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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) 2002-2015 "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 .
 */
package org.neo4j.kernel.api.properties;

import java.lang.reflect.Array;

class PropertyConversion
{
    static DefinedProperty convertProperty( int propertyKeyId, Object value )
    {
        if ( value instanceof String )
        {
            return Property.stringProperty( propertyKeyId, (String) value );
        }
        if ( value instanceof Object[] )
        {
            return arrayProperty( propertyKeyId, (Object[]) value );
        }
        if ( value instanceof Long )
        {
            return Property.longProperty( propertyKeyId, (Long) value );
        }
        if ( value instanceof Integer )
        {
            return Property.intProperty( propertyKeyId, (Integer) value );
        }
        if ( value instanceof Boolean )
        {
            return Property.booleanProperty( propertyKeyId, (Boolean) value );
        }
        if ( value instanceof Double )
        {
            return Property.doubleProperty( propertyKeyId, (Double) value );
        }
        if ( value instanceof Float )
        {
            return Property.floatProperty( propertyKeyId, (Float) value );
        }
        if ( value instanceof Short )
        {
            return Property.shortProperty( propertyKeyId, (Short) value );
        }
        if ( value instanceof Byte )
        {
            return Property.byteProperty( propertyKeyId, (Byte) value );
        }
        if ( value instanceof Character )
        {
            return Property.charProperty( propertyKeyId, (Character) value );
        }
        if ( value instanceof byte[] )
        {
            return Property.byteArrayProperty( propertyKeyId, ((byte[]) value).clone() );
        }
        if ( value instanceof long[] )
        {
            return Property.longArrayProperty( propertyKeyId, ((long[]) value).clone() );
        }
        if ( value instanceof int[] )
        {
            return Property.intArrayProperty( propertyKeyId, ((int[]) value).clone() );
        }
        if ( value instanceof double[] )
        {
            return Property.doubleArrayProperty( propertyKeyId, ((double[]) value).clone() );
        }
        if ( value instanceof float[] )
        {
            return Property.floatArrayProperty( propertyKeyId, ((float[]) value).clone() );
        }
        if ( value instanceof boolean[] )
        {
            return Property.booleanArrayProperty( propertyKeyId, ((boolean[]) value).clone() );
        }
        if ( value instanceof char[] )
        {
            return Property.charArrayProperty( propertyKeyId, ((char[]) value).clone() );
        }
        if ( value instanceof short[] )
        {
            return Property.shortArrayProperty( propertyKeyId, ((short[]) value).clone() );
        }
        // otherwise fail
        if ( value == null )
        {
            throw new IllegalArgumentException( "[null] is not a supported property value" );
        }
        else
        {
            throw new IllegalArgumentException(
                    String.format( "[%s:%s] is not a supported property value", value, value.getClass().getName() ) );
        }
    }

    private static DefinedProperty arrayProperty( int propertyKeyId, Object[] value )
    {
        if ( value instanceof String[] )
        {
            return Property.stringArrayProperty( propertyKeyId, copy( value, new String[value.length] ) );
        }
        if ( value instanceof Byte[] )
        {
            return Property.byteArrayProperty( propertyKeyId, copy( value, new byte[value.length] ) );
        }
        if ( value instanceof Long[] )
        {
            return Property.longArrayProperty( propertyKeyId, copy( value, new long[value.length] ) );
        }
        if ( value instanceof Integer[] )
        {
            return Property.intArrayProperty( propertyKeyId, copy( value, new int[value.length] ) );
        }
        if ( value instanceof Double[] )
        {
            return Property.doubleArrayProperty( propertyKeyId, copy( value, new double[value.length] ) );
        }
        if ( value instanceof Float[] )
        {
            return Property.floatArrayProperty( propertyKeyId, copy( value, new float[value.length] ) );
        }
        if ( value instanceof Boolean[] )
        {
            return Property.booleanArrayProperty( propertyKeyId, copy( value, new boolean[value.length] ) );
        }
        if ( value instanceof Character[] )
        {
            return Property.charArrayProperty( propertyKeyId, copy( value, new char[value.length] ) );
        }
        if ( value instanceof Short[] )
        {
            return Property.shortArrayProperty( propertyKeyId, copy( value, new short[value.length] ) );
        }
        throw new IllegalArgumentException(
                String.format( "%s[] is not a supported property value type",
                               value.getClass().getComponentType().getName() ) );
    }

    private static  T copy( Object[] value, T target )
    {
        for ( int i = 0; i < value.length; i++ )
        {
            if ( value[i] == null )
            {
                throw new IllegalArgumentException( "Property array value elements may not be null." );
            }
            Array.set( target, i, value[i] );
        }
        return target;
    }
}