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60 changes: 60 additions & 0 deletions
60
...ernel/src/main/java/org/neo4j/kernel/impl/store/format/highlimit/EnterpriseHighLimit.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * Copyright (c) 2002-2016 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as | ||
| * published by the Free Software Foundation, either version 3 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.store.format.highlimit; | ||
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| import org.neo4j.kernel.impl.store.format.RecordFormat; | ||
| import org.neo4j.kernel.impl.store.record.NodeRecord; | ||
| import org.neo4j.kernel.impl.store.record.RelationshipGroupRecord; | ||
| import org.neo4j.kernel.impl.store.record.RelationshipRecord; | ||
|
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| /** | ||
| * Record format with very high limits, 50-bit per ID, as well the ability to use two record units per record, while at | ||
| * the same time keeping store size small. | ||
| * | ||
| * @see HighLimit | ||
| */ | ||
| public class EnterpriseHighLimit extends HighLimit | ||
| { | ||
| @Override | ||
| public String storeVersion() | ||
| { | ||
| // Enterprise.HighLimit.Zero | ||
| return "vE.H.0"; | ||
| } | ||
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| @Override | ||
| public RecordFormat<NodeRecord> node() | ||
| { | ||
| return new NodeRecordFormat( new EnterpriseRecordIO<>() ); | ||
| } | ||
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| @Override | ||
| public RecordFormat<RelationshipRecord> relationship() | ||
| { | ||
| return new RelationshipRecordFormat( new EnterpriseRecordIO<>() ); | ||
| } | ||
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| @Override | ||
| public RecordFormat<RelationshipGroupRecord> relationshipGroup() | ||
| { | ||
| return new RelationshipGroupRecordFormat( new EnterpriseRecordIO<>() ); | ||
| } | ||
| } |
87 changes: 87 additions & 0 deletions
87
...kernel/src/main/java/org/neo4j/kernel/impl/store/format/highlimit/EnterpriseRecordIO.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| * Copyright (c) 2002-2016 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as | ||
| * published by the Free Software Foundation, either version 3 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.store.format.highlimit; | ||
|
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| import java.io.IOException; | ||
| import java.util.function.Consumer; | ||
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| import org.neo4j.function.ThrowingConsumer; | ||
| import org.neo4j.io.pagecache.PageCursor; | ||
| import org.neo4j.io.pagecache.PagedFile; | ||
| import org.neo4j.kernel.impl.store.format.highlimit.Reference.DataAdapter; | ||
| import org.neo4j.kernel.impl.store.record.AbstractBaseRecord; | ||
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| import static org.neo4j.kernel.impl.store.RecordPageLocationCalculator.offsetForId; | ||
| import static org.neo4j.kernel.impl.store.RecordPageLocationCalculator.pageIdForRecord; | ||
| import static org.neo4j.kernel.impl.store.format.highlimit.Reference.PAGE_CURSOR_ADAPTER; | ||
|
|
||
| /** | ||
| * Enterprise supports double record units for records. | ||
| */ | ||
| public class EnterpriseRecordIO<RECORD extends AbstractBaseRecord> implements RecordIO<RECORD> | ||
| { | ||
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| @Override | ||
| public void read( RECORD record, PageCursor primaryCursor, int recordSize, PagedFile storeFile, | ||
| Consumer<DataAdapter<PageCursor>> reader ) throws IOException | ||
| { | ||
| int primaryEndOffset = primaryCursor.getOffset() + recordSize - 1 /*we've already read the header byte*/; | ||
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| // This is a record that is split into multiple record units. We need a bit more clever | ||
| // data structures here. For the time being this means instantiating one object, | ||
| // but the trade-off is a great reduction in complexity. | ||
| long secondaryId = Reference.decode( primaryCursor, PAGE_CURSOR_ADAPTER ); | ||
| @SuppressWarnings( "resource" ) SecondaryPageCursorReadDataAdapter readAdapter = | ||
| new SecondaryPageCursorReadDataAdapter( primaryCursor, storeFile, | ||
| pageIdForRecord( secondaryId, storeFile.pageSize(), recordSize ), | ||
| offsetForId( secondaryId, storeFile.pageSize(), recordSize ), primaryEndOffset, | ||
| PagedFile.PF_SHARED_READ_LOCK ); | ||
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| try ( SecondaryPageCursorControl secondaryPageCursorControl = readAdapter ) | ||
| { | ||
| do | ||
| { | ||
| // (re)sets offsets for both cursors | ||
| secondaryPageCursorControl.reposition(); | ||
| //doReadInternal( record, primaryCursor, recordSize, headerByte, inUse, readAdapter ); | ||
| reader.accept( readAdapter ); | ||
| } | ||
| while ( secondaryPageCursorControl.shouldRetry() ); | ||
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| record.setSecondaryId( secondaryId ); | ||
| } | ||
| } | ||
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| @Override | ||
| public void write( RECORD record, PageCursor primaryCursor, int recordSize, PagedFile storeFile, | ||
| ThrowingConsumer<DataAdapter<PageCursor>, IOException> writer ) throws IOException | ||
| { | ||
| int primaryEndOffset = primaryCursor.getOffset() + recordSize - 1 /*we've already written the header byte*/; | ||
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| // Write using the normal adapter since the first reference we write cannot really overflow | ||
| // into the secondary record | ||
| Reference.encode( record.getSecondaryId(), primaryCursor, PAGE_CURSOR_ADAPTER ); | ||
| DataAdapter<PageCursor> dataAdapter = new SecondaryPageCursorWriteDataAdapter( | ||
| pageIdForRecord( record.getSecondaryId(), storeFile.pageSize(), recordSize ), | ||
| offsetForId( record.getSecondaryId(), storeFile.pageSize(), recordSize ), primaryEndOffset ); | ||
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| writer.accept( dataAdapter ); | ||
| } | ||
| } |