Netezza Java UDTF自定义函数

您好，我是Netezza的新手，我被要求开发自定义Java函数并交付API

我的问题是，我是否能够根据给定的要求生成解决方案。这是要求

我得到一张桌子，让我们把它命名为Table1。我必须按每行读取表并计算不同的值，当我的值有意义时，我必须将其插入到不同的表中

我只需要读取多行，计算多个值，当数据有意义时，我就可以输出它

---

所以我的问题是，在Netezza自定义Java UDTF函数中，是否可以读取多行并输出很少的数据？

是的，可以读取n行并输出数据 没有人帮我这么做，我继续构建函数，它工作得很好

三年后，我被要求分享解决方案。我现在记不起要求了，我也离开公司很久了。所以我正在粘贴我编程的600行代码，当时我很天真，可能有更好的方法。如果你能理解它，你会很幸运的

import java.sql.Timestamp;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import org.netezza.ae.Nzae;
import org.netezza.ae.NzaeApi;
import org.netezza.ae.NzaeApiGenerator;
import org.netezza.ae.NzaeDataTypes;
import org.netezza.ae.NzaeException;
import org.netezza.ae.NzaeMetadata;
import org.netezza.ae.NzaeRecord;
import org.netezza.ae.NzaeUtil;

public class viewResolver {
private static final Executor exec = Executors.newCachedThreadPool();

public static final void main(String[] args) {
    try {
        mainImpl(args);
    } catch (Throwable t) {
        System.err.println(t.toString());
        NzaeUtil.logException(t, "main");
    }

}

public static final void mainImpl(String[] args) {
    NzaeApiGenerator helper = new NzaeApiGenerator();
    while (true) {
        final NzaeApi api = helper.getApi(NzaeApi.FUNCTION);
        if (api.apiType == NzaeApi.FUNCTION) {
            if (!helper.isRemote()) {
                run(api.aeFunction);
                break;
            } else {
                Runnable task = new Runnable() {
                    public void run() {
                        try {
                            viewResolver.run(api.aeFunction);
                        } finally {
                            api.aeFunction.close();
                        }
                    }
                };
                exec.execute(task);
            }
        }
    }
    helper.close();
}

public static int run(Nzae ae) {
    try {
        int ret = runReal(ae);
        ae.done();
        return ret;
    } catch (NzaeException ex) {
        ex.printStackTrace();
        ae.userError(ex.getMessage());
        ae.done();
        throw ex;
    } catch (Throwable ex) {
        ex.printStackTrace();
        ae.userError(ex.toString());
        ae.done();
        throw new NzaeException(ex.toString());
    }
}

static String acc_id = null;
static String rec_id = null;
static String tuner = null;
static String channel = null;
static String show_name = null;
static String tmsId = null;
static String viewing_type = null;
static String event_type = null;
static String channelFamily = null;
static String ruid = null;
static int suid = 0;
static double timeStarted = 0;
static double timeEnded = 0;
static Timestamp datecreated = null;
static double content_start = 0;
static double content_end = 0;

static String prev_acc_id = null;
static String prev_rec_id = null;
static String prev_tuner = null;
static String prev_channel = null;
static String prev_show_name = null;
static String prev_tmsId = null;
static String prev_viewing_type = null;
static String prev_event_type = null;
static String prev_channelFamily = null;
static String prev_ruid = null;
static int prev_suid = 0;
static double prev_timeStarted = 0;
static double prev_timeEnded = 0;
static Timestamp prev_datecreated = null;
static double prev_content_start = 0;
static double prev_content_end = 0;

public static int runReal(Nzae ae) {

    double dvr_time_watched = 0;
    double vod_time_watched = 0;
    double manual_ffx = 0;
    double manual_ffr = 0;
    boolean end = false;
    double tune_duration = 0;
    boolean live_DVR_Flag = false;
    final NzaeMetadata meta = ae.getMetadata();
    NzaeRecord input = null;
    boolean firstRecord = true;

    validateInput(meta);
    while (!end) {
        NzaeRecord output = ae.createOutputRecord();
        if (true) {
            input = ae.next();

            if (input == null) {// checks if no more records
                end = true;
                // returns the final view
                if (prev_timeEnded - prev_timeStarted != 0) {// if final view is tune
                    tune_duration = prev_timeEnded - prev_timeStarted;
                    output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel, prev_show_name,
                            prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily, prev_ruid,
                            prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated, 0, 0, tune_duration,
                            manual_ffx, manual_ffr);
                    ae.outputResult(output);

