msi.gama.util.file.GamaFileMetaData.java Source code

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Here is the source code for msi.gama.util.file.GamaFileMetaData.java

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/*******************************************************************************************************
 *
 * msi.gama.util.file.GamaFileMetaData.java, in plugin msi.gama.core,
 * is part of the source code of the GAMA modeling and simulation platform (v. 1.8)
 * 
 * (c) 2007-2018 UMI 209 UMMISCO IRD/SU & Partners
 *
 * Visit https://github.com/gama-platform/gama for license information and contacts.
 * 
 ********************************************************************************************************/
package msi.gama.util.file;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

import org.apache.commons.lang.StringUtils;

import ummisco.gama.dev.utils.DEBUG;

/**
 * Class GamaFileMetaInformation.
 *
 * @author drogoul
 * @since 11 fvr. 2015
 *
 */
public abstract class GamaFileMetaData implements IGamaFileMetaData {

    /**
     * The IResource modification stamp of the corresponding file at the time the cache entry was loaded.
     */
    public long fileModificationStamp;
    boolean hasFailed;

    public GamaFileMetaData(final long stamp) {
        this.fileModificationStamp = stamp;
    }

    public static <T extends IGamaFileMetaData> T from(final String s, final long stamp, final Class<T> clazz,
            final boolean includeOutdated) {
        T result = null;
        try {
            final Constructor<T> c = clazz.getDeclaredConstructor(String.class);
            result = c.newInstance(s);
            final boolean hasFailed = result.hasFailed();
            if (!hasFailed && !includeOutdated && result.getModificationStamp() != stamp) {
                return null;
            }
        } catch (final Exception ignore) {
            DEBUG.ERR("Error loading metadata " + s + " : " + ignore.getClass().getSimpleName() + ":"
                    + ignore.getMessage());
            if (ignore instanceof InvocationTargetException && ignore.getCause() != null) {
                ignore.getCause().printStackTrace();
            }
        }
        return result;
    }

    public GamaFileMetaData(final String propertyString) {
        final String s = StringUtils.substringBefore(propertyString, DELIMITER);
        if (FAILED.equals(s)) {
            hasFailed = true;
        } else if (s == null || s.isEmpty()) {
            fileModificationStamp = 0;
        } else {
            fileModificationStamp = Long.valueOf(s);
        }
    }

    @Override
    public boolean hasFailed() {
        return hasFailed;
    }

    protected String[] split(final String s) {
        return StringUtils.splitByWholeSeparatorPreserveAllTokens(s, DELIMITER);
    }

    /**
     * Method getModificationStamp()
     * 
     * @see msi.gama.util.file.IGamaFileInfo#getModificationStamp()
     */
    @Override
    public long getModificationStamp() {
        return fileModificationStamp;
    }

    @Override
    public abstract String getSuffix();

    @Override
    public Object getThumbnail() {
        return null;
    }

    /**
     * Subclasses should extend ! Method toPropertyString()
     * 
     * @see msi.gama.util.file.IGamaFileMetaData#toPropertyString()
     */

    @Override
    public String toPropertyString() {
        if (hasFailed) {
            return FAILED;
        }
        return String.valueOf(fileModificationStamp);
    }

    @Override
    public void setModificationStamp(final long ms) {
        fileModificationStamp = ms;
    }

}