Java Code Examples for org.apache.commons.lang.StringUtils#stripToNull()

private void updateErrorLabel(String text) {
    if (StringUtils.stripToNull(text) == null) {
        if (isChecking.get()) {
            errorLabel.setIcon(LOADING_ICON);
        } else {
            if (isSuccess.get()) {
                errorLabel.setIcon(SUCCESS_ICON);
            } else {
                errorLabel.setIcon(UNKNOWN_ICON);
            }
        }
        errorLabel.setText("");
    } else {
        if (isChecking.get()) {
            errorLabel.setIcon(ERROR_ICON);
        } else {
            if (isSuccess.get()) {
                errorLabel.setIcon(SUCCESS_ICON);
            } else {
                errorLabel.setIcon(ERROR_ICON);
            }
        }
        errorLabel.setText(text);
    }
}
 

/**
 * Checks if the given child matches the filter.
 */
public boolean isInFilter(SettingsItem child, String filter) {
	if (!child.type.equals(Type.PARAMETER)) {
		return true;
	}
	filter = StringUtils.stripToNull(filter);
	if (filter == null) {
		return true;
	}
	String[] filterTokens = filter.split(" ");
	for (int i = 0; i < filterTokens.length; i++) {
		filterTokens[i] = filterTokens[i].toLowerCase(Locale.ENGLISH);
	}
	List<Supplier<String>> stringProviders = Arrays.asList(child::getKey, child::getTitle, child::getDescription);
	return stringProviders.stream().map(Supplier::get).filter(s -> s != null && !s.isEmpty())
			.map(s -> s.toLowerCase(Locale.ENGLISH)).anyMatch(s -> Arrays.stream(filterTokens).anyMatch(s::contains));
}
 

private boolean hasEnvironmentVariable(Document document, String name, String value) {
    final Elements elements = document.select(MessageFormat.format(".environments .name-value .name-value_pair label:contains({0})", name));
    if (elements.isEmpty()) {
        return false;
    }

    final String envValueSpanText = StringUtils.stripToNull(elements.get(0).parent().select("span").text());
    return StringUtils.equals(value, envValueSpanText);
}
 

/**
 * Get the suffix from a filename, will return "bar" for "foo.bar" and "gitignore" for ".gitignore".
 *
 * @param name the filename, not the path, to get the suffix from, must not be null or empty
 * @return the suffix of the file, can be empty if no suffix exists, never {@code null}. Always lower case.
 * @since 9.7
 */
public static String getSuffixFromFilename(String name) {
	if (StringUtils.stripToNull(name) == null) {
		throw new IllegalArgumentException("filename must not be null or empty!");
	}

	return FilenameUtils.getExtension(StringUtils.stripToNull(name)).toLowerCase(Locale.ENGLISH);
}
 

@Override
public void informParameterChanged(String key, String value) {
	if (WEB_SERVICE_TIMEOUT.equals(key)) {
		if (value != null) {
			TIMEOUT_URL_CONNECTION = Integer.parseInt(value);
		}
	} else if (RapidMiner.RAPIDMINER_DEFAULT_USER_AGENT.equals(key)) {
		userAgent = StringUtils.stripToNull(value);
	}
}
 

/**
 * Set the context key which is used to determine which encryption key is used.
 * <p>
 * Optional, will use the local default context if not specified.
 * </p>
 *
 * @param context the context, must only contain alphanumeric characters plus either whitespaces, {@code _}, {@code
 *                -}, or {@code %}. If {@code null}, will return a special encryption provider which does NOT
 *                encrypt at all!
 * @return this builder
 */
public EncryptionProviderBuilder withContext(String context) {
	if (context != null) {
		if (StringUtils.stripToNull(context) == null) {
			throw new IllegalArgumentException("context must not be empty!");
		}
		if (EncryptionProviderRegistry.INVALID_CONTEXT_PATTERN.matcher(context).find()) {
			throw new IllegalArgumentException("context must only contain alphanumeric characters plus whitespaces, '_', '%', or '-'!, but was " + context);
		}
	}

	this.context = context;
	return this;
}
 

private static String computeBasePath() {
    String configuredDir = StringUtils.stripToNull(System.getenv("BASHSUPPORT_TESTDATA"));
    if (configuredDir != null) {
        File dir = new File(configuredDir);
        if (dir.isDirectory() && dir.exists()) {
            return dir.getAbsolutePath();
        }
    }

    //try to find out from the current classloader
    URL url = BashTestUtils.class.getClassLoader().getResource("log4j.xml");
    if (url != null) {
        try {
            File basePath = new File(url.toURI());
            while (basePath.exists() && !new File(basePath, "testData").isDirectory()) {
                basePath = basePath.getParentFile();
            }

