/sql-processor/src/main/java/org/sqlproc/engine/impl/SqlDefaultFeatures.java

http://github.com/hudec/sql-processor · Java · 336 lines · 116 code · 10 blank · 210 comment · 6 complexity · bb7687ebbfbe1f9e6b39003f9f1770e0 MD5 · raw file 

    

  1. package org.sqlproc.engine.impl;
    2. 

  2. 

  3. import static org.sqlproc.engine.SqlFeature.CASSANDRA;
    4. 

  4. import static org.sqlproc.engine.SqlFeature.DB2;
    5. 

  5. import static org.sqlproc.engine.SqlFeature.H2;
    6. 

  6. import static org.sqlproc.engine.SqlFeature.HSQLDB;
    7. 

  7. import static org.sqlproc.engine.SqlFeature.IDSEL;
    8. 

  8. import static org.sqlproc.engine.SqlFeature.IDSEL_Integer;
    9. 

  9. import static org.sqlproc.engine.SqlFeature.IDSEL_Long;
    10. 

  10. import static org.sqlproc.engine.SqlFeature.INFORMIX;
    11. 

  11. import static org.sqlproc.engine.SqlFeature.JDBC;
    12. 

  12. import static org.sqlproc.engine.SqlFeature.LIKE_STRING;
    13. 

  13. import static org.sqlproc.engine.SqlFeature.LIMIT_FROM_TO;
    14. 

  14. import static org.sqlproc.engine.SqlFeature.LIMIT_FROM_TO_ORDERED;
    15. 

  15. import static org.sqlproc.engine.SqlFeature.LIMIT_TO;
    16. 

  16. import static org.sqlproc.engine.SqlFeature.LIMIT_TO_ORDERED;
    17. 

  17. import static org.sqlproc.engine.SqlFeature.LOG_SQL_COMMAND_FOR_EXCEPTION;
    18. 

  18. import static org.sqlproc.engine.SqlFeature.METHODS_ENUM_IN;
    19. 

  19. import static org.sqlproc.engine.SqlFeature.METHODS_ENUM_OUT;
    20. 

  20. import static org.sqlproc.engine.SqlFeature.MSSQL;
    21. 

  21. import static org.sqlproc.engine.SqlFeature.MYSQL;
    22. 

  22. import static org.sqlproc.engine.SqlFeature.OPERATOR_ATTRIBUTE;
    23. 

  23. import static org.sqlproc.engine.SqlFeature.OPERATOR_ATTRIBUTE_IN_MAP;
    24. 

  24. import static org.sqlproc.engine.SqlFeature.ORACLE;
    25. 

  25. import static org.sqlproc.engine.SqlFeature.POSTGRESQL;
    26. 

  26. import static org.sqlproc.engine.SqlFeature.SEQ;
    27. 

  27. import static org.sqlproc.engine.SqlFeature.SEQ_NAME;
    28. 

  28. import static org.sqlproc.engine.SqlFeature.SURROUND_QUERY_LIKE_PARTIAL;
    29. 

  29. import static org.sqlproc.engine.SqlFeature.SURROUND_QUERY_MIN_LEN;
    30. 

  30. import static org.sqlproc.engine.SqlFeature.VERSION_COLUMN;
    31. 

  31. import static org.sqlproc.engine.SqlFeature.WILDCARD_CHARACTER;
    32. 

  32. 

  33. import java.util.HashMap;
    34. 

  34. import java.util.Map;
    35. 

  35. import java.util.Map.Entry;
    36. 

  36. 

  37. import org.sqlproc.engine.SqlFeature;
    38. 

  38. 

  39. /**
    40. 

  40.  * The default optional features.
    41. 

  41.  * 
    42. 

  42.  * <p>
    43. 

  43.  * For more info please see the <a href="https://github.com/hudec/sql-processor/wiki">Tutorials</a>.
    44. 

  44.  * 
    45. 

  45.  * @author <a href="mailto:Vladimir.Hudec@gmail.com">Vladimir Hudec</a>
    46. 

  46.  */
    47. 

  47. public class SqlDefaultFeatures {
    48. 

  48. 

  49.     public static final Map<SqlFeature, Object> FEATURES = new HashMap<SqlFeature, Object>();
    50. 

