DruidPostgresqlSqlParserTest.java

package io.mycat.route;

import io.mycat.SimpleCachePool;
import io.mycat.cache.LayerCachePool;
import io.mycat.route.factory.RouteStrategyFactory;
import io.mycat.server.config.loader.ConfigInitializer;
import io.mycat.server.config.node.SchemaConfig;
import io.mycat.server.config.node.SystemConfig;

import java.sql.SQLNonTransientException;
import java.util.Map;

import junit.framework.Assert;

import org.junit.Test;

public class DruidPostgresqlSqlParserTest
{
	protected Map<String, SchemaConfig> schemaMap;
	protected LayerCachePool cachePool = new SimpleCachePool();
    protected RouteStrategy routeStrategy = RouteStrategyFactory.getRouteStrategy("druidparser");

	public DruidPostgresqlSqlParserTest() {
		ConfigInitializer confInit = new ConfigInitializer(true);
		schemaMap = confInit.getSchemas();
	}

	@Test
	public void testLimitToPgPage() throws SQLNonTransientException {
		String sql = "select * from offer order by id desc limit 5,10";
		SchemaConfig schema = schemaMap.get("pgdb");
        RouteResultset rrs = routeStrategy.route(new SystemConfig(), schema, -1, sql, null,
                null, cachePool);
        Assert.assertEquals(2, rrs.getNodes().length);
        Assert.assertEquals(5, rrs.getLimitStart());
        Assert.assertEquals(10, rrs.getLimitSize());
        Assert.assertEquals(0, rrs.getNodes()[0].getLimitStart());
        Assert.assertEquals(15, rrs.getNodes()[0].getLimitSize());

        sql= rrs.getNodes()[0].getStatement() ;
        rrs = routeStrategy.route(new SystemConfig(), schema, -1, sql, null,
                null, cachePool);
        Assert.assertEquals(0, rrs.getNodes()[0].getLimitStart());
        Assert.assertEquals(15, rrs.getNodes()[0].getLimitSize());
        Assert.assertEquals(0, rrs.getLimitStart());
        Assert.assertEquals(15, rrs.getLimitSize());

        sql="select * from offer1 order by id desc limit 5,10" ;
        rrs = routeStrategy.route(new SystemConfig(), schema, -1, sql, null,
                null, cachePool);
        Assert.assertEquals(1, rrs.getNodes().length);
        Assert.assertEquals(5, rrs.getLimitStart());
        Assert.assertEquals(10, rrs.getLimitSize());
        Assert.assertEquals(5, rrs.getNodes()[0].getLimitStart());
        Assert.assertEquals(10, rrs.getNodes()[0].getLimitSize());
	}



    @Test
    public void testPGPageSQL() throws SQLNonTransientException {
        String sql = "select sid from offer order by sid limit 10 offset 5";
        SchemaConfig schema = schemaMap.get("pgdb");
        RouteResultset rrs = routeStrategy.route(new SystemConfig(), schema, -1, sql, null,
                null, cachePool);
        Assert.assertEquals(2, rrs.getNodes().length);
        Assert.assertEquals(5, rrs.getLimitStart());
        Assert.assertEquals(10, rrs.getLimitSize());
        Assert.assertEquals(0, rrs.getNodes()[0].getLimitStart());
        Assert.assertEquals(15, rrs.getNodes()[0].getLimitSize());

        sql = "select sid from offer1 order by sid limit 10 offset 5";
        rrs = routeStrategy.route(new SystemConfig(), schema, -1, sql, null,
                null, cachePool);
        Assert.assertEquals(1, rrs.getNodes().length);
        Assert.assertEquals(5, rrs.getLimitStart());
        Assert.assertEquals(10, rrs.getLimitSize());
        Assert.assertEquals(5, rrs.getNodes()[0].getLimitStart());
        Assert.assertEquals(10, rrs.getNodes()[0].getLimitSize());
        Assert.assertEquals("SELECT sid\n" +
                "FROM offer1\n" +
                "ORDER BY sid\n" +
                "LIMIT 10 OFFSET 5",rrs.getNodes()[0].getStatement()) ;




    }
}