org.xmlactions.action.actions.ActionUtils.java Source code

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Here is the source code for org.xmlactions.action.actions.ActionUtils.java

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/*
 * Copyright (C) Mike Murphy 2003-2015 <mike.murphy@xmlactions.org><mwjmurphy@gmail.com>
 *
 * 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.
 */

package org.xmlactions.action.actions;

import org.apache.bsf.BSFException;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.lang.text.StrSubstitutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xmlactions.action.config.IExecContext;
import org.xmlactions.common.scripting.Scripting;
import org.xmlactions.common.text.ReplaceMarkers;

public class ActionUtils {

    private static final Logger log = LoggerFactory.getLogger(ActionUtils.class);

    public static String evaluateCalculation(IExecContext execContext, String exp) throws BSFException {
        String script = null;
        script = convertExpressionAmps(StrSubstitutor.replace(exp, execContext));
        // log.debug("expression:" + exp + " script:" + script);
        Object result = Scripting.getInstance().evaluate(script);
        return ConvertUtils.convert(result, Integer.class).toString();
    }

    /**
     * Evaluates a JavaScript expression.
     * 
     * @param context
     * @param exp
     * @return true of expression evaluates to true or false if expression
     *         evaluates to false or has an expression exception
     */
    public static boolean evaluateExpression(IExecContext execContext, String exp) {

        String script = null;
        try {
            //script = convertExpressionAmps(execContext.replace(exp));
            script = convertExpressionAmps(ReplaceMarkers.replace(exp, execContext));

            if (log.isDebugEnabled()) {
                log.debug("expression:" + exp + " script:" + script);
            }
            Object result = Scripting.getInstance().evaluate(script);
            if (result instanceof Boolean)
                return ((Boolean) result).booleanValue();
            else
                return new Boolean((String) result).booleanValue();
        } catch (BSFException ex) {
            throw new IllegalArgumentException(ex.getMessage(), ex);
        } catch (Exception ex) {
            log.error(ex.getMessage() + "\nin script:" + script);
        }
        return false;
    }

    public static String convertExpressionAmps(String in) {

        in = in.replaceAll("&lt;", "<");
        // log.debug("in:" + in);
        in = in.replaceAll("&gt;", ">");
        // log.debug("in:" + in);
        in = in.replaceAll("&amp;", "&");
        // log.debug("in:" + in);
        return in;
    }
}