org.jooq.impl.Sign Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* 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
*
*
*
*
*
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*
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*
*/
package org.jooq.impl;
import static org.jooq.impl.DSL.field;
import static org.jooq.impl.DSL.function;
import static org.jooq.impl.DSL.one;
import static org.jooq.impl.DSL.zero;
import org.jooq.Configuration;
import org.jooq.Field;
/**
* @author Lukas Eder
*/
final class Sign extends AbstractFunction {
/**
* Generated UID
*/
private static final long serialVersionUID = -7273879239726265322L;
private final Field argument;
Sign(Field argument) {
super("sign", SQLDataType.INTEGER, argument);
this.argument = argument;
}
@SuppressWarnings("unchecked")
@Override
final Field getFunction0(Configuration configuration) {
switch (configuration.dialect()) {
case SQLITE:
return DSL
.when(((Field) argument).greaterThan(zero()), one())
.when(((Field) argument).lessThan(zero()), one().neg())
.otherwise(zero());
default:
return function("sign", getDataType(), argument);
}
}
}