问在groovy中一次性执行Null和empty检查EN如果在字符串上使用了.isEmpty(),那么您也可以直接使用Groovy "truth“,因为null和空字符串都是"false”。empty 如果 变量 是非空或非零的值,则 empty() 返回 FALSE。换句话说,、0、0、NULL、FALSE、array()、var $var、未
*/publicQueryquery(int page){String source="Groovy";String articleType=4;// (source,articleType) 组成联合索引,提高查询效率Query query=Query.query(where("source").is(source));// 查询条件1:source="Groovy"query.addCriteria(where("articleType").is(articleType));// 查询条件2:articleType=4Page...
`status`, `extend_info`, `created_time`, `modified_time`) VALUES (1, 'helloService', 'package com.maple.resource.groovy\r\n\r\nimport com.maple.database.groovy.HelloService\r\n\r\npublic class HelloServiceImpl implements HelloService {\r\n\r\n @Override\r\n String sayHello(String ...
当GString变量强制转换为String变量的时候,它会自动计算闭包的值,并通过调用toString()方法作为返回值。例如: int i =3 def s1 ="i's value is: ${i}" def s2 ="i's value is: ${-> i}" i++ asserts1 =="i's value is: 3"// 预先计算,在创建的时候赋值 asserts2 =="i's value is: 4...
/** * this cache contains the loaded classes or PARSING, if the class is currently parsed */ protected final Map<String, Class> classCache = new HashMap<String, Class>(); protected void setClassCacheEntry(Class cls) { synchronized (classCache) { // 同步块 classCache.put(cls.getName()...
class Interception implements GroovyInterceptable { def definedMethod() { } def invokeMethod(String name, Object args) { 'invokedMethod' } } 下面这段代码测试显示,无论方法是否存在,调用方法都将返回同样的值。 class InterceptableTest extends GroovyTestCase { void testCheckInterception() { def inte...
(ScriptEngineManager manager, String engineName, String script) { // Try getting the engine ScriptEngine engine = manager.getEngineByName(engineName); if (engine == null) { System.out.println(engineName + " is not available."); return; } // If we get here, it means we have the ...
/*** this cache contains the loaded classes or PARSING, if the class is currently parsed*/protectedfinal Map<String, Class> classCache =newHashMap<String, Class>();protectedvoidsetClassCacheEntry(Class cls) {synchronized (classCache) {// 同步块c...
def check(String name) { // name non-null and non-empty according to Groovy Truth assert name // safe navigation + Groovy Truth to check assert name?.size() > 3 } 1. 2. 3. 4. 5. 6. 你还会注意到 Groovy 的“Power Assert”语句提供的良好输出,其中包含每个被断言的子表达式的各种值的...
(译者注:这里和Java中String类型的+操作类似) Groovy开发套件提供了下面的方法来轻松实现从集合中删除元素: assert ['a','b','c','b','b'] - 'c' == ['a','b','b','b'] assert ['a','b','c','b','b'] - 'b' == ['a','c'] assert ['a','b','c','b','b'] - ['b...