private AbstractDistanceScoreFunction parseDateVariable(
XContentParser parser,
QueryShardContext context,
DateFieldMapper.DateFieldType dateFieldType,
MultiValueMode mode)
throws IOException {
XContentParser.Token token;
String parameterName = null;
String scaleString = null;
String originString = null;
String offsetString = "0d";
double decay = 0.5;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
parameterName = parser.currentName();
} else if (DecayFunctionBuilder.SCALE.equals(parameterName)) {
scaleString = parser.text();
} else if (DecayFunctionBuilder.ORIGIN.equals(parameterName)) {
originString = parser.text();
} else if (DecayFunctionBuilder.DECAY.equals(parameterName)) {
decay = parser.doubleValue();
} else if (DecayFunctionBuilder.OFFSET.equals(parameterName)) {
offsetString = parser.text();
} else {
throw new ElasticsearchParseException("parameter [{}] not supported!", parameterName);
}
}
long origin;
if (originString == null) {
origin = context.nowInMillis();
} else {
origin = dateFieldType.parseToMilliseconds(originString, false, null, null);
}
if (scaleString == null) {
throw new ElasticsearchParseException(
"[{}] must be set for date fields.", DecayFunctionBuilder.SCALE);
}
TimeValue val =
TimeValue.parseTimeValue(
scaleString,
TimeValue.timeValueHours(24),
DecayFunctionParser.class.getSimpleName() + ".scale");
double scale = val.getMillis();
val =
TimeValue.parseTimeValue(
offsetString,
TimeValue.timeValueHours(24),
DecayFunctionParser.class.getSimpleName() + ".offset");
double offset = val.getMillis();
IndexNumericFieldData numericFieldData = context.getForField(dateFieldType);
return new NumericFieldDataScoreFunction(
origin, scale, decay, offset, getDecayFunction(), numericFieldData, mode);
}
private AbstractDistanceScoreFunction parseNumberVariable(
XContentParser parser,
QueryShardContext context,
NumberFieldMapper.NumberFieldType fieldType,
MultiValueMode mode)
throws IOException {
XContentParser.Token token;
String parameterName = null;
double scale = 0;
double origin = 0;
double decay = 0.5;
double offset = 0.0d;
boolean scaleFound = false;
boolean refFound = false;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
parameterName = parser.currentName();
} else if (DecayFunctionBuilder.SCALE.equals(parameterName)) {
scale = parser.doubleValue();
scaleFound = true;
} else if (DecayFunctionBuilder.DECAY.equals(parameterName)) {
decay = parser.doubleValue();
} else if (DecayFunctionBuilder.ORIGIN.equals(parameterName)) {
origin = parser.doubleValue();
refFound = true;
} else if (DecayFunctionBuilder.OFFSET.equals(parameterName)) {
offset = parser.doubleValue();
} else {
throw new ElasticsearchParseException("parameter [{}] not supported!", parameterName);
}
}
if (!scaleFound || !refFound) {
throw new ElasticsearchParseException(
"both [{}] and [{}] must be set for numeric fields.",
DecayFunctionBuilder.SCALE,
DecayFunctionBuilder.ORIGIN);
}
IndexNumericFieldData numericFieldData = context.getForField(fieldType);
return new NumericFieldDataScoreFunction(
origin, scale, decay, offset, getDecayFunction(), numericFieldData, mode);
}
private AbstractDistanceScoreFunction parseGeoVariable(
XContentParser parser,
QueryShardContext context,
BaseGeoPointFieldMapper.GeoPointFieldType fieldType,
MultiValueMode mode)
throws IOException {
XContentParser.Token token;
String parameterName = null;
GeoPoint origin = new GeoPoint();
String scaleString = null;
String offsetString = "0km";
double decay = 0.5;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
parameterName = parser.currentName();
} else if (DecayFunctionBuilder.SCALE.equals(parameterName)) {
scaleString = parser.text();
} else if (DecayFunctionBuilder.ORIGIN.equals(parameterName)) {
origin = GeoUtils.parseGeoPoint(parser);
} else if (DecayFunctionBuilder.DECAY.equals(parameterName)) {
decay = parser.doubleValue();
} else if (DecayFunctionBuilder.OFFSET.equals(parameterName)) {
offsetString = parser.text();
} else {
throw new ElasticsearchParseException("parameter [{}] not supported!", parameterName);
}
}
if (origin == null || scaleString == null) {
throw new ElasticsearchParseException(
"[{}] and [{}] must be set for geo fields.",
DecayFunctionBuilder.ORIGIN,
DecayFunctionBuilder.SCALE);
}
double scale = DistanceUnit.DEFAULT.parse(scaleString, DistanceUnit.DEFAULT);
double offset = DistanceUnit.DEFAULT.parse(offsetString, DistanceUnit.DEFAULT);
IndexGeoPointFieldData indexFieldData = context.getForField(fieldType);
return new GeoFieldDataScoreFunction(
origin, scale, decay, offset, getDecayFunction(), indexFieldData, mode);
}