Example usage for java.util.prefs BackingStoreException BackingStoreException

Introduction

In this page you can find the example usage for java.util.prefs BackingStoreException BackingStoreException.

Prototype

public BackingStoreException(Throwable cause) 

Source Link

Document

Constructs a BackingStoreException with the specified cause.

Usage

From source file:org.pentaho.reporting.designer.core.settings.prefs.BinaryPreferences.java

protected void syncSpi() throws BackingStoreException {
    final File pathForNode = new File(getPathForNode());
    if (pathForNode.exists() == false && properties.isEmpty()) {
        return;/*from   w w w  .  j a  v a 2  s.c o  m*/
    }

    load(pathForNode);

    if (pathForNode.exists() == false) {
        if (pathForNode.mkdirs() == false) {
            throw new BackingStoreException("Failed to write config " + pathForNode); //$NON-NLS-1$
        }
    }

    final File target = new File(pathForNode, "prefs.properties");//NON-NLS
    if (target.exists() == false || target.lastModified() < lastModificationTime) {
        try {
            final OutputStream out = new BufferedOutputStream(new FileOutputStream(target));
            try {
                properties.store(out, "");
            } finally {
                out.close();
            }
        } catch (final Exception e) {
            throw new BackingStoreException("Failed to write config " + target); //$NON-NLS-1$
        }
    }
}

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From source file:org.pentaho.reporting.designer.core.settings.prefs.BinaryPreferences.java

private void load(final File pathForNode) throws BackingStoreException {
    if (pathForNode.exists()) {
        // load ..
        final File target = new File(pathForNode, "prefs.properties");//NON-NLS
        if (target.lastModified() > lastModificationTime) {
            if (target.exists()) {
                try {
                    final InputStream out = new BufferedInputStream(new FileInputStream(target));
                    try {
                        properties.clear();
                        properties.load(out);
                        lastModificationTime = Math.max(lastModificationTime + 1, System.currentTimeMillis());
                    } finally {
                        out.close();/*from  w w w . j  ava  2 s  . co  m*/
                    }
                } catch (final Exception e) {
                    UncaughtExceptionsModel.getInstance().addException(e);
                    throw new BackingStoreException("Failed to write config " + target); //$NON-NLS-1$
                }
            }
        }
    }
}

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From source file:org.pentaho.reporting.designer.core.settings.prefs.BinaryPreferences.java

protected void removeNodeSpi() throws BackingStoreException {
    // delete the directory ..
    final File pathForNode = new File(getPathForNode());
    if (pathForNode.exists()) {
        final File target = new File(pathForNode, "prefs.properties");//NON-NLS
        if (target.delete() == false) {
            throw new BackingStoreException("Unable to delete node-backend");
        }/* w ww  . ja va2  s.  co  m*/
        if (pathForNode.delete() == false) {
            throw new BackingStoreException("Unable to delete node-backend");
        }
    }
}

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From source file:org.pentaho.reporting.designer.core.settings.prefs.BinaryPreferences.java

/**
 * Encodes the given configuration path. All non-ascii characters get replaced by an escape sequence.
 *
 * @param path the path./* ww  w . java 2  s .c  o m*/
 * @return the translated path.
 * @throws java.util.prefs.BackingStoreException if something goes wrong.
 */
private static String decodePath(final String path) throws BackingStoreException {
    try {
        final char[] data = path.toCharArray();
        final StringBuffer encoded = new StringBuffer(path.length());
        int seenDollarIndex = -1;
        for (int i = 0; i < data.length; i++) {
            if (seenDollarIndex > -1) {
                if (data[i] == '$') {
                    encoded.append('$');
                    seenDollarIndex = -1;
                    continue;
                }

                if (i - seenDollarIndex == 4) {
                    final int c = Integer.parseInt(path.substring(seenDollarIndex + 1, i + 1), 16);
                    encoded.append((char) c);
                    seenDollarIndex = -1;
                    continue;
                } else {
                    continue;
                }
            }

            if (data[i] == '$') {
                seenDollarIndex = i;
            } else {
                encoded.append(data[i]);
            }
        }
        return encoded.toString();
    } catch (NumberFormatException nfe) {
        nfe.printStackTrace();
        throw new BackingStoreException("Failed to decode name: " + path);
    }
}

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From source file:org.sonatype.nexus.rt.prefs.FilePreferences.java

@Override
protected void syncSpi() throws BackingStoreException {
    if (isRemoved()) {
        return;/*w  w w . j av  a 2s .  c  o m*/
    }

    final File file = FilePreferencesFactory.getPreferencesFile();

    if (!file.exists()) {
        return;
    }

    synchronized (file) {
        Properties p = new Properties();
        try {
            final FileInputStream in = new FileInputStream(file);
            try {
                p.load(in);
            } finally {
                IOUtils.closeQuietly(in);
            }

            StringBuilder sb = new StringBuilder();
            getPath(sb);
            String path = sb.toString();

            final Enumeration<?> pnen = p.propertyNames();
            while (pnen.hasMoreElements()) {
                String propKey = (String) pnen.nextElement();
                if (propKey.startsWith(path)) {
                    String subKey = propKey.substring(path.length());
                    // Only load immediate descendants
                    if (subKey.indexOf('.') == -1) {
                        root.put(subKey, p.getProperty(propKey));
                    }
                }
            }
        } catch (IOException e) {
            throw new BackingStoreException(e);
        }
    }
}

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From source file:org.sonatype.nexus.rt.prefs.FilePreferences.java

@Override
protected void flushSpi() throws BackingStoreException {
    final File file = FilePreferencesFactory.getPreferencesFile();

    synchronized (file) {
        Properties p = new Properties();
        try {//from   ww w  .j  a  v  a2 s  .c  o  m

            StringBuilder sb = new StringBuilder();
            getPath(sb);
            String path = sb.toString();

            if (file.exists()) {
                final FileInputStream in = new FileInputStream(file);
                try {
                    p.load(in);
                } finally {
                    IOUtils.closeQuietly(in);
                }

                List<String> toRemove = new ArrayList<String>();

                // Make a list of all direct children of this node to be removed
                final Enumeration<?> pnen = p.propertyNames();
                while (pnen.hasMoreElements()) {
                    String propKey = (String) pnen.nextElement();
                    if (propKey.startsWith(path)) {
                        String subKey = propKey.substring(path.length());
                        // Only do immediate descendants
                        if (subKey.indexOf('.') == -1) {
                            toRemove.add(propKey);
                        }
                    }
                }

                // Remove them now that the enumeration is done with
                for (String propKey : toRemove) {
                    p.remove(propKey);
                }
            }

            // If this node hasn't been removed, add back in any values
            if (!isRemoved) {
                for (String s : root.keySet()) {
                    p.setProperty(path + s, root.get(s));
                }
            }

            final FileOutputStream out = new FileOutputStream(file);
            try {
                p.store(out, "FilePreferences");
            } finally {
                IOUtils.closeQuietly(out);
            }
        } catch (IOException e) {
            throw new BackingStoreException(e);
        }
    }
}

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