/// <summary>
/// Make one. Call DoIt to actually make the change.
/// </summary>
/// <param name="cache"></param>
/// <param name="hvo"></param>
/// <param name="flid"></param>
/// <param name="ihvoMin"></param>
/// <param name="ihvoLim"></param>
/// <param name="newValues"></param>
public CacheReplaceOneUndoAction(FdoCache cache, int hvo, int flid, int ihvoMin, int ihvoLim, int[] newValues)
{
m_cache = cache;
m_sda = cache.MainCacheAccessor;
m_hvo = hvo;
m_flid = flid;
IVwVirtualHandler vh;
if (m_cache.TryGetVirtualHandler(m_flid, out vh))
{
m_bvh = vh as BaseVirtualHandler;
}
m_index = ihvoMin;
m_newValues = newValues;
m_cvDel = ihvoLim - ihvoMin;
Debug.Assert(m_cvDel >= 0 && m_cvDel <= 1, "Currently only support deleting one item at a time.");
if (m_cvDel > 0)
{
m_oldValue = m_sda.get_VecItem(hvo, flid, ihvoMin);
}
}
/// <summary>
/// Return the segment range in terms of the segment indexes of the BeginObject segment property of the given hvoCba.
/// </summary>
/// <param name="cache"></param>
/// <param name="hvoCba"></param>
/// <param name="iBeginSegment">zero-based index into segments</param>
/// <param name="iEndSegment">zero-based into segments</param>
/// <returns></returns>
static public bool TryGetSegmentRange(FdoCache cache, int hvoCba,
out int iBeginSegment, out int iEndSegment)
{
iBeginSegment = -1;
iEndSegment = -1;
int[] segments = null;
// if it's a twfic type, then use twfic info, otherwise find a segment range.
ICmBaseAnnotation cba = CmBaseAnnotation.CreateFromDBObject(cache, hvoCba);
int hvoPara = cba.BeginObjectRAHvo;
IVwVirtualHandler vh;
// first try to get the segments from our Segments virtual handler
// if that has not been loaded for the paragraph, try SegmentsIgnoreTwfics
// to save time.
if (cache.TryGetVirtualHandler(StTxtPara.SegmentsFlid(cache), out vh) &&
(vh as BaseFDOPropertyVirtualHandler).IsPropInCache(cache.MainCacheAccessor, hvoPara, 0))
{
if (cba.AnnotationTypeRAHvo != 0)
{
StTxtPara.TwficInfo twficInfo = new StTxtPara.TwficInfo(cache, hvoCba);
if (twficInfo.SegmentIndex >= 0)
{
iBeginSegment = twficInfo.SegmentIndex; // return zero-based index.
}
else if (!cache.IsDummyObject(hvoCba))
{
int segIndexLogical;
string sql = string.Format("exec GetSegmentIndex {0}, {1}", hvoCba, CmAnnotationDefn.TextSegment(cache).Hvo);
DbOps.ReadOneIntFromCommand(cache, sql, null, out segIndexLogical);
if (segIndexLogical > 0)
iBeginSegment = segIndexLogical - 1; // subtract 1 to get a zero-based index.
}
}
if (iBeginSegment < 0)
segments = cache.GetVectorProperty(hvoPara, vh.Tag, true);
}
else if (cache.TryGetVirtualHandler(StTxtPara.SegmentsIgnoreTwficsFlid(cache), out vh))
{
segments = cache.GetVectorProperty(hvoPara, vh.Tag, true);
}
if (iBeginSegment < 0)
{
// this is annotation into a paragraph (but may not be a twfic or exist in SegForms).
// if it's not a twfic, find a segment range.
ISilDataAccess sda = cache.MainCacheAccessor;
int ihvoSeg = 0;
int cbaBeginOffset = cba.BeginOffset;
int cbaEndOffset = cba.EndOffset;
for (; ihvoSeg < segments.Length; ihvoSeg++)
{
int segEndOffset = sda.get_IntProp(segments[ihvoSeg], (int)CmBaseAnnotation.CmBaseAnnotationTags.kflidEndOffset);
if (segEndOffset <= cbaBeginOffset)
{
continue;
}
else if (iBeginSegment < 0)
{
iBeginSegment = ihvoSeg;
}
if (segEndOffset > cbaEndOffset)
{
iEndSegment = ihvoSeg;
break; // we've passed our annotation's EndOffset, so the previous segment is the last one in range.
