LdbcQuery13.java

package com.ldbc.driver.workloads.ldbc.snb.interactive;

import com.ldbc.driver.Operation;
import com.ldbc.driver.SerializingMarshallingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.TypeReference;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import static java.lang.String.format;

public class LdbcQuery13 extends Operation<LdbcQuery13Result>
{
    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();

    public static final int TYPE = 13;
    private final long person1Id;
    private final long person2Id;

    public LdbcQuery13( long person1Id, long person2Id )
    {
        this.person1Id = person1Id;
        this.person2Id = person2Id;
    }

    public long person1Id()
    {
        return person1Id;
    }

    public long person2Id()
    {
        return person2Id;
    }

    @Override
    public boolean equals( Object o )
    {
        if ( this == o )
        { return true; }
        if ( o == null || getClass() != o.getClass() )
        { return false; }

        LdbcQuery13 that = (LdbcQuery13) o;

        if ( person1Id != that.person1Id )
        { return false; }
        if ( person2Id != that.person2Id )
        { return false; }

        return true;
    }

    @Override
    public int hashCode()
    {
        int result = (int) (person1Id ^ (person1Id >>> 32));
        result = 31 * result + (int) (person2Id ^ (person2Id >>> 32));
        return result;
    }

    @Override
    public String toString()
    {
        return "LdbcQuery13{" +
               "person1Id=" + person1Id +
               ", person2Id=" + person2Id +
               '}';
    }

    @Override
    public LdbcQuery13Result marshalResult( String serializedResult ) throws SerializingMarshallingException
    {
        List<Object> resultAsList;
        try
        {
            resultAsList = OBJECT_MAPPER.readValue( serializedResult, new TypeReference<List<Object>>()
            {
            } );
        }
        catch ( IOException e )
        {
            throw new SerializingMarshallingException(
                    format( "Error while parsing serialized results\n%s", serializedResult ), e );
        }

        int shortestPathLength = ((Number) resultAsList.get( 0 )).intValue();
        return new LdbcQuery13Result( shortestPathLength );
    }

    @Override
    public String serializeResult( Object resultObject ) throws SerializingMarshallingException
    {
        LdbcQuery13Result result = (LdbcQuery13Result) resultObject;
        List<Object> resultFields = new ArrayList<>();
        resultFields.add( result.shortestPathLength() );

        try
        {
            return OBJECT_MAPPER.writeValueAsString( resultFields );
        }
        catch ( IOException e )
        {
            throw new SerializingMarshallingException(
                    format( "Error while trying to serialize result\n%s", result.toString() ), e );
        }
    }

    @Override
    public int type()
    {
        return TYPE;
    }
}