Examples of org.apache.thrift.TDeserializer

org.apache.thrift.TDeserializer
Generic utility for easily deserializing objects from a byte array or Java String.

     */
    static void deserialize(TBase obj, byte[] data) throws IOException {
        if (data == null || data.length == 0)
            return;
        try {
            TDeserializer deserializer = new TDeserializer(
                new TBinaryProtocol.Factory());
            deserializer.deserialize(obj, data);
        } catch (Exception e) {
            throw new IOException("Deserialization error: " + e.getMessage(), e);
        }
    }

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    /** convert string to a list of index expression */
    private static List<IndexExpression> indexExpressionsFromString(String ie) throws IOException
    {
        assert ie != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        IndexClause indexClause = new IndexClause();
        try
        {
            deserializer.deserialize(indexClause, Hex.hexToBytes(ie));
        }
        catch (TException e)
        {
            throw new IOException(e);
        }

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    /** convert string back to CfDef */
    protected static CfDef cfdefFromString(String st) throws IOException
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        CfDef cfDef = new CfDef();
        try
        {
            deserializer.deserialize(cfDef, Hex.hexToBytes(st));
        }
        catch (TException e)
        {
            throw new IOException(e);
        }

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    return encodeIteratorSettings(toIteratorConfig(iterators));
  }




  public static List<IteratorSetting> decodeIteratorSettings(byte[] enc) {
    TDeserializer tdser = new TDeserializer(new TBinaryProtocol.Factory());
    IteratorConfig ic = new IteratorConfig();
    try {
      tdser.deserialize(ic, enc);
    } catch (TException e) {
      throw new RuntimeException(e);
    }
    return toIteratorSettings(ic);
  }

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    }


    @Override
    public void initialize() {
      this.instance = ReflectionUtils.newInstance(clazz, null);
      this.deserializer = new TDeserializer(new TBinaryProtocol.Factory());
      this.bytes = new byte[0];
    }

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    }


    private static SlicePredicate predicateFromString(String st)
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        SlicePredicate predicate = new SlicePredicate();
        try
        {
            deserializer.deserialize(predicate, FBUtilities.hexToBytes(st));
        }
        catch (TException e)
        {
            throw new RuntimeException(e);
        }

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    }


    private static CfDef cfdefFromString(String st)
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        CfDef cfDef = new CfDef();
        try
        {
            deserializer.deserialize(cfDef, FBUtilities.hexToBytes(st));
        }
        catch (TException e)
        {
            throw new RuntimeException(e);
        }

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        fcversion = jsonContainer.getString("fcversion");
      } catch (JSONException ignored) {}
      checkCompatibility(version, fcversion);
      String tableDesc = jsonContainer.getString("table");
      Table table = new Table();
      TDeserializer deserializer = new TDeserializer(new TJSONProtocol.Factory());
      deserializer.deserialize(table, tableDesc, "UTF-8");
      JSONArray jsonPartitions = new JSONArray(jsonContainer.getString("partitions"));
      List<Partition> partitionsList = new ArrayList<Partition>(jsonPartitions.length());
      for (int i = 0; i < jsonPartitions.length(); ++i) {
        String partDesc = jsonPartitions.getString(i);
        Partition partition = new Partition();
        deserializer.deserialize(partition, partDesc, "UTF-8");
        partitionsList.add(partition);
      }
      return new AbstractMap.SimpleEntry<Table, List<Partition>>(table, partitionsList);
    } catch (JSONException e) {
      throw new SemanticException(ErrorMsg.GENERIC_ERROR.getMsg("Error in serializing metadata"), e);

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  public void testTDeserializer() throws TException {
    TSerializer ser = new TSerializer(getFactory());
    byte[] bytes = ser.serialize(Fixtures.compactProtoTestStruct);


    TDeserializer deser = new TDeserializer(getFactory());
    CompactProtoTestStruct cpts = new CompactProtoTestStruct();
    deser.deserialize(cpts, bytes);


    assertEquals(Fixtures.compactProtoTestStruct, cpts);
  }

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      long serElapsed = serEnd - serStart;
      System.out.println("Ser:\t" + serElapsed + "ms\t" 
          + ((double)serElapsed / NUM_REPS) + "ms per serialization");


      HolyMoley cpts = new HolyMoley();
      TDeserializer deser = new TDeserializer(getFactory());
      long deserStart = System.currentTimeMillis();
      for (int rep = 0; rep < NUM_REPS; rep++) {
        deser.deserialize(cpts, serialized);
      }
      long deserEnd = System.currentTimeMillis();
      long deserElapsed = deserEnd - deserStart;
      System.out.println("Des:\t" + deserElapsed + "ms\t" 
          + ((double)deserElapsed / NUM_REPS) + "ms per deserialization");

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