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import org.apache.axiom.util.stax.dialect.StAXDialect;
import org.apache.axiom.util.stax.dialect.StAXDialectDetector;

 * Defines a particular StAX writer configuration. An implementation of this
 * interface must satisfy the following requirements:
 * <ol>
 * <li>It MUST be immutable.
 * <li>It MUST either be a singleton or properly implement
 * {@link Object#equals(Object)} and {@link Object#hashCode()}.
 * </ol>
 * These two requirements ensure that instances of this interface may be used as
 * cache keys.
 * @see StAXParserConfiguration
public interface StAXWriterConfiguration {
     * The default configuration.
    StAXWriterConfiguration DEFAULT = new StAXWriterConfiguration() {
        public XMLOutputFactory configure(XMLOutputFactory factory, StAXDialect dialect) {
            return factory;

        public String toString() {
            return "DEFAULT";

     * Apply the configuration to the given factory. The method MAY optionally
     * wrap the factory.
     * @param factory
     *            the factory to configure
     * @param dialect
     *            The dialect of the StAX implementation as detected by
     *            {@link StAXDialectDetector}. The implementation may use this
     *            information to configure implementation specific settings.
     * @return The configured factory. This may be the original factory (if the
     *         implementation only changes the factory properties), or a
     *         wrapper.
    XMLOutputFactory configure(XMLOutputFactory factory, StAXDialect dialect);