Examples of com.dyuproject.protostuff.me.CompareInputsTest$Deserializer

org.apache.hadoop.hive.serde2.Deserializer
Benchmark to compare the deserialization speed of 2 types. CodedInput and ByteArrayInput. @author David Yu @created Jun 22, 2010

  /**
   * Check if the given serde is valid.
   */
  private void validateSerDe(String serdeName) throws HiveException {
    try {
      Deserializer d = SerDeUtils.lookupDeserializer(serdeName);
      if (d != null) {
        LOG.debug("Found class for " + serdeName);
      }
    } catch (SerDeException e) {
      throw new HiveException("Cannot validate serde: " + serdeName, e);

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    public static Deserializer getDeserializer(Properties schema)
    {
        String name = schema.getProperty(SERIALIZATION_LIB);
        checkArgument(name != null, "missing property: %s", SERIALIZATION_LIB);


        Deserializer deserializer = createDeserializer(getDeserializerClass(name));
        initializeDeserializer(deserializer, schema);
        return deserializer;
    }

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   *
   */
  static public Deserializer getDeserializer(Configuration conf, Properties schema) throws MetaException  {
    String lib = schema.getProperty(org.apache.hadoop.hive.serde.Constants.SERIALIZATION_LIB);
    try {
      Deserializer deserializer = SerDeUtils.lookupDeserializer(lib);
      ((Deserializer)deserializer).initialize(conf, schema);
      return deserializer;
    } catch (Exception e) {
      LOG.error("error in initSerDe: " + e.getClass().getName() + " " + e.getMessage());
      MetaStoreUtils.printStackTrace(e);

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   *
   */
  static public Deserializer getDeserializer(Configuration conf, org.apache.hadoop.hive.metastore.api.Table table) throws MetaException  {
    String lib = table.getSd().getSerdeInfo().getSerializationLib();
    try {
      Deserializer deserializer = SerDeUtils.lookupDeserializer(lib);
      deserializer.initialize(conf, MetaStoreUtils.getSchema(table));
      return deserializer;
    } catch (Exception e) {
      LOG.error("error in initSerDe: " + e.getClass().getName() + " " + e.getMessage());
      MetaStoreUtils.printStackTrace(e);
      throw new MetaException(e.getClass().getName() + " " + e.getMessage());

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      }
      // xxx


      try {
        //            Table t = Table.readTable(p, this.db);
        Deserializer s = MetaStoreUtils.getDeserializer( conf_, p);
        ObjectInspector oi = s.getObjectInspector();
        
        // recurse down the type.subtype.subsubtype expression until at the desired type
        for(int i =  1; i < names.length; i++) {
          if (!(oi instanceof StructObjectInspector)) {
            oi = s.getObjectInspector();
            break;
          }
          StructObjectInspector soi = (StructObjectInspector)oi;
          StructField sf = soi.getStructFieldRef(names[i]);
          if (sf == null) {
            // If invalid field, then return the schema of the table
            oi = s.getObjectInspector();
            break;
          } else {
            oi = sf.getFieldObjectInspector();
          }
        }

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          tbl = this.get_table(db, base_table_name);
        } catch (NoSuchObjectException e) {
          throw new UnknownTableException(e.getMessage());
        }
        try {
          Deserializer s = MetaStoreUtils.getDeserializer(this.hiveConf, tbl);
          return MetaStoreUtils.getFieldsFromDeserializer(tableName, s);
        } catch(SerDeException e) {
          StringUtils.stringifyException(e);
          throw new MetaException(e.getMessage());
        }

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   */
  Operator genConversionSelectOperator(String dest, QB qb,
      Operator input, tableDesc table_desc) throws SemanticException {
    StructObjectInspector oi = null;
    try {
      Deserializer deserializer = table_desc.getDeserializerClass().newInstance();
      deserializer.initialize(conf, table_desc.getProperties());
      oi = (StructObjectInspector) deserializer.getObjectInspector();
    } catch (Exception e) {
      throw new SemanticException(e);
    }
    
    // Check column number

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  /**
   * Check if the given serde is valid
   */
  private void validateSerDe(String serdeName) throws HiveException {
    try {
      Deserializer d = SerDeUtils.lookupDeserializer(serdeName);
      if(d != null) {
        System.out.println("Found class for " + serdeName);
      }
    } catch (SerDeException e) {
      throw new HiveException ("Cannot validate serde: " + serdeName, e);

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    String tableName = String.valueOf(tblProps.getProperty("name"));
    String partName = String.valueOf(partSpec);
    //HiveConf.setVar(hconf, HiveConf.ConfVars.HIVETABLENAME, tableName);
    //HiveConf.setVar(hconf, HiveConf.ConfVars.HIVEPARTITIONNAME, partName);
    Deserializer deserializer = (Deserializer) sdclass.newInstance();
    deserializer.initialize(hconf, tblProps);
    StructObjectInspector rowObjectInspector = (StructObjectInspector)deserializer.getObjectInspector();


    MapOpCtx opCtx = null;
    // Next check if this table has partitions and if so
    // get the list of partition names as well as allocate
    // the serdes for the partition columns

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  }
  /**
   * Return a deserializer object corresponding to the tableDesc
   */
  public Deserializer getDeserializer() throws Exception {
    Deserializer de = this.deserializerClass.newInstance();
    de.initialize(null, properties);
    return de;
  }

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