hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/dataflow/TreeIndexStatsOperatorDescriptor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.hyracks.storage.am.common.dataflow;

import org.apache.hyracks.api.context.IHyracksTaskContext;
import org.apache.hyracks.api.dataflow.IOperatorNodePushable;
import org.apache.hyracks.api.dataflow.value.IRecordDescriptorProvider;
import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
import org.apache.hyracks.api.dataflow.value.RecordDescriptor;
import org.apache.hyracks.api.exceptions.HyracksDataException;
import org.apache.hyracks.api.job.IOperatorDescriptorRegistry;
import org.apache.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
import org.apache.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor;
import org.apache.hyracks.storage.common.IStorageManager;

public class TreeIndexStatsOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor {

    private static final long serialVersionUID = 1L;
    private static final RecordDescriptor recDesc =
            new RecordDescriptor(new ISerializerDeserializer[] { new UTF8StringSerializerDeserializer() });
    private final IIndexDataflowHelperFactory indexHelperFactory;
    private final IStorageManager storageManager;

    public TreeIndexStatsOperatorDescriptor(IOperatorDescriptorRegistry spec, IStorageManager storageManager,
            IIndexDataflowHelperFactory indexHelperFactory) {
        super(spec, 0, 1);
        this.indexHelperFactory = indexHelperFactory;
        this.storageManager = storageManager;
        this.outRecDescs[0] = recDesc;
    }

    @Override
    public IOperatorNodePushable createPushRuntime(IHyracksTaskContext ctx,
            IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) throws HyracksDataException {
        return new TreeIndexStatsOperatorNodePushable(ctx, partition, indexHelperFactory, storageManager);
    }
}