gets the `` in '' direction filter set . the `` in '' direction is referred to copying headers from an external message to a camel message . concode_field_sep Set<String> outFilter concode_elem_sep boolean allowNullValues concode_elem_sep Pattern inFilterPattern concode_elem_sep boolean lowerCase concode_elem_sep boolean caseInsensitive concode_elem_sep Pattern outFilterPattern concode_elem_sep Set<String> inFilter concode_field_sep boolean isLowerCase concode_elem_sep void setLowerCase concode_elem_sep boolean doFiltering concode_elem_sep String getOutFilterPattern concode_elem_sep void setOutFilterPattern concode_elem_sep boolean applyFilterToExternalHeaders concode_elem_sep String getInFilterPattern concode_elem_sep boolean isCaseInsensitive concode_elem_sep void setAllowNullValues concode_elem_sep void setCaseInsensitive concode_elem_sep boolean isAllowNullValues concode_elem_sep Set<String> getOutFilter concode_elem_sep void setOutFilter concode_elem_sep boolean extendedFilter concode_elem_sep void setInFilter concode_elem_sep boolean applyFilterToCamelHeaders concode_elem_sep void setInFilterPattern
Set < String > function ( ) { if ( inFilter == null ) { inFilter = new HashSet < String > ( ) ; } return inFilter ; }