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    • com.metreeca.json.ShapeRedactor Maven / Gradle / Ivy

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    /*
 * Copyright © 2013-2022 Metreeca srl
 *
 * 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 com.metreeca.json;

import com.metreeca.json.shapes.*;

import java.util.Collection;
import java.util.HashSet;

import static com.metreeca.json.shapes.And.and;
import static com.metreeca.json.shapes.Field.field;
import static com.metreeca.json.shapes.Guard.Relate;
import static com.metreeca.json.shapes.Guard.Task;
import static com.metreeca.json.shapes.Link.link;
import static com.metreeca.json.shapes.Or.or;
import static com.metreeca.json.shapes.When.when;


final class ShapeRedactor extends Shape.Probe {

	private final String axis;
	private final Collection values; // null for wildcard


	ShapeRedactor(final String axis, final Collection values) {
		this.axis=axis;
		this.values=(values == null) ? null : new HashSet<>(values);
	}


	@Override public Shape probe(final Link link) {

		final boolean active=!axis.equals(Task) || values == null || values.contains(Relate);

		return active ? link(link.iri(), link.shape().map(this)) : and();
	}

	@Override public Shape probe(final Field field) {
		return field(field.label(), field.iri(), field.shape().map(this));
	}


	@Override public Shape probe(final Guard guard) {
		return axis.equals(guard.axis())
				? values == null || guard.values().stream().anyMatch(values::contains) ? and() : or()
				: guard;
	}

	@Override public Shape probe(final When when) {
		return when(when.test().map(this), when.pass().map(this), when.fail().map(this));
	}

	@Override public Shape probe(final And and) {
		return and(and.shapes().stream().map(this));
	}

	@Override public Shape probe(final Or or) {
		return or(or.shapes().stream().map(this));
	}


	@Override public Shape probe(final Shape shape) {
		return shape;
	}

}
    
    
    
    

    




    
    
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