| /* |
| * 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.cassandra.cql3; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| import org.junit.Test; |
| |
| import junit.framework.Assert; |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.db.marshal.BytesType; |
| import org.apache.cassandra.db.marshal.UTF8Type; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| public class ColumnIdentifierTest |
| { |
| |
| @Test |
| public void testComparisonMethod() |
| { |
| ThreadLocalRandom random = ThreadLocalRandom.current(); |
| byte[] commonBytes = new byte[10]; |
| byte[] aBytes = new byte[16]; |
| byte[] bBytes = new byte[16]; |
| for (int i = 0 ; i < 100000 ; i++) |
| { |
| int commonLength = random.nextInt(0, 10); |
| random.nextBytes(commonBytes); |
| random.nextBytes(aBytes); |
| random.nextBytes(bBytes); |
| System.arraycopy(commonBytes, 0, aBytes, 0, commonLength); |
| System.arraycopy(commonBytes, 0, bBytes, 0, commonLength); |
| int aLength = random.nextInt(commonLength, 16); |
| int bLength = random.nextInt(commonLength, 16); |
| ColumnIdentifier a = new ColumnIdentifier(ByteBuffer.wrap(aBytes, 0, aLength), BytesType.instance); |
| ColumnIdentifier b = new ColumnIdentifier(ByteBuffer.wrap(bBytes, 0, bLength), BytesType.instance); |
| Assert.assertEquals("" + i, compareResult(a.compareTo(b)), compareResult(ByteBufferUtil.compareUnsigned(a.bytes, b.bytes))); |
| } |
| } |
| |
| private static int compareResult(int v) |
| { |
| return v < 0 ? -1 : v > 0 ? 1 : 0; |
| } |
| |
| @Test |
| public void testInternedCache() |
| { |
| AbstractType<?> utf8Type = UTF8Type.instance; |
| AbstractType<?> bytesType = BytesType.instance; |
| |
| byte[] bytes = new byte [] { 0x63, (byte) 0x32 }; |
| String text = "c2"; // the UTF-8 encoding of this string is the same as bytes, 0x630x32 |
| |
| ColumnIdentifier c1 = ColumnIdentifier.getInterned(ByteBuffer.wrap(bytes), bytesType); |
| ColumnIdentifier c2 = ColumnIdentifier.getInterned(utf8Type, utf8Type.fromString(text), text); |
| ColumnIdentifier c3 = ColumnIdentifier.getInterned(text, true); |
| |
| Assert.assertTrue(c1.isInterned()); |
| Assert.assertTrue(c2.isInterned()); |
| Assert.assertTrue(c3.isInterned()); |
| |
| Assert.assertEquals("6332", c1.toString()); |
| Assert.assertEquals(text, c2.toString()); |
| Assert.assertEquals(text, c3.toString()); |
| } |
| |
| @Test |
| public void testInterningUsesMinimalByteBuffer() |
| { |
| byte[] bytes = new byte[2]; |
| bytes[0] = 0x63; |
| ByteBuffer byteBuffer = ByteBuffer.wrap(bytes); |
| byteBuffer.limit(1); |
| |
| ColumnIdentifier c1 = ColumnIdentifier.getInterned(byteBuffer, UTF8Type.instance); |
| |
| Assert.assertEquals(2, byteBuffer.capacity()); |
| Assert.assertEquals(1, c1.bytes.capacity()); |
| } |
| } |