Example usage for org.apache.commons.configuration AbstractConfiguration getClass

Introduction

In this page you can find the example usage for org.apache.commons.configuration AbstractConfiguration getClass.

Prototype

@HotSpotIntrinsicCandidate
public final native Class<?> getClass();

Source Link

Document

Returns the runtime class of this Object .

Usage

From source file:com.nesscomputing.config.Config.java

/**
 * Create a new configuration object from an existing object using overrides. If no overrides are passed in, the same object is returned.
 *
 * the//  w  w w .j  av a2 s  .com
 */
public static Config getOverriddenConfig(@Nonnull final Config config,
        @Nullable final AbstractConfiguration... overrideConfigurations) {
    if (overrideConfigurations == null || overrideConfigurations.length == 0) {
        return config;
    }

    final CombinedConfiguration cc = new CombinedConfiguration(new OverrideCombiner());

    int index = 0;
    final AbstractConfiguration first = config.config.getNumberOfConfigurations() > 0
            ? AbstractConfiguration.class.cast(config.config.getConfiguration(index)) // cast always succeeds, internally this returns cd.getConfiguration() which is AbstractConfiguration
            : null;

    // If the passed in configuration has a system config, add this as the very first one so
    // that system properties override still works.
    if (first != null && first.getClass() == SystemConfiguration.class) {
        cc.addConfiguration(first);
        index++;
    } else {
        // Otherwise, if any of the passed in configuration objects is a SystemConfiguration,
        // put that at the very beginning.
        for (AbstractConfiguration c : overrideConfigurations) {
            if (c.getClass() == SystemConfiguration.class) {
                cc.addConfiguration(c);
            }
        }
    }

    for (AbstractConfiguration c : overrideConfigurations) {
        if (c.getClass() != SystemConfiguration.class) {
            cc.addConfiguration(c); // Skip system configuration objects, they have been added earlier.
        }
    }

    // Finally, add the existing configuration elements at lowest priority.
    while (index < config.config.getNumberOfConfigurations()) {
        final AbstractConfiguration c = AbstractConfiguration.class
                .cast(config.config.getConfiguration(index++));
        if (c.getClass() != SystemConfiguration.class) {
            cc.addConfiguration(c);
        }
    }

    return new Config(cc);
}

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