org.rapidoid.beany.JSProp Maven / Gradle / Ivy
/*-
* #%L
* rapidoid-commons
* %%
* Copyright (C) 2014 - 2018 Nikolche Mihajlovski and contributors
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package org.rapidoid.beany;
import org.rapidoid.annotation.Authors;
import org.rapidoid.annotation.Since;
import org.rapidoid.commons.JS;
import org.rapidoid.u.U;
import javax.script.ScriptException;
@Authors("Nikolche Mihajlovski")
@Since("5.3.0")
public class JSProp extends CustomReadOnlyProp implements Prop {
private final String expr;
public JSProp(String expr) {
this.expr = expr;
}
public static boolean is(String propName) {
return propName.startsWith("$.") || propName.equals("$");
}
@SuppressWarnings("unchecked")
@Override
public T getRaw(Object target) {
try {
return (T) JS.eval(expr, U.map("$", target));
} catch (ScriptException e) {
throw U.rte(e);
}
}
@Override
public String getName() {
return expr;
}
}