Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import java.util.Map;

import org.w3c.dom.Node;

public class Main {
    /**
     * Get an int value.  Try the runtime attributes first and then back off to
     * the document element.  Throw a RuntimeException if the attribute is not
     * found or if the value is not parseable as an int.
     *
     * @param attrName attribute name to find
     * @param runtimeAttributes runtime attributes
     * @param docElement correct element that should have specified attribute
     * @return specified int value
     */
    public static int getInt(String attrName, Map<String, String> runtimeAttributes, Node docElement) {
        String stringValue = getStringValue(attrName, runtimeAttributes, docElement);
        if (stringValue != null) {
            try {
                return Integer.parseInt(stringValue);
            } catch (NumberFormatException e) {
                //swallow
            }
        }
        throw new RuntimeException("Need to specify a parseable int value in -- " + attrName
                + " -- in commandline or in config file!");
    }

    private static String getStringValue(String attrName, Map<String, String> runtimeAttributes, Node docElement) {
        String stringValue = runtimeAttributes.get(attrName);
        if (stringValue == null) {
            Node staleNode = docElement.getAttributes().getNamedItem(attrName);
            if (staleNode != null) {
                stringValue = staleNode.getNodeValue();
            }
        }
        return stringValue;
    }
}