| /* |
| // Licensed to Julian Hyde under one or more contributor license |
| // agreements. See the NOTICE file distributed with this work for |
| // additional information regarding copyright ownership. |
| // |
| // Julian Hyde licenses this file to you 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 net.hydromatic.optiq.test; |
| |
| import net.hydromatic.linq4j.*; |
| |
| import net.hydromatic.optiq.*; |
| import net.hydromatic.optiq.impl.AbstractTableQueryable; |
| import net.hydromatic.optiq.impl.java.AbstractQueryableTable; |
| import net.hydromatic.optiq.jdbc.OptiqConnection; |
| import net.hydromatic.optiq.rules.java.EnumerableConvention; |
| import net.hydromatic.optiq.rules.java.JavaRules; |
| |
| import org.eigenbase.rel.RelNode; |
| import org.eigenbase.relopt.RelOptTable; |
| import org.eigenbase.reltype.RelDataType; |
| import org.eigenbase.reltype.RelDataTypeFactory; |
| import org.eigenbase.util.Pair; |
| |
| import com.google.common.collect.ImmutableMultiset; |
| |
| import org.junit.Test; |
| |
| import java.sql.*; |
| import java.util.*; |
| |
| import static org.hamcrest.CoreMatchers.*; |
| import static org.junit.Assert.*; |
| |
| public class TableInRootSchemaTest { |
| /** Test case for issue 85, "Adding a table to the root schema causes breakage |
| * in OptiqPrepareImpl". */ |
| @Test public void testAddingTableInRootSchema() throws Exception { |
| Class.forName("net.hydromatic.optiq.jdbc.Driver"); |
| Connection connection = DriverManager.getConnection("jdbc:optiq:"); |
| OptiqConnection optiqConnection = connection.unwrap(OptiqConnection.class); |
| |
| optiqConnection.getRootSchema().add("SAMPLE", new SimpleTable()); |
| Statement statement = optiqConnection.createStatement(); |
| ResultSet resultSet = |
| statement.executeQuery("select A, SUM(B) from SAMPLE group by A"); |
| |
| assertThat( |
| ImmutableMultiset.of( |
| "A=foo; EXPR$1=8", |
| "A=bar; EXPR$1=4"), |
| equalTo(OptiqAssert.toSet(resultSet))); |
| |
| final ResultSetMetaData resultSetMetaData = resultSet.getMetaData(); |
| assertThat(resultSetMetaData.getColumnName(1), equalTo("A")); |
| assertThat(resultSetMetaData.getTableName(1), equalTo("SAMPLE")); |
| assertThat(resultSetMetaData.getSchemaName(1), nullValue()); |
| // Per JDBC, column name should be null. But DBUnit requires every column |
| // to have a name, so the driver uses the label. |
| assertThat(resultSetMetaData.getColumnName(2), equalTo("EXPR$1")); |
| assertThat(resultSetMetaData.getTableName(2), nullValue()); |
| assertThat(resultSetMetaData.getSchemaName(2), nullValue()); |
| resultSet.close(); |
| statement.close(); |
| connection.close(); |
| } |
| |
| public static class SimpleTable extends AbstractQueryableTable |
| implements TranslatableTable { |
| private String[] columnNames = { "A", "B" }; |
| private Class[] columnTypes = { String.class, Integer.class }; |
| private Object[][] rows = new Object[3][]; |
| |
| SimpleTable() { |
| super(Object[].class); |
| |
| rows[0] = new Object[] { "foo", 5 }; |
| rows[1] = new Object[] { "bar", 4 }; |
| rows[2] = new Object[] { "foo", 3 }; |
| } |
| |
| public RelDataType getRowType(RelDataTypeFactory typeFactory) { |
| int columnCount = columnNames.length; |
| final List<Pair<String, RelDataType>> columnDesc = |
| new ArrayList<Pair<String, RelDataType>>(columnCount); |
| for (int i = 0; i < columnCount; i++) { |
| final RelDataType colType = typeFactory |
| .createJavaType(columnTypes[i]); |
| columnDesc.add(Pair.of(columnNames[i], colType)); |
| } |
| return typeFactory.createStructType(columnDesc); |
| } |
| |
| public Iterator<Object[]> iterator() { |
| return Linq4j.enumeratorIterator(enumerator()); |
| } |
| |
| public Enumerator<Object[]> enumerator() { |
| return enumeratorImpl(null); |
| } |
| |
| public <T> Queryable<T> asQueryable(QueryProvider queryProvider, |
| SchemaPlus schema, String tableName) { |
| return new AbstractTableQueryable<T>(queryProvider, schema, this, |
| tableName) { |
| public Enumerator<T> enumerator() { |
| //noinspection unchecked |
| return (Enumerator<T>) enumeratorImpl(null); |
| } |
| }; |
| } |
| |
| private Enumerator<Object[]> enumeratorImpl(final int[] fields) { |
| return new Enumerator<Object[]>() { |
| private Object[] current; |
| private Iterator<Object[]> iterator = Arrays.asList(rows) |
| .iterator(); |
| |
| public Object[] current() { |
| return current; |
| } |
| |
| public boolean moveNext() { |
| if (iterator.hasNext()) { |
| Object[] full = iterator.next(); |
| current = fields != null ? convertRow(full) : full; |
| return true; |
| } else { |
| current = null; |
| return false; |
| } |
| } |
| |
| public void reset() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void close() { |
| // noop |
| } |
| |
| private Object[] convertRow(Object[] full) { |
| final Object[] objects = new Object[fields.length]; |
| for (int i = 0; i < fields.length; i++) { |
| objects[i] = full[fields[i]]; |
| } |
| return objects; |
| } |
| }; |
| } |
| |
| // keep |
| public RelNode toRel(RelOptTable.ToRelContext context, |
| RelOptTable relOptTable) { |
| return new JavaRules.EnumerableTableAccessRel(context.getCluster(), |
| context.getCluster().traitSetOf(EnumerableConvention.INSTANCE), |
| relOptTable, (Class) getElementType()); |
| } |
| } |
| } |
| |
| // End TableInRootSchemaTest.java |