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eFaps is a framework used to map objects with or without attached files to a relational database and optional file systems (only for attaches files). Configurable access control can be provided down to object and attribute level depending on implementation and use case. Depending on requirements, events (like triggers) allow to implement business logic and to separate business logic from user interface. The framework includes integrations (e.g. webdav, full text search) and a web application as 'simple' configurable user interface. Some best practises, example web application modules (e.g. team work module) support administrators and implementers using this framework.

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/*
 * Copyright 2003 - 2011 The eFaps Team
 *
 * 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.
 *
 * Revision:        $Rev: 6210 $
 * Last Changed:    $Date: 2011-02-18 16:02:56 -0500 (Fri, 18 Feb 2011) $
 * Last Changed By: $Author: [email protected] $
 */

package org.efaps.update.schema.program.staticsource;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import org.efaps.ci.CIAdminProgram;
import org.efaps.ci.CIType;
import org.efaps.db.Checkout;
import org.efaps.db.Instance;
import org.efaps.util.EFapsException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.yahoo.platform.yui.compressor.CssCompressor;

/**
 * TODO description
 *
 * @author The eFaps Team
 * @version $Id: CSSCompiler.java 6210 2011-02-18 21:02:56Z [email protected] $
 */
public class CSSCompiler
    extends AbstractStaticSourceCompiler
{

    /**
     * Logging instance used in this class.
     */
    private static final Logger LOG = LoggerFactory.getLogger(CSSCompiler.class);

    /**
     * {@inheritDoc}
     */
    @Override
    protected CIType getClassName4Type()
    {
        return CIAdminProgram.CSS;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected CIType getClassName4Type2Type()
    {
        return CIAdminProgram.CSS2CSS;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected CIType getClassName4TypeCompiled()
    {
        return  CIAdminProgram.CSSCompiled;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected String getCompiledString(final Instance _instance)
    {
        String ret = "";
        try {
            final Checkout checkout = new Checkout(_instance);
            final BufferedReader in = new BufferedReader(new InputStreamReader(checkout.execute(), "UTF-8"));

            final CssCompressor compressor = new CssCompressor(in);
            in.close();
            checkout.close();
            final ByteArrayOutputStream byteout = new ByteArrayOutputStream();
            final OutputStreamWriter out = new OutputStreamWriter(byteout);
            compressor.compress(out, 2000);
            out.flush();

            ret = byteout.toString();
            ret += "\n";

        } catch (final EFapsException e) {
            CSSCompiler.LOG.error("error during checkout of Instance:" + _instance, e);
            e.printStackTrace();
        } catch (final IOException e) {
            CSSCompiler.LOG.error("error during reqding of the Inputstram of Instance with oid:" + _instance, e);
        }
        return ret;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public AbstractSource getNewSource(final String _name,
                                       final Instance _instance)
    {
        return new OneCSS(_name, _instance);
    }

    /**
     * Class represents on stylesheet.
     */
    protected class OneCSS
        extends AbstractSource
    {

        public OneCSS(final String _name,
                      final Instance _instance)
        {
            super(_name, _instance);
        }
    }

}