org.jooq.impl.ConditionAsField 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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package org.jooq.impl;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.not;
import org.jooq.Condition;
import org.jooq.Configuration;
import org.jooq.QueryPart;
/**
* @author Lukas Eder
*/
final class ConditionAsField extends AbstractFunction {
/**
* Generated UID
*/
private static final long serialVersionUID = -5921673852489483721L;
private final Condition condition;
ConditionAsField(Condition condition) {
super(condition.toString(), SQLDataType.BOOLEAN);
this.condition = condition;
}
@Override
final QueryPart getFunction0(Configuration configuration) {
switch (configuration.family()) {
// Some databases don't accept predicates where column expressions
// are expected.
case CUBRID:
case FIREBIRD:
// [#3206] Correct implementation of three-valued logic is important here
return DSL.when(condition, inline(true))
.when(not(condition), inline(false))
.otherwise(inline((Boolean) null));
// These databases can inline predicates in column expression contexts
case DERBY:
case H2:
case HSQLDB:
case MARIADB:
case MYSQL:
case POSTGRES:
case SQLITE:
// The default, for new dialects
default:
return DSL.sql("({0})", condition);
}
}
}