                }
                if (vod_time_watched != 0 || dvr_time_watched != 0 || manual_ffr != 0 || manual_ffx != 0) {

                    if (!prev_event_type.equalsIgnoreCase("DVR_EOE") && dvr_time_watched != 0) {// if DVR
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, dvr_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    } else if (!prev_event_type.equalsIgnoreCase("DVR_EOE") && vod_time_watched != 0) {// if VOD
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, vod_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    }

                }
                continue;
            } else {// set variables
                if (input.getField(0) != null)
                    acc_id = input.getField(0).toString();
                else
                    acc_id = null;
                if (input.getField(1) != null)
                    rec_id = input.getField(1).toString();
                else
                    rec_id = null;
                if (input.getField(2) != null)
                    tuner = input.getField(2).toString();
                else
                    tuner = null;
                if (input.getField(3) != null)
                    channel = input.getField(3).toString();
                else
                    channel = null;
                if (input.getField(4) != null)
                    show_name = input.getField(4).toString();
                else
                    show_name = null;
                if (input.getField(5) != null)
                    tmsId = input.getField(5).toString();
                else
                    tmsId = null;
                if (input.getField(6) != null)
                    viewing_type = input.getField(6).toString();
                else
                    viewing_type = null;
                if (input.getField(7) != null)
                    event_type = input.getField(7).toString();
                else
                    event_type = null;
                if (input.getField(8) != null)
                    channelFamily = input.getField(8).toString();
                else
                    channelFamily = null;
                if (input.getField(9) != null)
                    ruid = input.getField(9).toString();
                else
                    ruid = null;
                if (input.getField(10) != null)
                    suid = input.getFieldAsNumber(10).intValue();
                else
                    suid = 0;
                if (input.getField(11) != null)
                    timeStarted = input.getFieldAsNumber(11).doubleValue();
                else
                    timeStarted = 0;
                if (input.getField(12) != null)
                    timeEnded = input.getFieldAsNumber(12).doubleValue();
                else
                    timeEnded = 0;
                if (input.getField(13) != null)
                    datecreated = input.getFieldAsTimestamp(13);
                else
                    datecreated = null;
                if (input.getField(14) != null)
                    content_start = input.getFieldAsNumber(14).doubleValue();
                else
                    content_start = 0;
                if (input.getField(15) != null)
                    content_end = input.getFieldAsNumber(15).doubleValue();
                else
                    content_end = 0;

            }
        }

        if (firstRecord) {

            prev_acc_id = acc_id;
            prev_rec_id = rec_id;
            prev_tuner = tuner;
            prev_channel = channel;
            prev_show_name = show_name;
            prev_tmsId = tmsId;
            prev_viewing_type = viewing_type;
            prev_event_type = event_type;
            prev_channelFamily = channelFamily;
            prev_ruid = ruid;
            prev_suid = suid;
            prev_timeStarted = timeStarted;
            prev_timeEnded = timeEnded;
            prev_datecreated = datecreated;
            prev_content_start = content_start;
            prev_content_end = content_end;

            firstRecord = false;
        }

        // ********* if acc id or rec id changes
        if (prev_acc_id != null && prev_rec_id != null && prev_acc_id != null && prev_rec_id != null) {
            if (!prev_acc_id.equalsIgnoreCase(acc_id) || !prev_rec_id.equalsIgnoreCase(rec_id)) {
                if (prev_timeEnded - prev_timeStarted != 0) {// if tune
                    tune_duration = prev_timeEnded - prev_timeStarted;
                    output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel, prev_show_name,
                            prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily, prev_ruid,
                            prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated, 0, 0, tune_duration,
                            manual_ffx, manual_ffr);
                    ae.outputResult(output);
                    prev_timeEnded = prev_timeStarted = 0;

                    setPreviousValues();
                    tune_duration = 0;
                    manual_ffr = 0;
                    manual_ffx = 0;

                }
                if (dvr_time_watched != 0 || manual_ffr != 0 || manual_ffx != 0) {

                    if (!prev_event_type.equalsIgnoreCase("DVR_EOE")) {// if DVR
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, dvr_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    }
                    dvr_time_watched = 0;
                    manual_ffr = 0;
                    manual_ffx = 0;
                    setPreviousValues();
                    live_DVR_Flag = false;

