org.jooq.impl.TrueCondition 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
*
* 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.Clause.CONDITION;
import static org.jooq.Clause.CONDITION_COMPARISON;
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import static org.jooq.SQLDialect.FIREBIRD;
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import static org.jooq.SQLDialect.SQLITE;
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import static org.jooq.impl.Keywords.K_TRUE;
import java.util.Set;
import org.jooq.Clause;
import org.jooq.Context;
import org.jooq.SQLDialect;
import org.jooq.True;
import org.jooq.impl.QOM.UEmpty;
/**
* @author Lukas Eder
*/
final class TrueCondition extends AbstractCondition implements True, UEmpty {
private static final Clause[] CLAUSES = { CONDITION, CONDITION_COMPARISON };
static final TrueCondition INSTANCE = new TrueCondition();
static final Set NO_SUPPORT_BOOLEAN = SQLDialect.supportedBy(FIREBIRD, SQLITE);
@Override
final boolean isNullable() {
return false;
}
@Override
final boolean parenthesised(Context ctx) {
return !NO_SUPPORT_BOOLEAN.contains(ctx.dialect());
}
@Override
public final void accept(Context ctx) {
if (NO_SUPPORT_BOOLEAN.contains(ctx.dialect()))
ctx.sql("1 = 1");
else
ctx.visit(K_TRUE);
}
@Override
public final Clause[] clauses(Context ctx) {
return CLAUSES;
}
private TrueCondition() {}
}