/*
* 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.plugin.jdbc;
import com.facebook.presto.spi.ColumnMetadata;
import com.facebook.presto.spi.ConnectorTableMetadata;
import com.facebook.presto.spi.PrestoException;
import com.facebook.presto.spi.SchemaTableName;
import com.facebook.presto.spi.TableNotFoundException;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import static com.facebook.presto.plugin.jdbc.TestingDatabase.CONNECTOR_ID;
import static com.facebook.presto.spi.StandardErrorCode.NOT_FOUND;
import static com.facebook.presto.spi.StandardErrorCode.PERMISSION_DENIED;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static com.facebook.presto.spi.type.VarcharType.createVarcharType;
import static com.facebook.presto.testing.TestingConnectorSession.SESSION;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNull;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
@Test(singleThreaded = true)
public class TestJdbcMetadata
{
private TestingDatabase database;
private JdbcMetadata metadata;
private JdbcTableHandle tableHandle;
@BeforeMethod
public void setUp()
throws Exception
{
database = new TestingDatabase();
metadata = new JdbcMetadata(database.getJdbcClient(), false);
tableHandle = metadata.getTableHandle(SESSION, new SchemaTableName("example", "numbers"));
}
@AfterMethod(alwaysRun = true)
public void tearDown()
throws Exception
{
database.close();
}
@Test
public void testListSchemaNames()
{
assertTrue(metadata.listSchemaNames(SESSION).containsAll(ImmutableSet.of("example", "tpch")));
}
@Test
public void testGetTableHandle()
{
JdbcTableHandle tableHandle = metadata.getTableHandle(SESSION, new SchemaTableName("example", "numbers"));
assertEquals(metadata.getTableHandle(SESSION, new SchemaTableName("example", "numbers")), tableHandle);
assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("example", "unknown")));
assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("unknown", "numbers")));
assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("unknown", "unknown")));
}
@Test
public void testGetColumnHandles()
{
// known table
assertEquals(metadata.getColumnHandles(SESSION, tableHandle), ImmutableMap.of(
"text", new JdbcColumnHandle(CONNECTOR_ID, "TEXT", VARCHAR),
"text_short", new JdbcColumnHandle(CONNECTOR_ID, "TEXT_SHORT", createVarcharType(32)),
"value", new JdbcColumnHandle(CONNECTOR_ID, "VALUE", BIGINT)));
// unknown table
unknownTableColumnHandle(new JdbcTableHandle(CONNECTOR_ID, new SchemaTableName("unknown", "unknown"), "unknown", "unknown", "unknown"));
unknownTableColumnHandle(new JdbcTableHandle(CONNECTOR_ID, new SchemaTableName("example", "numbers"), null, "example", "unknown"));
}
private void unknownTableColumnHandle(JdbcTableHandle tableHandle)
{
try {
metadata.getColumnHandles(SESSION, tableHandle);
fail("Expected getColumnHandle of unknown table to throw a TableNotFoundException");
}
catch (TableNotFoundException ignored) {
}
}
@Test
public void getTableMetadata()
{
// known table
ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(SESSION, tableHandle);
assertEquals(tableMetadata.getTable(), new SchemaTableName("example", "numbers"));
assertEquals(tableMetadata.getColumns(), ImmutableList.of(
new ColumnMetadata("text", VARCHAR),
new ColumnMetadata("text_short", createVarcharType(32)),
new ColumnMetadata("value", BIGINT)));
// escaping name patterns
JdbcTableHandle specialTableHandle = metadata.getTableHandle(SESSION, new SchemaTableName("exa_ple", "num_ers"));
ConnectorTableMetadata specialTableMetadata = metadata.getTableMetadata(SESSION, specialTableHandle);
assertEquals(specialTableMetadata.getTable(), new SchemaTableName("exa_ple", "num_ers"));
assertEquals(specialTableMetadata.getColumns(), ImmutableList.of(
new ColumnMetadata("te_t", VARCHAR),
new ColumnMetadata("va%ue", BIGINT)));
// unknown tables should produce null
unknownTableMetadata(new JdbcTableHandle(CONNECTOR_ID, new SchemaTableName("u", "numbers"), null, "unknown", "unknown"));
unknownTableMetadata(new JdbcTableHandle(CONNECTOR_ID, new SchemaTableName("example", "numbers"), null, "example", "unknown"));
unknownTableMetadata(new JdbcTableHandle(CONNECTOR_ID, new SchemaTableName("example", "numbers"), null, "unknown", "numbers"));
}
private void unknownTableMetadata(JdbcTableHandle tableHandle)
{
try {
metadata.getTableMetadata(SESSION, tableHandle);
fail("Expected getTableMetadata of unknown table to throw a TableNotFoundException");
}
catch (TableNotFoundException ignored) {
}
}
@Test
public void testListTables()
{
// all schemas
assertEquals(ImmutableSet.copyOf(metadata.listTables(SESSION, null)), ImmutableSet.of(
new SchemaTableName("example", "numbers"),
new SchemaTableName("example", "view_source"),
new SchemaTableName("example", "view"),
new SchemaTableName("tpch", "orders"),
new SchemaTableName("tpch", "lineitem"),
new SchemaTableName("exa_ple", "table_with_float_col"),
new SchemaTableName("exa_ple", "num_ers")));
// specific schema
assertEquals(ImmutableSet.copyOf(metadata.listTables(SESSION, "example")), ImmutableSet.of(
new SchemaTableName("example", "numbers"),
new SchemaTableName("example", "view_source"),
new SchemaTableName("example", "view")));
assertEquals(ImmutableSet.copyOf(metadata.listTables(SESSION, "tpch")), ImmutableSet.of(
new SchemaTableName("tpch", "orders"),
new SchemaTableName("tpch", "lineitem")));
assertEquals(ImmutableSet.copyOf(metadata.listTables(SESSION, "exa_ple")), ImmutableSet.of(
new SchemaTableName("exa_ple", "num_ers"),
new SchemaTableName("exa_ple", "table_with_float_col")));
// unknown schema
assertEquals(ImmutableSet.copyOf(metadata.listTables(SESSION, "unknown")), ImmutableSet.of());
}
@Test
public void getColumnMetadata()
{
assertEquals(
metadata.getColumnMetadata(SESSION, tableHandle, new JdbcColumnHandle(CONNECTOR_ID, "text", VARCHAR)),
new ColumnMetadata("text", VARCHAR));
}
@Test(expectedExceptions = PrestoException.class)
public void testCreateTable()
{
metadata.createTable(SESSION, new ConnectorTableMetadata(
new SchemaTableName("example", "foo"),
ImmutableList.of(new ColumnMetadata("text", VARCHAR))));
}
@Test
public void testDropTableTable()
{
try {
metadata.dropTable(SESSION, tableHandle);
fail("expected exception");
}
catch (PrestoException e) {
assertEquals(e.getErrorCode(), PERMISSION_DENIED.toErrorCode());
}
metadata = new JdbcMetadata(database.getJdbcClient(), true);
metadata.dropTable(SESSION, tableHandle);
try {
metadata.getTableMetadata(SESSION, tableHandle);
fail("expected exception");
}
catch (PrestoException e) {
assertEquals(e.getErrorCode(), NOT_FOUND.toErrorCode());
}
}
}