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Presto - mongodb Connector
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/*
 * 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.facebook.presto.mongodb;

import com.facebook.presto.spi.ColumnHandle;
import com.facebook.presto.spi.ConnectorSplit;
import com.facebook.presto.spi.HostAddress;
import com.facebook.presto.spi.SchemaTableName;
import com.facebook.presto.spi.predicate.TupleDomain;
import com.facebook.presto.spi.schedule.NodeSelectionStrategy;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ImmutableList;

import java.util.List;

import static com.facebook.presto.spi.schedule.NodeSelectionStrategy.NO_PREFERENCE;
import static java.util.Objects.requireNonNull;

public class MongoSplit
        implements ConnectorSplit
{
    private final SchemaTableName schemaTableName;
    private final TupleDomain tupleDomain;
    private final List addresses;

    @JsonCreator
    public MongoSplit(
            @JsonProperty("schemaTableName") SchemaTableName schemaTableName,
            @JsonProperty("tupleDomain") TupleDomain tupleDomain,
            @JsonProperty("addresses") List addresses)
    {
        this.schemaTableName = requireNonNull(schemaTableName, "schemaTableName is null");
        this.tupleDomain = requireNonNull(tupleDomain, "tupleDomain is null");
        this.addresses = ImmutableList.copyOf(requireNonNull(addresses, "addresses is null"));
    }

    @JsonProperty
    public SchemaTableName getSchemaTableName()
    {
        return schemaTableName;
    }

    @JsonProperty
    public TupleDomain getTupleDomain()
    {
        return tupleDomain;
    }

    @Override
    public NodeSelectionStrategy getNodeSelectionStrategy()
    {
        return NO_PREFERENCE;
    }

    @JsonProperty
    public List getAddresses()
    {
        return addresses;
    }

    @Override
    public List getPreferredNodes(List sortedCandidates)
    {
        return addresses;
    }

    @Override
    public Object getInfo()
    {
        return this;
    }
}