org.simpleflatmapper.reflect.getter.GetterHelper Maven / Gradle / Ivy
package org.simpleflatmapper.reflect.getter;
import org.simpleflatmapper.util.TypeHelper;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
public class GetterHelper {
public static final int SYNTHETIC = 0x00001000;
public static boolean isPublicMember(final int modifiers) {
return !Modifier.isStatic(modifiers) && Modifier.isPublic(modifiers)
&& (modifiers & SYNTHETIC) == 0;
}
public static boolean methodNameMatchesProperty(final String name, final String property) {
if (name.length() > 3 && (name.startsWith("get"))) {
return name.regionMatches(true, 3, property, 0, property.length());
} else if (name.length()> 2 && name.startsWith("is")) {
return name.regionMatches(true, 2, property, 0, property.length());
}
return name.equalsIgnoreCase(property);
}
public static boolean fieldModifiersMatches(final int modifiers) {
return !Modifier.isStatic(modifiers) && ! Modifier.isFinal(modifiers);
}
public static boolean fieldNameMatchesProperty(final String name, final String property) {
return name.equalsIgnoreCase(property);
}
public static String getPropertyNameFromMethodName(final String name) {
if (name.startsWith("get") && name.length() > 3) {
return name.substring(3, 4).toLowerCase() + name.substring(4);
} else if (name.startsWith("is") && name.length() > 2) {
return name.substring(2, 3).toLowerCase() + name.substring(3);
} else {
return name;
}
}
public static boolean isGetter(Method method) {
return GetterHelper.isPublicMember(method.getModifiers())
&& (method.getParameterTypes() == null || method.getParameterTypes().length == 0)
&& !method.getReturnType().equals(void.class)
&& !isToString(method)
&& !isHashcode(method)
&& !isClone(method);
}
private static boolean isClone(Method method) {
return "clone".equals(method.getName())
&& (method.getReturnType().equals(Object.class) || method.getDeclaringClass().equals(method.getReturnType()))
&& (method.getParameterTypes() == null || method.getParameterTypes().length == 0);
}
private static boolean isToString(Method method) {
return "toString".equals(method.getName()) && method.getReturnType().equals(String.class)
&& (method.getParameterTypes() == null || method.getParameterTypes().length == 0);
}
private static boolean isHashcode(Method method) {
return "hashCode".equals(method.getName()) && method.getReturnType().equals(int.class)
&& (method.getParameterTypes() == null || method.getParameterTypes().length == 0);
}
public static boolean isCompatible(Type targetType, Type returnType) {
return TypeHelper.isAssignable(targetType, returnType);
}
}