com.fasterxml.jackson.databind.util.ViewMatcher Maven / Gradle / Ivy
package com.fasterxml.jackson.databind.util;
/**
* Helper class used for checking whether a property is visible
* in the active view
*/
public class ViewMatcher implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
protected final static ViewMatcher EMPTY = new ViewMatcher();
public boolean isVisibleForView(Class activeView) { return false; }
public static ViewMatcher construct(Class[] views)
{
if (views == null) {
return EMPTY;
}
switch (views.length) {
case 0:
return EMPTY;
case 1:
return new Single(views[0]);
}
return new Multi(views);
}
/*
/**********************************************************
/* Concrete sub-classes
/**********************************************************
*/
private final static class Single extends ViewMatcher
{
private static final long serialVersionUID = 1L;
private final Class _view;
public Single(Class v) { _view = v; }
@Override
public boolean isVisibleForView(Class activeView) {
return (activeView == _view) || _view.isAssignableFrom(activeView);
}
}
private final static class Multi extends ViewMatcher
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
private final Class[] _views;
public Multi(Class[] v) { _views = v; }
@Override
public boolean isVisibleForView(Class activeView)
{
for (int i = 0, len = _views.length; i < len; ++i) {
Class view = _views[i];
if ((activeView == view) || view.isAssignableFrom(activeView)) {
return true;
}
}
return false;
}
}
}