mServer.crawler.sender.newsearch.ZDFVideoDTODeserializer Maven / Gradle / Ivy
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package mServer.crawler.sender.newsearch;
import java.lang.reflect.Type;
import java.text.ParseException;
import org.apache.commons.lang3.time.FastDateFormat;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import de.mediathekview.mlib.tool.Log;
import mServer.tool.MserverDaten;
/**
* A JSON deserializer to gather the needed information for a {@link VideoDTO}.
*/
public class ZDFVideoDTODeserializer implements JsonDeserializer
{
private static final String JSON_ELEMENT_BEGIN = "airtimeBegin";
private static final String JSON_ELEMENT_BRAND = "http://zdf.de/rels/brand";
private static final String JSON_ELEMENT_CATEGORY = "http://zdf.de/rels/category";
private static final String JSON_ELEMENT_BROADCAST = "http://zdf.de/rels/cmdm/broadcasts";
private static final String JSON_ELEMENT_DURATION = "duration";
private static final String JSON_ELEMENT_EDITORIALDATE = "editorialDate";
private static final String JSON_ELEMENT_LEADPARAGRAPH = "leadParagraph";
private static final String JSON_ELEMENT_MAINVIDEO = "mainVideoContent";
private static final String JSON_ELEMENT_PROGRAMMITEM = "programmeItem";
private static final String JSON_ELEMENT_SHARING_URL = "http://zdf.de/rels/sharing-url";
private static final String JSON_ELEMENT_SUBTITLE = "subtitle";
private static final String JSON_ELEMENT_TARGET = "http://zdf.de/rels/target";
private static final String JSON_ELEMENT_TITLE = "title";
private static final String JSON_ELEMENT_TEASERTEXT = "teasertext";
private final FastDateFormat sdfEditorialDate = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");//2016-10-29T16:15:00.000+02:00
private final FastDateFormat sdfAirtimeBegin = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ssXXX");//2016-10-29T16:15:00+02:00
private final FastDateFormat sdfOutTime = FastDateFormat.getInstance("HH:mm:ss");
private final FastDateFormat sdfOutDay = FastDateFormat.getInstance("dd.MM.yyyy");
@Override
public VideoDTO deserialize(final JsonElement aJsonElement, final Type aTypeOfT, final JsonDeserializationContext aJsonDeserializationContext) throws JsonParseException
{
VideoDTO dto = null;
try
{
dto = new VideoDTO();
JsonObject rootNode = aJsonElement.getAsJsonObject();
JsonObject programmItemTarget = null;
if (rootNode.has(JSON_ELEMENT_PROGRAMMITEM) && !rootNode.get(JSON_ELEMENT_PROGRAMMITEM).isJsonNull())
{
JsonArray programmItem = rootNode.getAsJsonArray(JSON_ELEMENT_PROGRAMMITEM);
programmItemTarget = programmItem.get(0).getAsJsonObject().get(JSON_ELEMENT_TARGET).getAsJsonObject();
}
parseTitle(dto, rootNode, programmItemTarget);
parseTopic(dto, rootNode);
parseDescription(dto, rootNode);
parseWebsiteUrl(dto, rootNode);
parseAirtime(dto, rootNode, programmItemTarget);
parseDuration(dto, rootNode);
} catch (UnsupportedOperationException ex)
{
if (MserverDaten.debug)
Log.errorLog(496583256, ex);
} catch (Exception ex)
{
dto = null;
Log.errorLog(496583256, ex);
}
return dto;
}
private void parseAirtime(VideoDTO dto, JsonObject rootNode, JsonObject programmItemTarget)
{
String date;
FastDateFormat sdf;
// use broadcast airtime if found
if (programmItemTarget != null)
{
JsonArray broadcastArray = programmItemTarget.getAsJsonArray(JSON_ELEMENT_BROADCAST);
if (broadcastArray == null || broadcastArray.size() < 1)
