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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.api.exceptions.schema;

import org.neo4j.common.TokenNameLookup;
import org.neo4j.internal.kernel.api.exceptions.schema.SchemaKernelException;
import org.neo4j.internal.schema.SchemaDescriptor;
import org.neo4j.kernel.api.exceptions.Status;

public abstract class RepeatedSchemaComponentException extends SchemaKernelException
{
    private final SchemaDescriptor schema;
    private final OperationContext context;
    private final SchemaComponent component;

    RepeatedSchemaComponentException( Status status, SchemaDescriptor schema, OperationContext context, SchemaComponent component,
            TokenNameLookup tokenNameLookup )
    {
        super( status, format( schema, context, tokenNameLookup, component ) );
        this.schema = schema;
        this.context = context;
        this.component = component;
    }

    @Override
    public String getUserMessage( TokenNameLookup tokenNameLookup )
    {
        return format( schema, context, tokenNameLookup, component );
    }

    enum SchemaComponent
    {
        PROPERTY( "property" ),
        LABEL( "label" ),
        RELATIONSHIP_TYPE( "relationship type" );

        private final String name;

        SchemaComponent( String name )
        {
            this.name = name;
        }
    }

    private static String format( SchemaDescriptor schema, OperationContext context, TokenNameLookup tokenNameLookup, SchemaComponent component )
    {
        String schemaName;
        switch ( context )
        {
        case INDEX_CREATION:
            schemaName = "Index";
            break;

        case CONSTRAINT_CREATION:
            schemaName = "Constraint";
            break;

        default:
            schemaName = "Schema object";
            break;
        }
        return String.format( "%s on %s includes a %s more than once.",
                schemaName, schema.userDescription( tokenNameLookup ), component.name );

    }
}