?
java.sql.Connection的close方法究竟干了啥（以MySQL为例）(三)
rEvent(ProfilerEvent.TYPE_WARN, "", this.getCatalog(), this.getId(), -1, -1, System
.currentTimeMillis(), 0, Constants.MILLIS_I18N, null, this.pointOfOrigin, message));
}
long connectionLifeTime = System.currentTimeMillis() - this.connectionCreationTimeMillis;
if (connectionLifeTime < 500) {
String message = "Connection lifetime of < .5 seconds. You might be un-necessarily creating short-lived connections and should investigate connection pooling to be more efficient.";
this.eventSink.consumeEvent(new ProfilerEvent(ProfilerEvent.TYPE_WARN, "", this.getCatalog(), this.getId(), -1, -1, System
.currentTimeMillis(), 0, Constants.MILLIS_I18N, null, this.pointOfOrigin, message));
}
}
try {
closeAllOpenStatements();
} catch (SQLException ex) {
sqlEx = ex;
}
if (this.io != null) {
try {
this.io.quit();
} catch (Exception e) {
}
}
} else {
this.io.forceClose();
}
if (this.statementInterceptors != null) {
for (int i = 0; i < this.statementInterceptors.size(); i++) {
this.statementInterceptors.get(i).destroy();
}
}
if (this.exceptionInterceptor != null) {
this.exceptionInterceptor.destroy();
}
} finally {
this.openStatements = null;
if (this.io != null) {
this.io.releaseResources();
this.io = null;
}
this.statementInterceptors = null;
this.exceptionInterceptor = null;
ProfilerEventHandlerFactory.removeInstance(this);
synchronized (getConnectionMutex()) {
if (this.cancelTimer != null) {
this.cancelTimer.cancel();
}
}
this.isClosed = true;
}
if (sqlEx != null) {
throw sqlEx;
}
}