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    <p>If anyone plan to use this implementation, You might wanna <a href="http://www.cs.mun.ca/~michael/java/jdk1.1-beta2-docs/guide/jdbc/mapping.doc.html" rel="nofollow">check this out</a> <a href="http://docs.oracle.com/javase/1.4.2/docs/guide/jdbc/getstart/mapping.html" rel="nofollow">and this</a></p> <p>This is my version of that convertion code:</p> <pre><code>public class ResultSetConverter { public static JSONArray convert(ResultSet rs) throws SQLException, JSONException { JSONArray json = new JSONArray(); ResultSetMetaData rsmd = rs.getMetaData(); int numColumns = rsmd.getColumnCount(); while (rs.next()) { JSONObject obj = new JSONObject(); for (int i = 1; i &lt; numColumns + 1; i++) { String column_name = rsmd.getColumnName(i); if (rsmd.getColumnType(i) == java.sql.Types.ARRAY) { obj.put(column_name, rs.getArray(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.BIGINT) { obj.put(column_name, rs.getLong(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.REAL) { obj.put(column_name, rs.getFloat(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.BOOLEAN) { obj.put(column_name, rs.getBoolean(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.BLOB) { obj.put(column_name, rs.getBlob(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.DOUBLE) { obj.put(column_name, rs.getDouble(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.FLOAT) { obj.put(column_name, rs.getDouble(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.INTEGER) { obj.put(column_name, rs.getInt(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.NVARCHAR) { obj.put(column_name, rs.getNString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.VARCHAR) { obj.put(column_name, rs.getString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.CHAR) { obj.put(column_name, rs.getString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.NCHAR) { obj.put(column_name, rs.getNString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.LONGNVARCHAR) { obj.put(column_name, rs.getNString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.LONGVARCHAR) { obj.put(column_name, rs.getString(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.TINYINT) { obj.put(column_name, rs.getByte(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.SMALLINT) { obj.put(column_name, rs.getShort(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.DATE) { obj.put(column_name, rs.getDate(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.TIME) { obj.put(column_name, rs.getTime(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.TIMESTAMP) { obj.put(column_name, rs.getTimestamp(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.BINARY) { obj.put(column_name, rs.getBytes(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.VARBINARY) { obj.put(column_name, rs.getBytes(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.LONGVARBINARY) { obj.put(column_name, rs.getBinaryStream(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.BIT) { obj.put(column_name, rs.getBoolean(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.CLOB) { obj.put(column_name, rs.getClob(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.NUMERIC) { obj.put(column_name, rs.getBigDecimal(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.DECIMAL) { obj.put(column_name, rs.getBigDecimal(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.DATALINK) { obj.put(column_name, rs.getURL(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.REF) { obj.put(column_name, rs.getRef(column_name)); } else if (rsmd.getColumnType(i) == java.sql.Types.STRUCT) { obj.put(column_name, rs.getObject(column_name)); // must be a custom mapping consists of a class that implements the interface SQLData and an entry in a java.util.Map object. } else if (rsmd.getColumnType(i) == java.sql.Types.DISTINCT) { obj.put(column_name, rs.getObject(column_name)); // must be a custom mapping consists of a class that implements the interface SQLData and an entry in a java.util.Map object. } else if (rsmd.getColumnType(i) == java.sql.Types.JAVA_OBJECT) { obj.put(column_name, rs.getObject(column_name)); } else { obj.put(column_name, rs.getString(i)); } } json.put(obj); } return json; } } </code></pre>
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    1. POMost efficient conversion of ResultSet to JSON?
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