Examples with DataStreamTableSink org.apache.flink.table.planner.sinks.DataStreamTableSink used on opensource projects

Example 1 with DataStreamTableSink

use of org.apache.flink.table.planner.sinks.DataStreamTableSink in project flink by apache.

the class CommonExecLegacySink method translateToPlanInternal.

@SuppressWarnings("unchecked")
@Override
protected Transformation<T> translateToPlanInternal(PlannerBase planner, ExecNodeConfig config) {
    if (tableSink instanceof StreamTableSink) {
        final Transformation<T> transform;
        if (tableSink instanceof RetractStreamTableSink) {
            transform = translateToTransformation(planner, config, true);
        } else if (tableSink instanceof UpsertStreamTableSink) {
            UpsertStreamTableSink<T> upsertSink = (UpsertStreamTableSink<T>) tableSink;
            final boolean isAppendOnlyTable = !needRetraction;
            upsertSink.setIsAppendOnly(isAppendOnlyTable);
            if (upsertKeys != null) {
                upsertSink.setKeyFields(upsertKeys);
            } else {
                if (isAppendOnlyTable) {
                    upsertSink.setKeyFields(null);
                } else {
                    throw new TableException("UpsertStreamTableSink requires that Table has a full primary keys if it is updated.");
                }
            }
            transform = translateToTransformation(planner, config, true);
        } else if (tableSink instanceof AppendStreamTableSink) {
            // verify table is an insert-only (append-only) table
            if (needRetraction) {
                throw new TableException("AppendStreamTableSink requires that Table has only insert changes.");
            }
            transform = translateToTransformation(planner, config, false);
        } else {
            if (isStreaming) {
                throw new TableException("Stream Tables can only be emitted by AppendStreamTableSink, " + "RetractStreamTableSink, or UpsertStreamTableSink.");
            } else {
                transform = translateToTransformation(planner, config, false);
            }
        }
        final DataStream<T> dataStream = new DataStream<T>(planner.getExecEnv(), transform);
        final DataStreamSink<T> dsSink = (DataStreamSink<T>) ((StreamTableSink<T>) tableSink).consumeDataStream(dataStream);
        if (dsSink == null) {
            throw new TableException(String.format("The StreamTableSink#consumeDataStream(DataStream) must be implemented " + "and return the sink transformation DataStreamSink. " + "However, %s doesn't implement this method.", tableSink.getClass().getCanonicalName()));
        }
        return dsSink.getLegacyTransformation();
    } else if (tableSink instanceof DataStreamTableSink) {
        // is no real table sink, so we just need translate its input to Transformation.
        return translateToTransformation(planner, config, ((DataStreamTableSink<T>) tableSink).withChangeFlag());
    } else {
        throw new TableException(String.format("Only Support StreamTableSink! However %s is not a StreamTableSink.", tableSink.getClass().getCanonicalName()));
    }
}