com.j_spaces.core.cache

Interface IExtendedIndexScanPositioner<K,T>

All Known Subinterfaces:

IExtendedEntriesIndex<K,V>, IExtendedIndex<K,V>

All Known Implementing Classes:

ExtendedIndexHandler, FifoGroupsExtendedIndexHandler, TemplatesExtendedIndexHandler

public interface IExtendedIndexScanPositioner<K,T>

TODO add Javadoc

Since:

7.5

Version:

1.0

Author:

Yechiel Fefer

Method Summary

Modifier and Type	Method and Description
IScanListIterator<T>	establishScan(K startPos, short relation, K endPos, boolean endPosInclusive) establish a scan according to the relation given and startPos : the start-scan object , null means scan all values.
IScanListIterator<T>	establishScan(K startPos, short relation, K endPos, boolean endPosInclusive, boolean ordered) establish a scan according to the relation given and startPos : the start-scan object , null means scan all values.

Method Detail

establishScan

IScanListIterator<T> establishScan(K startPos,
                                   short relation,
                                   K endPos,
                                   boolean endPosInclusive)

establish a scan according to the relation given and startPos : the start-scan object , null means scan all values. The relation is from com.j_spaces.client.TemplateMatchCodes: LT, LE, GT, GE (other codes are not relevant) endPos- key up to (or null if no limit in index) endPosInclusive : is the endPos up to (or down to) and including ? returns an IOrderedIndexScan object which enables scanning the ordered index, Null if no relevant elements to scan

establishScan

IScanListIterator<T> establishScan(K startPos,
                                   short relation,
                                   K endPos,
                                   boolean endPosInclusive,
                                   boolean ordered)

establish a scan according to the relation given and startPos : the start-scan object , null means scan all values. The relation is from com.j_spaces.client.TemplateMatchCodes: LT, LE, GT, GE (other codes are not relevant) endPos- key up to (or null if no limit in index) endPosInclusive : is the endPos up to (or down to) and including ? ordered - according to the condition. GT, GE ==> ascending, LT, LE =====> descending. returns an IOrderedIndexScan object which enables scanning the ordered index, Null if no relevant elements to scan