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Introduce RelationshipTypeItem instead of using a generic IntSupplier
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77 changes: 77 additions & 0 deletions
77
community/kernel/src/main/java/org/neo4j/kernel/impl/api/store/RelationshipTypeCursor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * Copyright (c) 2002-2017 "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 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 General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.api.store; | ||
|
|
||
| import org.neo4j.collection.primitive.Primitive; | ||
| import org.neo4j.collection.primitive.PrimitiveIntSet; | ||
| import org.neo4j.cursor.Cursor; | ||
| import org.neo4j.storageengine.api.RelationshipItem; | ||
| import org.neo4j.storageengine.api.RelationshipTypeItem; | ||
|
|
||
| import static org.neo4j.kernel.api.StatementConstants.NO_SUCH_RELATIONSHIP_TYPE; | ||
|
|
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| class RelationshipTypeCursor implements Cursor<RelationshipTypeItem>, RelationshipTypeItem | ||
| { | ||
| private final PrimitiveIntSet foundTypes; | ||
| private final Cursor<RelationshipItem> relationships; | ||
|
|
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| private int value = NO_SUCH_RELATIONSHIP_TYPE; | ||
|
|
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| RelationshipTypeCursor( Cursor<RelationshipItem> relationships ) | ||
| { | ||
| this.relationships = relationships; | ||
| foundTypes = Primitive.intSet( 5 ); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean next() | ||
| { | ||
| while ( relationships.next() ) | ||
| { | ||
| if ( !foundTypes.contains( relationships.get().type() ) ) | ||
| { | ||
| foundTypes.add( relationships.get().type() ); | ||
| value = relationships.get().type(); | ||
| return true; | ||
| } | ||
| } | ||
|
|
||
| value = NO_SUCH_RELATIONSHIP_TYPE; | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| public void close() | ||
| { | ||
| relationships.close(); | ||
| } | ||
|
|
||
| @Override | ||
| public RelationshipTypeItem get() | ||
| { | ||
| return this; | ||
| } | ||
|
|
||
| @Override | ||
| public int getAsInt() | ||
| { | ||
| return value; | ||
| } | ||
| } |
80 changes: 80 additions & 0 deletions
80
...ity/kernel/src/main/java/org/neo4j/kernel/impl/api/store/RelationshipTypeDenseCursor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /* | ||
| * Copyright (c) 2002-2017 "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 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 General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.kernel.impl.api.store; | ||
|
|
||
| import org.neo4j.cursor.Cursor; | ||
| import org.neo4j.kernel.impl.store.RecordCursors; | ||
| import org.neo4j.kernel.impl.store.record.Record; | ||
| import org.neo4j.kernel.impl.store.record.RelationshipGroupRecord; | ||
| import org.neo4j.storageengine.api.RelationshipTypeItem; | ||
|
|
||
| import static org.neo4j.kernel.api.StatementConstants.NO_SUCH_RELATIONSHIP_TYPE; | ||
| import static org.neo4j.kernel.impl.store.record.RecordLoad.FORCE; | ||
|
|
||
| class RelationshipTypeDenseCursor implements Cursor<RelationshipTypeItem>, RelationshipTypeItem | ||
| { | ||
| private final RelationshipGroupRecord groupRecord; | ||
| private RecordCursors recordCursors; | ||
|
|
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| private long groupId; | ||
| private int value = NO_SUCH_RELATIONSHIP_TYPE; | ||
|
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| RelationshipTypeDenseCursor( long groupId, RelationshipGroupRecord groupRecord, RecordCursors recordCursors ) | ||
| { | ||
| this.groupId = groupId; | ||
| this.groupRecord = groupRecord; | ||
| this.recordCursors = recordCursors; | ||
| } | ||
|
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| @Override | ||
| public boolean next() | ||
| { | ||
| while ( groupId != Record.NO_NEXT_RELATIONSHIP.intValue() ) | ||
| { | ||
| boolean groupRecordInUse = recordCursors.relationshipGroup().next( groupId, groupRecord, FORCE ); | ||
| groupId = groupRecord.getNext(); | ||
| if ( groupRecordInUse ) | ||
| { | ||
| value = groupRecord.getType(); | ||
| return true; | ||
| } | ||
| } | ||
|
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| value = NO_SUCH_RELATIONSHIP_TYPE; | ||
| return false; | ||
| } | ||
|
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| @Override | ||
| public void close() | ||
| { | ||
| } | ||
|
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| @Override | ||
| public RelationshipTypeItem get() | ||
| { | ||
| return this; | ||
| } | ||
|
|
||
| @Override | ||
| public int getAsInt() | ||
| { | ||
| return value; | ||
| } | ||
| } |
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