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Write.java
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Write.java
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/*
* 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.internal.kernel.api;
import org.neo4j.values.storable.Value;
/**
* Defines the write operations of the Kernel API.
*/
public interface Write
{
/**
* Create a node.
* @return The internal id of the created node
*/
long nodeCreate();
/**
* Delete a node.
* @param node the internal id of the node to delete
*/
void nodeDelete( long node );
/**
* Create a relationship between two nodes.
* @param sourceNode the source internal node id
* @param relationshipLabel the label of the relationship to create
* @param targetNode the target internal node id
* @return the internal id of the created relationship
*/
long relationshipCreate( long sourceNode, int relationshipLabel, long targetNode );
/**
* Delete a relationship
* @param relationship the internal id of the relationship to delete
*/
void relationshipDelete( long relationship );
/**
* Add a label to a node
* @param node the internal node id
* @param nodeLabel the internal id of the label to add
*/
void nodeAddLabel( long node, int nodeLabel );
/**
* Remove a label from a node
* @param node the internal node id
* @param nodeLabel the internal id of the label to remove
*/
void nodeRemoveLabel( long node, int nodeLabel );
/**
* Set a property on a node
* @param node the internal node id
* @param propertyKey the property key id
* @param value the value to set
* @return The replaced value, or Values.NO_VALUE if the node did not have the property before
*/
Value nodeSetProperty( long node, int propertyKey, Value value );
/**
* Remove a property from a node
* @param node the internal node id
* @param propertyKey the property key id
* @return The removed value, or Values.NO_VALUE if the node did not have the property before
*/
Value nodeRemoveProperty( long node, int propertyKey );
/**
* Set a property on a relationship
* @param relationship the internal relationship id
* @param propertyKey the property key id
* @param value the value to set
* @return The replaced value, or Values.NO_VALUE if the relationship did not have the property before
*/
Value relationshipSetProperty( long relationship, int propertyKey, Value value );
/**
* Remove a property from a relationship
* @param node the internal relationship id
* @param propertyKey the property key id
* @return The removed value, or Values.NO_VALUE if the relationship did not have the property before
*/
Value relationshipRemoveProperty( long node, int propertyKey );
/**
* Set a property on the graph
* @param propertyKey the property key id
* @param value the value to set
* @return The replaced value, or Values.NO_VALUE if the graph did not have the property before
*/
Value graphSetProperty( int propertyKey, Value value );
/**
* Remove a property from the graph
* @param propertyKey the property key id
* @return The removed value, or Values.NO_VALUE if the graph did not have the property before
*/
Value graphRemoveProperty( int propertyKey );
}