/*
* 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.
Messages;
import com.mysql.cj.conf.
PropertyKey;
import com.mysql.cj.conf.
PropertySet;
import com.mysql.cj.exceptions.
DataConversionException;
import com.mysql.cj.protocol.
InternalDate;
import com.mysql.cj.protocol.
InternalTime;
import com.mysql.cj.protocol.
InternalTimestamp;
/**
* 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 <T>
* value type
*/
public abstract class
DefaultValueFactory<T> implements
ValueFactory<T> {
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;
}
}