com.nabla.wapp.server.xml.Util.java Source code

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Here is the source code for com.nabla.wapp.server.xml.Util.java

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/**
* Copyright 2012 nabla
*
* 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 com.nabla.wapp.server.xml;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.simpleframework.xml.core.PersistenceException;

public abstract class Util {

    private static final String ROW_COL = "[row,col]:[";
    private static final Log log = LogFactory.getLog(Util.class);

    public static String extractFieldName(final PersistenceException e) {
        final String message = e.getMessage();
        if (message != null && !message.isEmpty()) {
            // looking for ...'field name'...
            final String[] matches = e.getMessage().split("'");
            if (matches.length > 2)
                return matches[1];
        }
        return null;
    }

    public static Integer extractLine(final Exception e) {
        final String message = e.getMessage();
        if (message != null && !message.isEmpty()) {
            // looking for [row,col]:[x,x]
            int from = message.indexOf(ROW_COL);
            if (from >= 0) {
                from += ROW_COL.length();
                int to = message.indexOf(',', from);
                if (to > from) {
                    final String row = message.substring(from, to);
                    try {
                        return Integer.valueOf(row);
                    } catch (Throwable x) {
                        log.warn("fail to convert " + row + " to a row", x);
                    }
                }
            }
        }
        return null;
    }

}