org.pentaho.pac.server.config.HibernateSettingsXml.java Source code

Introduction

Here is the source code for org.pentaho.pac.server.config.HibernateSettingsXml.java

Source

/*
 * This program is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software 
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this 
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html 
 * or from the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright 2008 - 2009 Pentaho Corporation.  All rights reserved.
*/
package org.pentaho.pac.server.config;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.pentaho.pac.common.config.IHibernateSettings;
import org.pentaho.pac.server.common.util.DtdEntityResolver;
import org.pentaho.platform.api.util.XmlParseException;
import org.pentaho.platform.engine.security.userroledao.messages.Messages;
import org.pentaho.platform.util.xml.dom4j.XmlDom4JHelper;

public class HibernateSettingsXml implements IHibernateSettings {

    Document document;

    private static final String ROOT_ELEMENT = "settings";//$NON-NLS-1$
    private static final String XPATH_TO_HIBERNATE_CFG_FILE = "settings/config-file";//$NON-NLS-1$
    private static final String XPATH_TO_HIBERNATE_MANAGED = "settings/managed"; //$NON-NLS-1$

    public HibernateSettingsXml(File hibernateSettingsXmlFile)
            throws IOException, DocumentException, XmlParseException {
        this(getContents(hibernateSettingsXmlFile));
    }

    public HibernateSettingsXml(String xml) throws DocumentException, XmlParseException {
        this(XmlDom4JHelper.getDocFromString(xml, new DtdEntityResolver()));
    }

    public HibernateSettingsXml(Document doc) throws DocumentException {
        Element rootElement = doc.getRootElement();
        if ((rootElement != null) && !doc.getRootElement().getName().equals(ROOT_ELEMENT)) {
            throw new DocumentException(
                    Messages.getErrorString("HibernateSettingsXml.ERROR_0001_INVALID_ROOT_ELEMENT")); //$NON-NLS-1$
        }
        document = doc;
    }

    public HibernateSettingsXml() {
        document = DocumentHelper.createDocument();
        document.addElement(ROOT_ELEMENT);
    }

    public String getHibernateConfigFile() {
        return getValue(XPATH_TO_HIBERNATE_CFG_FILE);
    }

    public void setHibernateConfigFile(String hibernateConfigFile) {
        setValue(XPATH_TO_HIBERNATE_CFG_FILE, hibernateConfigFile);
    }

    public boolean getHibernateManaged() {
        return Boolean.parseBoolean(getValue(XPATH_TO_HIBERNATE_MANAGED));
    }

    public void setHibernateManaged(boolean hibernateManaged) {
        setValue(XPATH_TO_HIBERNATE_MANAGED, Boolean.toString(hibernateManaged));
    }

    private void setValue(String xPath, String value) {
        setValue(xPath, value, false);
    }

    private void setValue(String xPath, String value, boolean useCData) {
        Element element = (Element) document.selectSingleNode(xPath);
        if (element == null) {
            element = DocumentHelper.makeElement(document, xPath);
        }
        if (useCData) {
            element.clearContent();
            element.addCDATA(value);
        } else {
            element.setText(value);
        }
    }

    private String getValue(String xpath) {
        Element element = (Element) document.selectSingleNode(xpath);
        return element != null ? element.getText() : null;
    }

    public Document getDocument() {
        return document;
    }

    private static String getContents(File aFile) throws FileNotFoundException, IOException {
        StringBuilder contents = new StringBuilder();

        BufferedReader input = new BufferedReader(new FileReader(aFile));
        try {
            String line = null;
            String lineSeparator = System.getProperty("line.separator"); //$NON-NLS-1$
            while ((line = input.readLine()) != null) {
                contents.append(line);
                contents.append(lineSeparator);
            }
        } finally {
            input.close();
        }

        return contents.toString();
    }
}