com.espertech.esper.util
Class CollectionUtil

java.lang.Object
  com.espertech.esper.util.CollectionUtil

public class CollectionUtil
extends java.lang.Object

Utility for handling collection or array tasks.

Field Summary

static java.util.Set<MultiKey<EventBean>>	EMPTY_ROW_SET
static java.util.SortedMap	EMPTY_SORTED_MAP
static java.lang.String[]	EMPTY_STRING_ARRAY
static EventBean[]	EVENTBEANARRAY_EMPTY
static java.lang.Iterable<EventBean>	NULL_EVENT_ITERABLE
static java.util.Iterator<EventBean>	NULL_EVENT_ITERATOR
static java.util.Set<EventBean>	SINGLE_NULL_ROW_EVENT_SET
static StopCallback	STOP_CALLBACK_NONE

Constructor Summary

CollectionUtil()

Method Summary

static java.lang.Object	addArrays(java.lang.Object first, java.lang.Object second)
static EventBean[]	addArrayWithSetSemantics(EventBean[] arrayOne, EventBean[] arrayTwo)
static void	addEventByKeyLazyListMapBack(java.lang.Object sortKey, EventBean eventBean, java.util.Map<java.lang.Object,java.lang.Object> eventMap)
static void	addEventByKeyLazyListMapFront(java.lang.Object key, EventBean bean, java.util.Map<java.lang.Object,java.lang.Object> eventMap)
static int[]	addValue(int[] ints, int i)
static java.lang.Object	arrayExpandAddElements(java.lang.Object array, java.util.Collection elementsToAdd)
static java.lang.Object	arrayExpandAddElements(java.lang.Object array, java.lang.Object[] elementsToAdd)
static java.lang.Object	arrayExpandAddSingle(java.lang.Object array, java.lang.Object elementsToAdd)
static java.lang.Object	arrayShrinkRemoveSingle(java.lang.Object array, int index)
static boolean	compare(java.lang.String[] otherIndexProps, java.lang.String[] thisIndexProps)
static java.lang.String[]	copySortArray(java.lang.String[] values)
static int	findItem(java.lang.String[] items, java.lang.String item)
static java.util.Comparator<java.lang.Object>	getComparator(ExprEvaluator[] sortCriteriaEvaluators, boolean isSortUsingCollator, boolean[] isDescendingValues)
static int[]	intArray(java.util.Collection<java.lang.Integer> set) Returns an array of integer values from the set of integer values
static boolean	isAllNullArray(java.lang.Object array)
static boolean	isAnySet(boolean[] array)
static java.util.Map<java.lang.String,java.lang.Object>	populateNameValueMap(java.lang.Object... values)
static boolean	removeEventByKeyLazyListMap(java.lang.Object key, EventBean bean, java.util.Map<java.lang.Object,java.lang.Object> eventMap)
static <T> int	searchArray(T[] array, T item)
static boolean	sortCompare(java.lang.String[] valuesOne, java.lang.String[] valuesTwo)
static java.lang.String[]	toArray(java.util.Collection<java.lang.String> strings)
static java.lang.String	toString(java.util.Collection<java.lang.Integer> stack, java.lang.String delimiterChars)
static <T> java.lang.String	toString(java.util.Collection<T> collection) Returns a list of the elements invoking toString on non-null elements.
static java.lang.String	toStringArray(java.lang.Object[] received)

Methods inherited from class java.lang.Object

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

Field Detail

NULL_EVENT_ITERATOR

public static final java.util.Iterator<EventBean> NULL_EVENT_ITERATOR

NULL_EVENT_ITERABLE

public static final java.lang.Iterable<EventBean> NULL_EVENT_ITERABLE

EMPTY_SORTED_MAP

public static final java.util.SortedMap EMPTY_SORTED_MAP

EMPTY_ROW_SET

public static final java.util.Set<MultiKey<EventBean>> EMPTY_ROW_SET

EVENTBEANARRAY_EMPTY

public static final EventBean[] EVENTBEANARRAY_EMPTY

SINGLE_NULL_ROW_EVENT_SET

public static final java.util.Set<EventBean> SINGLE_NULL_ROW_EVENT_SET

EMPTY_STRING_ARRAY

public static final java.lang.String[] EMPTY_STRING_ARRAY

STOP_CALLBACK_NONE

public static final StopCallback STOP_CALLBACK_NONE

Constructor Detail

CollectionUtil

public CollectionUtil()