  50.     public static final Map<String, Map<SqlFeature, Object>> FILTERED_FEATURES = new HashMap<String, Map<SqlFeature, Object>>();
    51. 

  51. 

  52.     static {
    53. 

  53.         FILTERED_FEATURES.put(ORACLE.name(), new HashMap<SqlFeature, Object>());
    54. 

  54.         FILTERED_FEATURES.put(HSQLDB.name(), new HashMap<SqlFeature, Object>());
    55. 

  55.         FILTERED_FEATURES.put(H2.name(), new HashMap<SqlFeature, Object>());
    56. 

  56.         FILTERED_FEATURES.put(MYSQL.name(), new HashMap<SqlFeature, Object>());
    57. 

  57.         FILTERED_FEATURES.put(POSTGRESQL.name(), new HashMap<SqlFeature, Object>());
    58. 

  58.         FILTERED_FEATURES.put(INFORMIX.name(), new HashMap<SqlFeature, Object>());
    59. 

  59.         FILTERED_FEATURES.put(MSSQL.name(), new HashMap<SqlFeature, Object>());
    60. 

  60.         FILTERED_FEATURES.put(DB2.name(), new HashMap<SqlFeature, Object>());
    61. 

  61.         FILTERED_FEATURES.put(CASSANDRA.name(), new HashMap<SqlFeature, Object>());
    62. 

  62.     }
    63. 

  63. 

  64.     static {
    65. 

  65.         /**
    66. 

  66.          * This is the default value related to the key <code>WILDCARD_CHARACTER</code> .
    67. 

  67.          */
    68. 

  68.         FEATURES.put(WILDCARD_CHARACTER, "%");
    69. 

  69.         /**
    70. 

  70.          * This is the default value related to the key <code>SURROUND_QUERY_LIKE_PARTIAL</code> .
    71. 

  71.          */
    72. 

  72.         FEATURES.put(SURROUND_QUERY_LIKE_PARTIAL, Boolean.TRUE);
    73. 

  73.         /**
    74. 

  74.          * This is the default value related to the key <code>SURROUND_QUERY_MIN_LEN</code>.
    75. 

  75.          */
    76. 

  76.         FEATURES.put(SURROUND_QUERY_MIN_LEN, 2);
    77. 

  77.         /**
    78. 

  78.          * This is the default value related to the key <code>LIKE_STRING</code>.
    79. 

  79.          */
    80. 

  80.         FEATURES.put(LIKE_STRING, "like");
    81. 

  81.         /**
    82. 

  82.          * This is the default value related to the key <code>METHODS_ENUM_IN</code>. It is list of the next methods:
    83. 

  83.          * <ul>
    84. 

  84.          * <li>getCode</li>
    85. 

  85.          * <li>getValue</li>
    86. 

  86.          * <li>getName</li>
    87. 

  87.          * <li>name</li>
    88. 

  88.          * </ul>
    89. 

  89.          */
    90. 

  90.         FEATURES.put(METHODS_ENUM_IN, new String[] { "getCode", "getValue", "getName", "name" });
    91. 

  91.         /**
    92. 

  92.          * This is the default value related to the key <code>METHODS_ENUM_OUT</code>. It is list of the next methods:
    93. 

  93.          * <ul>
    94. 

  94.          * <li>fromCode</li>
    95. 

  95.          * <li>fromValue</li>
    96. 

  96.          * <li>valueOf</li>
    97. 

  97.          * </ul>
    98. 

  98.          */
    99. 

  99.         FEATURES.put(METHODS_ENUM_OUT, new String[] { "fromCode", "fromValue", "valueOf" });
    100. 

  100.         /**
    101. 

  101.          * <code>HSQLDB_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key <code>LIMIT_FROM_TO</code>
    102. 

  102.          * in the case the filter value <code>HSQLDB</code> is used for the {@link SqlProcessorLoader} instance
    103. 

  103.          * creation.
    104. 

  104.          */
    105. 

  105.         FILTERED_FEATURES.get(HSQLDB.name()).put(LIMIT_FROM_TO, "$S offset $F limit $M");
    106. 

  106.         /**
    107. 

  107.          * <code>HSQLDB_DEFAULT_LIMIT_FROM_TO_ORDERED</code> is the default value related to the key
    108. 

