/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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/>.
*/
package com.foundationdb.server.types.common.funcs;
import com.foundationdb.server.error.UnsupportedSQLException;
import com.foundationdb.server.types.LazyList;
import com.foundationdb.server.types.TClass;
import com.foundationdb.server.types.TExecutionContext;
import com.foundationdb.server.types.TOverloadResult;
import com.foundationdb.server.types.TScalar;
import com.foundationdb.server.types.value.ValueSource;
import com.foundationdb.server.types.value.ValueTarget;
import com.foundationdb.server.types.texpressions.TInputSetBuilder;
import com.foundationdb.server.types.texpressions.TScalarBase;
public class FullTextSearch extends TScalarBase
{
public static TScalar[] create(TClass booleanType, TClass stringType) {
return new TScalar[] {
new FullTextSearch(booleanType, null),
new FullTextSearch(booleanType, stringType),
};
}
private final TClass booleanType, stringType;
private FullTextSearch(TClass booleanType, TClass stringType) {
this.booleanType = booleanType;
this.stringType = stringType;
}
@Override
protected void buildInputSets(TInputSetBuilder builder)
{
if (stringType == null)
builder.covers(booleanType, 0);
else
builder.covers(stringType, 0).covers(stringType, 1);
}
@Override
protected void doEvaluate(TExecutionContext context, LazyList<? extends ValueSource> inputs, ValueTarget output)
{
throw new UnsupportedSQLException("This query is not supported, its definition " +
"is used solely for optimization purposes.");
}
@Override
public String displayName()
{
return "full_text_search";
}
@Override
public TOverloadResult resultType()
{
return TOverloadResult.fixed(booleanType);
}
}