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Neo4j kernel is a lightweight, embedded Java database designed to store data structured as graphs rather than tables. For more information, see http://neo4j.org.

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.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 .
 */
package org.neo4j.kernel.impl.constraints;

import org.neo4j.common.TokenNameLookup;
import org.neo4j.internal.kernel.api.CursorFactory;
import org.neo4j.internal.kernel.api.NodeCursor;
import org.neo4j.internal.kernel.api.NodeLabelIndexCursor;
import org.neo4j.internal.kernel.api.PropertyCursor;
import org.neo4j.internal.kernel.api.Read;
import org.neo4j.internal.kernel.api.RelationshipScanCursor;
import org.neo4j.internal.kernel.api.RelationshipTypeIndexCursor;
import org.neo4j.internal.kernel.api.exceptions.schema.CreateConstraintFailureException;
import org.neo4j.internal.schema.LabelSchemaDescriptor;
import org.neo4j.internal.schema.RelationTypeSchemaDescriptor;
import org.neo4j.io.pagecache.context.CursorContext;
import org.neo4j.memory.MemoryTracker;
import org.neo4j.storageengine.api.StorageReader;
import org.neo4j.storageengine.api.txstate.ReadableTransactionState;
import org.neo4j.storageengine.api.txstate.TxStateVisitor;

public interface ConstraintValidator
{
    void assertNodeKeyConstraintAllowed( LabelSchemaDescriptor descriptor ) throws CreateConstraintFailureException;

    void validateNodeKeyConstraint( NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor,
            TokenNameLookup tokenNameLookup ) throws CreateConstraintFailureException;

    void validateNodePropertyExistenceConstraint( NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor,
            LabelSchemaDescriptor descriptor, TokenNameLookup tokenNameLookup ) throws CreateConstraintFailureException;

    void validateRelationshipPropertyExistenceConstraint( RelationshipScanCursor relationshipCursor, PropertyCursor propertyCursor,
            RelationTypeSchemaDescriptor descriptor, TokenNameLookup tokenNameLookup )
            throws CreateConstraintFailureException;

    void validateRelationshipPropertyExistenceConstraint( RelationshipTypeIndexCursor allRelationships, RelationshipScanCursor relationshipCursor,
            PropertyCursor propertyCursor, RelationTypeSchemaDescriptor descriptor, TokenNameLookup tokenNameLookup )
            throws CreateConstraintFailureException;

    TxStateVisitor decorateTxStateVisitor( StorageReader storageReader, Read read, CursorFactory cursorFactory, ReadableTransactionState state,
            TxStateVisitor visitor, CursorContext cursorContext, MemoryTracker memoryTracker );

    void validateNodePropertyExistenceConstraint( NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor,
                                                  TokenNameLookup tokenNameLookup )
            throws CreateConstraintFailureException;

    void validateNodeKeyConstraint( NodeCursor nodeCursor, PropertyCursor propertyCursor,
                                    LabelSchemaDescriptor descriptor, TokenNameLookup tokenNameLookup ) throws CreateConstraintFailureException;
}