{
date = getEditorialDate(rootNode);
sdf = sdfEditorialDate;
} else
{
// array is ordered ascending though the oldest broadcast is the first entry
date = broadcastArray.get(0).getAsJsonObject().get(JSON_ELEMENT_BEGIN).getAsString();
sdf = sdfAirtimeBegin;
}
} else
{
// use editorialdate
date = getEditorialDate(rootNode);
sdf = sdfEditorialDate;
}
if (!date.isEmpty())
{
dto.setDate(convertDate(date, sdf));
dto.setTime(convertTime(date, sdf));
}
}
private String getEditorialDate(JsonObject rootNode)
{
return rootNode.get(JSON_ELEMENT_EDITORIALDATE).getAsString();
}
private void parseWebsiteUrl(VideoDTO dto, JsonObject rootNode)
{
String websiteUrl = rootNode.get(JSON_ELEMENT_SHARING_URL).getAsString();
dto.setWebsiteUrl(websiteUrl);
}
private void parseDuration(VideoDTO dto, JsonObject rootNode)
{
JsonElement mainVideoElement = rootNode.get(JSON_ELEMENT_MAINVIDEO);
if (mainVideoElement != null)
{
JsonObject mainVideo = mainVideoElement.getAsJsonObject();
JsonObject targetMainVideo = mainVideo.get(JSON_ELEMENT_TARGET).getAsJsonObject();
JsonElement duration = targetMainVideo.get(JSON_ELEMENT_DURATION);
if (duration != null)
{
dto.setDuration(duration.getAsInt());
}
}
}
private void parseDescription(VideoDTO dto, JsonObject rootNode)
{
JsonElement leadParagraph = rootNode.get(JSON_ELEMENT_LEADPARAGRAPH);
if (leadParagraph != null)
{
dto.setDescription(leadParagraph.getAsString());
} else
{
JsonElement teaserText = rootNode.get(JSON_ELEMENT_TEASERTEXT);
if (teaserText != null)
{
dto.setDescription(teaserText.getAsString());
}
}
}
private void parseTitle(VideoDTO dto, JsonObject rootNode, JsonObject target)
{
// use property "title" if found
JsonElement titleElement = rootNode.get(JSON_ELEMENT_TITLE);
if (titleElement != null)
{
JsonElement subTitleElement = rootNode.get(JSON_ELEMENT_SUBTITLE);
if (subTitleElement != null)
{
dto.setTitle(titleElement.getAsString() + " - " + subTitleElement.getAsString());
} else
{
dto.setTitle(titleElement.getAsString());
}
} else
{
// programmItem target required to determine title
String title = target.get(JSON_ELEMENT_TITLE).getAsString();
String subTitle = target.get(JSON_ELEMENT_SUBTITLE).getAsString();
if (subTitle.isEmpty())
{
dto.setTitle(title);
} else
{
dto.setTitle(title + " - " + subTitle);
}
}
}
private void parseTopic(VideoDTO dto, JsonObject rootNode)
{
JsonObject brand = rootNode.getAsJsonObject(JSON_ELEMENT_BRAND);
JsonObject category = rootNode.getAsJsonObject(JSON_ELEMENT_CATEGORY);
if (brand != null)
{
// first use brand
JsonElement topic = brand.get(JSON_ELEMENT_TITLE);
if (topic != null)
{
dto.setTopic(topic.getAsString());
return;
}
}
if (category != null)
{
// second use category
JsonElement topic = category.get(JSON_ELEMENT_TITLE);
if (topic != null)
{
dto.setTopic(topic.getAsString());
return;
}
}
// if no topic found, set topic to title
dto.setTopic(dto.getTitle());
}
private String convertDate(String dateValue, FastDateFormat sdf)
{
try
{
return sdfOutDay.format(sdf.parse(dateValue));
} catch (ParseException ex)
{
throw new RuntimeException("Date parse exception: " + dateValue);
}
}
private String convertTime(String dateValue, FastDateFormat sdf)
{
try
{
return sdfOutTime.format(sdf.parse(dateValue));
} catch (ParseException ex)
{
throw new RuntimeException("Date parse exception: " + dateValue);
}
}
}
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