package com.tesora.dve.upgrade;
/*
* #%L
* Tesora Inc.
* Database Virtualization Engine
* %%
* Copyright (C) 2011 - 2014 Tesora Inc.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* #L%
*/
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import com.tesora.dve.common.DBHelper;
import com.tesora.dve.sql.util.Functional;
import com.tesora.dve.sql.util.UnaryFunction;
public abstract class StateItemSet {
protected final String kernel;
public StateItemSet(String kern) {
kernel = kern;
}
public StateItemSet build(SchemaStateQuery sqs, DBHelper helper, Map<String,String> params) throws Throwable {
sqs.build(helper, params, this);
return this;
}
public abstract void take(List<String> keyCols, List<Object> valueCols);
public abstract void collectDifferences(StateItemSet other, List<String> messages);
public abstract boolean isEmpty();
static String buildMessage(Object[] values) {
return Functional.join(Arrays.asList(values), ",", new UnaryFunction<String,Object>() {
@Override
public String evaluate(Object object) {
if (object == null) return "(null)";
return object.toString();
}
});
}
}