org.neo4j.commandline.dbms.storeutil.ReadOnlyTokenRead Maven / Gradle / Ivy

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This component provides management functionality and product surface for Neo4j instances.
There is a newer version: 5.23.0
/*
 * Copyright (c) 2002-2020 "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.commandline.dbms.storeutil;

import java.util.Iterator;

import org.neo4j.internal.kernel.api.TokenRead;
import org.neo4j.internal.kernel.api.exceptions.LabelNotFoundKernelException;
import org.neo4j.internal.kernel.api.exceptions.PropertyKeyIdNotFoundKernelException;
import org.neo4j.internal.kernel.api.exceptions.RelationshipTypeIdNotFoundKernelException;
import org.neo4j.token.TokenHolders;
import org.neo4j.token.api.NamedToken;
import org.neo4j.token.api.TokenNotFoundException;

public class ReadOnlyTokenRead implements TokenRead
{
    private final TokenHolders tokenHolders;

    ReadOnlyTokenRead( TokenHolders tokenHolders )
    {
        this.tokenHolders = tokenHolders;
    }

    @Override
    public int nodeLabel( String name )
    {
        return tokenHolders.labelTokens().getIdByName( name );
    }

    @Override
    public String nodeLabelName( int labelId ) throws LabelNotFoundKernelException
    {
        try
        {
            return tokenHolders.labelTokens().getTokenById( labelId ).name();
        }
        catch ( TokenNotFoundException e )
        {
            throw new LabelNotFoundKernelException( labelId, e );
        }
    }

    @Override
    public int relationshipType( String name )
    {
        return tokenHolders.relationshipTypeTokens().getIdByName( name );
    }

    @Override
    public String relationshipTypeName( int relationshipTypeId ) throws RelationshipTypeIdNotFoundKernelException
    {
        try
        {
            return tokenHolders.relationshipTypeTokens().getTokenById( relationshipTypeId ).name();
        }
        catch ( TokenNotFoundException e )
        {
            throw new RelationshipTypeIdNotFoundKernelException( relationshipTypeId, e );
        }
    }

    @Override
    public int propertyKey( String name )
    {
        return tokenHolders.propertyKeyTokens().getIdByName( name );
    }

    @Override
    public String propertyKeyName( int propertyKeyId ) throws PropertyKeyIdNotFoundKernelException
    {
        try
        {
            return tokenHolders.propertyKeyTokens().getTokenById( propertyKeyId ).name();
        }
        catch ( TokenNotFoundException e )
        {
            throw new PropertyKeyIdNotFoundKernelException( propertyKeyId, e );
        }
    }

    @Override
    public Iterator labelsGetAllTokens()
    {
        return tokenHolders.labelTokens().getAllTokens().iterator();
    }

    @Override
    public Iterator propertyKeyGetAllTokens()
    {
        return tokenHolders.propertyKeyTokens().getAllTokens().iterator();
    }

    @Override
    public Iterator relationshipTypesGetAllTokens()
    {
        return tokenHolders.relationshipTypeTokens().getAllTokens().iterator();
    }

    @Override
    public int labelCount()
    {
        return tokenHolders.labelTokens().size();
    }

    @Override
    public int propertyKeyCount()
    {
        return tokenHolders.propertyKeyTokens().size();
    }

    @Override
    public int relationshipTypeCount()
    {
        return tokenHolders.relationshipTypeTokens().size();
    }
}