org.jivesoftware.database.ProfiledConnection Maven / Gradle / Ivy
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/**
* $RCSfile$
* $Revision: 1113 $
* $Date: 2005-03-10 09:53:39 -0800 (Thu, 10 Mar 2005) $
*
* Copyright (C) 2004 Jive Software. All rights reserved.
*
* This software is published under the terms of the GNU Public License (GPL),
* a copy of which is included in this distribution.
*/
package org.jivesoftware.database;
import java.sql.*;
import java.util.Hashtable;
import java.util.Map;
/**
* Wraps a Connection object and collects statistics about the database queries
* that are performed.
*
* Statistics of the profiled Connections can be obtained from the static
* methods of this class. Instances of this class are the actual wrappers that
* perform profiling.
*
* @author Jive Software
*/
public class ProfiledConnection extends AbstractConnection {
public static enum Type {
/**
* Constant for SELECT database queries.
*/
select,
/**
* Constant for UPDATE database queries.
*/
update,
/**
* Constant for INSERT database queries.
*/
insert,
/**
* Constant for DELETE database queries.
*/
delete
}
private static long startInsertTime = 0;
private static long startUpdateTime = 0;
private static long startSelectTime = 0;
private static long startDeleteTime = 0;
private static long endInsertTime = 0;
private static long endUpdateTime = 0;
private static long endSelectTime = 0;
private static long endDeleteTime = 0;
private static long insertCount = 0;
private static long updateCount = 0;
private static long selectCount = 0;
private static long deleteCount = 0;
private static long totalInsertTime = 0;
private static long totalUpdateTime = 0;
private static long totalSelectTime = 0;
private static long totalDeleteTime = 0;
private static Map insertQueries =
new Hashtable();
private static Map updateQueries =
new Hashtable();
private static Map selectQueries =
new Hashtable();
private static Map deleteQueries =
new Hashtable();
/**
* Start profiling.
*/
public static void start() {
long now = System.currentTimeMillis();
startInsertTime = startUpdateTime = startSelectTime = startDeleteTime = now;
}
/**
* Stop profiling.
*/
public static void stop() {
endInsertTime = endUpdateTime = endSelectTime = endDeleteTime = 0;
}
/**
* Returns the total number database queries of a particular type performed.
* Valid types are ProfiledConnection.SELECT, ProfiledConnection.UPDATE,
* ProfiledConnection.INSERT, and ProfiledConnection.DELETE.
*
* @param type the type of query to get the count for.
* @return the number queries of type type performed.
*/
public static long getQueryCount(Type type) {
switch (type) {
case select:
return selectCount;
case update:
return updateCount;
case insert:
return insertCount;
case delete:
return deleteCount;
default:
throw new IllegalArgumentException("Invalid type");
}
}
/**
* Adds a query.
*
* @param type the type of the query.
* @param sql the insert sql string.
* @param time the length of time the query took in milliseconds
*/
public static void addQuery(Type type, String sql, long time) {
// Do nothing if we didn't receive a sql statement
if (sql == null || sql.equals("")) {
return;
}
// clean up sql to insert spaces after every ','
sql = reformatQuery(sql);
// remove values from query
sql = removeQueryValues(sql);
ProfiledConnectionEntry entry;
switch (type) {
case select:
selectCount++;
totalSelectTime += time;
entry = selectQueries.get(sql);
if (entry == null) {
entry = new ProfiledConnectionEntry(sql);
selectQueries.put(sql, entry);
}
break;
case update:
updateCount++;
totalUpdateTime += time;
entry = updateQueries.get(sql);
if (entry == null) {
entry = new ProfiledConnectionEntry(sql);
updateQueries.put(sql, entry);
}
break;
case insert:
insertCount++;
totalInsertTime += time;
entry = insertQueries.get(sql);
if (entry == null) {
entry = new ProfiledConnectionEntry(sql);
insertQueries.put(sql, entry);
}
break;
case delete:
deleteCount++;
totalDeleteTime += time;
entry = deleteQueries.get(sql);
if (entry == null) {
entry = new ProfiledConnectionEntry(sql);
deleteQueries.put(sql, entry);
}
break;
default:
throw new IllegalArgumentException("Invalid type");
}
entry.count++;
entry.totalTime += time;
}
/**
* Returns the average number of queries of a certain type that have been
* performed per second since profiling started. If profiling has been
* stopped, that moment in time is used for the calculation. Otherwise,
* the current moment in time is used.
*
* @param type the type of database query to check.
