Example usage for org.apache.lucene.util ArrayUtil swap

Introduction

In this page you can find the example usage for org.apache.lucene.util ArrayUtil swap.

Prototype

public static <T> void swap(T[] arr, int i, int j) 

Source Link

Document

Swap values stored in slots i and j

Usage

From source file:org.codelibs.elasticsearch.index.fielddata.SortingBinaryDocValues.java

License:Apache License

protected SortingBinaryDocValues() {
    values = new BytesRefBuilder[] { new BytesRefBuilder() };
    sorter = new InPlaceMergeSorter() {

        @Override//  w w w  .  ja v a 2s.c o m
        protected void swap(int i, int j) {
            ArrayUtil.swap(values, i, j);
        }

        @Override
        protected int compare(int i, int j) {
            return values[i].get().compareTo(values[j].get());
        }
    };
}

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From source file:org.elasticsearch.index.fielddata.plain.AbstractAtomicParentChildFieldData.java

License:Apache License

@Override
public final SortedBinaryDocValues getBytesValues() {
    return new SortedBinaryDocValues() {

        private final BytesRef[] terms = new BytesRef[2];
        private int count;

        @Override/*from  w  w w  . ja v  a 2  s  . c  o  m*/
        public void setDocument(int docId) {
            count = 0;
            for (String type : types()) {
                final SortedDocValues values = getOrdinalsValues(type);
                final int ord = values.getOrd(docId);
                if (ord >= 0) {
                    terms[count++] = values.lookupOrd(ord);
                }
            }
            assert count <= 2 : "A single doc can potentially be both parent and child, so the maximum allowed values is 2";
            if (count > 1) {
                int cmp = terms[0].compareTo(terms[1]);
                if (cmp > 0) {
                    ArrayUtil.swap(terms, 0, 1);
                } else if (cmp == 0) {
                    // If the id is the same between types the only omit one. For example: a doc has parent#1 in _uid field and has grand_parent#1 in _parent field.
                    count = 1;
                }
            }
        }

        @Override
        public int count() {
            return count;
        }

        @Override
        public BytesRef valueAt(int index) {
            return terms[index];
        }
    };
}

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