org.zalando.github.spring.pagination.RelationsPredicate.java Source code

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Here is the source code for org.zalando.github.spring.pagination.RelationsPredicate.java

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/**
 * Copyright (C) 2015 Zalando SE (http://tech.zalando.com)
 *
 * 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.zalando.github.spring.pagination;

import org.springframework.util.Assert;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;

/**
 * Filter for {@link Iterables} of {@link LinkRelation}
 * 
 * @author jbellmann
 *
 */
class RelationsPredicate implements Predicate<LinkRelation> {

    private final String relation;

    public RelationsPredicate(String relation) {
        Assert.notNull(relation, "'relation' should never be null");
        Assert.hasText(relation, "'relation' should never be empty");
        this.relation = relation;
    }

    @Override
    public boolean apply(LinkRelation input) {
        return relation.equals(input.getRelation());
    }

}