本文整理了Java中org.apache.lucene.util.automaton.Operations.isEmpty()方法的一些代码示例，展示了Operations.isEmpty()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Operations.isEmpty()方法的具体详情如下：
包路径：org.apache.lucene.util.automaton.Operations
类名称：Operations
方法名：isEmpty

Operations.isEmpty介绍

[英]Returns true if the given automaton accepts no strings.
[中]如果给定的自动机不接受任何字符串，则返回true。

代码示例

代码示例来源：origin: org.apache.lucene/lucene-core

/**
 * Returns a (deterministic) automaton that accepts the intersection of the
 * language of <code>a1</code> and the complement of the language of
 * <code>a2</code>. As a side-effect, the automata may be determinized, if not
 * already deterministic.
 * <p>
 * Complexity: quadratic in number of states if a2 already deterministic and
 *  exponential in number of a2's states otherwise.
 */
static public Automaton minus(Automaton a1, Automaton a2, int maxDeterminizedStates) {
 if (Operations.isEmpty(a1) || a1 == a2) {
  return Automata.makeEmpty();
 }
 if (Operations.isEmpty(a2)) {
  return a1;
 }
 return intersection(a1, complement(a2, maxDeterminizedStates));
}

代码示例来源：origin: org.apache.lucene/lucene-core

return isEmpty(a1);

代码示例来源：origin: org.apache.lucene/lucene-core

if (Operations.isEmpty(a)) {
 return new Automaton();

代码示例来源：origin: org.apache.lucene/lucene-core

if (Operations.isEmpty(automaton)) {

代码示例来源：origin: harbby/presto-connectors

/**
 * Returns a (deterministic) automaton that accepts the intersection of the
 * language of <code>a1</code> and the complement of the language of
 * <code>a2</code>. As a side-effect, the automata may be determinized, if not
 * already deterministic.
 * <p>
 * Complexity: quadratic in number of states if a2 already deterministic and
 *  exponential in number of a2's states otherwise.
 */
static public Automaton minus(Automaton a1, Automaton a2, int maxDeterminizedStates) {
 if (Operations.isEmpty(a1) || a1 == a2) {
  return Automata.makeEmpty();
 }
 if (Operations.isEmpty(a2)) {
  return a1;
 }
 return intersection(a1, complement(a2, maxDeterminizedStates));
}

代码示例来源：origin: org.apache.servicemix.bundles/org.apache.servicemix.bundles.lucene

/**
 * Returns a (deterministic) automaton that accepts the intersection of the
 * language of <code>a1</code> and the complement of the language of
 * <code>a2</code>. As a side-effect, the automata may be determinized, if not
 * already deterministic.
 * <p>
 * Complexity: quadratic in number of states if a2 already deterministic and
 *  exponential in number of a2's states otherwise.
 */
static public Automaton minus(Automaton a1, Automaton a2, int maxDeterminizedStates) {
 if (Operations.isEmpty(a1) || a1 == a2) {
  return Automata.makeEmpty();
 }
 if (Operations.isEmpty(a2)) {
  return a1;
 }
 return intersection(a1, complement(a2, maxDeterminizedStates));
}

代码示例来源：origin: org.infinispan/infinispan-embedded-query

/**
 * Returns a (deterministic) automaton that accepts the intersection of the
 * language of <code>a1</code> and the complement of the language of
 * <code>a2</code>. As a side-effect, the automata may be determinized, if not
 * already deterministic.
 * <p>
 * Complexity: quadratic in number of states if a2 already deterministic and
 *  exponential in number of a2's states otherwise.
 */
static public Automaton minus(Automaton a1, Automaton a2, int maxDeterminizedStates) {
 if (Operations.isEmpty(a1) || a1 == a2) {
  return Automata.makeEmpty();
 }
 if (Operations.isEmpty(a2)) {
  return a1;
 }
 return intersection(a1, complement(a2, maxDeterminizedStates));
}

代码示例来源：origin: harbby/presto-connectors

return isEmpty(a1);

代码示例来源：origin: org.apache.lucene/lucene-sandbox

public Query rewrite(IndexReader reader) throws IOException {
 if (Operations.isEmpty(det)) {
  return new MatchNoDocsQuery();

代码示例来源：origin: org.infinispan/infinispan-embedded-query

return isEmpty(a1);

代码示例来源：origin: org.apache.servicemix.bundles/org.apache.servicemix.bundles.lucene

return isEmpty(a1);

代码示例来源：origin: org.infinispan/infinispan-embedded-query

if (Operations.isEmpty(a)) {
 return new Automaton();

代码示例来源：origin: harbby/presto-connectors

if (Operations.isEmpty(a)) {
 return new Automaton();

代码示例来源：origin: org.apache.servicemix.bundles/org.apache.servicemix.bundles.lucene

if (Operations.isEmpty(a)) {
 return new Automaton();

代码示例来源：origin: org.apache.servicemix.bundles/org.apache.servicemix.bundles.lucene

if (Operations.isEmpty(automaton)) {

代码示例来源：origin: org.infinispan/infinispan-embedded-query

if (Operations.isEmpty(automaton)) {

代码示例来源：origin: harbby/presto-connectors

if (Operations.isEmpty(automaton)) {