Method Detail

getComparator

public static java.util.Comparator<java.lang.Object> getComparator(ExprEvaluator[] sortCriteriaEvaluators,
                                                                   boolean isSortUsingCollator,
                                                                   boolean[] isDescendingValues)

toString

public static java.lang.String toString(java.util.Collection<java.lang.Integer> stack,
                                        java.lang.String delimiterChars)

arrayExpandAddElements

public static java.lang.Object arrayExpandAddElements(java.lang.Object array,
                                                      java.lang.Object[] elementsToAdd)

arrayShrinkRemoveSingle

public static java.lang.Object arrayShrinkRemoveSingle(java.lang.Object array,
                                                       int index)

arrayExpandAddElements

public static java.lang.Object arrayExpandAddElements(java.lang.Object array,
                                                      java.util.Collection elementsToAdd)

arrayExpandAddSingle

public static java.lang.Object arrayExpandAddSingle(java.lang.Object array,
                                                    java.lang.Object elementsToAdd)

addValue

public static int[] addValue(int[] ints,
                             int i)

findItem

public static int findItem(java.lang.String[] items,
                           java.lang.String item)

intArray

public static int[] intArray(java.util.Collection<java.lang.Integer> set)

Returns an array of integer values from the set of integer values

Parameters:

set - to return array for

Returns:

array

copySortArray

public static java.lang.String[] copySortArray(java.lang.String[] values)

sortCompare

public static boolean sortCompare(java.lang.String[] valuesOne,
                                  java.lang.String[] valuesTwo)

toString

public static <T> java.lang.String toString(java.util.Collection<T> collection)

Returns a list of the elements invoking toString on non-null elements.

Type Parameters:

T - type

Parameters:

collection - to render

Returns:

comma-separate list of values (no escape)

compare

public static boolean compare(java.lang.String[] otherIndexProps,
                              java.lang.String[] thisIndexProps)

isAllNullArray

public static boolean isAllNullArray(java.lang.Object array)

toStringArray

public static java.lang.String toStringArray(java.lang.Object[] received)

populateNameValueMap

public static java.util.Map<java.lang.String,java.lang.Object> populateNameValueMap(java.lang.Object... values)

addArrays

public static java.lang.Object addArrays(java.lang.Object first,
                                         java.lang.Object second)

addArrayWithSetSemantics

public static EventBean[] addArrayWithSetSemantics(EventBean[] arrayOne,
                                                   EventBean[] arrayTwo)

toArray

public static java.lang.String[] toArray(java.util.Collection<java.lang.String> strings)

searchArray

public static <T> int searchArray(T[] array,
                                  T item)

removeEventByKeyLazyListMap

public static boolean removeEventByKeyLazyListMap(java.lang.Object key,
                                                  EventBean bean,
                                                  java.util.Map<java.lang.Object,java.lang.Object> eventMap)

addEventByKeyLazyListMapBack

public static void addEventByKeyLazyListMapBack(java.lang.Object sortKey,
                                                EventBean eventBean,
                                                java.util.Map<java.lang.Object,java.lang.Object> eventMap)

addEventByKeyLazyListMapFront

public static void addEventByKeyLazyListMapFront(java.lang.Object key,
                                                 EventBean bean,
                                                 java.util.Map<java.lang.Object,java.lang.Object> eventMap)

isAnySet

public static boolean isAnySet(boolean[] array)