org.jboss.forge.addon.configuration.ConfigurationAdapterSubset.java Source code

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Here is the source code for org.jboss.forge.addon.configuration.ConfigurationAdapterSubset.java

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/**
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Eclipse Public License version 1.0, available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.jboss.forge.addon.configuration;

import java.util.Collections;
import java.util.Iterator;

import javax.enterprise.inject.Vetoed;

/**
 * @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
 * @author <a href="mailto:danielsoro@gmail.com">Daniel Cunha (soro)</a>
 */
@Vetoed
public class ConfigurationAdapterSubset extends ConfigurationAdapter {
    private final org.apache.commons.configuration.Configuration parent;
    private final String prefix;

    public ConfigurationAdapterSubset(org.apache.commons.configuration.Configuration delegate, String prefix) {
        super(delegate.subset(prefix));
        this.parent = delegate;
        this.prefix = prefix;
    }

    @Override
    public Iterator<String> getKeys() {
        synchronized (parent) {
            try {
                return parent.subset(prefix).getKeys();
            } catch (IllegalArgumentException e) {
                return Collections.emptyIterator();
            }
        }
    }

    @Override
    public void clearProperty(String key) {
        synchronized (parent) {
            try {
                parent.subset(prefix).clearProperty(key);
            } catch (IllegalArgumentException e) {
                // do nothing;
            }
        }
    }

    @Override
    public void setProperty(final String key, final Object value) {
        synchronized (parent) {
            try {
                parent.subset(prefix).setProperty(key, value);
            } catch (IllegalArgumentException e) {
                parent.setProperty(prefix + "." + key, value);
            }
        }
    }
}