Examples with StrDocValues org.apache.lucene.queries.function.docvalues.StrDocValues used on opensource projects

Example 1 with StrDocValues

use of org.apache.lucene.queries.function.docvalues.StrDocValues in project lucene-solr by apache.

the class MultiStringFunction method getValues.

@Override
public FunctionValues getValues(Map context, LeafReaderContext readerContext) throws IOException {
    final FunctionValues[] valsArr = new FunctionValues[sources.length];
    for (int i = 0; i < sources.length; i++) {
        valsArr[i] = sources[i].getValues(context, readerContext);
    }
    return new StrDocValues(this) {

        @Override
        public String strVal(int doc) throws IOException {
            CharSequence cs = func(doc, valsArr);
            return cs != null ? cs.toString() : null;
        }

        @Override
        public boolean exists(int doc) throws IOException {
            boolean exists = true;
            for (FunctionValues val : valsArr) {
                exists = exists & val.exists(doc);
            }
            return exists;
        }

        @Override
        public boolean bytesVal(int doc, BytesRefBuilder bytes) throws IOException {
            bytes.clear();
            CharSequence cs = func(doc, valsArr);
            if (cs != null) {
                bytes.copyChars(func(doc, valsArr));
                return true;
            } else {
                return false;
            }
        }

        @Override
        public String toString(int doc) throws IOException {
            StringBuilder sb = new StringBuilder();
            sb.append(name()).append('(');
            boolean firstTime = true;
            for (FunctionValues vals : valsArr) {
                if (firstTime) {
                    firstTime = false;
                } else {
                    sb.append(',');
                }
                sb.append(vals.toString(doc));
            }
            sb.append(')');
            return sb.toString();
        }

        @Override
        public ValueFiller getValueFiller() {
            return new ValueFiller() {

                private final MutableValueStr mval = new MutableValueStr();

                @Override
                public MutableValue getValue() {
                    return mval;
                }

                @Override
                public void fillValue(int doc) throws IOException {
                    mval.exists = bytesVal(doc, mval.value);
                }
            };
        }
    };
}