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org.sbugs.logic
Class BeanComparator  

java.lang.Object
  org.sbugs.logic.BeanComparator

All Implemented Interfaces:

java.util.Comparator

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public class BeanComparator

extends java.lang.Object

implements java.util.Comparator

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Field Summary
private  java.lang.Class	beanClass
private  java.lang.String	comparePropName
private static java.lang.Object[]	emptyArgs
private  java.lang.reflect.Method	propertyMethod

 

Constructor Summary
protected	BeanComparator(java.lang.String comparePropName, java.lang.Class beanClass)

 

Method Summary
int	compare(java.lang.Object obj1, java.lang.Object obj2)           Return an integer that is negative, zero or positive depending on whether the first argument is less than, equal to or greater than the second according to this ordering.
protected  int	compareResults(java.lang.Object res1, java.lang.Object res2)
java.lang.Class	getBeanClass()
java.lang.String	getComparePropName()
static BeanComparator	getInstance(java.lang.String propName, java.lang.Class beanClass)
protected  java.lang.reflect.Method	getPropertyMethod()
void	setBeanClass(java.lang.Class clazz)
void	setComparePropName(java.lang.String propName)

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface java.util.Comparator

equals

 

Field Detail

comparePropName

private java.lang.String comparePropName

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beanClass

private java.lang.Class beanClass

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propertyMethod

private java.lang.reflect.Method propertyMethod

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emptyArgs

private static java.lang.Object[] emptyArgs

Constructor Detail

BeanComparator

protected BeanComparator(java.lang.String comparePropName,
                         java.lang.Class beanClass)

Method Detail

setComparePropName

public void setComparePropName(java.lang.String propName)

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getComparePropName

public java.lang.String getComparePropName()

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setBeanClass

public void setBeanClass(java.lang.Class clazz)

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getBeanClass

public java.lang.Class getBeanClass()

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getInstance

public static BeanComparator getInstance(java.lang.String propName,
                                         java.lang.Class beanClass)

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compare

public int compare(java.lang.Object obj1,
                   java.lang.Object obj2)

Description copied from interface: java.util.Comparator

Return an integer that is negative, zero or positive depending on whether the first argument is less than, equal to or greater than the second according to this ordering. This method should obey the following contract:

• if compare(a, b) < 0 then compare(b, a) > 0
• if compare(a, b) throws an exception, so does compare(b, a)
• if compare(a, b) < 0 and compare(b, c) < 0 then compare(a, c) < 0
• if compare(a, b) == 0 then compare(a, c) and compare(b, c) must have the same sign

To be consistent with equals, the following additional constraint is in place:

• if a.equals(b) or both a and b are null, then compare(a, b) == 0.

Although it is permissible for a comparator to provide an order inconsistent with equals, that should be documented.

Specified by:

compare in interface java.util.Comparator

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compareResults

protected int compareResults(java.lang.Object res1,
                             java.lang.Object res2)

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getPropertyMethod

protected java.lang.reflect.Method getPropertyMethod()
                                              throws java.lang.NoSuchMethodException,
                                                     java.lang.SecurityException

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