/**
* @param s the JSON representation of the filter
* @return the filter
* @throws Exception
*/
public static Filter buildFilter(String s) throws Exception {
JSONJAXBContext context =
new JSONJAXBContext(JSONConfiguration.natural().build(), FilterModel.class);
JSONUnmarshaller unmarshaller = context.createJSONUnmarshaller();
FilterModel model = unmarshaller.unmarshalFromJSON(new StringReader(s), FilterModel.class);
return model.build();
}
public Filter build() {
Filter filter;
switch (FilterType.valueOf(type)) {
case ColumnCountGetFilter:
filter = new ColumnCountGetFilter(limit);
break;
case ColumnPaginationFilter:
filter = new ColumnPaginationFilter(limit, offset);
break;
case ColumnPrefixFilter:
filter = new ColumnPrefixFilter(Base64.decode(value));
break;
case ColumnRangeFilter:
filter =
new ColumnRangeFilter(
Base64.decode(minColumn),
minColumnInclusive,
Base64.decode(maxColumn),
maxColumnInclusive);
break;
case DependentColumnFilter:
filter =
new DependentColumnFilter(
Base64.decode(family),
qualifier != null ? Base64.decode(qualifier) : null,
dropDependentColumn,
CompareOp.valueOf(op),
comparator.build());
break;
case FamilyFilter:
filter = new FamilyFilter(CompareOp.valueOf(op), comparator.build());
break;
case FilterList:
{
List<Filter> list = new ArrayList<Filter>();
for (FilterModel model : filters) {
list.add(model.build());
}
filter = new FilterList(FilterList.Operator.valueOf(op), list);
}
break;
case FirstKeyOnlyFilter:
filter = new FirstKeyOnlyFilter();
break;
case InclusiveStopFilter:
filter = new InclusiveStopFilter(Base64.decode(value));
break;
case KeyOnlyFilter:
filter = new KeyOnlyFilter();
break;
case MultipleColumnPrefixFilter:
{
byte[][] values = new byte[prefixes.size()][];
for (int i = 0; i < prefixes.size(); i++) {
values[i] = Base64.decode(prefixes.get(i));
}
filter = new MultipleColumnPrefixFilter(values);
}
break;
case PageFilter:
filter = new PageFilter(Long.valueOf(value));
break;
case PrefixFilter:
filter = new PrefixFilter(Base64.decode(value));
break;
case QualifierFilter:
filter = new QualifierFilter(CompareOp.valueOf(op), comparator.build());
break;
case RandomRowFilter:
filter = new RandomRowFilter(chance);
break;
case RowFilter:
filter = new RowFilter(CompareOp.valueOf(op), comparator.build());
break;
case SingleColumnValueFilter:
filter =
new SingleColumnValueFilter(
Base64.decode(family),
qualifier != null ? Base64.decode(qualifier) : null,
CompareOp.valueOf(op),
comparator.build());
if (ifMissing != null) {
((SingleColumnValueFilter) filter).setFilterIfMissing(ifMissing);
}
if (latestVersion != null) {
((SingleColumnValueFilter) filter).setLatestVersionOnly(latestVersion);
}
break;
case SingleColumnValueExcludeFilter:
filter =
new SingleColumnValueExcludeFilter(
Base64.decode(family),
qualifier != null ? Base64.decode(qualifier) : null,
CompareOp.valueOf(op),
comparator.build());
if (ifMissing != null) {
((SingleColumnValueExcludeFilter) filter).setFilterIfMissing(ifMissing);
}
if (latestVersion != null) {
((SingleColumnValueExcludeFilter) filter).setLatestVersionOnly(latestVersion);
}
break;
case SkipFilter:
filter = new SkipFilter(filters.get(0).build());
break;
case TimestampsFilter:
filter = new TimestampsFilter(timestamps);
break;
case ValueFilter:
filter = new ValueFilter(CompareOp.valueOf(op), comparator.build());
break;
case WhileMatchFilter:
filter = new WhileMatchFilter(filters.get(0).build());
break;
default:
throw new RuntimeException("unhandled filter type: " + type);
}
return filter;
}