com.facebook.presto.connector.system.SystemConnector.java Source code

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Here is the source code for com.facebook.presto.connector.system.SystemConnector.java

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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.connector.system;

import com.facebook.presto.spi.Connector;
import com.facebook.presto.spi.ConnectorHandleResolver;
import com.facebook.presto.spi.ConnectorMetadata;
import com.facebook.presto.spi.ConnectorSplitManager;
import com.facebook.presto.split.ConnectorDataStreamProvider;
import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.ImmutableClassToInstanceMap;

import javax.inject.Inject;

public class SystemConnector implements Connector {
    private final ClassToInstanceMap<Object> services;

    @Inject
    public SystemConnector(SystemTablesMetadata value, SystemSplitManager systemSplitManager,
            SystemDataStreamProvider systemDataStreamProvider) {
        ImmutableClassToInstanceMap.Builder<Object> services = ImmutableClassToInstanceMap.builder();
        services.put(ConnectorMetadata.class, value);
        services.put(ConnectorSplitManager.class, systemSplitManager);
        services.put(ConnectorDataStreamProvider.class, systemDataStreamProvider);
        services.put(ConnectorHandleResolver.class, new SystemHandleResolver());

        this.services = services.build();
    }

    @Override
    public <T> T getService(Class<T> type) {
        return services.getInstance(type);
    }
}