Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 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.
 */

public class Main {
    /** The symbol used by XPath to query properties/attributes from a node. */
    private static final String xpathPropertySymbol = "@";

    /**
     * Prepends the at (@) symbol to the property name. This is XPath-specific.
     * <p>
     * Before you start to hate me, please be aware that I created this method
     * because of the way XPath can be used to query the JCR. For example, if you
     * have a query in which you want to evaluate a property of a child node, say
     * "jcr:content/@jcr:title," prepending the @ symbol to the property name
     * would only cause problems, i.e. "@jcr:content/@jcr:title." The issue being
     * that jcr:content is a child node, not a property, thus the query fails
     * miserably. <b>STOP DOING THAT AND I MAY CONSIDER REMOVING THIS METHOD</b>
     * <p>
     * As a measure to avoid the auto-symbol-prepending I'm going to check if the
     * symbol exists in the property name and prepend it if and only if it doesn't
     * exist. Thus, "published" would output "@published" and
     * "jcr:content/@jcr:title" would remain unaltered.
     * <p>
     * As a side-effect, if a property starts with the at (@) symbol, it is not
     * prepended again, but this wouldn't be the right way of using the API, i. e.
     * never prepend the at (@) symbol because it's XPath-specific.
     *
     * @param propertyName
     *          The name of the property that @ will be prepended to
     * @return A new string representing a valid XPath property
     */
    public static String prependSymbol(final String propertyName) {
        if (propertyName.contains(xpathPropertySymbol)) {

            return propertyName;

        } else {
            // Performance problems ensue
            return xpathPropertySymbol + propertyName;
        }
    }
}