question: protected void addShingledPhraseQueries ( final BooleanQuery . Builder mainQuery , final List < Clause > clauses , final Collection < FieldParams > fields , int shingleSize , final float tiebreaker , final int slop ) throws SyntaxError { if ( null == fields || fields . isEmpty ( ) || null == clauses || clauses . size ( ) < shingleSize ) return ; if ( 0 == shingleSize ) shingleSize = clauses . size ( ) ; final int lastClauseIndex = shingleSize - 1 ; StringBuilder userPhraseQuery = new StringBuilder ( ) ; for ( int i = 0 ; i < clauses . size ( ) - lastClauseIndex ; i ++ ) { userPhraseQuery . append ( '"' ) ; for ( int j = 0 ; j <= lastClauseIndex ; j ++ ) { userPhraseQuery . append ( clauses . get ( i + j ) . val ) ; userPhraseQuery . append ( ' ' ) ; } userPhraseQuery . append ( '"' ) ; userPhraseQuery . append ( ' ' ) ; } ExtendedSolrQueryParser pp = createEdismaxQueryParser ( this , IMPOSSIBLE_FIELD_NAME ) ; pp . addAlias ( IMPOSSIBLE_FIELD_NAME , tiebreaker , getFieldBoosts ( fields ) ) ; pp . setPhraseSlop ( slop ) ; pp . setRemoveStopFilter ( true ) ; pp . makeDismax = true ; pp . minClauseSize = 2 ; Query phrase = pp . parse ( userPhraseQuery . toString ( ) ) ; if ( phrase != null ) { mainQuery . add ( phrase , BooleanClause . Occur . SHOULD ) ; } }
target:  Modifies the main query by adding a new optional Query consisting of shingled phrase queries across the specified clauses using the  specified field =&gt; boost mappings.