}
}
// ihvoSeg should now be one index passed the segment in our range. this eguals the logical segment number.
if (iBeginSegment >= 0 && iEndSegment == -1)
{
iEndSegment = ihvoSeg < segments.Length ? ihvoSeg - 1 : segments.Length - 1;
}
}
return iBeginSegment >= 0;
}
/// <summary>
/// Try deleting wordforms when none of the given paragraphs have annotations (including dummies)
/// with instances of the wordforms.
/// </summary>
/// <param name="cache"></param>
/// <param name="wfIdsToTry">wordform ids to try to delete</param>
/// <param name="hvoParasInView">the paragraphs that may have dummy annotations with instances of those wordforms</param>
/// <param name="delObjIds">the wordforms that actually got deleted.</param>
/// <returns>true if we deleted a wordform</returns>
public static bool TryDeleteWordforms(FdoCache cache, int[] wfIdsToTry, int[] hvoParasInView, out Set<int> delObjIds)
{
int vtagSegments = StTxtPara.SegmentsFlid(cache);
IVwVirtualHandler vh;
cache.TryGetVirtualHandler(vtagSegments, out vh);
FDOSequencePropertyVirtualHandler segmentsVh = vh as FDOSequencePropertyVirtualHandler;
delObjIds = new Set<int>(wfIdsToTry.Length);
foreach (int wfid in wfIdsToTry)
{
if (!cache.IsValidObject(wfid))
continue; // already been deleted, probably as a consequence of annotation.DeleteUnderlyingObject.
ICmObject obj = CmObject.CreateFromDBObject(cache, wfid, false);
if (obj.CanDelete)
{
// make a final check to see if any of the segment forms in the given paragraphs contain an
// instance to this wordform. If not, it's safe to delete it.
if (!WordformHasOccurrenceInParas(cache, wfid, hvoParasInView, segmentsVh))
delObjIds.Add(wfid);
}
}
foreach (WfiWordform wf in new FdoObjectSet<WfiWordform>(cache, delObjIds.ToArray(), false, typeof(WfiWordform)))
{
wf.DeleteUnderlyingObject();
}
return delObjIds.Count != 0;
}
private void SetupGhostOwningFlidInfo(FdoCache cache, int ghostListFlid)
{
if (ghostListFlid == 0)
return;
IVwVirtualHandler vh;
cache.TryGetVirtualHandler(ghostListFlid, out vh);
m_vh = vh as FDOGhostSequencePropertyVirtualHandler;
// the ghost owner is on the last level.
m_cpiForOwningFlidForGhost = m_vh.RealOwningPath[m_vh.RealOwningPath.Count - 1];
}
/// <summary>
/// Make one. Call DoIt to actually make the change.
/// </summary>
/// <param name="cache"></param>
/// <param name="hvo"></param>
/// <param name="flid"></param>
/// <param name="ihvoMin"></param>
/// <param name="ihvoLim"></param>
/// <param name="newValues"></param>
public CacheReplaceOneUndoAction(FdoCache cache, int hvo, int flid, int ihvoMin, int ihvoLim, int[] newValues)
{
m_cache = cache;
m_sda = cache.MainCacheAccessor;
m_hvo = hvo;
m_flid = flid;
IVwVirtualHandler vh;
if (m_cache.TryGetVirtualHandler(m_flid, out vh))
{
m_bvh = vh as BaseVirtualHandler;
}
m_index = ihvoMin;
m_newValues = newValues;
m_cvDel = ihvoLim - ihvoMin;
Debug.Assert(m_cvDel >= 0 && m_cvDel <= 1, "Currently only support deleting one item at a time.");
if (m_cvDel > 0)
m_oldValue = m_sda.get_VecItem(hvo, flid, ihvoMin);
}