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NestedPredicateFieldStepImpl.java
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NestedPredicateFieldStepImpl.java
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/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.engine.search.predicate.dsl.impl;
import java.lang.invoke.MethodHandles;
import java.util.function.Function;
import org.hibernate.search.engine.logging.impl.Log;
import org.hibernate.search.engine.search.predicate.SearchPredicate;
import org.hibernate.search.engine.search.predicate.dsl.NestedPredicateOptionsStep;
import org.hibernate.search.engine.search.predicate.dsl.PredicateFinalStep;
import org.hibernate.search.engine.search.predicate.dsl.SearchPredicateFactory;
import org.hibernate.search.engine.search.predicate.dsl.NestedPredicateFieldStep;
import org.hibernate.search.engine.search.predicate.dsl.NestedPredicateNestStep;
import org.hibernate.search.engine.search.predicate.dsl.spi.AbstractPredicateFinalStep;
import org.hibernate.search.engine.search.predicate.spi.NestedPredicateBuilder;
import org.hibernate.search.engine.search.predicate.spi.SearchPredicateBuilderFactory;
import org.hibernate.search.util.common.logging.impl.LoggerFactory;
class NestedPredicateFieldStepImpl<B>
extends AbstractPredicateFinalStep<B>
implements NestedPredicateFieldStep<NestedPredicateNestStep<?>>,
NestedPredicateNestStep<NestedPredicateOptionsStep<?>>,
NestedPredicateOptionsStep<NestedPredicateOptionsStep<?>> {
private static final Log log = LoggerFactory.make( Log.class, MethodHandles.lookup() );
private final SearchPredicateFactory factory;
private NestedPredicateBuilder<B> builder;
private B childPredicateBuilder;
NestedPredicateFieldStepImpl(SearchPredicateBuilderFactory<?, B> builderFactory, SearchPredicateFactory factory) {
super( builderFactory );
this.factory = factory;
}
@Override
public NestedPredicateNestStep<?> objectField(String absoluteFieldPath) {
this.builder = builderFactory.nested( absoluteFieldPath );
return this;
}
@Override
public NestedPredicateOptionsStep<?> nest(SearchPredicate searchPredicate) {
if ( this.childPredicateBuilder != null ) {
throw log.cannotAddMultiplePredicatesToNestedPredicate();
}
this.childPredicateBuilder = builderFactory.toImplementation( searchPredicate );
builder.nested( childPredicateBuilder );
return this;
}
@Override
public NestedPredicateOptionsStep<?> nest(
Function<? super SearchPredicateFactory, ? extends PredicateFinalStep> predicateContributor) {
return nest( predicateContributor.apply( factory ) );
}
@Override
protected B toImplementation() {
return builder.toImplementation();
}
}