/*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package org.jooq.impl;
import org.jooq.Configuration;
import org.jooq.Field;
/**
* @author Lukas Eder
*/
final class Nvl<T> extends AbstractFunction<T> {
/**
* Generated UID
*/
private static final long serialVersionUID = -7273879239726265322L;
private final Field<T> arg1;
private final Field<T> arg2;
Nvl(Field<T> arg1, Field<T> arg2) {
super("nvl", arg1.getDataType(), arg1, arg2);
this.arg1 = arg1;
this.arg2 = arg2;
}
@Override
final Field<T> getFunction0(Configuration configuration) {
switch (configuration.family()) {
case H2:
case HSQLDB:
return DSL.field("{nvl}({0}, {1})", getDataType(), arg1, arg2);
case DERBY:
case POSTGRES:
return DSL.field("{coalesce}({0}, {1})", getDataType(), arg1, arg2);
case MARIADB:
case MYSQL:
case SQLITE:
return DSL.field("{ifnull}({0}, {1})", getDataType(), arg1, arg2);
default:
return DSL.when(arg1.isNotNull(), arg1).otherwise(arg2);
}
}
}