我有一个带有.getProperties()方法的
Java类,但是当在Groovy中调用该方法时,它从
Groovy Beans magic而不是我的Java类定义的getProperties方法返回属性的LinkedHashMap.
如何调用我的getProperties()方法而不是Groovy方法?
我的Java代码(简化):
import java.util.*; public class MyObject { private Collection<Property> properties; private static class Property { public String value; public Property(String value) { this.value = value; } public String toString() { return String.format("Property: %s",this.value); } } private static interface PropertyFilter { boolean passes(String value); } public static class StartsWithPropertyFilter implements PropertyFilter { public String prefix; public StartsWithPropertyFilter(String prefix) { this.prefix = prefix; } public boolean passes(String value) { if(value == null) return false; return value.startsWith(prefix); } } public MyObject() { this(new ArrayList<Property>()); } public MyObject(Collection<Property> myProperties) { this.properties = myProperties; } public void addProperty(String value) { this.properties.add(new Property(value)); } public Collection<Property> getProperties(PropertyFilter... filters) { Collection<Property> ret = new ArrayList<Property>(); for(Property prop : properties) { boolean passes = true; for(PropertyFilter filter : filters) { if(!filter.passes(prop.value)) { passes = false; break; } } if(passes) { ret.add(prop); } } System.out.println("Java getProperties()"); return ret; } public static void main(String[] args) { MyObject obj = new MyObject(); obj.addProperty("Fast"); obj.addProperty("Strong"); obj.addProperty("FurIoUs"); System.out.println(obj.getProperties()); System.out.println(obj.getProperties(new MyObject.StartsWithPropertyFilter("F"))); } }
我的Groovy代码:
MyObject obj = new MyObject() obj.addProperty("Fast") obj.addProperty("Strong") obj.addProperty("FurIoUs") println obj.getProperties() println obj.getProperties(new MyObject.StartsWithPropertyFilter("F"))
用这个运行:
javac MyObject.java && groovy Run.groovy && echo && java MyObject
我得到这个输出:
[class:class MyObject] Java getProperties() [Property: Fast,Property: FurIoUs] Java getProperties() [Property: Fast,Property: Strong,Property: FurIoUs] Java getProperties() [Property: Fast,Property: FurIoUs]
我的Groovy版本是一个非常新的版本(2.0.1):
$groovy -version Groovy Version: 2.0.1 JVM: 1.6.0_27 Vendor: Sun Microsystems Inc. OS: Linux
但我最初在1.8.5看到了这个问题,我相信它是.