  108.          * <code>LIMIT_FROM_TO_ORDERED</code> in the case the filter value <code>HSQLDB</code> is used for the
    109. 

  109.          * {@link SqlProcessorLoader} instance creation.
    110. 

  110.          */
    111. 

  111.         FILTERED_FEATURES.get(HSQLDB.name()).put(LIMIT_FROM_TO_ORDERED, "$S offset $F limit $M using index");
    112. 

  112.         /**
    113. 

  113.          * <code>HSQLDB_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the
    114. 

  114.          * case the filter value <code>HSQLDB</code> is used for the {@link SqlProcessorLoader} instance creation.
    115. 

  115.          */
    116. 

  116.         FILTERED_FEATURES.get(HSQLDB.name()).put(LIMIT_TO, "$S limit $M");
    117. 

  117.         /**
    118. 

  118.          * <code>HSQLDB_DEFAULT_LIMIT_TO_ORDERED</code> is the default value related to the key
    119. 

  119.          * <code>LIMIT_TO_ORDERED</code> in the case the filter value <code>HSQLDB</code> is used for the
    120. 

  120.          * {@link SqlProcessorLoader} instance creation.
    121. 

  121.          */
    122. 

  122.         FILTERED_FEATURES.get(HSQLDB.name()).put(LIMIT_TO_ORDERED, "$S limit $M using index");
    123. 

  123.         /**
    124. 

  124.          * <code>H2_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key <code>LIMIT_FROM_TO</code> in
    125. 

  125.          * the case the filter value <code>H2</code> is used for the {@link SqlProcessorLoader} instance creation.
    126. 

  126.          */
    127. 

  127.         FILTERED_FEATURES.get(H2.name()).put(LIMIT_FROM_TO, "$S limit $M offset $F");
    128. 

  128.         /**
    129. 

  129.          * <code>H2_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the case
    130. 

  130.          * the filter value <code>H2</code> is used for the {@link SqlProcessorLoader} instance creation.
    131. 

  131.          */
    132. 

  132.         FILTERED_FEATURES.get(H2.name()).put(LIMIT_TO, "$S limit $M");
    133. 

  133.         /**
    134. 

  134.          * <code>ORACLE_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key <code>LIMIT_FROM_TO</code>
    135. 

  135.          * in the case the filter value <code>ORACLE</code> is used for the {@link SqlProcessorLoader} instance
    136. 

  136.          * creation.
    137. 

  137.          */
    138. 

  138.         FILTERED_FEATURES.get(ORACLE.name()).put(LIMIT_FROM_TO,
    139. 

  139.                 "select * from ( select row_.*, rownum rownum_ from ($S) row_ where rownum <= $m) where rownum_ > $F");
    140. 

  140.         /**
    141. 

  141.          * <code>ORACLE_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the
    142. 

  142.          * case the filter value <code>ORACLE</code> is used for the {@link SqlProcessorLoader} instance creation.
    143. 

  143.          */
    144. 

  144.         FILTERED_FEATURES.get(ORACLE.name()).put(LIMIT_TO, "select * from ($S) where rownum <= $m");
    145. 

  145.         /**
    146. 

  146.          * <code>MYSQL_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key <code>LIMIT_FROM_TO</code>
    147. 

  147.          * in the case the filter value <code>MYSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    148. 

  148.          */
    149. 

  149.         FILTERED_FEATURES.get(MYSQL.name()).put(LIMIT_FROM_TO, "$S limit $F, $M");
    150. 

  150.         /**
    151. 

  151.          * <code>MYSQL_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the case
    152. 

  152.          * the filter value <code>MYSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    153. 

  153.          */
    154. 

  154.         FILTERED_FEATURES.get(MYSQL.name()).put(LIMIT_TO, "$S limit $M");
    155. 

  155.         /**
    156. 

  156.          * <code>POSTGRESQL_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key
    157. 

  157.          * <code>LIMIT_FROM_TO</code> in the case the filter value <code>POSTGRESQL</code> is used for the
    158. 

  158.          * {@link SqlProcessorLoader} instance creation.
    159. 

  159.          */
    160. 

  160.         FILTERED_FEATURES.get(POSTGRESQL.name()).put(LIMIT_FROM_TO, "$S limit $M offset $F");
    161. 

  161.         /**
    162. 

