public SpanOrQuery(SpanQuery clauses) 
{
    // copy clauses array into an ArrayList
    this.clauses = new ArrayList< SpanQuery >(clauses.length);
    for (int i = 0; i <  clauses.length; i++) {
      SpanQuery clause = clauses[i];
      if (i == 0) {                               // check field
        field = clause.getField();
      } else if (!clause.getField().equals(field)) {
        throw new IllegalArgumentException("Clauses must have same field.");
      }
      this.clauses.add(clause);
    }
}

Construct a SpanOrQuery merging the provided clauses.

 public Object clone() 
{
    int sz = clauses.size();
    SpanQuery[] newClauses = new SpanQuery[sz];
    for (int i = 0; i <  sz; i++) {
      newClauses[i] = (SpanQuery) clauses.get(i).clone();
    }
    SpanOrQuery soq = new SpanOrQuery(newClauses);
    soq.setBoost(getBoost());
    return soq;
}

 public boolean equals(Object o) 
{
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    final SpanOrQuery that = (SpanOrQuery) o;
    if (!clauses.equals(that.clauses)) return false;
    if (!clauses.isEmpty() && !field.equals(that.field)) return false;
    return getBoost() == that.getBoost();
}

 public  void extractTerms(Set<Term> terms) 
{
    for(final SpanQuery clause: clauses) {
      clause.extractTerms(terms);
    }
}

 public SpanQuery[] getClauses() 
{
    return clauses.toArray(new SpanQuery[clauses.size()]);
}

Return the clauses whose spans are matched.

 public String getField() 
{
 return field;
}

 public Spans getSpans(IndexReader reader) throws IOException 
{
    if (clauses.size() == 1)                      // optimize 1-clause case
      return (clauses.get(0)).getSpans(reader);
    return new Spans() {
        private SpanQueue queue = null;
        private boolean initSpanQueue(int target) throws IOException {
          queue = new SpanQueue(clauses.size());
          Iterator< SpanQuery > i = clauses.iterator();
          while (i.hasNext()) {
            Spans spans = i.next().getSpans(reader);
            if (   ((target == -1) && spans.next())
                || ((target != -1) && spans.skipTo(target))) {
              queue.add(spans);
            }
          }
          return queue.size() != 0;
        }
        @Override
        public boolean next() throws IOException {
          if (queue == null) {
            return initSpanQueue(-1);
          }
          if (queue.size() == 0) { // all done
            return false;
          }
          if (top().next()) { // move to next
            queue.updateTop();
            return true;
          }
          queue.pop();  // exhausted a clause
          return queue.size() != 0;
        }
        private Spans top() { return queue.top(); }
        @Override
        public boolean skipTo(int target) throws IOException {
          if (queue == null) {
            return initSpanQueue(target);
          }
          boolean skipCalled = false;
          while (queue.size() != 0 && top().doc() <  target) {
            if (top().skipTo(target)) {
              queue.updateTop();
            } else {
              queue.pop();
            }
            skipCalled = true;
          }
          if (skipCalled) {
            return queue.size() != 0;
          }
          return next();
        }
        @Override
        public int doc() { return top().doc(); }
        @Override
        public int start() { return top().start(); }
        @Override
        public int end() { return top().end(); }
      @Override
      public Collection< byte[] > getPayload() throws IOException {
        ArrayList< byte[] > result = null;
        Spans theTop = top();
        if (theTop != null && theTop.isPayloadAvailable()) {
          result = new ArrayList< byte[] >(theTop.getPayload());
        }
        return result;
      }
      @Override
      public boolean isPayloadAvailable() {
        Spans top = top();
        return top != null && top.isPayloadAvailable();
      }
      @Override
      public String toString() {
          return "spans("+SpanOrQuery.this+")@"+
            ((queue == null)?"START"
             :(queue.size() >0?(doc()+":"+start()+"-"+end()):"END"));
        }
      };
}

 public int hashCode() 
{
    int h = clauses.hashCode();
    h ^= (h < <  10) | (h  > > > 23);
    h ^= Float.floatToRawIntBits(getBoost());
    return h;
}

 public Query rewrite(IndexReader reader) throws IOException 
{
    SpanOrQuery clone = null;
    for (int i = 0 ; i <  clauses.size(); i++) {
      SpanQuery c = clauses.get(i);
      SpanQuery query = (SpanQuery) c.rewrite(reader);
      if (query != c) {                     // clause rewrote: must clone
        if (clone == null)
          clone = (SpanOrQuery) this.clone();
        clone.clauses.set(i,query);
      }
    }
    if (clone != null) {
      return clone;                        // some clauses rewrote
    } else {
      return this;                         // no clauses rewrote
    }
}

 public String toString(String field) 
{
    StringBuilder buffer = new StringBuilder();
    buffer.append("spanOr([");
    Iterator< SpanQuery > i = clauses.iterator();
    while (i.hasNext()) {
      SpanQuery clause = i.next();
      buffer.append(clause.toString(field));
      if (i.hasNext()) {
        buffer.append(", ");
      }
    }
    buffer.append("])");
    buffer.append(ToStringUtils.boost(getBoost()));
    return buffer.toString();
}