/// <summary>
/// Generates a logical block:
/// var tsm = tran.TextSearch("MyTextSearchTable");
/// tsm.Block("choose").And(new DBriize.TextSearch.BlockAnd("pill")).Or(tsm.BlockOr("blue red"))
/// .GetDocumentIDs
/// </summary>
/// <param name="containsWords">space separated words to be used by "contains" logic</param>
/// <param name="fullMatchWords">space separated words to be used by "full-match" logic</param>
/// <param name="ignoreOnEmptyParameters">Block will not be counted in intersection calculations if has empty FullMatch and Contains words</param>
/// <returns></returns>
public SBlock BlockAnd(string containsWords = "", string fullMatchWords = "", bool ignoreOnEmptyParameters = false)
{
fullMatchWords = String.IsNullOrEmpty(fullMatchWords) ? "" : fullMatchWords;
containsWords = String.IsNullOrEmpty(containsWords) ? "" : containsWords;
SBlock sb = new BlockAnd()
{
_tsm = this,
InternalBlockOperation = SBlock.eOperation.AND,
BlockId = this.cntBlockId++,
IsLogicalBlock = false
};
//First we add always but with the ignored flag
if (ignoreOnEmptyParameters && String.IsNullOrEmpty(fullMatchWords) && String.IsNullOrEmpty(containsWords))
{
sb.Ignored = true;
}
Blocks.Add(sb.BlockId, sb);
this.WordsPrepare(fullMatchWords.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Where(r => r.Length > 2), true, ref sb.ParsedWords);
this.WordsPrepare(containsWords.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Where(r => r.Length > 2), false, ref sb.ParsedWords);
toComputeWordsOrigin = true;
return(sb);
}
/// <summary>
/// Generates a logical block:
/// var tsm = tran.TextSearch("MyTextSearchTable");
/// tsm.Block("choose").And(new DBriize.TextSearch.BlockAnd("pill")).Or(tsm.BlockOr("blue red"))
/// .GetDocumentIDs
/// </summary>
/// <param name="containsWords">space separated words to be used by "contains" logic or startswith if words were stored by full-match logic</param>
/// <param name="fullMatchWords">space separated words to be used by "full-match" logic</param>
/// <param name="ignoreOnEmptyParameters">Block will not be counted in intersection calculations if has empty FullMatch and Contains words</param>
/// <returns></returns>
public SBlock BlockAnd(IEnumerable <string> containsWords, IEnumerable <string> fullMatchWords, bool ignoreOnEmptyParameters = false)
{
//SBlock sb = new BlockAnd()
//{
// _tsm = this,
// InternalBlockOperation = SBlock.eOperation.AND,
// BlockId = this.cntBlockId++,
// IsLogicalBlock = false
//};
SBlock sb = new BlockAnd()
{
_tsm = this,
InternalBlockOperation = SBlock.eOperation.AND,
BlockId = this.cntBlockId++,
IsLogicalBlock = false
};
//First we add always but with the ignored flag
if (ignoreOnEmptyParameters)
{
if ((containsWords == null || containsWords.Count() == 0 || containsWords.Where(r => r.Trim().Length > 0).Count() < 1)
&&
(fullMatchWords == null || fullMatchWords.Count() == 0 || fullMatchWords.Where(r => r.Trim().Length > 0).Count() < 1))
{
sb.Ignored = true;
}
}
Blocks.Add(sb.BlockId, sb);
this.WordsPrepare(fullMatchWords, true, ref sb.ParsedWords);
this.WordsPrepare(containsWords, false, ref sb.ParsedWords);
toComputeWordsOrigin = true;
return(sb);
}
SBlock CreateBlock(SBlock block, eOperation operation, bool ignoreOnEmptyParameters = false)
{
if (_tsm == null)
{
throw new Exception("DBriize.Exception: first search block must be added via TextSearchTable");
}
//Returning parent block in case if this block must be ignored
if (ignoreOnEmptyParameters && String.IsNullOrEmpty(block._fullMatchWords) && String.IsNullOrEmpty(block._containsWords))
{
return(this);
}
if (block._tsm == null)
{
//Creating real block
block._tsm = this._tsm;
block.BlockId = this._tsm.cntBlockId++;
this._tsm.WordsPrepare(block._fullMatchWords.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Where(r => r.Length > 2), true, ref block.ParsedWords);
this._tsm.WordsPrepare(block._containsWords.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Where(r => r.Length > 2), false, ref block.ParsedWords);
this._tsm.toComputeWordsOrigin = true;
this._tsm.Blocks[block.BlockId] = block;
}
//Creating logical block
SBlock b = null;
switch (operation)
{
case eOperation.AND:
b = new BlockAnd();
break;
case eOperation.OR:
b = new BlockOr();
break;
case eOperation.XOR:
b = new BlockXOR();
break;
case eOperation.EXCLUDE:
b = new BlockEXCLUDE();
break;
}
b._tsm = this._tsm;
b.BlockId = this._tsm.cntBlockId++;
b.LeftBlockId = BlockId;
b.RightBlockId = block.BlockId;
b.TransBlockOperation = operation;
//SBlock b = new SBlock()
//{
// _tsm = this._tsm,
// BlockId = this._tsm.cntBlockId++,
// LeftBlockId = this.BlockId,
// RightBlockId = block.BlockId,
// TransBlockOperation = operation
//};
this._tsm.Blocks[b.BlockId] = b;
return(b);
}