  162.          * <code>POSTGRESQL_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the
    163. 

  163.          * case the filter value <code>POSTGRESQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    164. 

  164.          */
    165. 

  165.         FILTERED_FEATURES.get(POSTGRESQL.name()).put(LIMIT_TO, "$S limit $M");
    166. 

  166.         /**
    167. 

  167.          * <code>INFORMIX_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key
    168. 

  168.          * <code>LIMIT_FROM_TO</code> in the case the filter value <code>INFORMIX</code> is used for the
    169. 

  169.          * {@link SqlProcessorLoader} instance creation.
    170. 

  170.          */
    171. 

  171.         FILTERED_FEATURES.get(INFORMIX.name()).put(LIMIT_FROM_TO, "select skip $F first $M $s");
    172. 

  172.         /**
    173. 

  173.          * <code>INFORMIX_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the
    174. 

  174.          * case the filter value <code>INFORMIX</code> is used for the {@link SqlProcessorLoader} instance creation.
    175. 

  175.          */
    176. 

  176.         FILTERED_FEATURES.get(INFORMIX.name()).put(LIMIT_TO, "select first $M $s");
    177. 

  177.         /**
    178. 

  178.          * Version for MS SQL Server 2012: <code>MSSQL_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the
    179. 

  179.          * key <code>LIMIT_FROM_TO</code> in the case the filter value <code>MSSQL</code> is used for the
    180. 

  180.          * {@link SqlProcessorLoader} instance creation.
    181. 

  181.          */
    182. 

  182.         FILTERED_FEATURES.get(MSSQL.name()).put(LIMIT_FROM_TO, "$S OFFSET ($F) ROWS FETCH NEXT ($M) ROWS ONLY");
    183. 

  183.         /**
    184. 

  184.          * <code>MSSQL_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the case
    185. 

  185.          * the filter value <code>MSSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    186. 

  186.          */
    187. 

  187.         FILTERED_FEATURES.get(MSSQL.name()).put(LIMIT_TO, "select top ($M) $s");
    188. 

  188.         /**
    189. 

  189.          * <code>DB2_DEFAULT_LIMIT_FROM_TO</code> is the default value related to the key <code>LIMIT_FROM_TO</code> in
    190. 

  190.          * the case the filter value <code>DB2</code> is used for the {@link SqlProcessorLoader} instance creation.
    191. 

  191.          */
    192. 

  192.         FILTERED_FEATURES.get(DB2.name()).put(LIMIT_FROM_TO,
    193. 

  193.                 "select * from (select row_.*, rownumber() over() rownum_ from ($S) row_) where rownum_ <= $m and rownum_ > $F");
    194. 

  194.         /**
    195. 

  195.          * <code>DB2_DEFAULT_LIMIT_TO</code> is the default value related to the key <code>LIMIT_TO</code> in the case
    196. 

  196.          * the filter value <code>DB2</code> is used for the {@link SqlProcessorLoader} instance creation.
    197. 

  197.          */
    198. 

  198.         FILTERED_FEATURES.get(DB2.name()).put(LIMIT_TO,
    199. 

  199.                 "select * from (select row_.*, rownumber() over() rownum_ from ($S) row_) where rownum_ <= $m");
    200. 

  200.         /**
    201. 

  201.          * <code>HSQLDB_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the
    202. 

  202.          * filter value <code>HSQLDB</code> is used for the {@link SqlProcessorLoader} instance creation.
    203. 

  203.          */
    204. 

  204.         FILTERED_FEATURES.get(HSQLDB.name()).put(SEQ, "call next value for $n");
    205. 

  205.         /**
    206. 

  206.          * <code>H2_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the filter
    207. 

  207.          * value <code>H2</code> is used for the {@link SqlProcessorLoader} instance creation.
    208. 

  208.          */
    209. 

  209.         FILTERED_FEATURES.get(H2.name()).put(SEQ, "call next value for $n");
    210. 

  210.         /**
    211. 

  211.          * <code>MYSQL_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the
    212. 

  212.          * filter value <code>MYSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    213. 

  213.          */
    214. 

  214.         // TODO $t - table name
    215. 

  215.         // public static final String MYSQL_DEFAULT_SEQ,
    216. 

  216.         // "select auto_increment from information_schema.tables where table_name, '$t'");
    217. 

