Java Code Examples for com.netflix.astyanax.model.Column#getValue()

@Override
public MvccEntity parseColumn( Column<UUID> column ) {

    final EntityWrapper deSerialized;
    final UUID version = column.getName();

    try {
        deSerialized = column.getValue( entityJsonSerializer );
    }
    catch ( DataCorruptionException e ) {
        logger.error(
                "DATA CORRUPTION DETECTED when de-serializing entity with Id {} and version {}.  This means the write was truncated.",
                id, version, e );
        //return an empty entity, we can never load this one, and we don't want it to bring the system
        //to a grinding halt
        return new MvccEntityImpl( id, version, MvccEntity.Status.DELETED, Optional.<Entity>absent(),0 );
    }

    //Inject the id into it.
    if ( deSerialized.entity.isPresent() ) {
        EntityUtils.setId( deSerialized.entity.get(), id );
    }

    return new MvccEntityImpl( id, version, deSerialized.status, deSerialized.entity, 0 );
}
 

@Override
public MvccEntity parseColumn( Column<Boolean> column ) {

    final EntityWrapper deSerialized;

    try {
        deSerialized = column.getValue( entityJsonSerializer );
    }
    catch ( DataCorruptionException e ) {
        log.error(
                "DATA CORRUPTION DETECTED when de-serializing entity with Id {}.  This means the"
                        + " write was truncated.", id, e );
        //return an empty entity, we can never load this one, and we don't want it to bring the system
        //to a grinding halt
        //TODO fix this
        return new MvccEntityImpl( id, UUIDGenerator.newTimeUUID(), MvccEntity.Status.DELETED, Optional.<Entity>absent() );
    }
    Optional<Entity> entity = deSerialized.getOptionalEntity() ;
    return new MvccEntityImpl( id, deSerialized.getVersion(), deSerialized.getStatus(), entity, deSerialized.getSize());
}
 

/** Example CQL schema for this table
 *
 * CREATE TABLE "Usergrid_Applications"."Edge_Shards" (
 *    key blob,
 *    column1 bigint,
 *    value blob,
 *    PRIMARY KEY (key, column1)
 *    ) WITH COMPACT STORAGE
 *    AND CLUSTERING ORDER BY (column1 DESC)
 *
 *
 *
 */


@Override
public Shard parseColumn( final Column<Long> column ) {

    // A custom serializer was introduced to handle parsing multiple column formats without re-writing the data.
    // The column can be stored as a legacy, single boolean, value OR a new, composite, value which contains
    // every item in the shard. If the legacy value is seen, we return a shard with Long.MIN for index and
    // createdTime so it can be identified later and handled.

    try {

        return column.getValue(SHARD_SERIALIZER);

    } catch ( Exception e) {

        // unable to parse the new format so return the old format
        return new Shard(column.getName(), column.getTimestamp(), column.getBooleanValue());

    }

}
 

private List<MvccLogEntry> parseResults( final ColumnList<UUID> columns, final Id entityId ) {

        List<MvccLogEntry> results = new ArrayList<MvccLogEntry>( columns.size() );

        for ( Column<UUID> col : columns ) {
            final UUID storedVersion = col.getName();
            final StageStatus stage = col.getValue( SER );

            results.add( new MvccLogEntryImpl( entityId, storedVersion, stage.stage, stage.state ) );
        }

        return results;
    }