/
OptionalObjectMatcher.java
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/
OptionalObjectMatcher.java
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/*
* Copyright 2019 Immutables Authors and Contributors
*
* 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.
*/
package org.immutables.criteria.matcher;
/**
* Matcher for optional (non-scalar) attributes
*/
public interface OptionalObjectMatcher<R, S> extends PresentAbsentMatcher<R>, Matcher {
/**
* Apply context-specific matcher if value is present
*/
default S value() {
// CriteriaContext.this.creator;
return Matchers.extract(this).<S>create();
}
/**
* Self-type for this matcher
*/
interface Self<S> extends Template<Self<S>, S, Void>, Disjunction<Self<S>> {}
interface Template<R, S, P> extends OptionalObjectMatcher<R, S>, Projection<P>, Aggregation.Count {}
@SuppressWarnings("unchecked")
static <R> CriteriaCreator<R> creator() {
class Local extends AbstractContextHolder implements Self {
private Local(CriteriaContext context) {
super(context);
}
}
return ctx -> (R) new Local(ctx);
}
}