[APIS-877] Improve JDBC driver to use statement cache

[airnet73]

http://jira.cubrid.org/browse/APIS-877

Purpose
The result cache is working in JDBC but the PreparedStatement cache does not work.
PreparedStatement caching is required to improve query performance.

Implementation
To use the cache, you must use three properties.

• usePreparedStmtCache

  • If you want Prepared Statement caching, set it to True.
  • usePreparedStmtCache=true (defulat:false)

• preparedStmtCacheSize

  • If Prepared Statment caching is enabled, set the number to be cached.
  • prepareStatementCacheSize=1024 (defulat:25, min:1, max:2147483647)

• preparedStmtCacheSqlLimit

  • If Prepared Statment caching is enabled, set the SQL text to be cached.
  • preparedStmtCacheSqlLimit = 1024 (default:256, min:1, max:2147483647)

Remarks
N/A