  217.         /**
    218. 

  218.          * <code>ORACLE_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the
    219. 

  219.          * filter value <code>ORACLE</code> is used for the {@link SqlProcessorLoader} instance creation.
    220. 

  220.          */
    221. 

  221.         FILTERED_FEATURES.get(ORACLE.name()).put(SEQ, "select $n.nextval from dual");
    222. 

  222.         /**
    223. 

  223.          * <code>POSTGRESQL_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the
    224. 

  224.          * filter value <code>POSTGRESQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    225. 

  225.          */
    226. 

  226.         FILTERED_FEATURES.get(POSTGRESQL.name()).put(SEQ, "select nextval('$n')");
    227. 

  227.         /**
    228. 

  228.          * <code>INFORMIX_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the
    229. 

  229.          * filter value <code>INFORMIX</code> is used for the {@link SqlProcessorLoader} instance creation.
    230. 

  230.          */
    231. 

  231.         FILTERED_FEATURES.get(INFORMIX.name()).put(SEQ, "SELECT FIRST 1 $n.NEXTVAL FROM systables");
    232. 

  232.         /**
    233. 

  233.          * <code>DB2_DEFAULT_SEQ</code> is the default value related to the key <code>SEQ</code> in the case the filter
    234. 

  234.          * value <code>DB2</code> is used for the {@link SqlProcessorLoader} instance creation.
    235. 

  235.          */
    236. 

  236.         FILTERED_FEATURES.get(DB2.name()).put(SEQ, "values nextval for $n");
    237. 

  237.         /**
    238. 

  238.          * <code>DEFAULT_SEQ_NAME</code> is the default sequence name.
    239. 

  239.          */
    240. 

  240.         FEATURES.put(SEQ_NAME, "SQLPROC_SEQUENCE");
    241. 

  241.         /**
    242. 

  242.          * <code>HSQLDB_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case the
    243. 

  243.          * filter value <code>HSQLDB</code> is used for the {@link SqlProcessorLoader} instance creation.
    244. 

  244.          */
    245. 

  245.         FILTERED_FEATURES.get(HSQLDB.name()).put(IDSEL, "call identity()");
    246. 

  246.         /**
    247. 

  247.          * <code>H2_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case the
    248. 

  248.          * filter value <code>H2</code> is used for the {@link SqlProcessorLoader} instance creation.
    249. 

  249.          */
    250. 

  250.         FILTERED_FEATURES.get(H2.name()).put(IDSEL, "call identity()");
    251. 

  251.         /**
    252. 

  252.          * <code>MYSQL_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case the
    253. 

  253.          * filter value <code>MYSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    254. 

  254.          */
    255. 

  255.         FILTERED_FEATURES.get(MYSQL.name()).put(IDSEL, "select last_insert_id()");
    256. 

  256.         /**
    257. 

  257.          * <code>POSTGRESQL_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case
    258. 

  258.          * the filter value <code>POSTGRESQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    259. 

  259.          */
    260. 

  260.         // TODO $t - table name, $c - column name
    261. 

  261.         FILTERED_FEATURES.get(POSTGRESQL.name()).put(IDSEL, "select currval(pg_get_serial_sequence('$t','$c'))");
    262. 

  262.         /**
    263. 

  263.          * <code>INFORMIX_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case
    264. 

  264.          * the filter value <code>INFORMIX</code> is used for the {@link SqlProcessorLoader} instance creation.
    265. 

  265.          */
    266. 

  266.         FILTERED_FEATURES.get(INFORMIX.name()).put(IDSEL, "SELECT FIRST 1 dbinfo('bigserial') FROM systables");
    267. 

  267.         /**
    268. 

  268.          * <code>INFORMIX_DEFAULT_IDSEL_Long</code> is the default value related to the key <code>IDSEL</code> in the
    269. 

  269.          * case the filter value <code>INFORMIX</code> is used for the {@link SqlProcessorLoader} instance creation.
    270. 

  270.          */
    271. 

  271.         // public static final String INFORMIX_DEFAULT_IDSEL_Long,
    272. 

  272.         // "select dbinfo('serial8') from informix.systables where tabid=1");
    273. 

  273.         FILTERED_FEATURES.get(INFORMIX.name()).put(IDSEL_Long,
    274. 

  274.                 "select dbinfo('bigserial') from informix.systables where tabid=1");
    275. 

