| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF 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 org.apache.jackrabbit.oak.plugins.index; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.fail; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| import org.apache.jackrabbit.oak.api.PropertyValue; |
| import org.apache.jackrabbit.oak.api.Result.SizePrecision; |
| import org.apache.jackrabbit.oak.query.QueryEngineSettings; |
| import org.apache.jackrabbit.oak.spi.query.Cursor; |
| import org.apache.jackrabbit.oak.spi.query.IndexRow; |
| import org.junit.Test; |
| |
| /** |
| * Tests the cursors implementations. |
| */ |
| public class CursorsTest { |
| |
| @Test |
| public void intersectionCursor() { |
| QueryEngineSettings s = new QueryEngineSettings(); |
| Cursor a = new SimpleCursor("1:", "/b", "/c", "/e", "/e", "/c"); |
| Cursor b = new SimpleCursor("2:", "/a", "/c", "/d", "/b", "/c"); |
| Cursor c = Cursors.newIntersectionCursor(a, b, s); |
| assertEquals("1:/b, 1:/c", list(c)); |
| assertFalse(c.hasNext()); |
| } |
| |
| @Test |
| public void intersectionCursorExceptions() { |
| QueryEngineSettings s = new QueryEngineSettings(); |
| Cursor a = new SimpleCursor("1:", "/x", "/b", "/c", "/e", "/e", "/c"); |
| Cursor b = new SimpleCursor("2:", "/a", "/c", "/d", "/b", "/c"); |
| Cursor c = Cursors.newIntersectionCursor(a, b, s); |
| c.next(); |
| c.next(); |
| try { |
| c.remove(); |
| fail(); |
| } catch (UnsupportedOperationException e) { |
| // expected |
| } |
| try { |
| c.next(); |
| fail(); |
| } catch (IllegalStateException e) { |
| // expected |
| } |
| } |
| |
| static String list(Cursor c) { |
| StringBuilder buff = new StringBuilder(); |
| while (c.hasNext()) { |
| buff.append(buff.length() == 0 ? "" : ", "); |
| buff.append(c.next()); |
| } |
| return buff.toString(); |
| } |
| |
| static class SimpleCursor implements Cursor { |
| |
| final Iterator<IndexRow> rows; |
| |
| SimpleCursor(String idPrefix, String... paths) { |
| ArrayList<IndexRow> list = new ArrayList<IndexRow>(); |
| for (String p : paths) { |
| list.add(new SimpleIndexRow(p, idPrefix + p)); |
| } |
| rows = list.iterator(); |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return rows.hasNext(); |
| } |
| |
| @Override |
| public void remove() { |
| rows.remove(); |
| } |
| |
| @Override |
| public IndexRow next() { |
| return rows.next(); |
| } |
| |
| @Override |
| public long getSize(SizePrecision precision, long max) { |
| return -1; |
| } |
| |
| } |
| |
| static class SimpleIndexRow implements IndexRow { |
| |
| final String path; |
| final String id; |
| |
| SimpleIndexRow(String path, String id) { |
| this.path = path; |
| this.id = id; |
| } |
| |
| @Override |
| public boolean isVirtualRow() { |
| return false; |
| } |
| |
| @Override |
| public String getPath() { |
| return path; |
| } |
| |
| @Override |
| public PropertyValue getValue(String columnName) { |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return id; |
| } |
| |
| } |
| } |