be sorted in descending order.

另请参阅:

常量字段值

构造器详细资料

GeneralComparator

public GeneralComparator(Class c)

方法详细资料

getCompareClass

public Class getCompareClass()

addField

public void addField(Getter field,
                     String type)
              throws IllegalArgumentException

抛出:

IllegalArgumentException

addFieldAtIndex

public void addFieldAtIndex(String field,
                            String type,
                            int index)
                     throws IllegalArgumentException

抛出:

IllegalArgumentException

addFieldBefore

public void addFieldBefore(String field,
                           String type,
                           String ref)
                    throws IllegalArgumentException

Add a new field in BEFORE the named field, if we don't have the named field then we just call addField(String,String) which will add the field in after all the others.

参数:

field - The field to add.

type - Sort either ascending or descending, should be either GeneralComparator.ASC or GeneralComparator.DESC.

ref - The reference field.

抛出:

IllegalArgumentException - If we can't find the field in the class/class chain passed into the constructor.

addFieldAfter

public void addFieldAfter(String field,
                          String type,
                          String ref)
                   throws IllegalArgumentException

Add a new field in AFTER the named field, if we don't have the named field then we just call addField(String,String) which will add the field in after all the others.

参数:

field - The field to add.

type - Sort either ascending or descending, should be either GeneralComparator.ASC or GeneralComparator.DESC.

ref - The reference field.

抛出:

IllegalArgumentException - If we can't find the field in the class/class chain passed into the constructor.

removeField

public void removeField(String field)

Remove a field that we sort on. If we don't have the field then we do nothing.

参数:

field - The field to remove.

addField

public void addField(String field,
                     String type)
              throws IllegalArgumentException

Add a field that we sort on, if you readd the same field then the type is just updated. The order in which you add the fields provides the order in which the objects are sorted.

参数:

field - The field to sort on.

type - The type either GeneralComparator.ASC or GeneralComparator.DESC.

抛出:

IllegalArgumentException - If we can't find the field in the class/class chain passed into the constructor.

compare

public int compare(Object obj1,
                   Object obj2)

指定者:

compare 在接口中 Comparator

equals

public boolean equals(Object obj)

指定者:

equals 在接口中 Comparator

覆盖:

equals 在类中 Object

getFields

protected List getFields()

Return a List of GeneralComparator.SortField objects, this is used in the equals(Object) method.

返回:

A List of GeneralComparator.SortField objects.

getCount

public int getCount()