                }
                if (vod_time_watched != 0 || manual_ffr != 0 || manual_ffx != 0) {

                    if (!prev_event_type.equalsIgnoreCase("DVR_EOE")) {// if VOD
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, vod_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    }
                    vod_time_watched = 0;
                    manual_ffr = 0;
                    manual_ffx = 0;
                    setPreviousValues();
                    live_DVR_Flag = false;

                }

            }
        }

        // ******** special case tune to DVR
        if (viewing_type != null && prev_viewing_type != null)
            if ((live_DVR_Flag || prev_viewing_type.equalsIgnoreCase("Tune"))
                    && viewing_type.equalsIgnoreCase("DvrEvent")) {

                if (tmsId != null)
                    if (!prev_tmsId.equalsIgnoreCase(tmsId)) {
                        if (live_DVR_Flag) {
                            // should change the event name to "Live DVR"
                            if (!prev_event_type.equalsIgnoreCase("DVR_EOE")) {
                                output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                        prev_show_name, prev_tmsId, "LiveDVR", prev_event_type, prev_channelFamily,
                                        prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                        prev_content_start, prev_content_end, dvr_time_watched, manual_ffx,
                                        manual_ffr);
                                ae.outputResult(output);
                            }

                            dvr_time_watched = 0;
                            manual_ffr = 0;
                            manual_ffx = 0;
                            setPreviousValues();
                            live_DVR_Flag = false;

                        }
                    }
                if (tmsId != null)
                    if (prev_tmsId.equalsIgnoreCase(tmsId))
                        if (event_type != null && content_start != 0 && content_end != 0) {
                            live_DVR_Flag = true;
                            // ******* total play time
                            if (event_type.equalsIgnoreCase("DVR_PLAY") || event_type.equalsIgnoreCase("DVR_PAUSE")) {
                                dvr_time_watched += (content_end - content_start);
                            }
                            // ********* total ffx time
                            if (event_type.contains("FWD_START") && !event_type.contains("SKIP")) {
                                manual_ffx += (content_end - content_start);
                            }
                            // ********** total ffr time
                            if (event_type.contains("FWD_END") && !event_type.contains("SKIP")) {
                                manual_ffr += (content_end - content_start);
                            }
                        }

            }

        // ******** special case DVR to tune
        if (viewing_type != null && prev_viewing_type != null)
            if ((live_DVR_Flag || prev_viewing_type.equalsIgnoreCase("DvrEvent"))
                    && viewing_type.equalsIgnoreCase("Tune")) {

                if (tmsId != null)
                    if (!prev_tmsId.equalsIgnoreCase(tmsId)) {
                        if (live_DVR_Flag) {
                            tune_duration = prev_timeEnded - prev_timeStarted;
                            output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                    prev_show_name, prev_tmsId, "LiveDVR", prev_event_type, prev_channelFamily,
                                    prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated, 0, 0,
                                    tune_duration, manual_ffx, manual_ffr);
                            ae.outputResult(output);
                            prev_timeEnded = prev_timeStarted = 0;

                            setPreviousValues();
                            tune_duration = 0;
                            manual_ffr = 0;
                            manual_ffx = 0;
                            live_DVR_Flag = false;

                        }
                    }
                if (tmsId != null)
                    if (prev_tmsId.equalsIgnoreCase(tmsId))
                        if (timeEnded != 0)
                            prev_timeEnded = timeEnded;
            }

        // ***** For Tune events
        if (prev_viewing_type.equalsIgnoreCase("Tune")) {

            if (tmsId != null)
                if (!prev_tmsId.equalsIgnoreCase(tmsId)) {
                    if (prev_timeEnded != 0) {
                        tune_duration = prev_timeEnded - prev_timeStarted;
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated, 0, 0,
                                tune_duration, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                        prev_timeEnded = prev_timeStarted = 0;
                        setPreviousValues();
                        tune_duration = 0;
                        manual_ffr = 0;
                        manual_ffx = 0;

                    }
                }
            if (timeEnded != 0)
                prev_timeEnded = timeEnded;
        }
        // ************ for DVR events
        else if (prev_viewing_type.contains("DvrEvent")) {

            if (tmsId != null)
                if (!prev_tmsId.equalsIgnoreCase(tmsId)) {
                    if (!prev_event_type.equalsIgnoreCase("DVR_EOE")) {
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, dvr_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    }
                    dvr_time_watched = 0;
                    manual_ffr = 0;
                    manual_ffx = 0;
                    setPreviousValues();

