com.mysql.cj.protocol.x.XProtocolRow Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of mysql-connector-java
Show all versions of mysql-connector-java
JDBC Type 4 driver for MySQL
/*
* Copyright (c) 2015, 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.protocol.x;
import com.google.protobuf.ByteString;
import com.mysql.cj.MysqlType;
import com.mysql.cj.exceptions.DataReadException;
import com.mysql.cj.protocol.ColumnDefinition;
import com.mysql.cj.result.Field;
import com.mysql.cj.result.ValueFactory;
import com.mysql.cj.x.protobuf.MysqlxResultset.Row;
/**
* ProtocolEntity representing an X Protocol result row.
*/
public class XProtocolRow implements com.mysql.cj.result.Row {
private ColumnDefinition metadata;
private Row rowMessage;
private boolean wasNull = false;
public XProtocolRow(Row rowMessage) {
this.rowMessage = rowMessage;
}
@Override
public com.mysql.cj.result.Row setMetadata(ColumnDefinition columnDefinition) {
this.metadata = columnDefinition;
return this;
}
public T getValue(int columnIndex, ValueFactory vf) {
if (columnIndex >= this.metadata.getFields().length) {
throw new DataReadException("Invalid column");
}
Field f = this.metadata.getFields()[columnIndex];
ByteString byteString = this.rowMessage.getField(columnIndex);
// for debugging
//System.err.println("getValue bytes = " + com.mysql.cj.core.util.StringUtils.dumpAsHex(byteString.toByteArray(), byteString.toByteArray().length));
//try {
if (byteString.size() == 0) {
T result = vf.createFromNull();
this.wasNull = result == null;
return result;
}
// TODO: implement remaining types when server is ready
switch (f.getMysqlTypeId()) {
case MysqlType.FIELD_TYPE_BIT:
this.wasNull = false;
return XProtocolDecoder.instance.decodeBit(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_DATETIME:
this.wasNull = false;
return XProtocolDecoder.instance.decodeTimestamp(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_DOUBLE:
this.wasNull = false;
return XProtocolDecoder.instance.decodeDouble(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_ENUM:
this.wasNull = false;
return XProtocolDecoder.instance.decodeByteArray(byteString.toByteArray(), 0, byteString.size(), f, vf);
case MysqlType.FIELD_TYPE_FLOAT:
this.wasNull = false;
return XProtocolDecoder.instance.decodeFloat(byteString.toByteArray(), 0, byteString.size(), vf);
//case MysqlType.FIELD_TYPE_GEOMETRY:
//mysqlTypeToDecoderFunction.put(MysqlType.FIELD_TYPE_GEOMETRY, instance::decodeGeometry);
//break;
case MysqlType.FIELD_TYPE_JSON:
this.wasNull = false;
// TODO: do we need to really do anything special with JSON? just return correct stuff with getObject() I guess
return XProtocolDecoder.instance.decodeByteArray(byteString.toByteArray(), 0, byteString.size(), f, vf);
case MysqlType.FIELD_TYPE_LONGLONG:
// X Protocol uses 64-bit ints for everything
this.wasNull = false;
if (f.isUnsigned()) {
return XProtocolDecoder.instance.decodeUInt8(byteString.toByteArray(), 0, byteString.size(), vf);
}
return XProtocolDecoder.instance.decodeInt8(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_NEWDECIMAL:
this.wasNull = false;
return XProtocolDecoder.instance.decodeDecimal(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_SET:
this.wasNull = false;
return XProtocolDecoder.instance.decodeSet(byteString.toByteArray(), 0, byteString.size(), f, vf);
//return XProtocolDecoder.instance.decodeByteArray(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_TIME:
this.wasNull = false;
return XProtocolDecoder.instance.decodeTime(byteString.toByteArray(), 0, byteString.size(), vf);
case MysqlType.FIELD_TYPE_VARCHAR:
this.wasNull = false;
return XProtocolDecoder.instance.decodeByteArray(byteString.toByteArray(), 0, byteString.size(), f, vf);
case MysqlType.FIELD_TYPE_VAR_STRING:
this.wasNull = false;
return XProtocolDecoder.instance.decodeByteArray(byteString.toByteArray(), 0, byteString.size(), f, vf);
default:
throw new DataReadException("Unknown MySQL type constant: " + f.getMysqlTypeId());
}
// DecoderFunction decoderFunction = XProtocolDecoder.MYSQL_TYPE_TO_DECODER_FUNCTION.get(f.getMysqlTypeId());
// if (decoderFunction != null) {
// this.wasNull = false;
// return decoderFunction.apply(CodedInputStream.newInstance(byteString.toByteArray()), vf);
// }
// throw new DataReadException("Unknown MySQL type constant: " + f.getMysqlTypeId());
//} catch (IOException ex) {
// if reading the protobuf fields fails (CodedInputStream)
// throw new DataReadException(ex);
//}
}
public boolean getNull(int columnIndex) {
ByteString byteString = this.rowMessage.getField(columnIndex);
this.wasNull = byteString.size() == 0;
return this.wasNull;
}
public boolean wasNull() {
return this.wasNull;
}
}