Package com.inductiveautomation.snap.data

Class Sort

java.lang.Object

com.inductiveautomation.snap.data.Sort

All Implemented Interfaces:

RMJSONArchiver.GetKeys, java.lang.Cloneable, java.util.Comparator

public class Sort
extends java.lang.Object
implements java.util.Comparator, java.lang.Cloneable, RMJSONArchiver.GetKeys

This class provides a basic description for comparison and sorting with a simple key and order (ascending or descending). You can create a new order like this:

   Sort titleFirst = new Sort("Title");
   Sort bestRevenueFirst = new Sort("Revenue", ORDER_DESCEND);
 

This class also provides useful static methods for comparison and sorting:

   Sort.sort(myList, "Title"); // Sort myList by its contents' getTitle method (alphabetically)
   Sort.sort(myList, bestRevenueFirst); // Sort myList by its contents' getRevenue method (largest first)
   List mySortList = new ArrayList();
   mySortList.add(bestRevenueFirst);
   mySortList.add(titleFirst);
   Sort.sort(myList, mySortList); // Sort myList by revenue and title
 

Field Summary

Fields

Modifier and Type	Field	Description
static java.util.Comparator	COMPARATOR
static byte	ORDER_ASCEND
static byte	ORDER_DESCEND
static byte	ORDER_SAME

Constructor Summary

Constructors

Constructor	Description
Sort()	Creates a plain sort with no key.
Sort(java.lang.String aKey)	Creates a sort with the given key and ORDER_ASCEND.
Sort(java.lang.String aKey, int anOrder)	Creates a sort with the given key and order.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	clone()	Standard clone implementation.
int	compare(java.lang.Object obj1, java.lang.Object obj2)	Returns how the two given objects compare with this sort.
static int	Compare(java.lang.Object anObj1, java.lang.Object anObj2)	Compare two value objects (assumed to be String, Number, Boolean, Date, Comparable, etc.).
boolean	equals(java.lang.Object anObj)	Standard equals implementation.
java.util.List<java.lang.String>	getJSONKeys()	RMJSONArchiver GetKeys method.
java.lang.String	getKey()	Returns the key for this sort.
int	getOrder()	Returns the order for this sort.
void	setKey(java.lang.String aKey)	Sets the key for this sort.
void	setOrder(int anOrder)	Sets the order for this sort.
static void	sort(java.util.List aList, Sort aSort)	Returns the given list sorted by the given sort.
static void	sort(java.util.List aList, Sort... theSorts)	Returns the given list sorted by the given sort.
static void	sort(java.util.List aList, java.lang.String aKey)	Returns the given list sorted by the given key.
static void	sort(java.util.List aList, java.lang.String... theKeys)	Returns the given list sorted by the given key.
static void	sort(java.util.List aList, java.util.List aSortList)	Returns the given list sorted by the given list of sorts.
static <T extends java.lang.Comparable<? super T>> java.util.List<T>	sortedList(java.util.Collection<T> aCollection)	Returns a new sorted list from given collection.
static <T> java.util.List<T>	sortedList(java.util.Collection<T> aCollection, java.lang.String aKey)	Returns a new list from the given list sorted by the given key.
static <T> java.util.List<T>	sortedList(java.util.Collection<T> aCollection, java.lang.String... theKeys)	Returns a new list from the given list sorted by the given key.
void	toggleOrder()	Toggles the order for this sort between ORDER_ASCEND<->ORDER_DESCEND.
java.lang.String	toString()	Returns a string representation of sort (just the sort key).

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

ORDER_SAME

public static final byte ORDER_SAME

See Also:

Constant Field Values

ORDER_ASCEND

public static final byte ORDER_ASCEND

See Also:

Constant Field Values

ORDER_DESCEND

public static final byte ORDER_DESCEND

See Also:

Constant Field Values

COMPARATOR

public static java.util.Comparator COMPARATOR

Constructor Detail

Sort

public Sort()

Creates a plain sort with no key. Used for unarchival, shouldn't be called directly.

Sort

public Sort(java.lang.String aKey)

Creates a sort with the given key and ORDER_ASCEND.

Sort

public Sort(java.lang.String aKey,
            int anOrder)

Creates a sort with the given key and order.

Method Detail

getKey

public java.lang.String getKey()

Returns the key for this sort.

setKey

public void setKey(java.lang.String aKey)

Sets the key for this sort.

getOrder

public int getOrder()

Returns the order for this sort.

setOrder

public void setOrder(int anOrder)

Sets the order for this sort.

toggleOrder

public void toggleOrder()

Toggles the order for this sort between ORDER_ASCEND<->ORDER_DESCEND.

compare

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

Returns how the two given objects compare with this sort.

Specified by:

compare in interface java.util.Comparator

Compare

public static int Compare(java.lang.Object anObj1,
                          java.lang.Object anObj2)

Compare two value objects (assumed to be String, Number, Boolean, Date, Comparable, etc.).

sort

public static void sort(java.util.List aList,
                        java.lang.String aKey)

Returns the given list sorted by the given key.

sort

public static void sort(java.util.List aList,
                        Sort aSort)

Returns the given list sorted by the given sort.

sort

public static void sort(java.util.List aList,
                        java.lang.String... theKeys)

Returns the given list sorted by the given key.

sort

public static void sort(java.util.List aList,
                        Sort... theSorts)

Returns the given list sorted by the given sort.

sort

public static void sort(java.util.List aList,
                        java.util.List aSortList)

Returns the given list sorted by the given list of sorts.

sortedList

public static <T extends java.lang.Comparable<? super T>> java.util.List<T> sortedList(java.util.Collection<T> aCollection)

Returns a new sorted list from given collection.

sortedList

public static <T> java.util.List<T> sortedList(java.util.Collection<T> aCollection,
                                               java.lang.String aKey)

Returns a new list from the given list sorted by the given key.

sortedList

public static <T> java.util.List<T> sortedList(java.util.Collection<T> aCollection,
                                               java.lang.String... theKeys)

Returns a new list from the given list sorted by the given key.

clone

public java.lang.Object clone()

Standard clone implementation.

Overrides:

clone in class java.lang.Object

getJSONKeys

public java.util.List<java.lang.String> getJSONKeys()

RMJSONArchiver GetKeys method.

Specified by:

getJSONKeys in interface RMJSONArchiver.GetKeys

equals

public boolean equals(java.lang.Object anObj)

Standard equals implementation.

Specified by:

equals in interface java.util.Comparator

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Returns a string representation of sort (just the sort key).

Overrides:

toString in class java.lang.Object