  275.         /**
    276. 

  276.          * <code>INFORMIX_DEFAULT_IDSEL_Integer</code> is the default value related to the key <code>IDSEL</code> in the
    277. 

  277.          * case the filter value <code>INFORMIX</code> is used for the {@link SqlProcessorLoader} instance creation.
    278. 

  278.          */
    279. 

  279.         FILTERED_FEATURES.get(INFORMIX.name()).put(IDSEL_Integer,
    280. 

  280.                 "select dbinfo('sqlca.sqlerrd1') from informix.systables where tabid=1");
    281. 

  281.         /**
    282. 

  282.          * <code>MSSQL_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case the
    283. 

  283.          * filter value <code>MSSQL</code> is used for the {@link SqlProcessorLoader} instance creation.
    284. 

  284.          * <p/>
    285. 

  285.          * The default value is {@link #IDSEL_JDBC}.
    286. 

  286.          */
    287. 

  287.         FILTERED_FEATURES.get(MSSQL.name()).put(IDSEL, JDBC.name());
    288. 

  288.         /**
    289. 

  289.          * /** <code>DB2_DEFAULT_IDSEL</code> is the default value related to the key <code>IDSEL</code> in the case the
    290. 

  290.          * filter value <code>DB2</code> is used for the {@link SqlProcessorLoader} instance creation.
    291. 

  291.          */
    292. 

  292.         FILTERED_FEATURES.get(DB2.name()).put(IDSEL, "SELECT identity_val_local() FROM SYSIBM.DUAL");
    293. 

  293.         /**
    294. 

  294.          * <code>DEFAULT_VERSION_COLUMN</code> is the default name of the column devoted to the optimistic locking.
    295. 

  295.          */
    296. 

  296.         FEATURES.put(VERSION_COLUMN, "version");
    297. 

  297.         /**
    298. 

  298.          * This is the default value related to the key <code>OPERATOR_ATTRIBUTE</code>.
    299. 

  299.          */
    300. 

  300.         FEATURES.put(OPERATOR_ATTRIBUTE, "Op");
    301. 

  301.         /**
    302. 

  302.          * This is the default value related to the key <code>OPERATOR_ATTRIBUTE_IN_MAP</code>.
    303. 

  303.          */
    304. 

  304.         FEATURES.put(OPERATOR_ATTRIBUTE_IN_MAP, "operators");
    305. 

  305.         /**
    306. 

  306.          * This is the default value related to the key <code>LOG_SQL_COMMAND_FOR_EXCEPTION</code> .
    307. 

  307.          */
    308. 

  308.         FEATURES.put(LOG_SQL_COMMAND_FOR_EXCEPTION, Boolean.FALSE);
    309. 

  309.     }
    310. 

  310. 

  311.     /**
    312. 

  312.      * Returns filtered features. For example the features can be specific ones for given database.
    313. 

  313.      * 
    314. 

  314.      * @param filter
    315. 

  315.      *            the filter (for example the database name)
    316. 

  316.      * @return the specific features
    317. 

  317.      */
    318. 

  318.     public static Map<String, Object> getFilteredFeatures(String filter) {
    319. 

  319.         Map<String, Object> features = new HashMap<String, Object>();
    320. 

  320. 

  321.         for (Entry<SqlFeature, Object> entry : SqlDefaultFeatures.FEATURES.entrySet()) {
    322. 

  322.             features.put(entry.getKey().name(), entry.getValue());
    323. 

  323.         }
    324. 

  324.         if (filter != null) {
    325. 

  325.             features.put(SqlFeature.FILTER.name(), filter);
    326. 

  326.             Map<SqlFeature, Object> filteredFeatures = SqlDefaultFeatures.FILTERED_FEATURES.get(filter);
    327. 

  327.             if (filteredFeatures != null) {
    328. 

  328.                 for (Entry<SqlFeature, Object> entry : filteredFeatures.entrySet()) {
    329. 

  329.                     features.put(entry.getKey().name(), entry.getValue());
    330. 

  330.                 }
    331. 

  331.             }
    332. 

  332.         }
    333. 

  333. 

  334.         return features;
    335. 

  335.     }
    336. 

  336. }
    337.