flens.util.MVELUtil.java Source code

Introduction

Here is the source code for flens.util.MVELUtil.java

Source

/**
 *
 *     Copyright 2013 KU Leuven Research and Development - iMinds - Distrinet
 *
 *     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.
 *
 *     Administrative Contact: dnet-project-office@cs.kuleuven.be
 *     Technical Contact: wouter.deborger@cs.kuleuven.be
 */
package flens.util;

import java.io.Serializable;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;

import org.mvel2.ParserContext;
import org.mvel2.templates.CompiledTemplate;
import org.mvel2.templates.TemplateCompiler;

public class MVELUtil {

    private static ParserContext ctx;

    public static ParserContext getTooledContext() {
        return ctx;
    }

    static {
        ctx = new ParserContext();
        try {
            ctx.addImport("reverseHostname", MVELUtil.class.getMethod("reverseHostname", String.class));
        } catch (NoSuchMethodException e) {
            // handle exception here.
        }
    }

    public static String reverseHostname(String hostname) {
        String[] parts = hostname.split("[.]");
        ArrayUtils.reverse(parts);
        return StringUtils.join(parts, ".");
    }

    public static CompiledTemplate compileTemplateTooled(String source) {
        return TemplateCompiler.compileTemplate(source, getTooledContext());
    }
}