com.hazelcast.shaded.org.locationtech.jts.util.TestBuilderProxy Maven / Gradle / Ivy
/*
* Copyright (c) 2019 Martin Davis.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v20.html
* and the Eclipse Distribution License is available at
*
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package com.hazelcast.shaded.org.locationtech.jts.util;
import java.awt.Color;
import java.lang.reflect.Method;
import com.hazelcast.shaded.org.locationtech.jts.geom.Geometry;
/**
* A proxy to call TestBuilder functions dynamically.
* If TestBuilder is not present, functions act as a no-op.
*
* This class is somewhat experimental at the moment, so
* is not recommended for production use.
*
* @author Martin Davis
*
*/
public class TestBuilderProxy {
private static final String CLASS_FUNCTIONS_UTIL = "org.locationtech.jtstest.function.FunctionsUtil";
private static Class tbClass;
private static Method methodShowIndicator;
private static Method methodShowIndicatorLine;
private static void init() {
if (tbClass != null) return;
try {
tbClass = TestBuilderProxy.class.getClassLoader().loadClass(CLASS_FUNCTIONS_UTIL);
methodShowIndicator = tbClass.getMethod("showIndicator", Geometry.class);
methodShowIndicatorLine = tbClass.getMethod("showIndicator", Geometry.class, Color.class);
}
catch (Exception ex) {
// Fail silently to avoid unexpected output in production
//System.err.println("TestBuilderProxy: Can't init");
}
}
/**
* Tests whether the proxy is active (i.e. the TestBuilder is available).
* This allows avoiding expensive geometry materialization if not needed.
*
* @return true if the proxy is active
*/
public static boolean isActive() {
init();
return tbClass != null;
}
// TODO: expose an option in the TestBuilder to make this inactive
// This will avoid a huge performance hit if the visualization is not needed
public static void showIndicator(Geometry geom) {
init();
if (methodShowIndicator == null) return;
try {
methodShowIndicator.invoke(null, geom);
} catch (Exception e) {
// Fail silently to avoid unexpected output in production
// Or perhaps should fail noisy, since at this point the function should be working?
}
}
public static void showIndicator(Geometry geom, Color lineClr) {
init();
if (methodShowIndicatorLine == null) return;
try {
methodShowIndicatorLine.invoke(null, geom, lineClr);
} catch (Exception e) {
// Fail silently to avoid unexpected output in production
// Or perhaps should fail noisy, since at this point the function should be working?
}
}
}