tkalkirill commented on a change in pull request #697: URL: https://github.com/apache/ignite-3/pull/697#discussion_r838240632
########## File path: modules/storage-page-memory/src/main/java/org/apache/ignite/internal/storage/pagememory/io/TableInnerIo.java ########## @@ -0,0 +1,111 @@ +/* + * 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.ignite.internal.storage.pagememory.io; + +import static org.apache.ignite.internal.pagememory.util.PageUtils.getInt; +import static org.apache.ignite.internal.pagememory.util.PageUtils.getLong; +import static org.apache.ignite.internal.pagememory.util.PageUtils.putInt; +import static org.apache.ignite.internal.pagememory.util.PageUtils.putLong; +import static org.apache.ignite.internal.storage.pagememory.TableTree.RowData.KEY_ONLY; + +import org.apache.ignite.internal.pagememory.io.IoVersions; +import org.apache.ignite.internal.pagememory.tree.BplusTree; +import org.apache.ignite.internal.pagememory.tree.io.BplusInnerIo; +import org.apache.ignite.internal.pagememory.tree.io.BplusIo; +import org.apache.ignite.internal.storage.pagememory.TableSearchRow; +import org.apache.ignite.internal.storage.pagememory.TableTree; +import org.apache.ignite.lang.IgniteInternalCheckedException; + +/** + * IO routines for {@link TableTree} inner pages. + * + * <p>Structure: hash(int) + link(long). + */ +public class TableInnerIo extends BplusInnerIo<TableSearchRow> implements RowIo { + /** Page IO type. */ + public static final short T_TABLE_INNER_IO = 4; + + /** I/O versions. */ + public static final IoVersions<TableInnerIo> VERSIONS = new IoVersions<>(new TableInnerIo(1)); + + /** + * Constructor. + * + * @param ver Page format version. + */ + protected TableInnerIo(int ver) { + super( + T_TABLE_INNER_IO, + ver, + true, + Integer.BYTES + Long.BYTES // hash(int) + link(long); + ); + } + + /** {@inheritDoc} */ + @Override + public void store(long dstPageAddr, int dstIdx, BplusIo<TableSearchRow> srcIo, long srcPageAddr, int srcIdx) { + assertPageType(dstPageAddr); + + int srcHash = hash(srcPageAddr, srcIdx); + long srcLink = link(srcPageAddr, srcIdx); + + int dstOff = offset(dstIdx); + + putInt(dstPageAddr, dstOff, srcHash); + dstOff += 4; + + putLong(dstPageAddr, dstOff, srcLink); + } + + /** {@inheritDoc} */ + @Override + public void storeByOffset(long pageAddr, int off, TableSearchRow row) { + assertPageType(pageAddr); + + putInt(pageAddr, off, row.hash()); + off += 4; + + putLong(pageAddr, off, row.link()); + } + + /** {@inheritDoc} */ + @Override + public TableSearchRow getLookupRow(BplusTree<TableSearchRow, ?> tree, long pageAddr, int idx) throws IgniteInternalCheckedException { + int hash = hash(pageAddr, idx); + long link = link(pageAddr, idx); + + return ((TableTree) tree).getRowByLink(link, hash, KEY_ONLY); + } + + /** {@inheritDoc} */ + @Override + public long link(long pageAddr, int idx) { + assert idx < getCount(pageAddr) : idx; + + return getLong(pageAddr, offset(idx) + 4 /* hash ahead */); Review comment: Replaced by the constant LINK_OFFSET -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
