JdbcPlugin.java

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package org.apache.doris.jdbc;

import org.apache.doris.jni.spi.DorisPlugin;
import org.apache.doris.jni.spi.JniScannerFactory;
import org.apache.doris.jni.spi.JniWriterFactory;

import java.util.Arrays;
import java.util.Collections;

/**
 * Entry point of the {@code jdbc} plugin, found through
 * {@code META-INF/services/org.apache.doris.jni.spi.DorisPlugin}.
 *
 * <p>Everything a JDBC catalog needs of BE lives here, which is why the plugin owns three
 * factories rather than one: reading a table, writing to one, and testing a connection are
 * separate entry points that BE calls at unrelated times. Testing a connection is a scan of zero
 * rows, so it is a scanner factory under a name of its own rather than a fourth kind of thing.
 */
public class JdbcPlugin implements DorisPlugin {

    @Override
    public Iterable<JniScannerFactory> getScannerFactories() {
        return Arrays.asList(new JdbcScannerFactory(), new JdbcConnectionTesterFactory());
    }

    @Override
    public Iterable<JniWriterFactory> getWriterFactories() {
        return Collections.singletonList(new JdbcWriterFactory());
    }
}