JDBC: Handle ResultSet#getBoolean with integer values (1=true,0=false)

[eolivelli]

BUG REPORT

1. Please describe the issue you observed:
   getBoolean() on a integer column returns always "false" because we are using Boolean.parseBoolean.

These are the official JDBC specs:

 /**
     * Retrieves the value of the designated column in the current row
     * of this <code>ResultSet</code> object as
     * a <code>boolean</code> in the Java programming language.
     *
     * <P>If the designated column has a datatype of CHAR or VARCHAR
     * and contains a "0" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
     * and contains  a 0, a value of <code>false</code> is returned.  If the designated column has a datatype
     * of CHAR or VARCHAR
     * and contains a "1" or has a datatype of BIT, TINYINT, SMALLINT, INTEGER or BIGINT
     * and contains  a 1, a value of <code>true</code> is returned.
     *
     * @param columnIndex the first column is 1, the second is 2, ...
     * @return the column value; if the value is SQL <code>NULL</code>, the
     * value returned is <code>false</code>
     * @exception SQLException if the columnIndex is not valid;
     * if a database access error occurs or this method is
     *            called on a closed result set
     */