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/*
 * Copyright 2012-2020 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.data.gemfire.repository.query;

import java.util.Iterator;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.springframework.data.domain.Sort;
import org.springframework.data.gemfire.mapping.GemfirePersistentEntity;
import org.springframework.data.repository.query.parser.AbstractQueryCreator;
import org.springframework.data.repository.query.parser.Part;
import org.springframework.data.repository.query.parser.PartTree;

/**
 * {@link AbstractQueryCreator} to create {@link QueryString} instances.
 *
 * @author Oliver Gierke
 * @author John Blum
 * @see org.springframework.data.gemfire.repository.query.QueryBuilder
 * @see org.springframework.data.repository.query.parser.AbstractQueryCreator
 * @see org.springframework.data.repository.query.parser.Part
 * @see org.springframework.data.repository.query.parser.PartTree
 */
class GemfireQueryCreator extends AbstractQueryCreator {

	private static final Logger logger = LoggerFactory.getLogger(GemfireQueryCreator.class);

	private Iterator indexes;

	private final QueryBuilder queryBuilder;

	/**
	 * Creates a new {@link GemfireQueryCreator} using the given {@link PartTree} and domain class.
	 *
	 * @param tree must not be {@literal null}.
	 * @param entity must not be {@literal null}.
	 */
	public GemfireQueryCreator(PartTree tree, GemfirePersistentEntity entity) {

		super(tree);

		this.queryBuilder = new QueryBuilder(entity, tree);
		this.indexes = new IndexProvider();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.repository.query.parser.AbstractQueryCreator#createQuery(org.springframework.data.domain.Sort)
	 */
	@Override
	public QueryString createQuery(Sort dynamicSort) {

		this.indexes = new IndexProvider();

		return super.createQuery(dynamicSort);
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.repository.query.parser.AbstractQueryCreator#create(org.springframework.data.repository.query.parser.Part, java.util.Iterator)
	 */
	@Override
	protected Predicates create(Part part, Iterator