* @return the average number of queries of a certain typed performed per
* second.
*/
public static double getQueriesPerSecond(Type type) {
long count, start, end;
switch (type) {
case select:
count = selectCount;
start = startSelectTime;
end = endSelectTime;
break;
case update:
count = updateCount;
start = startUpdateTime;
end = endUpdateTime;
break;
case insert:
count = insertCount;
start = startInsertTime;
end = endInsertTime;
break;
case delete:
count = deleteCount;
start = startDeleteTime;
end = endDeleteTime;
break;
default:
throw new IllegalArgumentException("Invalid type");
}
// if no queries yet, return 0;
if (count == 0) {
return 0;
}
// If the profiling hasn't been stopped yet, we want to give
// profiling values up to the current time instead.
if (end == 0) {
end = System.currentTimeMillis();
}
// Compute the number of seconds
double time = (end - start) / 1000.0;
// Finally, return the average.
return count / time;
}
/**
* Returns the average amount of time spent executing the specified type
* of query.
*
* @param type the type of query.
* @return a double representing the average time spent executing the type
* of query.
*/
public static double getAverageQueryTime(Type type) {
long time, count;
switch (type) {
case select:
count = selectCount;
time = totalSelectTime;
break;
case update:
count = updateCount;
time = totalUpdateTime;
break;
case insert:
count = insertCount;
time = totalInsertTime;
break;
case delete:
count = deleteCount;
time = totalDeleteTime;
break;
default:
throw new IllegalArgumentException("Invalid type");
}
if (count != 0) {
return time / (double)count;
}
else {
return 0.0;
}
}
/**
* Returns the total amount of time in milliseconds spent doing a particular
* type of query. Note that this isn't necessarily representative of actual real
* time since db queries often occur in parallel.
*
* @param type the type of query to check.
* @return the number of milliseconds spent executing the specified type of
* query.
*/
public static long getTotalQueryTime(Type type) {
switch (type) {
case select:
return totalSelectTime;
case update:
return totalUpdateTime;
case insert:
return totalInsertTime;
case delete:
return totalDeleteTime;
default:
throw new IllegalArgumentException("Invalid type");
}
}
/**
* Returns an array of sorted queries (as ProfiledConnectionEntry objects) by type
*
* @param type the type of query to check
* @param sortByTime sort the resulting list by Time if true,
* otherwise sort by count if false (default)
* @return an array of ProfiledConnectionEntry objects
*/
public static ProfiledConnectionEntry[] getSortedQueries(Type type, boolean sortByTime) {
Map queries;
switch (type) {
case select:
queries = selectQueries;
break;
case update:
queries = updateQueries;
break;
case insert:
queries = insertQueries;
break;
case delete:
queries = deleteQueries;
break;
default:
throw new IllegalArgumentException("Invalid type");
}
// No queries, return null
if (queries.isEmpty()) {
return null;
}
ProfiledConnectionEntry [] result = queries.values().toArray(
new ProfiledConnectionEntry[queries.size()]);
quickSort(result, sortByTime, 0, result.length - 1);
return result;
}
/**
* Reset all statistics.
*/
public static void resetStatistics() {
startInsertTime = startUpdateTime = startSelectTime = startDeleteTime = 0;
endInsertTime = endUpdateTime = endSelectTime = endDeleteTime = 0;
insertCount = updateCount = selectCount = deleteCount = 0;
totalInsertTime = totalUpdateTime = totalSelectTime = totalDeleteTime = 0;
insertQueries.clear();
updateQueries.clear();
selectQueries.clear();
deleteQueries.clear();
}
/**
* @param entries entries
* @param sortByTime sort by time if true, otherwise sort by count
* @param first first index to sort on. Normally 0
* @param last last index to sort on. Normally length -1
*/
private static void quickSort(ProfiledConnectionEntry[] entries, boolean sortByTime, int first, int last) {
// do nothing if array contains fewer than two elements
if (first >= last || entries.length < 2) {
return;
}
swap(entries, first, (first + last) / 2);
int index = first;
for (int i = first + 1; i <= last; i++) {
if (sortByTime && ((entries[first].totalTime / entries[first].count) < (entries[i].totalTime / entries[i].count))) {
swap(entries, ++index, i);
}
else if (!sortByTime && entries[first].count < entries[i].count) {
swap(entries, ++index, i);
}
}
swap(entries, first, index);
quickSort(entries, sortByTime, first, index - 1);
quickSort(entries, sortByTime, index + 1, last);
}
private static void swap(Object[] list, int i, int j) {
Object tmp = list[i];
list[i] = list[j];
list[j] = tmp;
}
private static String removeQueryValues(String _sql) {
int length = _sql.length();
if (_sql.indexOf("=") == -1) {
return _sql;
}
StringBuilder sql = new StringBuilder(_sql);
boolean inValue = false;
boolean afterEquals = false;
boolean hasQuotes = false;
int startValue = -1;
