LCOV - code coverage report
Current view: top level - libdbproxy - predicate.cpp (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 43 2.3 %
Date: 2019-12-15 17:13:15 Functions: 2 10 20.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * Text:
       3             :  *      libsnapwebsites/src/libdbproxy/predicate.cpp
       4             :  *
       5             :  * Description:
       6             :  *      Handling of CQL query string manipulation.
       7             :  *
       8             :  * Documentation:
       9             :  *      See the corresponding .cpp file.
      10             :  *
      11             :  * License:
      12             :  *      Copyright (c) 2011-2019  Made to Order Software Corp.  All Rights Reserved
      13             :  * 
      14             :  *      https://snapwebsites.org/
      15             :  *      contact@m2osw.com
      16             :  *
      17             :  *      Permission is hereby granted, free of charge, to any person obtaining a
      18             :  *      copy of this software and associated documentation files (the
      19             :  *      "Software"), to deal in the Software without restriction, including
      20             :  *      without limitation the rights to use, copy, modify, merge, publish,
      21             :  *      distribute, sublicense, and/or sell copies of the Software, and to
      22             :  *      permit persons to whom the Software is furnished to do so, subject to
      23             :  *      the following conditions:
      24             :  *
      25             :  *      The above copyright notice and this permission notice shall be included
      26             :  *      in all copies or substantial portions of the Software.
      27             :  *
      28             :  *      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      29             :  *      OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      30             :  *      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
      31             :  *      IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
      32             :  *      CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
      33             :  *      TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
      34             :  *      SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      35             :  */
      36             : 
      37             : #include "libdbproxy/predicate.h"
      38             : 
      39             : #include <iostream>
      40             : 
      41             : namespace libdbproxy
      42             : {
      43             : 
      44             : /** \brief Define the first possible character in a column key.
      45             :  *
      46             :  * This character can be used to define the very first character
      47             :  * in a column key. Note though that it is rarely used because
      48             :  * the empty string serves the purpose and is more likely what
      49             :  * you want.
      50             :  *
      51             :  * The first character is '\0'.
      52             :  */
      53             : const QChar cell_predicate::first_char = QChar('\0');
      54             : 
      55             : 
      56             : /** \brief Define the last possible character in a column key.
      57             :  *
      58             :  * This character can be used to define the very last character
      59             :  * in a column key.
      60             :  *
      61             :  * The last character is '\\uFFFD'.
      62             :  *
      63             :  * \note
      64             :  * This character can also be used in row predicates.
      65             :  */
      66             : const QChar cell_predicate::last_char = QChar(L'\uFFFD');
      67             : 
      68             : 
      69             : /// \brief Cell predicate query handlers
      70           0 : void cell_key_predicate::appendQuery( QString& query, int& bind_count )
      71             : {
      72           0 :     query += " AND column1 == ?";
      73           0 :     bind_count++;
      74           0 : }
      75             : 
      76             : 
      77           0 : void cell_key_predicate::bindOrder( order& order )
      78             : {
      79           0 :     order.addParameter( f_cellKey );
      80           0 : }
      81             : 
      82             : 
      83             : /// \brief Cell range predicate query handlers
      84           0 : void cell_range_predicate::appendQuery( QString& query, int& bind_count )
      85             : {
      86           0 :     if(!f_startCellKey.isEmpty())
      87             :     {
      88           0 :         query += " AND column1>=?";
      89           0 :         bind_count += 1;
      90             :     }
      91             : 
      92           0 :     if(!f_endCellKey.isEmpty())
      93             :     {
      94             :         // The end boundary is NEVER included in the results
      95           0 :         query += " AND column1<?";
      96           0 :         bind_count += 1;
      97             :     }
      98             : 
      99           0 :     if(f_reversed)
     100             :     {
     101           0 :         query += " ORDER BY column1 DESC";
     102             :     }
     103           0 : }
     104             : 
     105             : 
     106           0 : void cell_range_predicate::bindOrder( order& order )
     107             : {
     108           0 :     if(!f_startCellKey.isEmpty())
     109             :     {
     110           0 :         order.addParameter( f_startCellKey );
     111             :     }
     112             : 
     113           0 :     if(!f_endCellKey.isEmpty())
     114             :     {
     115           0 :         order.addParameter( f_endCellKey );
     116             :     }
     117           0 : }
     118             : 
     119             : 
     120             : /// \brief Row key predicate query handlers
     121           0 : void row_key_predicate::appendQuery( QString& query, int& bind_count )
     122             : {
     123           0 :     query += " WHERE key=?";
     124           0 :     ++bind_count;
     125           0 :     f_cell_pred->appendQuery( query, bind_count );
     126           0 : }
     127             : 
     128             : 
     129           0 : void row_key_predicate::bindOrder( order& order)
     130             : {
     131           0 :     order.addParameter( f_rowKey );
     132           0 :     f_cell_pred->bindOrder( order );
     133           0 : }
     134             : 
     135             : 
     136             : /// \brief Row range predicate query handlers
     137           0 : void row_range_predicate::appendQuery( QString& query, int& bind_count )
     138             : {
     139           0 :     query += " WHERE token(key) >= token(?) AND token(key) <= token(?)";
     140           0 :     bind_count += 2;
     141           0 :     f_cell_pred->appendQuery( query, bind_count );
     142           0 : }
     143             : 
     144             : 
     145           0 : void row_range_predicate::bindOrder( order& order )
     146             : {
     147           0 :     order.addParameter( f_startRowKey );
     148           0 :     order.addParameter( f_endRowKey );
     149           0 :     f_cell_pred->bindOrder( order );
     150           0 : }
     151             : 
     152             : 
     153           6 : } // namespace libdbproxy
     154             : 
     155             : // vim: ts=4 sw=4 et

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