Examples with NullFieldValue io.openems.common.types.NullFieldValue used on opensource projects

Example 1 with NullFieldValue

use of io.openems.common.types.NullFieldValue in project openems by OpenEMS.

the class FeneconPersistence method addChannelValueToQueue.

/**
 * Add a channel value to the send queue
 *
 * @param channel
 * @param valueOpt
 */
private void addChannelValueToQueue(Channel channel, Optional<?> valueOpt) {
    // Ignore anything that is not a ReadChannel
    if (!(channel instanceof ReadChannel<?>)) {
        return;
    }
    ReadChannel<?> readChannel = (ReadChannel<?>) channel;
    // Ignore channels that shall not be persisted
    if (readChannel.isDoNotPersist()) {
        return;
    }
    // Read and format value from channel
    FieldValue<?> fieldValue;
    if (!valueOpt.isPresent()) {
        fieldValue = new NullFieldValue();
    } else {
        Object value = valueOpt.get();
        if (value instanceof Number) {
            fieldValue = new NumberFieldValue((Number) value);
        } else if (value instanceof String) {
            fieldValue = new StringFieldValue((String) value);
        } else if (value instanceof Inet4Address) {
            fieldValue = new StringFieldValue(((Inet4Address) value).getHostAddress());
        } else if (value instanceof Boolean) {
            fieldValue = new NumberFieldValue(((Boolean) value) ? 1 : 0);
        } else if (value instanceof ChannelEnum) {
            fieldValue = new NumberFieldValue(((ChannelEnum) value).getValue());
        } else if (value instanceof DeviceNature || value instanceof JsonElement || value instanceof Map || value instanceof Set || value instanceof List || value instanceof ThingMap) {
            // ignore
            return;
        } else {
            log.warn("FENECON Persistence for value type [" + value.getClass().getName() + "] of channel [" + channel.address() + "] is not implemented.");
            return;
        }
    }
    // Add timestamp + value to queue
    synchronized (queue) {
        queue.put(readChannel.address(), fieldValue);
    }
}