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/*
 * Copyright (c) 2008-2024, Hazelcast, Inc. All Rights Reserved.
 *
 * 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.hazelcast.map.impl.iterator;

import com.hazelcast.map.impl.proxy.MapProxyImpl;
import com.hazelcast.projection.Projection;
import com.hazelcast.query.Predicate;

import javax.annotation.Nonnull;
import java.util.Iterator;
import java.util.Map;

/**
 * Iterable that provides an iterator for iterating the result of the
 * projection on map entries in the whole cluster which satisfies the
 * predicate. It returns {@link MapQueryIterator}.
 *
 * @see MapQueryIterator
 */
public class MapQueryIterable implements Iterable {
    private final MapProxyImpl mapProxy;
    private final int fetchSize;
    private final Projection, R> projection;
    private final Predicate predicate;
    private final int partitionCount;

    public MapQueryIterable(MapProxyImpl mapProxy,
                            int fetchSize, int partitionCount,
                            Projection, R> projection, Predicate predicate) {
        this.mapProxy = mapProxy;
        this.partitionCount = partitionCount;
        this.fetchSize = fetchSize;
        this.predicate = predicate;
        this.projection = projection;
    }

    @Nonnull
    @Override
    public Iterator iterator() {
        return new MapQueryIterator<>(mapProxy, fetchSize, partitionCount, projection, predicate);
    }
}