/*
* Copyright (c) 2015, 2018, 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.protocol.x;
import java.util.
ArrayList;
import java.util.
List;
import java.util.concurrent.
CompletableFuture;
import java.util.function.
BiFunction;
import java.util.function.
Function;
import java.util.function.
Supplier;
import com.mysql.cj.protocol.
ColumnDefinition;
import com.mysql.cj.protocol.
ResultListener;
import com.mysql.cj.result.
BufferedRowList;
import com.mysql.cj.result.
Row;
import com.mysql.cj.result.
RowList;
/**
* Create an entire (buffered) result from the data fed to this result listener.
*
* @param <RES_T>
* The type of result that will be created (and posted to the future)
*/
public class
ResultCreatingResultListener<RES_T> implements
ResultListener<
StatementExecuteOk> {
private
ColumnDefinition metadata;
private
List<
Row>
rows = new
ArrayList<>();
private
Function<
ColumnDefinition,
BiFunction<
RowList,
Supplier<
StatementExecuteOk>, RES_T>>
resultCtor;
private
CompletableFuture<RES_T>
future;
public
ResultCreatingResultListener(
Function<
ColumnDefinition,
BiFunction<
RowList,
Supplier<
StatementExecuteOk>, RES_T>>
resultCtor,
CompletableFuture<RES_T>
future) {
this.
resultCtor =
resultCtor;
this.
future =
future;
}
public void
onMetadata(
ColumnDefinition metadataFields) {
this.
metadata =
metadataFields;
}
public void
onRow(
Row r) {
this.
rows.
add(
r);
}
public void
onComplete(
StatementExecuteOk ok) {
RowList rowList = new
BufferedRowList(this.
rows);
RES_T
result = this.
resultCtor.
apply(this.
metadata).
apply(
rowList, () ->
ok);
this.
future.
complete(
result);
}
public void
onException(
Throwable t) {
this.
future.
completeExceptionally(
t);
}
}