com.phloc.commons.compare.GlobalCompareSettings Maven / Gradle / Ivy
package com.phloc.commons.compare;
import com.phloc.commons.state.EChange;
/**
* Settings for comparison
*
* @author Boris Gregorcic
*/
public class GlobalCompareSettings
{
private static final class SingletonHolder
{
/**
* The singleton instance
*/
public static final GlobalCompareSettings INSTANCE = new GlobalCompareSettings ();
}
/** By default null values come first */
public static final boolean DEFAULT_NULL_VALUES_COME_FIRST = true;
/**
* By default null values come first for backwards compatibility
* reasons
*/
private boolean m_bSortNullValuesFirst = DEFAULT_NULL_VALUES_COME_FIRST;
/**
* Ctor for singleton creation
*/
protected GlobalCompareSettings ()
{
// protected
}
/**
* Ctor
*
* @return the singleton instance
*/
public static GlobalCompareSettings getInstance ()
{
return SingletonHolder.INSTANCE;
}
/**
* @return Whether or not null values will be considered smaller
* than any other value and therefore will be sorted before other
* values
*/
public boolean isSortNullValuesFirst ()
{
return this.m_bSortNullValuesFirst;
}
/**
* This API can be used to influence the comparison behavior concerning
* null values. By default, null values will be
* considered smaller than any other value and therefore will be sorted before
* other values.
*
* @param bNullValuesFirst
* @return
*/
public EChange setSortNullValuesFirst (boolean bNullValuesFirst)
{
EChange eChange = EChange.valueOf (bNullValuesFirst != this.m_bSortNullValuesFirst);
this.m_bSortNullValuesFirst = bNullValuesFirst;
return eChange;
}
}