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package com.salesforce.phoenix.compile;
import static com.salesforce.phoenix.util.TestUtil.TEST_PROPERTIES;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Collections;
import java.util.List;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.junit.Test;
import com.salesforce.phoenix.expression.AndExpression;
import com.salesforce.phoenix.expression.ComparisonExpression;
import com.salesforce.phoenix.expression.Expression;
import com.salesforce.phoenix.expression.KeyValueColumnExpression;
import com.salesforce.phoenix.expression.LiteralExpression;
import com.salesforce.phoenix.jdbc.PhoenixConnection;
import com.salesforce.phoenix.jdbc.PhoenixStatement;
import com.salesforce.phoenix.parse.SQLParser;
import com.salesforce.phoenix.parse.SelectStatement;
import com.salesforce.phoenix.query.BaseConnectionlessQueryTest;
public class SelectStatementRewriterTest extends BaseConnectionlessQueryTest {
private static Expression compileStatement(String query) throws SQLException {
Scan scan = new Scan();
List<Object> binds = Collections.emptyList();
SQLParser parser = new SQLParser(query);
SelectStatement statement = parser.parseQuery();
PhoenixConnection pconn = DriverManager.getConnection(getUrl(), TEST_PROPERTIES).unwrap(PhoenixConnection.class);
ColumnResolver resolver = FromCompiler.getResolver(statement, pconn);
statement = StatementNormalizer.normalize(statement, resolver);
StatementContext context = new StatementContext(new PhoenixStatement(pconn), resolver, binds, scan);
Expression whereClause = WhereCompiler.compile(context, statement);
return WhereOptimizer.pushKeyExpressionsToScan(context, statement, whereClause);
}
@Test
public void testCollapseAnd() throws SQLException {
String tenantId = "000000000000001";
String query = "select * from atable where organization_id='" + tenantId + "' and a_integer=0";
Expression where = compileStatement(query);
assertTrue(where instanceof ComparisonExpression);
ComparisonExpression child = (ComparisonExpression)where;
assertEquals(CompareOp.EQUAL, child.getFilterOp());
assertTrue(child.getChildren().get(0) instanceof KeyValueColumnExpression);
assertTrue(child.getChildren().get(1) instanceof LiteralExpression);
}
@Test
public void testLHSLiteralCollapseAnd() throws SQLException {
String tenantId = "000000000000001";
String query = "select * from atable where '" + tenantId + "'=organization_id and 0=a_integer";
Expression where = compileStatement(query);
assertTrue(where instanceof ComparisonExpression);
ComparisonExpression child = (ComparisonExpression)where;
assertEquals(CompareOp.EQUAL, child.getFilterOp());
assertTrue(child.getChildren().get(0) instanceof KeyValueColumnExpression);
assertTrue(child.getChildren().get(1) instanceof LiteralExpression);
}
@Test
public void testRewriteAnd() throws SQLException {
String tenantId = "000000000000001";
String query = "select * from atable where organization_id='" + tenantId + "' and a_integer=0 and a_string='foo'";
Expression where = compileStatement(query);
assertTrue(where instanceof AndExpression);
assertTrue(where.getChildren().size() == 2);
assertTrue(where.getChildren().get(0) instanceof ComparisonExpression);
assertEquals(CompareOp.EQUAL, ((ComparisonExpression)where.getChildren().get(0)).getFilterOp());
assertTrue(where.getChildren().get(1) instanceof ComparisonExpression);
assertEquals(CompareOp.EQUAL, ((ComparisonExpression)where.getChildren().get(1)).getFilterOp());
}
@Test
public void testCollapseWhere() throws SQLException {
String tenantId = "000000000000001";
String query = "select * from atable where organization_id='" + tenantId + "' and substr(organization_id,1,3)='foo' LIMIT 2";
Expression where = compileStatement(query);
assertNull(where);
}
@Test
public void testNoCollapse() throws SQLException {
String query = "select * from atable where a_integer=0 and a_string='foo'";
Expression where = compileStatement(query);
assertEquals(2, where.getChildren().size());
assertTrue(where.getChildren().get(0) instanceof ComparisonExpression);
assertEquals(CompareOp.EQUAL, ((ComparisonExpression)where.getChildren().get(0)).getFilterOp());
assertTrue(where.getChildren().get(1) instanceof ComparisonExpression);
assertEquals(CompareOp.EQUAL, ((ComparisonExpression)where.getChildren().get(1)).getFilterOp());
}
}