Ejemplo n.º 1
0
  // ChannelPutRequester
  @Override
  public void channelPutConnect(
      final Status status, final ChannelPut channelPut, final Structure structure) {
    if (!status.isSuccess()) {
      error = new Exception("Failed to connect 'put' for " + pv.getName() + ": " + status);
      updates.countDown();
      return;
    }

    try {
      final PVStructure write_structure =
          PVDataFactory.getPVDataCreate().createPVStructure(structure);
      final BitSet bit_set = new BitSet(write_structure.getNumberFields());

      // Locate the value field at deepest level in structure
      PVField field = null;
      PVStructure search = write_structure;
      while (search != null) {
        final PVField[] fields = search.getPVFields();
        if (fields.length != 1)
          throw new Exception(
              "Can only write to simple struct.element.value path, got " + structure);
        if (fields[0].getFieldName().equals("value")) {
          field = fields[0];
          break;
        } else if (fields[0] instanceof PVStructure) search = (PVStructure) fields[0];
        else search = null;
      }
      if (field == null) throw new Exception("Cannot locate 'value' to write in " + structure);

      // Enumerated? Write to value.index
      if (field instanceof PVStructure && "enum_t".equals(field.getField().getID()))
        field = ((PVStructure) field).getSubField("index");

      // Indicate what's changed & change it
      bit_set.set(field.getFieldOffset());
      PVStructureHelper.setField(field, new_value);

      // Perform write
      channelPut.put(write_structure, bit_set);
    } catch (Exception ex) {
      logger.log(Level.WARNING, "Failed to write " + pv.getName() + " = " + new_value, ex);
      error = new Exception("Failed to write " + pv.getName() + " = " + new_value, ex);
      updates.countDown();
    }
  }
Ejemplo n.º 2
0
  /* (non-Javadoc)
   * @see org.epics.pvaccess.client.ChannelPutRequester#channelPutConnect(org.epics.pvdata.pv.Status, org.epics.pvaccess.client.ChannelPut, org.epics.pvdata.pv.PVStructure, org.epics.pvdata.misc.BitSet)
   */
  @Override
  public void channelPutConnect(
      Status status, ChannelPut channelPut, PVStructure pvStructure, BitSet bitSet) {
    reportStatus("Failed to create ChannelPut instance", status);

    if (status.isSuccess()) {
      this.channelPut = channelPut;

      if (isChannelEnumType) {
        // handle inconsistent behavior
        this.channelPutValueField = pvStructure.getSubField("value");
        if (this.channelPutValueField instanceof PVStructure)
          this.channelPutValueField = ((PVStructure) pvStructure).getSubField("index");
      } else {
        this.channelPutValueField = pvStructure.getSubField("value");
      }

      // set BitSet
      bitSet.clear(); // re-connect case
      if (this.channelPutValueField != null) bitSet.set(channelPutValueField.getFieldOffset());
    }

    doNextWrite();
  }
Ejemplo n.º 3
0
  // TODO check if non-V types can ever be given as newValue
  private final void fromObject(PVField field, Object newValue) {
    // enum support
    if (isChannelEnumType) {
      // value.index int field expected
      PVInt indexPutField = (PVInt) channelPutValueField;

      int index = -1;
      if (newValue instanceof Number) {
        index = ((Number) newValue).intValue();
      } else if (newValue instanceof String) {
        String nv = (String) newValue;

        PVStructure lastValue = getLastMessagePayload();
        if (lastValue == null)
          throw new IllegalArgumentException(
              "no monitor on '" + getChannelName() + "' created to get list of valid enum choices");