int endValue = -1;
int charRemoved = 0;
for (int x = 0; x < length; x++) {
char c = _sql.charAt(x);
switch (c) {
case '=':
{
if (!afterEquals) {
afterEquals = true;
}
break;
}
case ' ':
{
if (!hasQuotes && inValue) {
endValue = x;
inValue = false;
hasQuotes = false;
afterEquals = false;
}
break;
}
case '\'':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
hasQuotes = true;
}
else if (afterEquals && inValue && hasQuotes) {
endValue = x + 1;
inValue = false;
hasQuotes = false;
afterEquals = false;
}
break;
}
case '-':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '+':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '0':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '1':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '2':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '3':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '4':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '5':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '6':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '7':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '8':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
case '9':
{
if (afterEquals && !inValue) {
startValue = x;
inValue = true;
}
break;
}
default:
{
if (afterEquals && !inValue) {
afterEquals = false;
}
}
}
if (x == length - 1 && afterEquals) {
endValue = x + 1;
}
if (startValue != -1 && endValue != -1) {
sql.replace(startValue - charRemoved, endValue - charRemoved, "?");
charRemoved += endValue - startValue - 1;
startValue = -1;
endValue = -1;
}
}
return sql.toString();
}
private static String reformatQuery(String _sql) {
int length = _sql.length();
int charAdded = 0;
StringBuilder sql = new StringBuilder(_sql);
for (int x = 0; x < length; x++) {
char c = _sql.charAt(x);
if (c == ',' && x < length - 1 && _sql.charAt(x + 1) != ' ') {
sql.replace(x + charAdded, x + 1 + charAdded, ", ");
charAdded++;
}
}
return sql.toString();
}
//--------------------- Connection Wrapping Code ---------------------//
/**
* Creates a new ProfiledConnection that wraps the specified connection.
*
* @param connection the Connection to wrap and collect stats for.
*/
public ProfiledConnection(Connection connection) {
super(connection);
}
public void close() throws SQLException {
// Close underlying connection.
if (connection != null) {
connection.close();
}
}
public Statement createStatement() throws SQLException {
// Returned a TimedStatement so that we can do db timings.
return new TimedStatement(connection.createStatement());
}
public PreparedStatement prepareStatement(String sql) throws SQLException {
// Returned a TimedPreparedStatement so that we can do db timings.
return new TimedPreparedStatement(connection.prepareStatement(sql), sql);
}
public Statement createStatement(int resultSetType, int resultSetConcurrency)
throws SQLException {
return new TimedStatement(connection.createStatement(resultSetType,
resultSetConcurrency));
}
public PreparedStatement prepareStatement(String sql, int resultSetType,
int resultSetConcurrency) throws SQLException {
return new TimedPreparedStatement(connection.prepareStatement(sql, resultSetType, resultSetConcurrency), sql);
}
public CallableStatement prepareCall(String sql) throws SQLException {
return new TimedCallableStatement(connection.prepareCall(sql), sql);
}
public CallableStatement prepareCall(String sql, int i, int i1) throws SQLException {
return new TimedCallableStatement(connection.prepareCall(sql, i, i1), sql);
}
/**
* An implementation of the Statement interface that wraps an underlying
* Statement object and performs timings of the database queries. The class
* does not handle batch queries but should generally work otherwise.
*/
class TimedStatement extends StatementWrapper {
private Statement stmt;
/**
* Creates a new TimedStatement that wraps stmt.
*
* @param stmt the statement.
*/
public TimedStatement(Statement stmt) {
super(stmt);
this.stmt = stmt;
}
public boolean execute(String sql) throws SQLException {
long t1 = System.currentTimeMillis();
boolean result = stmt.execute(sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, sql, t2 - t1);
}
else {
addQuery(Type.select, sql, t2 - t1);
}
return result;
}
public ResultSet executeQuery(String sql) throws SQLException {
long t1 = System.currentTimeMillis();
ResultSet result = stmt.executeQuery(sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, sql, t2 - t1);
}
else {
addQuery(Type.select, sql, t2 - t1);
}
return result;
}
public int executeUpdate(String sql) throws SQLException {
long t1 = System.currentTimeMillis();
int result = stmt.executeUpdate(sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, sql, t2 - t1);
}
else {
addQuery(Type.select, sql, t2 - t1);
}
return result;
}
}
/**
* An implementation of the PreparedStatement interface that wraps an
* underlying PreparedStatement object and performs timings of the database
* queries.
