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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.result;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.mysql.cj.Constants;
import com.mysql.cj.Messages;
import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.exceptions.DataConversionException;
import com.mysql.cj.log.ProfilerEvent;
import com.mysql.cj.log.ProfilerEventHandler;
import com.mysql.cj.log.ProfilerEventImpl;
import com.mysql.cj.protocol.InternalDate;
import com.mysql.cj.protocol.InternalTime;
import com.mysql.cj.protocol.InternalTimestamp;
import com.mysql.cj.util.LogUtils;
/**
* The default value factory provides a base class that can be used for value factories that do not support creation from every type. The default value factory
* will thrown an UnsupportedOperationException for every method and individual methods must be overridden by subclasses.
*
* @param
* value type
*/
public abstract class DefaultValueFactory implements ValueFactory {
private ProfilerEventHandler eventSink;
protected boolean jdbcCompliantTruncationForReads = true;
public DefaultValueFactory(PropertySet pset) {
this.pset = pset;
// TODO we always check initial value here, whatever the setupServerForTruncationChecks() does for writes.
// It also means that runtime changes of this variable have no effect on reads.
this.jdbcCompliantTruncationForReads = this.pset.getBooleanProperty(PropertyKey.jdbcCompliantTruncation).getInitialValue();
}
protected PropertySet pset = null;
@Override
public void setPropertySet(PropertySet pset) {
this.pset = pset;
}
protected T unsupported(String sourceType) {
throw new DataConversionException(Messages.getString("ResultSet.UnsupportedConversion", new Object[] { sourceType, getTargetTypeName() }));
}
public T createFromDate(InternalDate idate) {
return unsupported("DATE");
}
public T createFromTime(InternalTime it) {
return unsupported("TIME");
}
public T createFromTimestamp(InternalTimestamp its) {
return unsupported("TIMESTAMP");
}
public T createFromLong(long l) {
return unsupported("LONG");
}
public T createFromBigInteger(BigInteger i) {
return unsupported("BIGINT");
}
public T createFromDouble(double d) {
return unsupported("DOUBLE");
}
public T createFromBigDecimal(BigDecimal d) {
return unsupported("DECIMAL");
}
public T createFromBit(byte[] bytes, int offset, int length) {
return unsupported("BIT");
}
@Override
public T createFromYear(long l) {
return unsupported("YEAR");
}
public T createFromNull() {
return null;
}
public ValueFactory setEventSink(ProfilerEventHandler eventSink) {
this.eventSink = eventSink;
return this;
}
protected void issueConversionViaParsingWarning() {
// TODO context information for the profiler event is unavailable here.
// Context information should be provided at higher levels. this includes catalog, query, rs metadata, etc
if (this.eventSink == null) {
return;
}
String message = Messages.getString("ResultSet.CostlyConversion",
new Object[] { getTargetTypeName(), -1, "", "", "", "", "", "" });
this.eventSink.consumeEvent(new ProfilerEventImpl(ProfilerEvent.TYPE_WARN, "", "", -1, -1, -1, System.currentTimeMillis(), 0,
Constants.MILLIS_I18N, null, LogUtils.findCallingClassAndMethod(new Throwable()), message));
}
}