        PVStringArray pvChoices = (PVStringArray) lastValue.getSubField("value.choices");
        StringArrayData data = new StringArrayData();
        pvChoices.get(0, pvChoices.getLength(), data);
        final String[] choices = data.data;

        for (int i = 0; i < choices.length; i++) {
          if (nv.equals(choices[i])) {
            index = i;
            break;
          }
        }

        if (index == -1)
          throw new IllegalArgumentException("enumeration '" + nv + "' is not a valid choice");
      }

      indexPutField.put(index);

      return;
    }

    if (channelPutValueField instanceof PVScalar) {
      if (newValue instanceof Double)
        convert.fromDouble((PVScalar) field, ((Double) newValue).doubleValue());
      else if (newValue instanceof Integer)
        convert.fromInt((PVScalar) field, ((Integer) newValue).intValue());
      else if (newValue instanceof String) convert.fromString((PVScalar) field, (String) newValue);
      else if (newValue instanceof Byte)
        convert.fromByte((PVScalar) field, ((Byte) newValue).byteValue());
      else if (newValue instanceof Short)
        convert.fromShort((PVScalar) field, ((Short) newValue).shortValue());
      else if (newValue instanceof Long)
        convert.fromLong((PVScalar) field, ((Long) newValue).longValue());
      else if (newValue instanceof Float)
        convert.fromFloat((PVScalar) field, ((Float) newValue).floatValue());
      else
        throw new RuntimeException(
            "Unsupported write, cannot put '"
                + newValue.getClass()
                + "' into scalar '"
                + channelPutValueField.getField()
                + "'");
    } else if (channelPutValueField instanceof PVScalarArray) {
      // if it's a ListNumber, extract the array
      if (newValue instanceof ListNumber) {
        ListNumber data = (ListNumber) newValue;
        Object wrappedArray = CollectionNumbers.wrappedArray(data);
        if (wrappedArray == null) {
          newValue = CollectionNumbers.doubleArrayCopyOf(data);
        } else {
          newValue = wrappedArray;
        }
      } else if (!newValue.getClass().isArray()) {
        // create an array
        Object newValueArray = Array.newInstance(newValue.getClass(), 1);
        Array.set(newValueArray, 0, newValue);
        newValue = newValueArray;
      }

      if (newValue instanceof double[])
        convert.fromDoubleArray(
            (PVScalarArray) field, 0, ((double[]) newValue).length, (double[]) newValue, 0);
      else if (newValue instanceof int[])
        convert.fromIntArray(
            (PVScalarArray) field, 0, ((int[]) newValue).length, (int[]) newValue, 0);
      else if (newValue instanceof String[])
        convert.fromStringArray(
            (PVScalarArray) field, 0, ((String[]) newValue).length, (String[]) newValue, 0);
      // special case from string to array
      else if (newValue instanceof String) {
        String str = ((String) newValue).trim();

        // remove []
        if (str.charAt(0) == '[' && str.charAt(str.length() - 1) == ']')
          str = str.substring(1, str.length() - 1);

        // split on commas and whitespaces
        String[] splitValues = str.split("[,\\s]+");
        convert.fromStringArray((PVScalarArray) field, 0, splitValues.length, splitValues, 0);
      } else if (newValue instanceof byte[])
        convert.fromByteArray(
            (PVScalarArray) field, 0, ((byte[]) newValue).length, (byte[]) newValue, 0);
      else if (newValue instanceof short[])
        convert.fromShortArray(
            (PVScalarArray) field, 0, ((short[]) newValue).length, (short[]) newValue, 0);
      else if (newValue instanceof long[])
        convert.fromLongArray(
            (PVScalarArray) field, 0, ((long[]) newValue).length, (long[]) newValue, 0);
      else if (newValue instanceof float[])
        convert.fromFloatArray(
            (PVScalarArray) field, 0, ((float[]) newValue).length, (float[]) newValue, 0);
      else
        throw new RuntimeException(
            "Unsupported write, cannot put '"
                + newValue.getClass()
                + "' into array'"
                + channelPutValueField.getField()
                + "'");
    } else
      throw new RuntimeException(
          "Unsupported write, cannot put '"
              + newValue.getClass()
              + "' into '"
              + channelPutValueField.getField()
              + "'");
  }