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JDBC Type 4 driver for MySQL
/*
* 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.xdevapi;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;
import com.mysql.cj.Messages;
import com.mysql.cj.MysqlxSession;
import com.mysql.cj.conf.ConnectionUrl;
import com.mysql.cj.conf.DefaultPropertySet;
import com.mysql.cj.conf.HostInfo;
import com.mysql.cj.conf.PropertyDefinitions;
import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.conf.RuntimeProperty;
import com.mysql.cj.exceptions.MysqlErrorNumbers;
import com.mysql.cj.protocol.x.XMessage;
import com.mysql.cj.protocol.x.XMessageBuilder;
import com.mysql.cj.protocol.x.XProtocol;
import com.mysql.cj.protocol.x.XProtocolError;
import com.mysql.cj.result.Row;
import com.mysql.cj.result.StringValueFactory;
import com.mysql.cj.util.StringUtils;
/**
* {@link Session} implementation.
*/
public class SessionImpl implements Session {
protected MysqlxSession session;
protected String defaultSchemaName;
private XMessageBuilder xbuilder;
/**
* Constructor.
*
* @param hostInfo
* {@link HostInfo} instance
*/
public SessionImpl(HostInfo hostInfo) {
PropertySet pset = new DefaultPropertySet();
pset.initializeProperties(hostInfo.exposeAsProperties());
this.session = new MysqlxSession(hostInfo, pset);
this.defaultSchemaName = hostInfo.getDatabase();
this.xbuilder = (XMessageBuilder) this.session. getMessageBuilder();
}
public SessionImpl(XProtocol prot) {
this.session = new MysqlxSession(prot);
this.defaultSchemaName = prot.defaultSchemaName;
this.xbuilder = (XMessageBuilder) this.session. getMessageBuilder();
}
protected SessionImpl() {
}
public List getSchemas() {
Function rowToName = r -> r.getValue(0, new StringValueFactory());
Function rowToSchema = rowToName.andThen(n -> new SchemaImpl(this.session, this, n));
return this.session.query(this.xbuilder.buildSqlStatement("select schema_name from information_schema.schemata"), null, rowToSchema,
Collectors.toList());
}
public Schema getSchema(String schemaName) {
return new SchemaImpl(this.session, this, schemaName);
}
public String getDefaultSchemaName() {
return this.defaultSchemaName;
}
public Schema getDefaultSchema() {
if (this.defaultSchemaName == null || this.defaultSchemaName.length() == 0) {
return null;
}
return new SchemaImpl(this.session, this, this.defaultSchemaName);
}
public Schema createSchema(String schemaName) {
StringBuilder stmtString = new StringBuilder("CREATE DATABASE ");
stmtString.append(StringUtils.quoteIdentifier(schemaName, true));
this.session.sendMessage(this.xbuilder.buildSqlStatement(stmtString.toString()));
return getSchema(schemaName);
}
public Schema createSchema(String schemaName, boolean reuseExistingObject) {
try {
return createSchema(schemaName);
} catch (XProtocolError ex) {
if (ex.getErrorCode() == MysqlErrorNumbers.ER_DB_CREATE_EXISTS) {
return getSchema(schemaName);
}
throw ex;
}
}
public void dropSchema(String schemaName) {
StringBuilder stmtString = new StringBuilder("DROP DATABASE ");
stmtString.append(StringUtils.quoteIdentifier(schemaName, true));
this.session.sendMessage(this.xbuilder.buildSqlStatement(stmtString.toString()));
}
public void startTransaction() {
this.session.sendMessage(this.xbuilder.buildSqlStatement("START TRANSACTION"));
}
public void commit() {
this.session.sendMessage(this.xbuilder.buildSqlStatement("COMMIT"));
}
public void rollback() {
this.session.sendMessage(this.xbuilder.buildSqlStatement("ROLLBACK"));
}
@Override
public String setSavepoint() {
return setSavepoint(StringUtils.getUniqueSavepointId());
}
@Override
public String setSavepoint(String name) {
if (name == null || name.trim().length() == 0) {
throw new XDevAPIError(Messages.getString("XSession.0", new String[] { "name" }));
}
this.session.sendMessage(this.xbuilder.buildSqlStatement("SAVEPOINT " + StringUtils.quoteIdentifier(name, true)));
return name;
}
@Override
public void rollbackTo(String name) {
if (name == null || name.trim().length() == 0) {
throw new XDevAPIError(Messages.getString("XSession.0", new String[] { "name" }));
}
this.session.sendMessage(this.xbuilder.buildSqlStatement("ROLLBACK TO " + StringUtils.quoteIdentifier(name, true)));
}
@Override
public void releaseSavepoint(String name) {
if (name == null || name.trim().length() == 0) {
throw new XDevAPIError(Messages.getString("XSession.0", new String[] { "name" }));
}
this.session.sendMessage(this.xbuilder.buildSqlStatement("RELEASE SAVEPOINT " + StringUtils.quoteIdentifier(name, true)));
}
public String getUri() {
PropertySet pset = this.session.getPropertySet();
StringBuilder sb = new StringBuilder(ConnectionUrl.Type.XDEVAPI_SESSION.getScheme());
sb.append("//").append(this.session.getProcessHost()).append(":").append(this.session.getPort()).append("/").append(this.defaultSchemaName).append("?");
boolean isFirstParam = true;
for (PropertyKey propKey : PropertyDefinitions.PROPERTY_KEY_TO_PROPERTY_DEFINITION.keySet()) {
RuntimeProperty propToGet = pset.getProperty(propKey);
if (propToGet.isExplicitlySet()) {
String propValue = propToGet.getStringValue();
Object defaultValue = propToGet.getPropertyDefinition().getDefaultValue();
if (defaultValue == null && !StringUtils.isNullOrEmpty(propValue) || defaultValue != null && propValue == null
|| defaultValue != null && propValue != null && !propValue.equals(defaultValue.toString())) {
if (isFirstParam) {
isFirstParam = false;
} else {
sb.append("&");
}
sb.append(propKey.getKeyName());
sb.append("=");
sb.append(propValue);
}
// TODO custom properties?
}
}
// TODO modify for multi-host connections
return sb.toString();
}
public boolean isOpen() {
return !this.session.isClosed();
}
public void close() {
this.session.quit();
}
public SqlStatementImpl sql(String sql) {
return new SqlStatementImpl(this.session, sql);
}
public MysqlxSession getSession() {
return this.session;
}
}