/*
* 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.Clause.CONDITION;
import static org.jooq.Clause.CONDITION_COMPARISON;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.val;
import org.jooq.Clause;
import org.jooq.Condition;
import org.jooq.Configuration;
import org.jooq.Context;
import org.jooq.Field;
/**
* Abstraction for various "contains" operations
*
* @author Lukas Eder
*/
final class Contains<T> extends AbstractCondition {
/**
* Generated UID
*/
private static final long serialVersionUID = 6146303086487338550L;
private static final Clause[] CLAUSES = { CONDITION, CONDITION_COMPARISON };
private final Field<T> lhs;
private final Field<T> rhs;
private final T value;
Contains(Field<T> field, T value) {
this.lhs = field;
this.rhs = null;
this.value = value;
}
Contains(Field<T> field, Field<T> rhs) {
this.lhs = field;
this.rhs = rhs;
this.value = null;
}
@Override
public final void accept(Context<?> ctx) {
ctx.visit(condition(ctx.configuration()));
}
@Override
public final Clause[] clauses(Context<?> ctx) {
return CLAUSES;
}
private final Condition condition(Configuration configuration) {
// [#1107] Some dialects support "contains" operations for ARRAYs
// [#5929] Check both sides of the operation for array types
if (lhs.getDataType().isArray()
|| (rhs != null && rhs.getDataType().isArray())
|| (rhs == null && value != null && value.getClass().isArray()))
return new PostgresArrayContains();
// "contains" operations on Strings
else
return lhs.like((rhs == null)
? DSL.concat(inline("%"), Tools.escapeForLike(value, configuration), inline("%"))
: DSL.concat(inline("%"), Tools.escapeForLike(rhs, configuration), inline("%")), Tools.ESCAPE);
}
/**
* The Postgres array contains operator
*/
private class PostgresArrayContains extends AbstractCondition {
/**
* Generated UID
*/
private static final long serialVersionUID = 8083622843635168388L;
@Override
public final void accept(Context<?> ctx) {
ctx.visit(lhs).sql(" @> ").visit(rhs());
}
@Override
public final Clause[] clauses(Context<?> ctx) {
return CLAUSES;
}
private final Field<T> rhs() {
return (rhs == null) ? val(value, lhs) : rhs;
}
}
}