org.jooq.impl.Concat 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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* distributed under the License is distributed on an "AS IS" BASIS,
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* 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.
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* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq.impl;
import static org.jooq.impl.DSL.castAll;
import static org.jooq.impl.DSL.function;
import static org.jooq.impl.ExpressionOperator.ADD;
import static org.jooq.impl.ExpressionOperator.BIT_AND;
import static org.jooq.impl.ExpressionOperator.CONCAT;
import org.jooq.Configuration;
import org.jooq.Field;
/**
* @author Lukas Eder
*/
final class Concat extends AbstractFunction {
/**
* Generated UID
*/
private static final long serialVersionUID = -7273879239726265322L;
Concat(Field... arguments) {
super("concat", SQLDataType.VARCHAR, arguments);
}
@SuppressWarnings("unchecked")
@Override
final Field getFunction0(Configuration configuration) {
// [#461] Type cast the concat expression, if this isn't a VARCHAR field
Field[] cast = castAll(String.class, getArguments());
// If there is only one argument, return it immediately
if (cast.length == 1) {
return cast[0];
}
Field first = cast[0];
Field[] others = new Field[cast.length - 1];
System.arraycopy(cast, 1, others, 0, others.length);
switch (configuration.family()) {
case MARIADB:
case MYSQL:
return function("concat", SQLDataType.VARCHAR, cast);
default:
return new Expression(CONCAT, first, others);
}
}
}