org.jooq.impl.FirstValue Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* Apache-2.0 license and offer limited warranties, support, maintenance, and
* commercial database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq.impl;
import static org.jooq.impl.Names.N_FIRST_VALUE;
import java.util.function.BiFunction;
import java.util.function.Predicate;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.Function1;
import org.jooq.QueryPart;
// ...
// ...
/**
* @author Lukas Eder
*/
final class FirstValue extends AbstractWindowFunction implements QOM.FirstValue {
final Field field;
FirstValue(Field field) {
super(N_FIRST_VALUE, field.getDataType().null_());
this.field = field;
}
@Override
public final void accept(Context ctx) {
switch (ctx.family()) {
default:
ctx.visit(N_FIRST_VALUE).sql('(').visit(field);
ctx.sql(')');
acceptNullTreatment(ctx);
break;
}
acceptOverClause(ctx);
}
// -------------------------------------------------------------------------
// XXX: Query Object Model
// -------------------------------------------------------------------------
@Override
public final Field $field() {
return field;
}
}