org.kalypso.model.wspm.pdb.db.version.UpdateScript.java Source code

Introduction

Here is the source code for org.kalypso.model.wspm.pdb.db.version.UpdateScript.java

Source

/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.model.wspm.pdb.db.version;

import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.kalypso.model.wspm.pdb.internal.WspmPdbCorePlugin;
import org.osgi.framework.Bundle;
import org.osgi.framework.Version;

import com.google.common.base.Charsets;

/**
 * @author Gernot Belger
 */
public class UpdateScript implements Comparable<UpdateScript> {
    private static final String PROPERTY_TARGET_VERSION = "targetVersion"; //$NON-NLS-1$

    static final String PROPERTY_COMMENT = "comment"; //$NON-NLS-1$

    private static final String PROPERTY_LOCATION = "location"; //$NON-NLS-1$

    private static final String PROPERTY_TYPE = "type"; //$NON-NLS-1$

    private static final String ELEMENT_PAGE = "page"; //$NON-NLS-1$

    private static final String PROPERTY_CLASS = "class"; //$NON-NLS-1$

    private final Version m_targetVersion;

    private final String m_location;

    private final String m_type;

    private final String m_bundleID;

    private final IConfigurationElement[] m_pageElements;

    public UpdateScript(final IConfigurationElement element) {
        m_targetVersion = new Version(element.getAttribute(PROPERTY_TARGET_VERSION));
        // m_comment = element.getAttribute( PROPERTY_COMMENT );
        m_location = element.getAttribute(PROPERTY_LOCATION);
        m_type = element.getAttribute(PROPERTY_TYPE);
        m_bundleID = element.getNamespaceIdentifier();

        m_pageElements = element.getChildren(ELEMENT_PAGE);
    }

    public Version getTargetVersion() {
        return m_targetVersion;
    }

    public String[] loadSQL() throws IOException {
        final Bundle bundle = Platform.getBundle(m_bundleID);
        final URL entry = bundle.getEntry(m_location);
        final String rawSQL = IOUtils.toString(entry, Charsets.UTF_8.name());

        final Collection<String> noComments = new ArrayList<>();

        final String[] lines = StringUtils.split(rawSQL, "\n\r"); //$NON-NLS-1$
        for (final String line : lines) {
            final String trim = StringUtils.trimToEmpty(line);
            if (!trim.isEmpty() && !trim.startsWith("--")) //$NON-NLS-1$
            {
                noComments.add(trim);
            }
        }

        final String result = StringUtils.join(noComments, "\n"); //$NON-NLS-1$

        return StringUtils.split(result, ';'); //$NON-NLS-1$
    }

    public String getType() {
        return m_type;
    }

    @Override
    public int compareTo(final UpdateScript o) {
        return m_targetVersion.compareTo(o.getTargetVersion());
    }

    public IUpdateScriptPage[] createVariablePages(final UpdateScriptPageData data) throws CoreException {
        final Collection<IUpdateScriptPage> pages = new ArrayList<>();

        for (final IConfigurationElement element : m_pageElements) {
            try {
                final IUpdateScriptPage page = (IUpdateScriptPage) element
                        .createExecutableExtension(PROPERTY_CLASS);
                page.init(data);
                pages.add(page);
            } catch (final CoreException e) {
                throw e;
            } catch (final Exception e) {
                e.printStackTrace();
                final IStatus status = new Status(IStatus.ERROR, WspmPdbCorePlugin.PLUGIN_ID,
                        "Failed to create update wizard page", e); //$NON-NLS-1$
                throw new CoreException(status);
            }
        }

        return pages.toArray(new IUpdateScriptPage[pages.size()]);
    }
}