// 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();
}
// 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()
+ "'");
}