*/
class TimedPreparedStatement extends PreparedStatementWrapper {
private String sql;
private Type type = Type.select;
public TimedPreparedStatement(PreparedStatement pstmt, String sql) {
super(pstmt);
this.sql = sql;
// determine the type of query
String sqlL = sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
type = Type.insert;
}
else if (sqlL.startsWith("update")) {
type = Type.update;
}
else if (sqlL.startsWith("delete")) {
type = Type.delete;
}
else {
type = Type.select;
}
}
public boolean execute() throws SQLException {
// Perform timing of this method.
long t1 = System.currentTimeMillis();
boolean result = pstmt.execute();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
/*
* This is one of the methods that we wish to time
*/
public ResultSet executeQuery() throws SQLException {
long t1 = System.currentTimeMillis();
ResultSet result = pstmt.executeQuery();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
/*
* This is one of the methods that we wish to time
*/
public int executeUpdate() throws SQLException {
long t1 = System.currentTimeMillis();
int result = pstmt.executeUpdate();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
// The following methods are from the Statement class - the
// SuperInterface of PreparedStatement
// without these this class won't compile
public boolean execute(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
boolean result = pstmt.execute(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
public int[] executeBatch() throws SQLException {
long t1 = System.currentTimeMillis();
int[] result = pstmt.executeBatch();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
public ResultSet executeQuery(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
ResultSet result = pstmt.executeQuery(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
public int executeUpdate(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
int result = pstmt.executeUpdate(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
}
/**
* An implementation of the CallableStatement interface that wraps an
* underlying CallableStatement object and performs timings of the database
* queries.
*/
class TimedCallableStatement extends CallableStatementWrapper {
private String sql;
private Type type = Type.select;
public TimedCallableStatement(CallableStatement cstmt, String sql) {
super(cstmt);
this.sql = sql;
// determine the type of query
String sqlL = sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
type = Type.insert;
}
else if (sqlL.startsWith("update")) {
type = Type.update;
}
else if (sqlL.startsWith("delete")) {
type = Type.delete;
}
else {
type = Type.select;
}
}
public boolean execute() throws SQLException {
// Perform timing of this method.
long t1 = System.currentTimeMillis();
boolean result = cstmt.execute();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
/*
* This is one of the methods that we wish to time
*/
public ResultSet executeQuery() throws SQLException {
long t1 = System.currentTimeMillis();
ResultSet result = cstmt.executeQuery();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
/*
* This is one of the methods that we wish to time
*/
public int executeUpdate() throws SQLException {
long t1 = System.currentTimeMillis();
int result = cstmt.executeUpdate();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
// The following methods are from the Statement class - the
// SuperInterface of PreparedStatement
// without these this class won't compile
public boolean execute(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
boolean result = cstmt.execute(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
public int[] executeBatch() throws SQLException {
long t1 = System.currentTimeMillis();
int[] result = cstmt.executeBatch();
long t2 = System.currentTimeMillis();
switch (type) {
case select:
addQuery(Type.select, sql, t2 - t1);
break;
case update:
addQuery(Type.update, sql, t2 - t1);
break;
case insert:
addQuery(Type.insert, sql, t2 - t1);
break;
case delete:
addQuery(Type.delete, sql, t2 - t1);
break;
}
return result;
}
public ResultSet executeQuery(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
ResultSet result = cstmt.executeQuery(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
public int executeUpdate(String _sql) throws SQLException {
long t1 = System.currentTimeMillis();
int result = cstmt.executeUpdate(_sql);
long t2 = System.currentTimeMillis();
// determine the type of query
String sqlL = _sql.toLowerCase().trim();
if (sqlL.startsWith("insert")) {
addQuery(Type.insert, _sql, t2 - t1);
}
else if (sqlL.startsWith("update")) {
addQuery(Type.update, _sql, t2 - t1);
}
else if (sqlL.startsWith("delete")) {
addQuery(Type.delete, _sql, t2 - t1);
}
else {
addQuery(Type.select, _sql, t2 - t1);
}
return result;
}
}
}
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