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TokenRead.java
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TokenRead.java
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/*
* Copyright (c) 2002-2018 "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.internal.kernel.api.exceptions.LabelNotFoundKernelException;
import org.neo4j.internal.kernel.api.exceptions.PropertyKeyIdNotFoundKernelException;
public interface TokenRead
{
/**
* Value indicating the a token does not exist in the graph.
*/
int NO_TOKEN = -1;
/**
* Returns the name corresponding to given token
* @param token The token associated with the name
* @return The name corresponding to the token
* @throws LabelNotFoundKernelException if the token doesn't exist in the database
*/
String labelGetName( int token ) throws LabelNotFoundKernelException;
/**
* Returns the token corresponding to the provided name
* @param name The name associated with the token
* @return The token corresponding withe
*/
int labelGetForName( String name );
/**
* Return the id of the provided label, or NO_TOKEN if the label isn't known to the graph.
*
* @param name The label name.
* @return the label id, or NO_TOKEN
*/
int nodeLabel( String name );
/**
* Return the id of the provided relationship type, or NO_TOKEN if the type isn't known to the graph.
*
* @param name The relationship type name.
* @return the relationship type id, or NO_TOKEN
*/
int relationshipType( String name );
/**
* Return the id of the provided property key, or NO_TOKEN if the property isn't known to the graph.
*
* @param name The property key name.
* @return the property key id, or NO_TOKEN
*/
int propertyKey( String name );
/**
* Returns the name of a property given its property key id
*
* @param propertyKeyId The id of the property
* @return The name of the key
* @throws PropertyKeyIdNotFoundKernelException if no key is associated with the id
*/
String propertyKeyGetName( int propertyKeyId ) throws PropertyKeyIdNotFoundKernelException;
}