/*
* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj;
//TODO should not be protocol-specific
public class
ClientPreparedQuery extends
AbstractPreparedQuery<
ClientPreparedQueryBindings> {
public
ClientPreparedQuery(
NativeSession sess) {
super(
sess);
}
/**
* Computes the maximum parameter set size, and entire batch size given
* the number of arguments in the batch.
*
*/
@
Override
protected long[]
computeMaxParameterSetSizeAndBatchSize(int
numBatchedArgs) {
long
sizeOfEntireBatch = 0;
long
maxSizeOfParameterSet = 0;
for (int
i = 0;
i <
numBatchedArgs;
i++) {
ClientPreparedQueryBindings qBindings = (
ClientPreparedQueryBindings) this.
batchedArgs.
get(
i);
BindValue[]
bindValues =
qBindings.
getBindValues();
long
sizeOfParameterSet = 0;
for (int
j = 0;
j <
bindValues.length;
j++) {
if (!
bindValues[
j].
isNull()) {
if (
bindValues[
j].
isStream()) {
long
streamLength =
bindValues[
j].
getStreamLength();
if (
streamLength != -1) {
sizeOfParameterSet +=
streamLength * 2; // for safety in escaping
} else {
int
paramLength =
qBindings.
getBindValues()[
j].
getByteValue().length;
sizeOfParameterSet +=
paramLength;
}
} else {
sizeOfParameterSet +=
qBindings.
getBindValues()[
j].
getByteValue().length;
}
} else {
sizeOfParameterSet += 4; // for NULL literal in SQL
}
}
//
// Account for static part of values clause
// This is a little naive, because the ?s will be replaced but it gives us some padding, and is less housekeeping to ignore them. We're looking
// for a "fuzzy" value here anyway
//
if (this.
parseInfo.
getValuesClause() != null) {
sizeOfParameterSet += this.
parseInfo.
getValuesClause().
length() + 1;
} else {
sizeOfParameterSet += this.
originalSql.
length() + 1;
}
sizeOfEntireBatch +=
sizeOfParameterSet;
if (
sizeOfParameterSet >
maxSizeOfParameterSet) {
maxSizeOfParameterSet =
sizeOfParameterSet;
}
}
return new long[] {
maxSizeOfParameterSet,
sizeOfEntireBatch };
}
}