                }
            if (event_type != null && content_start != 0 && content_end != 0) {
                // ******* total play time
                if (event_type.equalsIgnoreCase("DVR_PLAY") || event_type.equalsIgnoreCase("DVR_PAUSE")) {
                    dvr_time_watched += (content_end - content_start);
                    // play_end = row.getCONTENT_END_EPOCH();
                }
                // ********* total ffx time
                if (event_type.contains("FWD_START") && !event_type.contains("SKIP")) {
                    manual_ffx += (content_end - content_start);
                }
                // ********** total ffr time
                if (event_type.contains("FWD_END") && !event_type.contains("SKIP")) {
                    manual_ffr += (content_end - content_start);
                }
            }

        }
        // ************ for Vod events
        else if (prev_viewing_type.equalsIgnoreCase("VODEvent")) {

            if (ruid != null)
                if (!prev_ruid.equalsIgnoreCase(ruid)) {
                    if (!prev_event_type.equalsIgnoreCase("DVR_EOE")) {
                        output = setOutput(output, prev_acc_id, prev_rec_id, prev_tuner, prev_channel,
                                prev_show_name, prev_tmsId, prev_viewing_type, prev_event_type, prev_channelFamily,
                                prev_ruid, prev_suid, prev_timeStarted, prev_timeEnded, prev_datecreated,
                                prev_content_start, prev_content_end, vod_time_watched, manual_ffx, manual_ffr);
                        ae.outputResult(output);
                    }
                    vod_time_watched = 0;
                    manual_ffr = 0;
                    manual_ffx = 0;
                    setPreviousValues();

                }
            if (event_type != null && content_start != 0 && content_end != 0) {
                // ******* total play time
                if (event_type.equalsIgnoreCase("DVR_PLAY") || event_type.equalsIgnoreCase("DVR_PAUSE")) {
                    vod_time_watched += (content_end - content_start);
                    // play_end = row.getCONTENT_END_EPOCH();
                }
                // ********* total ffx time
                if (event_type.contains("FWD_START") && !event_type.contains("SKIP")) {
                    manual_ffx += (content_end - content_start);
                }
                // ********** total ffr time
                if (event_type.contains("FWD_END") && !event_type.contains("SKIP")) {
                    manual_ffr += (content_end - content_start);
                }
            }

        }

    }
    return 0;
}

/**
 * 
 */
private static void setPreviousValues() {

    prev_acc_id = acc_id;
    prev_rec_id = rec_id;
    prev_tuner = tuner;
    prev_channel = channel;
    prev_show_name = show_name;
    prev_tmsId = tmsId;
    prev_viewing_type = viewing_type;
    prev_event_type = event_type;
    prev_channelFamily = channelFamily;
    prev_ruid = ruid;
    prev_suid = suid;
    prev_timeStarted = timeStarted;
    prev_timeEnded = timeEnded;
    prev_datecreated = datecreated;
    prev_content_start = content_start;
    prev_content_end = content_end;
}

/**
 * @param output
 * @param accId
 * @param recId
 * @param string
 * @param channel
 * @param showName
 * @param tmsId
 * @param eventName
 * @param eventType
 * @param channelFamily
 * @param ruid
 * @param suid
 * @param timeStarted
 * @param timeEnded
 * @param fieldAsTimestamp2
 * @param contentStart
 * @param contentEnd
 * @param duration
 * @param manualFfx
 * @param manualFfr
 */
private static NzaeRecord setOutput(NzaeRecord output, String accId, String recId, String string, String channel,
        String showName, String tmsId, String eventName, String eventType, String channelFamily, String ruid,
        int suid, double timeStarted, double timeEnded, Timestamp fieldAsTimestamp2, double contentStart,
        double contentEnd, double duration, double manualFfx, double manualFfr) {
    output.setField(0, accId);
    output.setField(1, recId);
    output.setField(2, string);
    output.setField(3, channel);
    output.setField(4, showName);
    output.setField(5, tmsId);
    output.setField(6, eventName);
    output.setField(7, eventType);
    output.setField(8, channelFamily);
    output.setField(9, ruid);
    output.setField(10, suid == 0 ? null : suid);
    output.setField(11, timeStarted == 0 ? null : timeStarted);
    output.setField(12, timeEnded == 0 ? null : timeEnded);
    output.setField(13, fieldAsTimestamp2);
    output.setField(14, contentStart == 0 ? null : contentStart);
    output.setField(15, contentEnd == 0 ? null : contentEnd);
    output.setField(16, duration);
    output.setField(17, manualFfx);
    output.setField(18, manualFfr);
    return output;

