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/*
* Copyright (c) 2015, 2020, Oracle and/or its affiliates.
*
* 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;
import java.io.IOException;
import java.util.Iterator;
import java.util.Spliterators;
import java.util.concurrent.CompletableFuture;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collector;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
import com.mysql.cj.conf.HostInfo;
import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.exceptions.CJCommunicationsException;
import com.mysql.cj.protocol.ColumnDefinition;
import com.mysql.cj.protocol.Message;
import com.mysql.cj.protocol.ResultBuilder;
import com.mysql.cj.protocol.x.StatementExecuteOkBuilder;
import com.mysql.cj.protocol.x.XProtocol;
import com.mysql.cj.protocol.x.XProtocolError;
import com.mysql.cj.protocol.x.XProtocolRowInputStream;
import com.mysql.cj.result.Row;
import com.mysql.cj.xdevapi.PreparableStatement;
public class MysqlxSession extends CoreSession {
public MysqlxSession(HostInfo hostInfo, PropertySet propSet) {
super(hostInfo, propSet);
// create protocol instance
this.protocol = new XProtocol(hostInfo, propSet);
this.messageBuilder = this.protocol.getMessageBuilder();
this.protocol.connect(hostInfo.getUser(), hostInfo.getPassword(), hostInfo.getDatabase());
}
public MysqlxSession(XProtocol prot) {
super(null, prot.getPropertySet());
this.protocol = prot;
this.messageBuilder = this.protocol.getMessageBuilder();
}
@Override
public String getProcessHost() {
return this.protocol.getSocketConnection().getHost();
}
public int getPort() {
return this.protocol.getSocketConnection().getPort();
}
public XProtocol getProtocol() {
return (XProtocol) this.protocol;
}
@Override
public void quit() {
try {
this.protocol.close();
} catch (IOException ex) {
throw new CJCommunicationsException(ex);
}
super.quit();
}
public boolean isClosed() {
return !((XProtocol) this.protocol).isOpen();
}
/**
* Check if current session is using a MySQL server that supports prepared statements.
*
* @return
* {@code true} if the MySQL server in use supports prepared statements
*/
public boolean supportsPreparedStatements() {
return ((XProtocol) this.protocol).supportsPreparedStatements();
}
/**
* Check if enough statements were executed in the underlying MySQL server so that another prepare statement attempt should be done.
*
* @return
* {@code true} if enough executions have been done since last time a prepared statement failed to be prepared
*/
public boolean readyForPreparingStatements() {
return ((XProtocol) this.protocol).readyForPreparingStatements();
}
/**
* Return an id to be used as a client-managed prepared statement id.
*
* @param preparableStatement
* {@link PreparableStatement}
* @return a new identifier to be used as prepared statement id
*/
public int getNewPreparedStatementId(PreparableStatement preparableStatement) {
return ((XProtocol) this.protocol).getNewPreparedStatementId(preparableStatement);
}
/**
* Free a prepared statement id so that it can be reused.
*
* @param preparedStatementId
* the prepared statement id to release
*/
public void freePreparedStatementId(int preparedStatementId) {
((XProtocol) this.protocol).freePreparedStatementId(preparedStatementId);
}
/**
* Propagate to the underlying protocol instance that preparing a statement on the connected server failed.
*
* @param preparedStatementId
* the id of the prepared statement that failed to be prepared
* @param e
* {@link XProtocolError}
* @return
* {@code true} if the exception was properly handled
*/
public boolean failedPreparingStatement(int preparedStatementId, XProtocolError e) {
return ((XProtocol) this.protocol).failedPreparingStatement(preparedStatementId, e);
}
public RES query(M message, Predicate rowFilter, Function rowMapper, Collector collector) {
this.protocol.send(message, 0);
ColumnDefinition metadata = this.protocol.readMetadata();
Iterator ris = new XProtocolRowInputStream(metadata, (XProtocol) this.protocol, null);
Stream stream = StreamSupport.stream(Spliterators.spliteratorUnknownSize(ris, 0), false);
if (rowFilter != null) {
stream = stream.filter(rowFilter);
}
RES result = stream.map(rowMapper).collect(collector);
this.protocol.readQueryResult(new StatementExecuteOkBuilder());
return result;
}
public R query(M message, ResultBuilder resultBuilder) {
return ((XProtocol) this.protocol).query(message, resultBuilder);
}
public CompletableFuture queryAsync(M message, ResultBuilder resultBuilder) {
return ((XProtocol) this.protocol).queryAsync(message, resultBuilder);
}
}
