RiakHandleResolver.java

/*
 * 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.basho.riak.presto;

import com.basho.riak.presto.models.CoverageSplit;
import com.basho.riak.presto.models.RiakColumnHandle;
import com.basho.riak.presto.models.RiakTableHandle;
import com.facebook.presto.spi.*;
import io.airlift.log.Logger;

import javax.inject.Inject;

import static com.google.common.base.Preconditions.checkNotNull;

public class RiakHandleResolver implements ConnectorHandleResolver {
    private static final Logger log = Logger.get(RiakHandleResolver.class);


    private final String connectorId;

    @Inject
    public RiakHandleResolver(RiakConnectorId clientId) {
        this.connectorId = checkNotNull(clientId, "clientId is null").toString();
    }

    @Override
    public boolean canHandle(ConnectorIndexHandle connectorIndexHandle) {
        return false;
    }

    @Override
    public boolean canHandle(ConnectorOutputTableHandle connectorOutputTableHandle) {
        return false;
    }

    @Override
    public boolean canHandle(ConnectorInsertTableHandle connectorInsertTableHandle) {
        return false;
    }

    @Override
    public Class<? extends ConnectorIndexHandle> getIndexHandleClass() {
        return null;
    }

    @Override
    public boolean canHandle(ConnectorTableHandle tableHandle) {
        return tableHandle instanceof RiakTableHandle && ((RiakTableHandle) tableHandle).getConnectorId().equals(connectorId);
    }

    @Override
    public boolean canHandle(ColumnHandle columnHandle) {
        return columnHandle instanceof RiakColumnHandle && ((RiakColumnHandle) columnHandle).getConnectorId().equals(connectorId);
    }

    @Override
    public boolean canHandle(ConnectorSplit split) {
        if (split instanceof CoverageSplit) {
            CoverageSplit coverageSplit = (CoverageSplit) split;
            return coverageSplit.getTableHandle().getConnectorId().equals(connectorId);
        }
        return false;
    }

    @Override
    public Class<? extends ConnectorTableHandle> getTableHandleClass() {
        return RiakTableHandle.class;
    }

    @Override
    public Class<? extends ColumnHandle> getColumnHandleClass() {
        return RiakColumnHandle.class;
    }

    @Override
    public Class<? extends ConnectorSplit> getSplitClass() {
        return CoverageSplit.class;
    }

    @Override
    public Class<? extends ConnectorOutputTableHandle> getOutputTableHandleClass() {
        return null;
    }

    @Override
    public Class<? extends ConnectorInsertTableHandle> getInsertTableHandleClass() {
        return null;
    }
}