}

/**
 * @param meta
 */
private static void validateInput(NzaeMetadata meta) {
    if (meta.getOutputColumnCount() != 19) {
        throw new NzaeException("expecting  19 output columns ");
    }
    if (meta.getInputColumnCount() != 16) {
        throw new NzaeException("expecting 16 input columns");
    }
    if (meta.getInputNzType(0) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(0) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("first input column (Account id hashed) expected to be a string type");
    }
    if (meta.getInputNzType(1) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(1) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("second input column (Receiver id hashed) expected to be a string type");
    }
    if (meta.getInputNzType(2) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(2) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("third input column (Tuner) expected to be a string type");
    }
    if (meta.getInputNzType(3) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(3) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("fourth input column (Channel) expected to be a string type");
    }
    if (meta.getInputNzType(4) != NzaeDataTypes.NZUDSUDX_NATIONAL_FIXED
            && meta.getInputNzType(4) != NzaeDataTypes.NZUDSUDX_NATIONAL_VARIABLE) {
        throw new NzaeException("fifth input column (Show name) expected to be a string type");
    }

    if (meta.getInputNzType(5) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(5) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("sixth input column (TMS_ID) expected to be a string type");
    }
    if (meta.getInputNzType(6) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(6) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("seventh input column (Event Name) expected to be a string type");
    }
    if (meta.getInputNzType(7) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(7) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("eighth input column (Event type) expected to be a string type");
    }
    if (meta.getInputNzType(8) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(8) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("nineth input column (CHANNEL_FAMILY) expected to be a string type");
    }
    if (meta.getInputNzType(9) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(9) != NzaeDataTypes.NZUDSUDX_VARIABLE) {
        throw new NzaeException("thenth input column (RUID) expected to be a string type");
    }
    if (meta.getInputNzType(10) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(10) != NzaeDataTypes.NZUDSUDX_INT32) {
        throw new NzaeException("eleventh input column (SUID) expected to be a integer type");
    }
    if (meta.getInputNzType(11) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(11) != NzaeDataTypes.NZUDSUDX_INT64) {
        throw new NzaeException("twelfth input column (Start Epoch) expected to be a Big Integer type");
    }
    if (meta.getInputNzType(12) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(12) != NzaeDataTypes.NZUDSUDX_INT64) {
        throw new NzaeException("thirteenth  input column (End Epoch) expected to be a Big Integer type");
    }
    if (meta.getInputNzType(13) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(13) != NzaeDataTypes.NZUDSUDX_TIMESTAMP) {
        throw new NzaeException("fourteenth input column (Date created) expected to be a timestamp type");
    }
    if (meta.getInputNzType(14) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(14) != NzaeDataTypes.NZUDSUDX_INT64) {
        throw new NzaeException("fifteenth input column (Content start date) expected to be a Big Integer type");
    }
    if (meta.getInputNzType(15) != NzaeDataTypes.NZUDSUDX_FIXED
            && meta.getInputNzType(15) != NzaeDataTypes.NZUDSUDX_INT64) {
        throw new NzaeException("sixteenth input column (Content end date) expected to be a big Integer type");
    }
}

---

}

请分享实际的answer@DavidJ这已经超过3年了，但我会尽力回忆一下这个要求，也许它会帮助你理解我的代码，帮助你的事业。这是关于计算网络电视的浏览量。当某些人一旦更改频道或使用skip、FF或RW或按需打开或关闭录制的鞋子时，每个事件都会发送回有线电视提供商。提供商使用这些信息来计算人们观看频道的方式、观看的广告、跳过的内容以及观看的时间。一旦计算出来，他们就会将这些信息卖给广告销售人员以获取利润，还可以用来查找任何节目的收视率。大部分代码都是用来查找要插入数据库的内容。我从表的顶部开始，一次处理一行，只有在节目结束或用户关闭电源时才将其插入数据库。还有其他一些情况，比如如果用户FFX他转发的比特不算是一个视图。记住一个节目不是一个视图一个节目可能有多个视图，开始10分钟然后暂停——一个视图，恢复3秒FFX-1视图，恢复->5分钟->广告->1分钟->跳过--1视图恢复--finish show--1视图--next show等等。如果你可以忽略所有的逻辑和混乱，也许你会找到你需要的。希望能有帮助