// 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();
}
}
/* (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();
}
