private void buildExplanation(XContentBuilder builder, Explanation explanation)
throws IOException {
builder.startObject();
builder.field(Fields.VALUE, explanation.getValue());
builder.field(Fields.DESCRIPTION, explanation.getDescription());
Explanation[] innerExps = explanation.getDetails();
if (innerExps != null) {
builder.startArray(Fields.DETAILS);
for (Explanation exp : innerExps) {
buildExplanation(builder, exp);
}
builder.endArray();
}
builder.endObject();
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
List<SearchHitField> metaFields = Lists.newArrayList();
List<SearchHitField> otherFields = Lists.newArrayList();
if (fields != null && !fields.isEmpty()) {
for (SearchHitField field : fields.values()) {
if (field.values().isEmpty()) {
continue;
}
if (field.isMetadataField()) {
metaFields.add(field);
} else {
otherFields.add(field);
}
}
}
builder.startObject();
// For inner_hit hits shard is null and that is ok, because the parent search hit has all this
// information.
// Even if this was included in the inner_hit hits this would be the same, so better leave it
// out.
if (explanation() != null && shard != null) {
builder.field("_shard", shard.shardId());
builder.field("_node", shard.nodeIdText());
}
if (shard != null) {
builder.field(Fields._INDEX, shard.indexText());
}
builder.field(Fields._TYPE, type);
builder.field(Fields._ID, id);
if (nestedIdentity != null) {
nestedIdentity.toXContent(builder, params);
}
if (version != -1) {
builder.field(Fields._VERSION, version);
}
if (Float.isNaN(score)) {
builder.nullField(Fields._SCORE);
} else {
builder.field(Fields._SCORE, score);
}
for (SearchHitField field : metaFields) {
builder.field(field.name(), field.value());
}
if (source != null) {
XContentHelper.writeRawField("_source", source, builder, params);
}
if (!otherFields.isEmpty()) {
builder.startObject(Fields.FIELDS);
for (SearchHitField field : otherFields) {
builder.startArray(field.name());
for (Object value : field.getValues()) {
builder.value(value);
}
builder.endArray();
}
builder.endObject();
}
if (highlightFields != null && !highlightFields.isEmpty()) {
builder.startObject(Fields.HIGHLIGHT);
for (HighlightField field : highlightFields.values()) {
builder.field(field.name());
if (field.fragments() == null) {
builder.nullValue();
} else {
builder.startArray();
for (Text fragment : field.fragments()) {
builder.value(fragment);
}
builder.endArray();
}
}
builder.endObject();
}
if (sortValues != null && sortValues.length > 0) {
builder.startArray(Fields.SORT);
for (Object sortValue : sortValues) {
if (sortValue != null && sortValue.equals(MAX_TERM_AS_TEXT)) {
// We don't display MAX_TERM in JSON responses in case some clients have UTF-8 parsers
// that wouldn't accept a
// non-character in the response, even though this is valid UTF-8
builder.nullValue();
} else {
builder.value(sortValue);
}
}
builder.endArray();
}
if (matchedQueries.length > 0) {
builder.startArray(Fields.MATCHED_QUERIES);
for (String matchedFilter : matchedQueries) {
builder.value(matchedFilter);
}
builder.endArray();
}
if (explanation() != null) {
builder.field(Fields._EXPLANATION);
buildExplanation(builder, explanation());
}
if (innerHits != null) {
builder.startObject(Fields.INNER_HITS);
for (Map.Entry<String, InternalSearchHits> entry : innerHits.entrySet()) {
builder.startObject(entry.getKey());
entry.getValue().toXContent(builder, params);
builder.endObject();
}
builder.endObject();
}
builder.endObject();
return builder;
}