            //we need to cut the out dir and the other resource paths
            //File basePath = resourceFile.getParentFile().getParentFile().getParentFile().getParentFile();
            if (basePath.isDirectory()) {
                return new File(basePath, "testData").getAbsolutePath();
            }
        } catch (Exception e) {
            //ignore, use fallback below
        }
    } else {
        throw new IllegalStateException("Could not find log4jx.ml");
    }

    return null;
}
 

/**
 * Clones a String array but stripping all entries and omitting any that are
 * null or empty after stripping.
 * 
 * @param arr The starting array; this will not be modified.
 * @return A new array no longer than the one given, but which may be empty.
 */
@Restricted(NoExternalUse.class)
@Nonnull
public static String[] filterStringArray(@Nullable String[] arr) {
    final ArrayList<String> strings = new ArrayList<>();
    if (arr != null) {
        for (String s : arr) {
            s = StringUtils.stripToNull(s);
            if (s != null) {
                strings.add(s);
            }
        }
    }
    return strings.toArray(new String[strings.size()]);
}
 

/**
 * @deprecated See: {@link #parseDescriptor(Map, Map, String)}
 * @param launch_info Variable is mutated by this method.
 * @param postProp Variable is mutated by this method.
 * @param descriptor
 * @return
 */
public static boolean parseDescriptor(Properties launch_info,
        Properties postProp, String descriptor) {
    // this is an ugly copy/paste of the non-@deprecated method
    // could not convert data types as they variables get mutated (ugh)
    Map<String, Object> tm = null;
    try {
        tm = XMLMap.getFullMap(descriptor.trim());
    } catch (Exception e) {
        M_log.warning("BasicLTIUtil exception parsing BasicLTI descriptor: "
                + e.getMessage());
        return false;
    }
    if (tm == null) {
        M_log.warning("Unable to parse XML in parseDescriptor");
        return false;
    }

    String launch_url = StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/launch_url"));
    String secure_launch_url = StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/secure_launch_url"));
    if (launch_url == null && secure_launch_url == null) {
        return false;
    }

    setProperty(launch_info, "launch_url", launch_url);
    setProperty(launch_info, "secure_launch_url", secure_launch_url);

    // Extensions for hand-authored placements - The export process should scrub these
    setProperty(launch_info, "key", StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/x-secure/launch_key")));
    setProperty(launch_info, "secret", StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/x-secure/launch_secret")));

    List<Map<String, Object>> theList = XMLMap.getList(tm, "/basic_lti_link/custom/parameter");
    for (Map<String, Object> setting : theList) {
        dPrint("Setting=" + setting);
        String key = XMLMap.getString(setting, "/!key"); // Get the key attribute
        String value = XMLMap.getString(setting, "/"); // Get the value
        if (key == null || value == null) {
            continue;
        }
        key = "custom_" + mapKeyName(key);
        dPrint("key=" + key + " val=" + value);
        postProp.setProperty(key, value);
    }
    return true;
}
 

/**
 *
 * @param launch_info Variable is mutated by this method.
 * @param postProp Variable is mutated by this method.
 * @param descriptor
 * @return
 */
public static boolean parseDescriptor(Map<String, String> launch_info,
        Map<String, String> postProp, String descriptor) {
    Map<String, Object> tm = null;
    try {
        tm = XMLMap.getFullMap(descriptor.trim());
    } catch (Exception e) {
        M_log.warning("BasicLTIUtil exception parsing BasicLTI descriptor: "
                + e.getMessage());
        return false;
    }
    if (tm == null) {
        M_log.warning("Unable to parse XML in parseDescriptor");
        return false;
    }

    String launch_url = StringUtils.stripToNull(XMLMap.getString(tm,
            "/basic_lti_link/launch_url"));
    String secure_launch_url = StringUtils.stripToNull(XMLMap.getString(tm,
            "/basic_lti_link/secure_launch_url"));
    if (launch_url == null && secure_launch_url == null) {
        return false;
    }

    setProperty(launch_info, "launch_url", launch_url);
    setProperty(launch_info, "secure_launch_url", secure_launch_url);

    // Extensions for hand-authored placements - The export process should scrub
    // these
    setProperty(launch_info, "key", StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/x-secure/launch_key")));
    setProperty(launch_info, "secret", StringUtils.stripToNull(XMLMap.getString(tm, "/basic_lti_link/x-secure/launch_secret")));

    List<Map<String, Object>> theList = XMLMap.getList(tm, "/basic_lti_link/custom/parameter");
    for (Map<String, Object> setting : theList) {
        dPrint("Setting=" + setting);
        String key = XMLMap.getString(setting, "/!key"); // Get the key attribute
        String value = XMLMap.getString(setting, "/"); // Get the value
        if (key == null || value == null) {
            continue;
        }
        key = "custom_" + mapKeyName(key);
        dPrint("key=" + key + " val=" + value);
        postProp.put(key, value);
    }
    return true;
}
 

/** Sets the value of this parameter. Can be either {@code null} or empty. */
@Override
public void setValue(String value) {
	this.value = StringUtils.stripToNull(value);
}