import com.sun.xml.internal.bind.v2.util.EditDistance; //导入依赖的package包/类
/**
 * Report errors for unused propOrder entries.
 */
public void checkUnusedProperties() {
    for( int i=0; i<used.length; i++ )
        if(used[i]==null) {
            String unusedName = propOrder[i];
            String nearest = EditDistance.findNearest(unusedName, new AbstractList<String>() {
                public String get(int index) {
                    return properties.get(index).getName();
                }

                public int size() {
                    return properties.size();
                }
            });
            boolean isOverriding = (i > (properties.size()-1)) ? false : properties.get(i).hasAnnotation(OverrideAnnotationOf.class);
            if (!isOverriding) {
                builder.reportError(new IllegalAnnotationException(
                Messages.PROPERTY_ORDER_CONTAINS_UNUSED_ENTRY.format(unusedName,nearest),ClassInfoImpl.this));
            }
        }
}
 

import com.sun.xml.internal.bind.v2.util.EditDistance; //导入依赖的package包/类
/**
 * Finds a type name that this context recognizes which is
 * "closest" to the given type name.
 *
 * <p>
 * This method is used for error recovery.
 */
public String getNearestTypeName(QName name) {
    String[] all = new String[typeMap.size()];
    int i=0;
    for (QName qn : typeMap.keySet()) {
        if(qn.getLocalPart().equals(name.getLocalPart()))
            return qn.toString();  // probably a match, as people often gets confused about namespace.
        all[i++] = qn.toString();
    }

    String nearest = EditDistance.findNearest(name.toString(), all);

    if(EditDistance.editDistance(nearest,name.toString())>10)
        return null;    // too far apart.

    return nearest;
}
 

import com.sun.xml.internal.bind.v2.util.EditDistance; //导入依赖的package包/类
/**
 * Verify that the given URI is indeed a valid extension namespace URI,
 * and if so enable it.
 * <p>
 * This method does all the error handling.
 */
protected final void checkAndEnable(String uri) throws SAXException {
    if( !isRecognizableExtension(uri) ) {
        String nearest = EditDistance.findNearest(uri, recognizableExtensions);
        // not the namespace URI we know of
        error( Messages.ERR_UNSUPPORTED_EXTENSION.format(uri,nearest) );
    } else
    if( !isSupportedExtension(uri) ) {
        // recognizable but not not supported, meaning
        // the plug-in isn't enabled

        // look for plug-in that handles this URI
        Plugin owner = null;
        for( Plugin p : options.getAllPlugins() ) {
            if(p.getCustomizationURIs().contains(uri)) {
                owner = p;
                break;
            }
        }
        if(owner!=null)
            // we know the plug-in that supports this namespace, but it's not enabled
            error( Messages.ERR_PLUGIN_NOT_ENABLED.format(owner.getOptionName(),uri));
        else {
            // this shouldn't happen, but be defensive...
            error( Messages.ERR_UNSUPPORTED_EXTENSION.format(uri) );
        }
    }

    // as an error recovery enable this namespace URI anyway.
    enabledExtensions.add(uri);
}