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Apache CXF example source code file (Form.java)

This example Apache CXF source code file (Form.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

argument, arraylist, dom, element, element, form, form, list, list, log, logging, node, option, optiongroup, string, string, tokenconsumer, util

The Apache CXF Form.java source code

/**
 * 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.
 */

package org.apache.cxf.tools.common.toolspec.parser;

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.w3c.dom.Element;
import org.w3c.dom.Node;

import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.helpers.DOMUtils;
import org.apache.cxf.tools.common.toolspec.Tool;


public class Form implements TokenConsumer {

    private static final Logger LOG = LogUtils.getL7dLogger(Form.class);
    private final Element element;

    private final List<Object> arguments = new ArrayList();
    private final List<Object> optionGroups = new ArrayList();
    private final List<Object> options = new ArrayList();

    public Form(Element el) {
        this.element = el;
        
        List<Element> elemList = 
            DOMUtils.findAllElementsByTagNameNS(element, 
                                                Tool.TOOL_SPEC_PUBLIC_ID, 
                                                "optionGroup");
        
        for (Element elem : elemList) {
            optionGroups.add(new OptionGroup(elem));
        }
        
        elemList = 
            DOMUtils.findAllElementsByTagNameNS(element, 
                                                Tool.TOOL_SPEC_PUBLIC_ID, 
                                                "argument");
        for (Element elem : elemList) {
            arguments.add(new Argument(elem));
        }     
        
        getOptions(element);
    }

    private void getOptions(Element el) {
        
        Node node = el.getFirstChild();
        while (node != null) {
            if ("option".equals(node.getNodeName())) {
                options.add(new Option((Element)node));
            }
            node = node.getNextSibling();
        }
    }

    /**
     * Attempt to consume all the args in the input stream by matching them to
     * options, optionGroups and argument specified in the usage definition.
     */
    public boolean accept(TokenInputStream args, Element result, ErrorVisitor errors) {
        if (LOG.isLoggable(Level.FINE)) {
            LOG.fine("Accepting token stream for form of usage: " + this + ", tokens are " + args);
        }
        int oldpos = args.getPosition();
        if (LOG.isLoggable(Level.FINE)) {
            LOG.fine("Position is: " + oldpos);
        }
        boolean hasInfo = hasInfoOption(args);
        args.setPosition(oldpos);
        while (args.available() > 0) {
            if (LOG.isLoggable(Level.FINE)) {
                LOG.fine("Args is available");
            }
            boolean accepted = false;
            for (int i = 0; i < optionGroups.size(); i++) {
                OptionGroup optionGroup = (OptionGroup)optionGroups.get(i);
                if (optionGroup.accept(args, result, errors)) {
                    accepted = true;
                    break;
                }
            }

            if (!accepted) {
                for (int i = 0; i < options.size(); i++) {
                    Option option = (Option)options.get(i);
                    if (option.accept(args, result, errors)) {
                        accepted = true;
                        break;
                    }
                }
            }

            if (!accepted) {
                break;
            }
        }

        for (int i = 0; i < optionGroups.size(); i++) {
            OptionGroup optionGroup = (OptionGroup)optionGroups.get(i);

            if (!optionGroup.isSatisfied(errors) && !hasInfo) {
                return false;
            }
        }

        for (int i = 0; i < options.size(); i++) {
            Option option = (Option)options.get(i);

            if (!option.isSatisfied(errors) && !hasInfo) {
                return false;
            }
        }

        if (arguments != null) {
            for (int i = 0; i < arguments.size(); i++) {
                Argument argument = (Argument)arguments.get(i);

                argument.accept(args, result, errors);
                if (!argument.isSatisfied(errors) && !hasInfo) {
                    return false;
                }
            }
        }

        if (args.available() > 0) {
            String next = args.peek();

            if (next.startsWith("-")) {
                errors.add(new ErrorVisitor.UnexpectedOption(next));
            } else {
                errors.add(new ErrorVisitor.UnexpectedArgument(next));
            }
            if (LOG.isLoggable(Level.FINE)) {
                LOG.fine(this + " form is returning false as there are more args available"
                         + " that haven't been consumed");
            }
            args.setPosition(oldpos);
            return false;
        }
        // If we have got here than we have fully consumed all the arguments.
        if (LOG.isLoggable(Level.FINE)) {
            LOG.fine("Form " + this + " is returning true");
        }
        return true;
    }

    public boolean hasInfoOption(TokenInputStream args) {
        int pos = args.getPosition();
        args.setPosition(0);
        String optionValue;
        while (args.available() > 0) {
            optionValue = args.read();
            if ("-?".equals(optionValue) || "-help".equals(optionValue) || "-h".equals(optionValue)
                || "-v".equals(optionValue)) {
                return true;
            }
        }
        args.setPosition(pos);
        return false;
    }

    public boolean isSatisfied(ErrorVisitor errors) {
        return true;
    }

    public String getName() {
        if (element.hasAttribute("value")) {
            return element.getAttribute("value");
        } else {
            return "default";
        }

    }

    public String toString() {
        return getName();
    }

}




Other Apache CXF examples (source code examples)


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